1 | /* |
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2 | * ---------------------------------------------------------------------- |
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3 | * RpUnits.cc |
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4 | * |
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5 | * Data Members and member functions for the RpUnits class |
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6 | * |
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7 | * ====================================================================== |
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8 | * AUTHOR: Derrick Kearney, Purdue University |
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9 | * Copyright (c) 2004-2005 Purdue Research Foundation |
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10 | * |
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11 | * See the file "license.terms" for information on usage and |
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12 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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13 | * ====================================================================== |
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14 | */ |
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15 | |
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16 | #include "RpUnits.h" |
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17 | |
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18 | // dict pointer |
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19 | RpDict<std::string,RpUnits*>* RpUnits::dict = new RpDict<std::string,RpUnits*>(); |
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20 | |
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21 | // install predefined units |
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22 | static RpUnitsPreset loader; |
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23 | |
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24 | /**********************************************************************/ |
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25 | // METHOD: define() |
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26 | /// Define a unit type to be stored as a Rappture Unit. |
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27 | /** |
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28 | */ |
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29 | |
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30 | RpUnits * |
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31 | RpUnits::define( const std::string units, |
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32 | const RpUnits* basis, |
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33 | const std::string type ) { |
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34 | |
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35 | RpUnits* newRpUnit = NULL; |
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36 | |
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37 | std::string searchStr = units; |
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38 | std::string sendStr = ""; |
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39 | int len = searchStr.length(); |
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40 | int idx = len-1; |
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41 | double exponent = 1; |
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42 | |
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43 | if (units.empty()) { |
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44 | // raise error, user sent null units! |
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45 | return NULL; |
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46 | } |
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47 | |
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48 | // check to see if the user is trying to trick me! |
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49 | if ( (basis) && (units == basis->getUnits()) ) { |
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50 | // dont trick me! |
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51 | return NULL; |
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52 | } |
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53 | |
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54 | // check to see if the said unit can already be found in the dictionary |
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55 | if (RpUnits::find(units)) { |
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56 | return NULL; |
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57 | } |
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58 | |
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59 | //default exponent |
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60 | exponent = 1; |
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61 | |
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62 | // check to see if there is an exponent at the end |
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63 | // of the search string |
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64 | idx = RpUnits::grabExponent(searchStr, &exponent); |
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65 | searchStr.erase(idx); |
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66 | |
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67 | // move idx pointer back to where last character was found |
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68 | idx--; |
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69 | |
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70 | if ( searchStr[0] == '/') { |
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71 | // need to negate all of the previous exponents |
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72 | exponent = -1*exponent; |
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73 | sendStr = searchStr.c_str()+1; |
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74 | } |
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75 | else { |
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76 | // sendStr = searchStr.substr(idx+1,); |
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77 | // we have a unit string to parse |
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78 | sendStr = searchStr; |
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79 | } |
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80 | |
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81 | newRpUnit = new RpUnits(sendStr, exponent, basis, type); |
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82 | if (newRpUnit) { |
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83 | insert(newRpUnit->getUnitsName(),newRpUnit); |
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84 | } |
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85 | |
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86 | // return a copy of the new object to user |
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87 | return newRpUnit; |
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88 | } |
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89 | |
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90 | /**********************************************************************/ |
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91 | // METHOD: grabExponent() |
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92 | /// Return exponent from a units string containing a unit name and exponent |
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93 | /** |
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94 | */ |
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95 | |
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96 | int |
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97 | RpUnits::grabExponent(const std::string& inStr, double* exp) { |
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98 | |
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99 | int len = inStr.length(); |
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100 | int idx = len - 1; |
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101 | |
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102 | *exp = 1; |
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103 | |
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104 | while (isdigit(inStr[idx])) { |
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105 | idx--; |
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106 | } |
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107 | |
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108 | if ( (inStr[idx] == '+') || (inStr[idx] == '-') ) { |
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109 | idx--; |
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110 | } |
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111 | |
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112 | idx++; |
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113 | |
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114 | if (idx != len) { |
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115 | // process the exponent. |
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116 | *exp = strtod(inStr.c_str()+idx,NULL); |
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117 | } |
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118 | |
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119 | return idx; |
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120 | } |
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121 | |
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122 | /**********************************************************************/ |
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123 | // METHOD: grabUnitString() |
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124 | /// Return units name from a units string containing a unit name and exponent |
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125 | /** |
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126 | */ |
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127 | |
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128 | int |
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129 | RpUnits::grabUnitString ( const std::string& inStr ) { |
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130 | |
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131 | int idx = inStr.length() - 1; |
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132 | |
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133 | while ((idx >= 0) && isalpha(inStr[idx])) { |
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134 | idx--; |
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135 | } |
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136 | |
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137 | // move the index forward one position to |
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138 | // represent the start of the unit string |
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139 | idx++; |
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140 | |
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141 | return idx; |
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142 | } |
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143 | |
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144 | /**********************************************************************/ |
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145 | // METHOD: grabUnits() |
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146 | /// Search for the provided units exponent pair in the dictionary. |
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147 | /** |
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148 | */ |
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149 | |
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150 | const RpUnits* |
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151 | RpUnits::grabUnits ( std::string inStr, int* offset) { |
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152 | |
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153 | const RpUnits* unit = NULL; |
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154 | int len = inStr.length(); |
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155 | |
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156 | while ( ! inStr.empty() ) { |
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157 | unit = RpUnits::find(inStr); |
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158 | if (unit) { |
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159 | *offset = len - inStr.length(); |
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160 | break; |
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161 | } |
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162 | inStr.erase(0,1); |
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163 | } |
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164 | |
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165 | return unit; |
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166 | } |
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167 | |
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168 | |
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169 | /**********************************************************************/ |
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170 | // METHOD: getType() |
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171 | /// Return the type of an RpUnits object. |
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172 | /** |
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173 | */ |
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174 | std::string |
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175 | RpUnits::getType() const { |
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176 | return this->type; |
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177 | } |
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178 | |
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179 | /**********************************************************************/ |
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180 | // METHOD: getCompatible() |
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181 | /// Return a list of units compatible with this RpUnits object. |
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182 | /** |
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183 | */ |
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184 | std::list<std::string> |
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185 | RpUnits::getCompatible(double expMultiplier) const { |
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186 | |
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187 | std::list<std::string> compatList; |
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188 | std::list<std::string> basisCompatList; |
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189 | std::string myName = getUnitsName(); |
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190 | // std::stringstream otherName; |
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191 | std::string otherName = ""; |
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192 | std::string otherBasisName = ""; |
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193 | std::string blank = ""; |
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194 | // double otherExp = 1.0; |
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195 | convEntry* myConversions = this->convList; |
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196 | const RpUnits * basis = NULL; |
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197 | |
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198 | if (this->basis) { |
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199 | basisCompatList = this->basis->getCompatible(); |
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200 | compatList.merge(basisCompatList); |
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201 | } |
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202 | else { |
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203 | // only basis units should be in here |
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204 | // |
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205 | // run through the conversion list |
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206 | // for each entry, look at the name |
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207 | // if the name is not equal to the name of this RpUnits object, |
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208 | // store the fromPtr->getUnitsName() into compatList |
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209 | // else store the toPtr->getUnitsName() into compatList |
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210 | // |
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211 | while (myConversions != NULL) { |
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212 | |
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213 | otherName = myConversions->conv->toPtr->getUnitsName(); |
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214 | /* |
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215 | otherName.str(""); |
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216 | otherName << myConversions->conv->toPtr->getUnitsName(); |
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217 | otherExp = myConversions->conv->fromPtr->getExponent(); |
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218 | if ( (otherExp != 1) && (expMultiplier != 1) ) { |
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219 | otherName << otherExp * expMultiplier; |
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220 | } |
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221 | */ |
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222 | basis = myConversions->conv->toPtr->basis; |
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223 | |
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224 | // if (myName == otherName.str()) { |
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225 | if (myName == otherName) { |
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226 | otherName = myConversions->conv->fromPtr->getUnitsName(); |
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227 | /* |
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228 | otherName.str(""); |
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229 | otherName << myConversions->conv->fromPtr->getUnitsName(); |
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230 | if ( (otherExp != 1) && (expMultiplier != 1) ) { |
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231 | otherExp = myConversions->conv->fromPtr->getExponent(); |
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232 | otherName << otherExp * expMultiplier; |
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233 | } |
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234 | */ |
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235 | basis = myConversions->conv->fromPtr->basis; |
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236 | } |
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237 | |
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238 | // check to see if they are the same basis, |
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239 | // no need to list all of the metric conversions. |
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240 | if (basis) { |
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241 | if (basis->getUnitsName() == myName) { |
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242 | // do not add this unit to the conversion |
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243 | // because its a derived unit. |
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244 | myConversions = myConversions->next; |
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245 | continue; |
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246 | } |
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247 | } |
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248 | |
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249 | // add the other unit's name to the list of compatible units |
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250 | // compatList.push_back(otherName.str()); |
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251 | compatList.push_back(otherName); |
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252 | |
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253 | // advance to the next conversion |
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254 | myConversions = myConversions->next; |
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255 | } |
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256 | } |
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257 | |
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258 | compatList.push_back(myName); |
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259 | compatList.sort(); |
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260 | compatList.unique(); |
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261 | return compatList; |
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262 | |
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263 | } |
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264 | |
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265 | /**********************************************************************/ |
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266 | // METHOD: define() |
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267 | /// Define a unit conversion with one arg double function pointers. |
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268 | /** |
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269 | */ |
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270 | |
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271 | RpUnits * |
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272 | RpUnits::define( const RpUnits* from, |
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273 | const RpUnits* to, |
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274 | double (*convForwFxnPtr)(double), |
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275 | double (*convBackFxnPtr)(double) ) { |
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276 | |
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277 | // this is kinda the wrong way to get the job done... |
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278 | // how do we only create 1 conversion object and share it between atleast two RpUnits |
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279 | // objs so that when the RpUnits objs are deleted, we are not trying to delete already |
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280 | // deleted memory. |
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281 | // so for the sake of safety we get the following few lines of code. |
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282 | |
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283 | conversion* conv1 = NULL; |
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284 | conversion* conv2 = NULL; |
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285 | |
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286 | if (from && to) { |
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287 | |
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288 | conv1 = new conversion (from,to,convForwFxnPtr,convBackFxnPtr); |
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289 | conv2 = new conversion (from,to,convForwFxnPtr,convBackFxnPtr); |
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290 | |
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291 | from->connectConversion(conv1); |
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292 | to->connectConversion(conv2); |
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293 | } |
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294 | |
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295 | return NULL; |
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296 | } |
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297 | |
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298 | /**********************************************************************/ |
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299 | // METHOD: define() |
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300 | /// Define a unit conversion with two arg double function pointers. |
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301 | /** |
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302 | */ |
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303 | |
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304 | RpUnits * |
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305 | RpUnits::define( const RpUnits* from, |
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306 | const RpUnits* to, |
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307 | double (*convForwFxnPtr)(double,double), |
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308 | double (*convBackFxnPtr)(double,double)) { |
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309 | |
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310 | // this is kinda the wrong way to get the job done... |
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311 | // how do we only create 1 conversion object and share it between |
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312 | // atleast two RpUnits objs so that when the RpUnits objs are |
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313 | // deleted, we are not trying to delete already deleted memory. |
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314 | // so for the sake of safety we get the following few lines of code. |
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315 | |
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316 | conversion* conv1 = NULL; |
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317 | conversion* conv2 = NULL; |
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318 | |
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319 | if (from && to) { |
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320 | conv1 = new conversion (from,to,convForwFxnPtr,convBackFxnPtr); |
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321 | conv2 = new conversion (from,to,convForwFxnPtr,convBackFxnPtr); |
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322 | |
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323 | from->connectConversion(conv1); |
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324 | to->connectConversion(conv2); |
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325 | } |
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326 | |
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327 | return NULL; |
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328 | } |
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329 | |
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330 | /**********************************************************************/ |
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331 | // METHOD: define() |
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332 | /// Define a unit conversion with two arg void* function pointers. |
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333 | /** |
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334 | */ |
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335 | |
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336 | RpUnits * |
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337 | RpUnits::define( const RpUnits* from, |
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338 | const RpUnits* to, |
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339 | void* (*convForwFxnPtr)(void*, void*), |
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340 | void* convForwData, |
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341 | void* (*convBackFxnPtr)(void*, void*), |
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342 | void* convBackData) { |
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343 | |
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344 | // this is kinda the wrong way to get the job done... |
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345 | // how do we only create 1 conversion object and share it between at |
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346 | // least two RpUnits objs so that when the RpUnits objs are deleted, |
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347 | // we are not trying to delete already deleted memory. |
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348 | // so for the sake of safety we get the following few lines of code. |
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349 | |
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350 | conversion* conv1 = NULL; |
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351 | conversion* conv2 = NULL; |
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352 | |
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353 | if (from && to) { |
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354 | conv1 = new conversion ( from, to, convForwFxnPtr,convForwData, |
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355 | convBackFxnPtr,convBackData); |
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356 | conv2 = new conversion ( from,to,convForwFxnPtr,convForwData, |
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357 | convBackFxnPtr,convBackData); |
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358 | |
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359 | from->connectConversion(conv1); |
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360 | to->connectConversion(conv2); |
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361 | } |
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362 | |
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363 | return NULL; |
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364 | } |
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365 | |
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366 | |
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367 | /**********************************************************************/ |
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368 | // METHOD: getUnits() |
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369 | /// Report the text portion of the units of this object back to caller. |
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370 | /** |
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371 | * \sa {getUnitsName} |
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372 | */ |
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373 | |
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374 | std::string |
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375 | RpUnits::getUnits() const { |
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376 | |
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377 | return units; |
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378 | } |
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379 | |
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380 | /**********************************************************************/ |
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381 | // METHOD: getUnitsName() |
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382 | /// Report the full name of the units of this object back to caller. |
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383 | /** |
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384 | * Reports the full text and exponent of the units represented by this |
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385 | * object, back to the caller. Note that if the exponent == 1, no |
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386 | * exponent will be printed. |
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387 | */ |
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388 | |
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389 | std::string |
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390 | RpUnits::getUnitsName() const { |
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391 | |
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392 | std::stringstream unitText; |
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393 | double exponent; |
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394 | |
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395 | exponent = getExponent(); |
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396 | |
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397 | if (exponent == 1) { |
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398 | unitText << units; |
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399 | } |
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400 | else { |
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401 | unitText << units << exponent; |
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402 | } |
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403 | |
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404 | return (std::string(unitText.str())); |
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405 | } |
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406 | |
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407 | /**********************************************************************/ |
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408 | // METHOD: getExponent() |
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409 | /// Report the exponent of the units of this object back to caller. |
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410 | /** |
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411 | * Reports the exponent of the units represented by this |
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412 | * object, back to the caller. Note that if the exponent == 1, no |
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413 | * exponent will be printed. |
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414 | */ |
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415 | |
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416 | double |
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417 | RpUnits::getExponent() const { |
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418 | |
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419 | return exponent; |
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420 | } |
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421 | |
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422 | /**********************************************************************/ |
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423 | // METHOD: getBasis() |
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424 | /// Retrieve the RpUnits object representing the basis of this object. |
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425 | /** |
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426 | * Returns a pointer to a RpUnits object which, on success, points to the |
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427 | * RpUnits object that is the basis of the calling object. |
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428 | */ |
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429 | |
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430 | const RpUnits * |
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431 | RpUnits::getBasis() const { |
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432 | |
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433 | return basis; |
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434 | } |
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435 | |
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436 | /**********************************************************************/ |
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437 | // METHOD: makeBasis() |
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438 | /// Convert a value into its RpUnits's basis. |
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439 | /** |
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440 | * convert the current unit to its basis units |
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441 | * |
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442 | * Return Codes |
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443 | * 0) no error (could also mean or no prefix was found) |
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444 | * in some cases, this means the value is in its basis format |
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445 | * 1) the prefix found does not have a built in factor associated. |
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446 | * |
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447 | */ |
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448 | |
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449 | double |
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450 | RpUnits::makeBasis(double value, int* result) const { |
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451 | |
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452 | double retVal = value; |
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453 | |
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454 | if (result) { |
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455 | *result = 0; |
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456 | } |
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457 | |
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458 | if (basis == NULL) { |
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459 | // this unit is a basis |
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460 | // do nothing |
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461 | } |
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462 | else { |
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463 | retVal = convert(basis,value,result); |
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464 | } |
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465 | |
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466 | return retVal; |
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467 | } |
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468 | |
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469 | /**********************************************************************/ |
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470 | // METHOD: makeBasis() |
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471 | /// Convert a value into its RpUnits's basis. |
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472 | /** |
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473 | * |
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474 | */ |
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475 | |
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476 | const RpUnits& |
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477 | RpUnits::makeBasis(double* value, int* result) const { |
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478 | double retVal = *value; |
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479 | int convResult = 1; |
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480 | |
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481 | if (basis == NULL) { |
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482 | // this unit is a basis |
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483 | // do nothing |
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484 | } |
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485 | else { |
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486 | retVal = convert(basis,retVal,&convResult); |
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487 | } |
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488 | |
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489 | if ( (convResult == 0) ) { |
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490 | *value = retVal; |
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491 | } |
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492 | |
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493 | if (result) { |
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494 | *result = convResult; |
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495 | } |
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496 | |
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497 | return *this; |
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498 | } |
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499 | |
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500 | /**********************************************************************/ |
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501 | // METHOD: makeMetric() |
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502 | /// Define a unit type to be stored as a Rappture Unit. |
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503 | /** |
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504 | * static int makeMetric(RpUnits * basis); |
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505 | * create the metric attachments for the given basis. |
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506 | * should only be used if this unit is of metric type |
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507 | */ |
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508 | |
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509 | int |
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510 | RpUnits::makeMetric(const RpUnits* basis) { |
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511 | |
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512 | if (!basis) { |
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513 | return 0; |
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514 | } |
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515 | |
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516 | std::string basisName = basis->getUnitsName(); |
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517 | std::string name; |
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518 | |
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519 | name = "c" + basisName; |
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520 | RpUnits * centi = RpUnits::define(name, basis, basis->type); |
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521 | RpUnits::define(centi, basis, centi2base, base2centi); |
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522 | |
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523 | name = "m" + basisName; |
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524 | RpUnits * milli = RpUnits::define(name, basis, basis->type); |
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525 | RpUnits::define(milli, basis, milli2base, base2milli); |
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526 | |
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527 | name = "u" + basisName; |
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528 | RpUnits * micro = RpUnits::define(name, basis, basis->type); |
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529 | RpUnits::define(micro, basis, micro2base, base2micro); |
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530 | |
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531 | name = "n" + basisName; |
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532 | RpUnits * nano = RpUnits::define(name, basis, basis->type); |
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533 | RpUnits::define(nano, basis, nano2base, base2nano); |
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534 | |
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535 | name = "p" + basisName; |
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536 | RpUnits * pico = RpUnits::define(name, basis, basis->type); |
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537 | RpUnits::define(pico, basis, pico2base, base2pico); |
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538 | |
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539 | name = "f" + basisName; |
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540 | RpUnits * femto = RpUnits::define(name, basis, basis->type); |
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541 | RpUnits::define(femto, basis, femto2base, base2femto); |
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542 | |
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543 | name = "a" + basisName; |
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544 | RpUnits * atto = RpUnits::define(name, basis, basis->type); |
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545 | RpUnits::define(atto, basis, atto2base, base2atto); |
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546 | |
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547 | name = "k" + basisName; |
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548 | RpUnits * kilo = RpUnits::define(name, basis, basis->type); |
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549 | RpUnits::define(kilo, basis, kilo2base, base2kilo); |
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550 | |
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551 | name = "M" + basisName; |
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552 | RpUnits * mega = RpUnits::define(name, basis, basis->type); |
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553 | RpUnits::define(mega, basis, mega2base, base2mega); |
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554 | |
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555 | name = "G" + basisName; |
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556 | RpUnits * giga = RpUnits::define(name, basis, basis->type); |
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557 | RpUnits::define(giga, basis, giga2base, base2giga); |
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558 | |
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559 | name = "T" + basisName; |
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560 | RpUnits * tera = RpUnits::define(name, basis, basis->type); |
---|
561 | RpUnits::define(tera, basis, tera2base, base2tera); |
---|
562 | |
---|
563 | name = "P" + basisName; |
---|
564 | RpUnits * peta = RpUnits::define(name, basis, basis->type); |
---|
565 | RpUnits::define(peta, basis, peta2base, base2peta); |
---|
566 | |
---|
567 | return (1); |
---|
568 | } |
---|
569 | |
---|
570 | |
---|
571 | /**********************************************************************/ |
---|
572 | // METHOD: find() |
---|
573 | /// Find an RpUnits Object from the provided string. |
---|
574 | /** |
---|
575 | */ |
---|
576 | |
---|
577 | const RpUnits* |
---|
578 | RpUnits::find(std::string key) { |
---|
579 | |
---|
580 | // dict pointer |
---|
581 | const RpUnits* unitEntry = NULL; |
---|
582 | double exponent = 1; |
---|
583 | int idx = 0; |
---|
584 | std::stringstream tmpKey; |
---|
585 | |
---|
586 | if (key[0] == '/') { |
---|
587 | // check to see if there is an exponent at the end |
---|
588 | // of the search string |
---|
589 | idx = RpUnits::grabExponent(key, &exponent); |
---|
590 | tmpKey << key.substr(1,idx-1) << (-1*exponent); |
---|
591 | key = tmpKey.str(); |
---|
592 | } |
---|
593 | |
---|
594 | unitEntry = *(dict->find(key).getValue()); |
---|
595 | |
---|
596 | // dict pointer |
---|
597 | if (unitEntry == *(dict->getNullEntry().getValue()) ) { |
---|
598 | unitEntry = NULL; |
---|
599 | } |
---|
600 | |
---|
601 | return unitEntry; |
---|
602 | } |
---|
603 | |
---|
604 | /**********************************************************************/ |
---|
605 | // METHOD: validate() |
---|
606 | /// Split a string of units and check that each unit is available as an object |
---|
607 | /** |
---|
608 | * Splits a string of units like cm2/kVns into a list of units like |
---|
609 | * cm2, kV1, ns1 where an exponent is provided for each list entry. |
---|
610 | * It checks to see that each unit actually exists as a valid defined unit. |
---|
611 | * If the unit exists or can be interpreted, the function keeps parsing the |
---|
612 | * string until it reaches the end of the string. If the function comes |
---|
613 | * across a unit that is unrecognized or can not be interpreted, then it |
---|
614 | * returns error (a non-zero value). |
---|
615 | * |
---|
616 | * this code is very similar to units2list() |
---|
617 | * |
---|
618 | * if &compatList == NULL, no compatible list of units will be generated. |
---|
619 | * this function does not do a good job of placing the available units |
---|
620 | * back into the original formula. i still need to work on this. |
---|
621 | */ |
---|
622 | |
---|
623 | int |
---|
624 | RpUnits::validate ( const std::string& inUnits, |
---|
625 | std::string& type, |
---|
626 | std::list<std::string>* compatList ) { |
---|
627 | |
---|
628 | std::string myInUnits = inUnits; |
---|
629 | std::string sendUnitStr = ""; |
---|
630 | double exponent = 1; |
---|
631 | int offset = 0; |
---|
632 | int idx = 0; |
---|
633 | int last = 0; |
---|
634 | int err = 0; // did we come across an unrecognized unit |
---|
635 | const RpUnits* unit = NULL; |
---|
636 | std::list<std::string> basisCompatList; |
---|
637 | std::list<std::string>::iterator compatListIter; |
---|
638 | std::stringstream unitWExp; |
---|
639 | |
---|
640 | |
---|
641 | while ( !myInUnits.empty() ) { |
---|
642 | |
---|
643 | // check to see if we came across a '/' character |
---|
644 | last = myInUnits.length()-1; |
---|
645 | if (myInUnits[last] == '/') { |
---|
646 | type = myInUnits[last] + type; |
---|
647 | myInUnits.erase(last); |
---|
648 | continue; |
---|
649 | } |
---|
650 | |
---|
651 | // get the exponent |
---|
652 | offset = RpUnits::grabExponent(myInUnits,&exponent); |
---|
653 | myInUnits.erase(offset); |
---|
654 | idx = offset - 1; |
---|
655 | |
---|
656 | // grab the largest string we can find |
---|
657 | offset = RpUnits::grabUnitString(myInUnits); |
---|
658 | idx = offset; |
---|
659 | |
---|
660 | // figure out if we have some defined units in that string |
---|
661 | sendUnitStr = myInUnits.substr(offset,std::string::npos); |
---|
662 | if ((unit = grabUnits(sendUnitStr,&offset))) { |
---|
663 | // a unit was found |
---|
664 | // erase the found unit's name from our search string |
---|
665 | myInUnits.erase(idx+offset); |
---|
666 | |
---|
667 | // add the type to the type string |
---|
668 | type = unit->getType() + type; |
---|
669 | |
---|
670 | // merge the compatible units |
---|
671 | if (compatList) { |
---|
672 | basisCompatList = unit->getCompatible(exponent); |
---|
673 | |
---|
674 | // adjust exponents as necessary |
---|
675 | if ( (exponent != 0) && (exponent != 1) ) { |
---|
676 | compatListIter = compatList->begin(); |
---|
677 | while (compatListIter != compatList->end()) { |
---|
678 | unitWExp << *compatListIter << exponent; |
---|
679 | *compatListIter = unitWExp.str(); |
---|
680 | } |
---|
681 | } |
---|
682 | |
---|
683 | compatList->merge(basisCompatList); |
---|
684 | } |
---|
685 | } |
---|
686 | else { |
---|
687 | // we came across a unit we did not recognize |
---|
688 | // raise error and exit |
---|
689 | err++; |
---|
690 | break; |
---|
691 | } |
---|
692 | |
---|
693 | // reset our vars |
---|
694 | idx = 0; |
---|
695 | offset = 0; |
---|
696 | exponent = 1; |
---|
697 | } |
---|
698 | |
---|
699 | // clean out any duplicate entries. |
---|
700 | if (compatList) { |
---|
701 | compatList->unique(); |
---|
702 | } |
---|
703 | |
---|
704 | return err; |
---|
705 | } |
---|
706 | |
---|
707 | |
---|
708 | /**********************************************************************/ |
---|
709 | // METHOD: negateListExponents() |
---|
710 | /// Negate the exponents on every element in unitsList |
---|
711 | /** |
---|
712 | */ |
---|
713 | |
---|
714 | int |
---|
715 | RpUnits::negateListExponents(RpUnitsList& unitsList) { |
---|
716 | RpUnitsListIter iter = unitsList.begin(); |
---|
717 | int nodeCnt = unitsList.size(); |
---|
718 | |
---|
719 | if (nodeCnt > 0) { |
---|
720 | for (; iter != unitsList.end(); iter++) { |
---|
721 | iter->negateExponent(); |
---|
722 | nodeCnt--; |
---|
723 | } |
---|
724 | } |
---|
725 | |
---|
726 | return nodeCnt; |
---|
727 | } |
---|
728 | |
---|
729 | /**********************************************************************/ |
---|
730 | // METHOD: negateExponent() |
---|
731 | /// Negate the exponent on the current RpUnitsListEntry |
---|
732 | /** |
---|
733 | */ |
---|
734 | |
---|
735 | void |
---|
736 | RpUnitsListEntry::negateExponent() const { |
---|
737 | exponent = exponent * -1; |
---|
738 | return; |
---|
739 | } |
---|
740 | |
---|
741 | /**********************************************************************/ |
---|
742 | // METHOD: name() |
---|
743 | /// Provide the caller with the name of this object |
---|
744 | /** |
---|
745 | */ |
---|
746 | |
---|
747 | std::string |
---|
748 | RpUnitsListEntry::name() const { |
---|
749 | std::stringstream name; |
---|
750 | name << unit->getUnits() << exponent; |
---|
751 | return std::string(name.str()); |
---|
752 | } |
---|
753 | |
---|
754 | /**********************************************************************/ |
---|
755 | // METHOD: define() |
---|
756 | /// Provide the caller with the basis of the RpUnits object being stored |
---|
757 | /** |
---|
758 | */ |
---|
759 | |
---|
760 | const RpUnits* |
---|
761 | RpUnitsListEntry::getBasis() const { |
---|
762 | return unit->getBasis(); |
---|
763 | } |
---|
764 | |
---|
765 | /**********************************************************************/ |
---|
766 | // METHOD: getUnitsObj() |
---|
767 | /// Return the RpUnits Object from a RpUnitsListEntry. |
---|
768 | /** |
---|
769 | */ |
---|
770 | |
---|
771 | const RpUnits* |
---|
772 | RpUnitsListEntry::getUnitsObj() const { |
---|
773 | return unit; |
---|
774 | } |
---|
775 | |
---|
776 | /**********************************************************************/ |
---|
777 | // METHOD: getExponent() |
---|
778 | /// Return the exponent of an RpUnitsListEntry. |
---|
779 | /** |
---|
780 | */ |
---|
781 | |
---|
782 | double |
---|
783 | RpUnitsListEntry::getExponent() const { |
---|
784 | return exponent; |
---|
785 | } |
---|
786 | |
---|
787 | /**********************************************************************/ |
---|
788 | // METHOD: printList() |
---|
789 | /// Traverse a RpUnitsList and print out the name of each element. |
---|
790 | /** |
---|
791 | */ |
---|
792 | |
---|
793 | int |
---|
794 | RpUnits::printList(RpUnitsList& unitsList) { |
---|
795 | RpUnitsListIter iter = unitsList.begin(); |
---|
796 | int nodeCnt = unitsList.size(); |
---|
797 | |
---|
798 | if (nodeCnt > 0) { |
---|
799 | for (; iter != unitsList.end(); iter++) { |
---|
800 | std::cout << iter->name() << " "; |
---|
801 | nodeCnt--; |
---|
802 | } |
---|
803 | std::cout << std::endl; |
---|
804 | } |
---|
805 | |
---|
806 | return nodeCnt; |
---|
807 | } |
---|
808 | |
---|
809 | /**********************************************************************/ |
---|
810 | // METHOD: units2list() |
---|
811 | /// Split a string of units into a list of base units with exponents. |
---|
812 | /** |
---|
813 | * Splits a string of units like cm2/kVns into a list of units like |
---|
814 | * cm2, kV1, ns1 where an exponent is provided for each list entry. |
---|
815 | * List entries are found by comparing units strings to the names |
---|
816 | * in the dictionary. |
---|
817 | */ |
---|
818 | |
---|
819 | int |
---|
820 | RpUnits::units2list ( const std::string& inUnits, |
---|
821 | RpUnitsList& outList ) { |
---|
822 | |
---|
823 | std::string myInUnits = inUnits; |
---|
824 | std::string sendUnitStr = ""; |
---|
825 | double exponent = 1; |
---|
826 | int offset = 0; |
---|
827 | int idx = 0; |
---|
828 | int last = 0; |
---|
829 | const RpUnits* unit = NULL; |
---|
830 | |
---|
831 | |
---|
832 | while ( !myInUnits.empty() ) { |
---|
833 | |
---|
834 | // check to see if we came across a '/' character |
---|
835 | last = myInUnits.length()-1; |
---|
836 | if (myInUnits[last] == '/') { |
---|
837 | myInUnits.erase(last); |
---|
838 | // multiply previous exponents by -1 |
---|
839 | if ( ! outList.empty() ) { |
---|
840 | RpUnits::negateListExponents(outList); |
---|
841 | } |
---|
842 | continue; |
---|
843 | } |
---|
844 | |
---|
845 | // get the exponent |
---|
846 | offset = RpUnits::grabExponent(myInUnits,&exponent); |
---|
847 | myInUnits.erase(offset); |
---|
848 | idx = offset - 1; |
---|
849 | |
---|
850 | // grab the largest string we can find |
---|
851 | offset = RpUnits::grabUnitString(myInUnits); |
---|
852 | idx = offset; |
---|
853 | |
---|
854 | // figure out if we have some defined units in that string |
---|
855 | sendUnitStr = myInUnits.substr(offset,std::string::npos); |
---|
856 | unit = grabUnits(sendUnitStr,&offset); |
---|
857 | if (unit) { |
---|
858 | // a unit was found |
---|
859 | // add this unit to the list |
---|
860 | // erase the found unit's name from our search string |
---|
861 | outList.push_front(RpUnitsListEntry(unit,exponent)); |
---|
862 | myInUnits.erase(idx+offset); |
---|
863 | } |
---|
864 | else { |
---|
865 | // we came across a unit we did not recognize |
---|
866 | // raise error and delete character for now |
---|
867 | myInUnits.erase(last); |
---|
868 | } |
---|
869 | |
---|
870 | // reset our vars |
---|
871 | idx = 0; |
---|
872 | offset = 0; |
---|
873 | exponent = 1; |
---|
874 | } |
---|
875 | |
---|
876 | return 0; |
---|
877 | } |
---|
878 | |
---|
879 | /**********************************************************************/ |
---|
880 | // METHOD: compareListEntryBasis() |
---|
881 | /// Compare two RpUnits objects to see if they are related by a basis |
---|
882 | /** |
---|
883 | * One step in converting between Rappture Units Objects is to check |
---|
884 | * to see if the conversion is an intra-basis conversion. Intra-basis |
---|
885 | * conversions include those where all conversions are done within |
---|
886 | * the same basis. |
---|
887 | * |
---|
888 | * Examples of intra-basis conversions include: |
---|
889 | * m -> cm ( meters to centimeters ) |
---|
890 | * cm -> m ( centimeters to meters ) |
---|
891 | * cm -> nm ( centimenters to nanometers ) |
---|
892 | */ |
---|
893 | |
---|
894 | int RpUnits::compareListEntryBasis ( RpUnitsList& fromList, |
---|
895 | RpUnitsListIter& fromIter, |
---|
896 | RpUnitsListIter& toIter ) { |
---|
897 | |
---|
898 | const RpUnits* toBasis = NULL; |
---|
899 | const RpUnits* fromBasis = NULL; |
---|
900 | int retVal = 1; |
---|
901 | double fromExp = 0; |
---|
902 | double toExp = 0; |
---|
903 | |
---|
904 | fromIter = fromList.begin(); |
---|
905 | |
---|
906 | // get the basis of the object being stored |
---|
907 | // if the basis is NULL, then we'll compare the object |
---|
908 | // itself because the object is the basis. |
---|
909 | toBasis = toIter->getBasis(); |
---|
910 | if (toBasis == NULL) { |
---|
911 | toBasis = toIter->getUnitsObj(); |
---|
912 | } |
---|
913 | |
---|
914 | toExp = toIter->getExponent(); |
---|
915 | |
---|
916 | while ( fromIter != fromList.end() ) { |
---|
917 | |
---|
918 | fromExp = fromIter->getExponent(); |
---|
919 | |
---|
920 | // in order to convert, exponents must be equal. |
---|
921 | if (fromExp == toExp) { |
---|
922 | |
---|
923 | // get the basis of the object being stored |
---|
924 | // if the basis is NULL, then we'll compare the object |
---|
925 | // itself because the object is the basis. |
---|
926 | fromBasis = fromIter->getBasis(); |
---|
927 | if (fromBasis == NULL) { |
---|
928 | fromBasis = fromIter->getUnitsObj(); |
---|
929 | } |
---|
930 | |
---|
931 | if (toBasis == fromBasis) { |
---|
932 | // conversion needed between 2 units of the same basis. |
---|
933 | // these two units could actually be the same unit (m->m) |
---|
934 | retVal = 0; |
---|
935 | break; |
---|
936 | } |
---|
937 | } |
---|
938 | |
---|
939 | fromIter++; |
---|
940 | } |
---|
941 | |
---|
942 | return retVal; |
---|
943 | } |
---|
944 | |
---|
945 | /**********************************************************************/ |
---|
946 | // METHOD: compareListEntrySearch() |
---|
947 | /// this function will soon be removed. |
---|
948 | /** |
---|
949 | */ |
---|
950 | |
---|
951 | int RpUnits::compareListEntrySearch ( RpUnitsList& fromList, |
---|
952 | RpUnitsListIter& fromIter, |
---|
953 | RpUnitsListIter& toIter ) { |
---|
954 | |
---|
955 | const RpUnits* toBasis = NULL; |
---|
956 | const RpUnits* fromBasis = NULL; |
---|
957 | int retVal = 1; |
---|
958 | |
---|
959 | fromIter = fromList.begin(); |
---|
960 | |
---|
961 | // get the basis of the object being stored |
---|
962 | // if the basis is NULL, then we'll compare the object |
---|
963 | // itself because the object is the basis. |
---|
964 | toBasis = toIter->getBasis(); |
---|
965 | if (toBasis == NULL) { |
---|
966 | toBasis = toIter->getUnitsObj(); |
---|
967 | } |
---|
968 | |
---|
969 | while ( fromIter != fromList.end() ) { |
---|
970 | |
---|
971 | // get the basis of the object being stored |
---|
972 | // if the basis is NULL, then we'll compare the object |
---|
973 | // itself because the object is the basis. |
---|
974 | fromBasis = fromIter->getBasis(); |
---|
975 | if (fromBasis == NULL) { |
---|
976 | fromBasis = fromIter->getUnitsObj(); |
---|
977 | } |
---|
978 | |
---|
979 | if (toBasis == fromBasis) { |
---|
980 | // conversion needed between 2 units of the same basis. |
---|
981 | // these two units could actually be the same unit (m->m) |
---|
982 | retVal = 0; |
---|
983 | break; |
---|
984 | } |
---|
985 | |
---|
986 | fromIter++; |
---|
987 | } |
---|
988 | |
---|
989 | return retVal; |
---|
990 | } |
---|
991 | |
---|
992 | /**********************************************************************/ |
---|
993 | // METHOD: convert() |
---|
994 | /// Convert between RpUnits return a string value with or without units |
---|
995 | /** |
---|
996 | * Convert function so people can just send in two strings and |
---|
997 | * we'll see if the units exists and do a conversion |
---|
998 | * Example: |
---|
999 | * strVal = RpUnits::convert("300K","C",1); |
---|
1000 | * |
---|
1001 | * Returns a string with or without units. |
---|
1002 | */ |
---|
1003 | |
---|
1004 | std::string |
---|
1005 | RpUnits::convert ( std::string val, |
---|
1006 | std::string toUnitsName, |
---|
1007 | int showUnits, |
---|
1008 | int* result ) { |
---|
1009 | |
---|
1010 | RpUnitsList toUnitsList; |
---|
1011 | RpUnitsList fromUnitsList; |
---|
1012 | |
---|
1013 | RpUnitsListIter toIter; |
---|
1014 | RpUnitsListIter fromIter; |
---|
1015 | RpUnitsListIter tempIter; |
---|
1016 | |
---|
1017 | const RpUnits* toUnits = NULL; |
---|
1018 | const RpUnits* fromUnits = NULL; |
---|
1019 | |
---|
1020 | std::string tmpNumVal = ""; |
---|
1021 | std::string fromUnitsName = ""; |
---|
1022 | std::string convVal = ""; |
---|
1023 | double origNumVal = 0; |
---|
1024 | double numVal = 0; |
---|
1025 | double toExp = 0; |
---|
1026 | double fromExp = 0; |
---|
1027 | int convResult = 0; |
---|
1028 | char* endptr = NULL; |
---|
1029 | std::stringstream outVal; |
---|
1030 | |
---|
1031 | int rv = 0; |
---|
1032 | double factor = 1; |
---|
1033 | |
---|
1034 | |
---|
1035 | // set default result flag/error code |
---|
1036 | if (result) { |
---|
1037 | *result = 0; |
---|
1038 | } |
---|
1039 | |
---|
1040 | // search our string to see where the numeric part stops |
---|
1041 | // and the units part starts |
---|
1042 | // |
---|
1043 | // convert("5J", "neV") => 3.12075e+28neV |
---|
1044 | // convert("3.12075e+28neV", "J") => 4.99999J |
---|
1045 | // now we can actually get the scientific notation portion of the string. |
---|
1046 | // |
---|
1047 | |
---|
1048 | numVal = strtod(val.c_str(),&endptr); |
---|
1049 | origNumVal = numVal; |
---|
1050 | |
---|
1051 | if ( (numVal == 0) && (endptr == val.c_str()) ) { |
---|
1052 | // no conversion was done. |
---|
1053 | // number in incorrect format probably. |
---|
1054 | if (result) { |
---|
1055 | *result = 1; |
---|
1056 | } |
---|
1057 | return val; |
---|
1058 | } |
---|
1059 | |
---|
1060 | fromUnitsName = std::string(endptr); |
---|
1061 | |
---|
1062 | if (toUnitsName.empty()) { |
---|
1063 | // there were no units in the input |
---|
1064 | // string or no conversion needed |
---|
1065 | // assume fromUnitsName = toUnitsName |
---|
1066 | // return the correct value |
---|
1067 | if (result) { |
---|
1068 | *result = 0; |
---|
1069 | } |
---|
1070 | |
---|
1071 | if (showUnits) { |
---|
1072 | outVal << numVal << fromUnitsName; |
---|
1073 | } |
---|
1074 | else { |
---|
1075 | outVal << numVal; |
---|
1076 | } |
---|
1077 | |
---|
1078 | return std::string(outVal.str()); |
---|
1079 | } |
---|
1080 | |
---|
1081 | // check if the fromUnitsName is empty or |
---|
1082 | // if the fromUnitsName == toUnitsName |
---|
1083 | // these are conditions where no conversion is needed |
---|
1084 | if ( (fromUnitsName.empty()) || (toUnitsName == fromUnitsName) ) { |
---|
1085 | // there were no units in the input |
---|
1086 | // string or no conversion needed |
---|
1087 | // assume fromUnitsName = toUnitsName |
---|
1088 | // return the correct value |
---|
1089 | if (result) { |
---|
1090 | *result = 0; |
---|
1091 | } |
---|
1092 | |
---|
1093 | if (showUnits) { |
---|
1094 | outVal << numVal << toUnitsName; |
---|
1095 | } |
---|
1096 | else { |
---|
1097 | outVal << numVal; |
---|
1098 | } |
---|
1099 | |
---|
1100 | return std::string(outVal.str()); |
---|
1101 | } |
---|
1102 | |
---|
1103 | RpUnits::units2list(toUnitsName,toUnitsList); |
---|
1104 | RpUnits::units2list(fromUnitsName,fromUnitsList); |
---|
1105 | |
---|
1106 | toIter = toUnitsList.begin(); |
---|
1107 | |
---|
1108 | // pass 1: compare basis' of objects to find intra-basis conversions |
---|
1109 | while ( toIter != toUnitsList.end() ) { |
---|
1110 | rv = RpUnits::compareListEntryBasis(fromUnitsList, fromIter, toIter); |
---|
1111 | if (rv == 0) { |
---|
1112 | |
---|
1113 | // check the names of the units provided by the user |
---|
1114 | // if the names are the same, no need to do a conversion |
---|
1115 | if (fromIter->name() != toIter->name()) { |
---|
1116 | |
---|
1117 | // do an intra-basis conversion |
---|
1118 | toUnits = toIter->getUnitsObj(); |
---|
1119 | fromUnits = fromIter->getUnitsObj(); |
---|
1120 | |
---|
1121 | // do conversions |
---|
1122 | factor = 1; |
---|
1123 | factor = fromUnits->convert(toUnits, factor, &convResult); |
---|
1124 | numVal *= pow(factor,toIter->getExponent()); |
---|
1125 | } |
---|
1126 | |
---|
1127 | // remove the elements from the lists |
---|
1128 | tempIter = toIter; |
---|
1129 | toIter = toUnitsList.erase(tempIter); |
---|
1130 | // toUnitsList.erase(tempIter); |
---|
1131 | // toIter++; |
---|
1132 | |
---|
1133 | tempIter = fromIter; |
---|
1134 | fromUnitsList.erase(tempIter); |
---|
1135 | } |
---|
1136 | else { |
---|
1137 | // this is not an intra-basis conversion. |
---|
1138 | // move onto the next toIter |
---|
1139 | toIter++; |
---|
1140 | } |
---|
1141 | } |
---|
1142 | |
---|
1143 | toIter = toUnitsList.begin(); |
---|
1144 | fromIter = fromUnitsList.begin(); |
---|
1145 | |
---|
1146 | // pass 2: look for inter-basis conversions |
---|
1147 | if (fromIter != fromUnitsList.end()) { |
---|
1148 | // double while loop to compare each toIter with each fromIter. |
---|
1149 | // the outter while checks the toIter and the inner while |
---|
1150 | // which is conveniently hidden, adjusts the fromIter and toIter |
---|
1151 | // (at the bottom in the else statement). |
---|
1152 | while (toIter != toUnitsList.end()) { |
---|
1153 | |
---|
1154 | toUnits = toIter->getUnitsObj(); |
---|
1155 | fromUnits = fromIter->getUnitsObj(); |
---|
1156 | |
---|
1157 | // do an inter-basis conversion...the slow way |
---|
1158 | // there has to be a better way to do this... |
---|
1159 | convResult = 1; |
---|
1160 | |
---|
1161 | // in order to convert, exponents must be equal. |
---|
1162 | fromExp = fromIter->getExponent(); |
---|
1163 | toExp = toIter->getExponent(); |
---|
1164 | |
---|
1165 | if (fromExp == toExp) { |
---|
1166 | if (toExp == 1) { |
---|
1167 | numVal = fromUnits->convert(toUnits, numVal, &convResult); |
---|
1168 | } |
---|
1169 | else { |
---|
1170 | factor = 1; |
---|
1171 | factor = fromUnits->convert(toUnits, factor, &convResult); |
---|
1172 | numVal *= pow(factor,toExp); |
---|
1173 | } |
---|
1174 | } |
---|
1175 | |
---|
1176 | if (convResult == 0) { |
---|
1177 | // successful conversion reported |
---|
1178 | // remove the elements from the lists |
---|
1179 | tempIter = toIter; |
---|
1180 | toUnitsList.erase(tempIter); |
---|
1181 | toIter++; |
---|
1182 | |
---|
1183 | tempIter = fromIter; |
---|
1184 | fromUnitsList.erase(tempIter); |
---|
1185 | |
---|
1186 | // conversion complete, jump out of the |
---|
1187 | // while loop |
---|
1188 | break; |
---|
1189 | } |
---|
1190 | else { |
---|
1191 | // conversion was unsuccessful |
---|
1192 | // move onto the next fromIter |
---|
1193 | fromIter++; |
---|
1194 | if (fromIter == fromUnitsList.end()) { |
---|
1195 | // this is not an inter-basis conversion. |
---|
1196 | // move onto the next toIter |
---|
1197 | fromIter = fromUnitsList.begin(); |
---|
1198 | toIter++; |
---|
1199 | } |
---|
1200 | } // end unsuccessful conversion |
---|
1201 | } // end toIter while loop |
---|
1202 | } // end |
---|
1203 | |
---|
1204 | |
---|
1205 | |
---|
1206 | if ( (result) && (*result == 0) ) { |
---|
1207 | *result = convResult; |
---|
1208 | } |
---|
1209 | |
---|
1210 | if (showUnits) { |
---|
1211 | outVal << numVal << toUnitsName; |
---|
1212 | } |
---|
1213 | else { |
---|
1214 | outVal << numVal; |
---|
1215 | } |
---|
1216 | |
---|
1217 | return std::string(outVal.str()); |
---|
1218 | |
---|
1219 | } |
---|
1220 | |
---|
1221 | /**********************************************************************/ |
---|
1222 | // METHOD: convert() |
---|
1223 | /// Convert between RpUnits return a string value with or without units |
---|
1224 | /** |
---|
1225 | * Returns a string value with or without units. |
---|
1226 | */ |
---|
1227 | |
---|
1228 | std::string |
---|
1229 | RpUnits::convert ( const RpUnits* toUnits, |
---|
1230 | double val, |
---|
1231 | int showUnits, |
---|
1232 | int* result ) const { |
---|
1233 | |
---|
1234 | double retVal = convert(toUnits,val,result); |
---|
1235 | std::stringstream unitText; |
---|
1236 | |
---|
1237 | |
---|
1238 | if (showUnits) { |
---|
1239 | unitText << retVal << toUnits->getUnitsName(); |
---|
1240 | } |
---|
1241 | else { |
---|
1242 | unitText << retVal; |
---|
1243 | } |
---|
1244 | |
---|
1245 | return (std::string(unitText.str())); |
---|
1246 | |
---|
1247 | } |
---|
1248 | |
---|
1249 | /**********************************************************************/ |
---|
1250 | // METHOD: convert() |
---|
1251 | /// Convert between RpUnits using an RpUnits Object to describe toUnit. |
---|
1252 | /** |
---|
1253 | * User function to convert a value to the provided RpUnits* toUnits |
---|
1254 | * if it exists as a conversion from the basis |
---|
1255 | * example |
---|
1256 | * cm.convert(meter,10) |
---|
1257 | * cm.convert(angstrum,100) |
---|
1258 | * |
---|
1259 | * Returns a double value without units. |
---|
1260 | */ |
---|
1261 | |
---|
1262 | double |
---|
1263 | RpUnits::convert(const RpUnits* toUnit, double val, int* result) const { |
---|
1264 | |
---|
1265 | // currently we convert this object to its basis and look for the |
---|
1266 | // connection to the toUnit object from the basis. |
---|
1267 | |
---|
1268 | double value = val; |
---|
1269 | const RpUnits* toBasis = toUnit->getBasis(); |
---|
1270 | const RpUnits* fromUnit = this; |
---|
1271 | const RpUnits* dictToUnit = NULL; |
---|
1272 | convEntry *p; |
---|
1273 | int my_result = 0; |
---|
1274 | |
---|
1275 | // set *result to a default value |
---|
1276 | if (result) { |
---|
1277 | *result = 1; |
---|
1278 | } |
---|
1279 | |
---|
1280 | // guard against converting to the units you are converting from... |
---|
1281 | // ie. meters->meters |
---|
1282 | if (this->getUnitsName() == toUnit->getUnitsName()) { |
---|
1283 | if (result) { |
---|
1284 | *result = 0; |
---|
1285 | } |
---|
1286 | return val; |
---|
1287 | } |
---|
1288 | |
---|
1289 | // convert unit to the basis |
---|
1290 | // makeBasis(&value); |
---|
1291 | // trying to avoid the recursive way of converting to the basis. |
---|
1292 | // need to rethink this. |
---|
1293 | // |
---|
1294 | if ( (basis) && (basis->getUnitsName() != toUnit->getUnitsName()) ) { |
---|
1295 | value = convert(basis,value,&my_result); |
---|
1296 | if (my_result == 0) { |
---|
1297 | fromUnit = basis; |
---|
1298 | } |
---|
1299 | } |
---|
1300 | |
---|
1301 | // find the toUnit in our dictionary. |
---|
1302 | // if the toUnits has a basis, we need to search for the basis |
---|
1303 | // and convert between basis' and then convert again back to the |
---|
1304 | // original unit. |
---|
1305 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
1306 | dictToUnit = find(toBasis->getUnitsName()); |
---|
1307 | } |
---|
1308 | else { |
---|
1309 | dictToUnit = find(toUnit->getUnitsName()); |
---|
1310 | } |
---|
1311 | |
---|
1312 | // did we find the unit in the dictionary? |
---|
1313 | if (dictToUnit == NULL) { |
---|
1314 | // toUnit was not found in the dictionary |
---|
1315 | return val; |
---|
1316 | } |
---|
1317 | |
---|
1318 | // search through the conversion list to find |
---|
1319 | // the conversion to the toUnit. |
---|
1320 | |
---|
1321 | if (basis) { |
---|
1322 | p = basis->convList; |
---|
1323 | } |
---|
1324 | else { |
---|
1325 | p = this->convList; |
---|
1326 | } |
---|
1327 | |
---|
1328 | if (p == NULL) { |
---|
1329 | // there are no conversions |
---|
1330 | return val; |
---|
1331 | } |
---|
1332 | |
---|
1333 | // loop through our conversion list looking for the correct conversion |
---|
1334 | do { |
---|
1335 | |
---|
1336 | if ( (p->conv->toPtr == dictToUnit) && (p->conv->fromPtr == fromUnit) ) { |
---|
1337 | // we found our conversion |
---|
1338 | // call the function pointer with value |
---|
1339 | |
---|
1340 | // this should probably be re thought out |
---|
1341 | // the problem is that convForwFxnPtr has the conversion for a |
---|
1342 | // one arg conv function pointer and convForwFxnPtrDD has the |
---|
1343 | // conversion for a two arg conv function pointer |
---|
1344 | // need to make this simpler, more logical maybe only allow 2 arg |
---|
1345 | if ( (p->conv->convForwFxnPtr) |
---|
1346 | && (! p->conv->convForwFxnPtrDD) ) { |
---|
1347 | |
---|
1348 | value = p->conv->convForwFxnPtr(value); |
---|
1349 | } |
---|
1350 | else if ( (p->conv->convForwFxnPtrDD) |
---|
1351 | && (! p->conv->convForwFxnPtr) ) { |
---|
1352 | |
---|
1353 | value = |
---|
1354 | p->conv->convForwFxnPtrDD(value, fromUnit->getExponent()); |
---|
1355 | } |
---|
1356 | |
---|
1357 | // check to see if we converted to the actual requested unit |
---|
1358 | // or to the requested unit's basis. |
---|
1359 | // if we converted to the requested unit's basis. we need to |
---|
1360 | // do one last conversion from the requested unit's basis back |
---|
1361 | // to the requested unit. |
---|
1362 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
1363 | my_result = 0; |
---|
1364 | value = toBasis->convert(toUnit,value,&my_result); |
---|
1365 | if (my_result != 0) { |
---|
1366 | if (result) { |
---|
1367 | *result += 1; |
---|
1368 | } |
---|
1369 | } |
---|
1370 | } |
---|
1371 | |
---|
1372 | // change the result code to zero, a conversion was performed |
---|
1373 | // (we think)... its ture that it is possible to get to this |
---|
1374 | // point and have skipped the conversion because the |
---|
1375 | // conversion object was not properly created... |
---|
1376 | // ie. both fxn ptrs were null or neither fxn ptr was null |
---|
1377 | // |
---|
1378 | if (result && (*result == 1)) { |
---|
1379 | *result = 0; |
---|
1380 | } |
---|
1381 | break; |
---|
1382 | } |
---|
1383 | |
---|
1384 | if ( (p->conv->toPtr == fromUnit) && (p->conv->fromPtr == dictToUnit) ) { |
---|
1385 | // we found our conversion |
---|
1386 | // call the function pointer with value |
---|
1387 | |
---|
1388 | // this should probably be re thought out |
---|
1389 | // the problem is that convForwFxnPtr has the conversion for a |
---|
1390 | // one arg conv function pointer and convForwFxnPtrDD has the |
---|
1391 | // conversion for a two arg conv function pointer |
---|
1392 | // need to make this simpler, more logical maybe only allow 2 arg |
---|
1393 | if ( (p->conv->convBackFxnPtr) |
---|
1394 | && (! p->conv->convBackFxnPtrDD) ) { |
---|
1395 | |
---|
1396 | value = p->conv->convBackFxnPtr(value); |
---|
1397 | } |
---|
1398 | else if ( (p->conv->convBackFxnPtrDD) |
---|
1399 | && (! p->conv->convBackFxnPtr) ) { |
---|
1400 | |
---|
1401 | value = |
---|
1402 | p->conv->convBackFxnPtrDD(value, fromUnit->getExponent()); |
---|
1403 | } |
---|
1404 | |
---|
1405 | // check to see if we converted to the actual requested unit |
---|
1406 | // or to the requested unit's basis. |
---|
1407 | // if we converted to the requested unit's basis. we need to |
---|
1408 | // do one last conversion from the requested unit's basis back |
---|
1409 | // to the requested unit. |
---|
1410 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
1411 | my_result = 0; |
---|
1412 | value = toBasis->convert(toUnit,value,&my_result); |
---|
1413 | if (my_result != 0) { |
---|
1414 | if (result) { |
---|
1415 | *result += 1; |
---|
1416 | } |
---|
1417 | } |
---|
1418 | } |
---|
1419 | |
---|
1420 | // change the result code to zero, a conversion was performed |
---|
1421 | // (we think)... its ture that it is possible to get to this |
---|
1422 | // point and have skipped the conversion because the |
---|
1423 | // conversion object was not properly created... |
---|
1424 | // ie. both fxn ptrs were null or neither fxn ptr was null |
---|
1425 | // |
---|
1426 | if (result && (*result == 1)) { |
---|
1427 | *result = 0; |
---|
1428 | } |
---|
1429 | break; |
---|
1430 | } |
---|
1431 | |
---|
1432 | p = p->next; |
---|
1433 | |
---|
1434 | } while (p != NULL); |
---|
1435 | |
---|
1436 | |
---|
1437 | if ( p == NULL) { |
---|
1438 | // we did not find the conversion |
---|
1439 | if (result) { |
---|
1440 | *result += 1; |
---|
1441 | } |
---|
1442 | return val; |
---|
1443 | } |
---|
1444 | |
---|
1445 | // we found the conversion. |
---|
1446 | // return the converted value. |
---|
1447 | return value; |
---|
1448 | |
---|
1449 | } |
---|
1450 | |
---|
1451 | |
---|
1452 | /**********************************************************************/ |
---|
1453 | // METHOD: convert() |
---|
1454 | /// Convert a value between RpUnits using user defined conversions |
---|
1455 | /** |
---|
1456 | */ |
---|
1457 | |
---|
1458 | void* |
---|
1459 | RpUnits::convert(const RpUnits* toUnit, void* val, int* result) const { |
---|
1460 | |
---|
1461 | // currently we convert this object to its basis and look for the |
---|
1462 | // connection ot the toUnit object from the basis. |
---|
1463 | |
---|
1464 | void* value = val; |
---|
1465 | const RpUnits* toBasis = toUnit->getBasis(); |
---|
1466 | const RpUnits* fromUnit = this; |
---|
1467 | const RpUnits* dictToUnit = NULL; |
---|
1468 | convEntry *p; |
---|
1469 | int my_result = 0; |
---|
1470 | |
---|
1471 | // set *result to a default value |
---|
1472 | if (result) { |
---|
1473 | *result = 1; |
---|
1474 | } |
---|
1475 | |
---|
1476 | // guard against converting to the units you are converting from... |
---|
1477 | // ie. meters->meters |
---|
1478 | if (this->getUnitsName() == toUnit->getUnitsName()) { |
---|
1479 | if (result) { |
---|
1480 | *result = 0; |
---|
1481 | } |
---|
1482 | return val; |
---|
1483 | } |
---|
1484 | |
---|
1485 | // convert unit to the basis |
---|
1486 | // makeBasis(&value); |
---|
1487 | // trying to avoid the recursive way of converting to the basis. |
---|
1488 | // need to rethink this. |
---|
1489 | // |
---|
1490 | if ( (basis) && (basis->getUnitsName() != toUnit->getUnitsName()) ) { |
---|
1491 | value = convert(basis,value,&my_result); |
---|
1492 | if (my_result == 0) { |
---|
1493 | fromUnit = basis; |
---|
1494 | } |
---|
1495 | } |
---|
1496 | |
---|
1497 | // find the toUnit in our dictionary. |
---|
1498 | // if the toUnits has a basis, we need to search for the basis |
---|
1499 | // and convert between basis' and then convert again back to the |
---|
1500 | // original unit. |
---|
1501 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
1502 | dictToUnit = find(toBasis->getUnitsName()); |
---|
1503 | } |
---|
1504 | else { |
---|
1505 | dictToUnit = find(toUnit->getUnitsName()); |
---|
1506 | } |
---|
1507 | |
---|
1508 | // did we find the unit in the dictionary? |
---|
1509 | if (dictToUnit == NULL) { |
---|
1510 | // toUnit was not found in the dictionary |
---|
1511 | return val; |
---|
1512 | } |
---|
1513 | |
---|
1514 | // search through the conversion list to find |
---|
1515 | // the conversion to the toUnit. |
---|
1516 | |
---|
1517 | if (basis) { |
---|
1518 | p = basis->convList; |
---|
1519 | } |
---|
1520 | else { |
---|
1521 | p = this->convList; |
---|
1522 | } |
---|
1523 | |
---|
1524 | if (p == NULL) { |
---|
1525 | // there are no conversions |
---|
1526 | return val; |
---|
1527 | } |
---|
1528 | |
---|
1529 | // loop through our conversion list looking for the correct conversion |
---|
1530 | do { |
---|
1531 | |
---|
1532 | if ( (p->conv->toPtr == dictToUnit) && (p->conv->fromPtr == fromUnit) ) { |
---|
1533 | // we found our conversion |
---|
1534 | // call the function pointer with value |
---|
1535 | |
---|
1536 | value = p->conv->convForwFxnPtrVoid(p->conv->convForwData,value); |
---|
1537 | |
---|
1538 | // check to see if we converted to the actual requested unit |
---|
1539 | // or to the requested unit's basis. |
---|
1540 | // if we converted to the requested unit's basis. we need to |
---|
1541 | // do one last conversion from the requested unit's basis back |
---|
1542 | // to the requested unit. |
---|
1543 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
1544 | my_result = 0; |
---|
1545 | value = toBasis->convert(toUnit,value,&my_result); |
---|
1546 | if (my_result != 0) { |
---|
1547 | if (result) { |
---|
1548 | *result += 1; |
---|
1549 | } |
---|
1550 | } |
---|
1551 | } |
---|
1552 | |
---|
1553 | // change the result code to zero, a conversion was performed |
---|
1554 | // (we think)... its ture that it is possible to get to this |
---|
1555 | // point and have skipped the conversion because the |
---|
1556 | // conversion object was not properly created... |
---|
1557 | // ie. both fxn ptrs were null or neither fxn ptr was null |
---|
1558 | // |
---|
1559 | if (result && (*result == 1)) { |
---|
1560 | *result = 0; |
---|
1561 | } |
---|
1562 | break; |
---|
1563 | } |
---|
1564 | |
---|
1565 | if ( (p->conv->toPtr == fromUnit) && (p->conv->fromPtr == dictToUnit) ) { |
---|
1566 | // we found our conversion |
---|
1567 | // call the function pointer with value |
---|
1568 | |
---|
1569 | value = p->conv->convBackFxnPtrVoid(p->conv->convBackData,value); |
---|
1570 | |
---|
1571 | // check to see if we converted to the actual requested unit |
---|
1572 | // or to the requested unit's basis. |
---|
1573 | // if we converted to the requested unit's basis. we need to |
---|
1574 | // do one last conversion from the requested unit's basis back |
---|
1575 | // to the requested unit. |
---|
1576 | if ( (toBasis) && (toBasis->getUnitsName() != fromUnit->getUnitsName()) ) { |
---|
1577 | my_result = 0; |
---|
1578 | value = toBasis->convert(toUnit,value,&my_result); |
---|
1579 | if (my_result != 0) { |
---|
1580 | if (result) { |
---|
1581 | *result += 1; |
---|
1582 | } |
---|
1583 | } |
---|
1584 | } |
---|
1585 | |
---|
1586 | // change the result code to zero, a conversion was performed |
---|
1587 | // (we think)... its ture that it is possible to get to this |
---|
1588 | // point and have skipped the conversion because the |
---|
1589 | // conversion object was not properly created... |
---|
1590 | // ie. both fxn ptrs were null or neither fxn ptr was null |
---|
1591 | // |
---|
1592 | if (result && (*result == 1)) { |
---|
1593 | *result = 0; |
---|
1594 | } |
---|
1595 | break; |
---|
1596 | } |
---|
1597 | |
---|
1598 | p = p->next; |
---|
1599 | |
---|
1600 | } while (p != NULL); |
---|
1601 | |
---|
1602 | |
---|
1603 | if ( p == NULL) { |
---|
1604 | // we did not find the conversion |
---|
1605 | if (result) { |
---|
1606 | *result += 1; |
---|
1607 | } |
---|
1608 | return val; |
---|
1609 | } |
---|
1610 | |
---|
1611 | // we found the conversion. |
---|
1612 | // return the converted value. |
---|
1613 | return value; |
---|
1614 | |
---|
1615 | } |
---|
1616 | |
---|
1617 | /**********************************************************************/ |
---|
1618 | // METHOD: insert() |
---|
1619 | /// Place an RpUnits Object into the Rappture Units Dictionary. |
---|
1620 | /** |
---|
1621 | * Return whether the inserted key was new with a non-zero |
---|
1622 | * value, or if the key already existed with a value of zero. |
---|
1623 | */ |
---|
1624 | |
---|
1625 | int |
---|
1626 | insert(std::string key,RpUnits* val) { |
---|
1627 | |
---|
1628 | int newRecord = 0; |
---|
1629 | // RpUnits* val = this; |
---|
1630 | // dict pointer |
---|
1631 | RpUnits::dict->set(key,val,&newRecord); |
---|
1632 | return newRecord; |
---|
1633 | } |
---|
1634 | |
---|
1635 | /**********************************************************************/ |
---|
1636 | // METHOD: connectConversion() |
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1637 | /// Attach conversion information to a RpUnits Object. |
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1638 | /** |
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1639 | */ |
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1640 | |
---|
1641 | void |
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1642 | RpUnits::connectConversion(conversion* conv) const { |
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1643 | |
---|
1644 | convEntry* p = convList; |
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1645 | |
---|
1646 | if (p == NULL) { |
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1647 | convList = new convEntry (conv,NULL,NULL); |
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1648 | } |
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1649 | else { |
---|
1650 | while (p->next != NULL) { |
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1651 | p = p->next; |
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1652 | } |
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1653 | |
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1654 | p->next = new convEntry (conv,p,NULL); |
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1655 | } |
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1656 | |
---|
1657 | } |
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1658 | |
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1659 | /**********************************************************************/ |
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1660 | // METHOD: addPresets() |
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1661 | /// Add a specific set of predefined units to the dictionary |
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1662 | /** |
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1663 | */ |
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1664 | |
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1665 | int |
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1666 | RpUnits::addPresets (const std::string group) { |
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1667 | int retVal = -1; |
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1668 | if (group.compare("all") == 0) { |
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1669 | retVal = RpUnitsPreset::addPresetAll(); |
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1670 | } |
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1671 | else if (group.compare("energy") == 0) { |
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1672 | retVal = RpUnitsPreset::addPresetEnergy(); |
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1673 | } |
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1674 | else if (group.compare("length") == 0) { |
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1675 | retVal = RpUnitsPreset::addPresetLength(); |
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1676 | } |
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1677 | else if (group.compare("temp") == 0) { |
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1678 | retVal = RpUnitsPreset::addPresetTemp(); |
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1679 | } |
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1680 | else if (group.compare("time") == 0) { |
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1681 | retVal = RpUnitsPreset::addPresetTime(); |
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1682 | } |
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1683 | else if (group.compare("volume") == 0) { |
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1684 | retVal = RpUnitsPreset::addPresetVolume(); |
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1685 | } |
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1686 | else if (group.compare("angle") == 0) { |
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1687 | retVal = RpUnitsPreset::addPresetAngle(); |
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1688 | } |
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1689 | |
---|
1690 | return retVal; |
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1691 | } |
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1692 | |
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1693 | /**********************************************************************/ |
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1694 | // METHOD: addPresetAll() |
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1695 | /// Call all of the addPreset* functions. |
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1696 | /** |
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1697 | * |
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1698 | * Add all predefined units to the units dictionary |
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1699 | * Return codes: 0 success, anything else is error |
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1700 | */ |
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1701 | |
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1702 | int |
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1703 | RpUnitsPreset::addPresetAll () { |
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1704 | |
---|
1705 | int result = 0; |
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1706 | |
---|
1707 | result += addPresetTime(); |
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1708 | result += addPresetTemp(); |
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1709 | result += addPresetLength(); |
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1710 | result += addPresetEnergy(); |
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1711 | result += addPresetVolume(); |
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1712 | result += addPresetAngle(); |
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1713 | result += addPresetMass(); |
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1714 | result += addPresetMisc(); |
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1715 | |
---|
1716 | return 0; |
---|
1717 | } |
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1718 | |
---|
1719 | /**********************************************************************/ |
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1720 | // METHOD: addPresetTime() |
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1721 | /// Add Time related units to the dictionary |
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1722 | /** |
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1723 | * Defines the following units: |
---|
1724 | * seconds (s) |
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1725 | * |
---|
1726 | * Return codes: 0 success, anything else is error |
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1727 | */ |
---|
1728 | |
---|
1729 | int |
---|
1730 | RpUnitsPreset::addPresetTime () { |
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1731 | |
---|
1732 | RpUnits* seconds = RpUnits::define("s", NULL, RP_TYPE_TIME); |
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1733 | |
---|
1734 | RpUnits::makeMetric(seconds); |
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1735 | |
---|
1736 | // add time definitions |
---|
1737 | |
---|
1738 | return 0; |
---|
1739 | } |
---|
1740 | |
---|
1741 | /**********************************************************************/ |
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1742 | // METHOD: addPresetTemp() |
---|
1743 | /// Add Temperature related units to the dictionary |
---|
1744 | /** |
---|
1745 | * Defines the following units: |
---|
1746 | * fahrenheit (F) |
---|
1747 | * celcius (C) |
---|
1748 | * kelvin (K) |
---|
1749 | * rankine (R) |
---|
1750 | * |
---|
1751 | * Return codes: 0 success, anything else is error |
---|
1752 | */ |
---|
1753 | |
---|
1754 | int |
---|
1755 | RpUnitsPreset::addPresetTemp () { |
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1756 | |
---|
1757 | RpUnits* fahrenheit = RpUnits::define("F", NULL, RP_TYPE_TEMP); |
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1758 | RpUnits* celcius = RpUnits::define("C", NULL, RP_TYPE_TEMP); |
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1759 | RpUnits* kelvin = RpUnits::define("K", NULL, RP_TYPE_TEMP); |
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1760 | RpUnits* rankine = RpUnits::define("R", NULL, RP_TYPE_TEMP); |
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1761 | |
---|
1762 | // add temperature definitions |
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1763 | RpUnits::define(fahrenheit, celcius, fahrenheit2centigrade, centigrade2fahrenheit); |
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1764 | RpUnits::define(celcius, kelvin, centigrade2kelvin, kelvin2centigrade); |
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1765 | RpUnits::define(fahrenheit, kelvin, fahrenheit2kelvin, kelvin2fahrenheit); |
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1766 | RpUnits::define(rankine, kelvin, rankine2kelvin, kelvin2rankine); |
---|
1767 | |
---|
1768 | return 0; |
---|
1769 | } |
---|
1770 | |
---|
1771 | /**********************************************************************/ |
---|
1772 | // METHOD: addPresetLength() |
---|
1773 | /// Add Length related units to the dictionary |
---|
1774 | /** |
---|
1775 | * Defines the following units: |
---|
1776 | * meters (m) |
---|
1777 | * angstrom (A) |
---|
1778 | * inch (in) |
---|
1779 | * feet (ft) |
---|
1780 | * yard (yd) |
---|
1781 | * |
---|
1782 | * Return codes: 0 success, anything else is error |
---|
1783 | */ |
---|
1784 | |
---|
1785 | int |
---|
1786 | RpUnitsPreset::addPresetLength () { |
---|
1787 | |
---|
1788 | RpUnits* meters = RpUnits::define("m", NULL, RP_TYPE_LENGTH); |
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1789 | RpUnits* angstrom = RpUnits::define("A", NULL, RP_TYPE_LENGTH); |
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1790 | RpUnits* inch = RpUnits::define("in", NULL, RP_TYPE_LENGTH); |
---|
1791 | RpUnits* feet = RpUnits::define("ft", NULL, RP_TYPE_LENGTH); |
---|
1792 | RpUnits* yard = RpUnits::define("yd", NULL, RP_TYPE_LENGTH); |
---|
1793 | |
---|
1794 | RpUnits::makeMetric(meters); |
---|
1795 | |
---|
1796 | // add length definitions |
---|
1797 | RpUnits::define(angstrom, meters, angstrom2meter, meter2angstrom); |
---|
1798 | RpUnits::define(inch, meters, inch2meter, meter2inch); |
---|
1799 | RpUnits::define(feet, meters, feet2meter, meter2feet); |
---|
1800 | RpUnits::define(yard, meters, yard2meter, meter2yard); |
---|
1801 | |
---|
1802 | return 0; |
---|
1803 | } |
---|
1804 | |
---|
1805 | /**********************************************************************/ |
---|
1806 | // METHOD: addPresetEnergy() |
---|
1807 | /// Add Energy related units to the dictionary |
---|
1808 | /** |
---|
1809 | * Defines the following units: |
---|
1810 | * volt (V) |
---|
1811 | * electron Volt (eV) |
---|
1812 | * joule (J) |
---|
1813 | * |
---|
1814 | * Return codes: 0 success, anything else is error |
---|
1815 | */ |
---|
1816 | |
---|
1817 | int |
---|
1818 | RpUnitsPreset::addPresetEnergy () { |
---|
1819 | |
---|
1820 | RpUnits* volt = RpUnits::define("V", NULL, RP_TYPE_ENERGY); |
---|
1821 | RpUnits* eVolt = RpUnits::define("eV", NULL, RP_TYPE_ENERGY); |
---|
1822 | RpUnits* joule = RpUnits::define("J", NULL, RP_TYPE_ENERGY); |
---|
1823 | |
---|
1824 | RpUnits::makeMetric(volt); |
---|
1825 | RpUnits::makeMetric(eVolt); |
---|
1826 | RpUnits::makeMetric(joule); |
---|
1827 | |
---|
1828 | // add energy definitions |
---|
1829 | RpUnits::define(eVolt,joule,electronVolt2joule,joule2electronVolt); |
---|
1830 | |
---|
1831 | return 0; |
---|
1832 | } |
---|
1833 | |
---|
1834 | /**********************************************************************/ |
---|
1835 | // METHOD: addPresetVolume() |
---|
1836 | /// Add Volume related units to the dictionary |
---|
1837 | /** |
---|
1838 | * Defines the following units: |
---|
1839 | * cubic feet (ft3) |
---|
1840 | * us gallons (gal) |
---|
1841 | * |
---|
1842 | * Return codes: 0 success, anything else is error |
---|
1843 | */ |
---|
1844 | |
---|
1845 | int |
---|
1846 | RpUnitsPreset::addPresetVolume () { |
---|
1847 | |
---|
1848 | RpUnits* cubic_meter = RpUnits::define("m3", NULL, RP_TYPE_VOLUME); |
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1849 | // RpUnits* pcubic_meter = RpUnits::define("/m3", NULL, RP_TYPE_VOLUME); |
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1850 | RpUnits* cubic_feet = RpUnits::define("ft3", NULL, RP_TYPE_VOLUME); |
---|
1851 | RpUnits* us_gallon = RpUnits::define("gal", NULL, RP_TYPE_VOLUME); |
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1852 | |
---|
1853 | RpUnits::makeMetric(cubic_meter); |
---|
1854 | |
---|
1855 | // add energy definitions |
---|
1856 | RpUnits::define(cubic_meter,cubic_feet,meter2feet,feet2meter); |
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1857 | RpUnits::define(cubic_meter,us_gallon,cubicMeter2usGallon,usGallon2cubicMeter); |
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1858 | RpUnits::define(cubic_feet,us_gallon,cubicFeet2usGallon,usGallon2cubicFeet); |
---|
1859 | |
---|
1860 | return 0; |
---|
1861 | } |
---|
1862 | |
---|
1863 | /**********************************************************************/ |
---|
1864 | // METHOD: addPresetAngle() |
---|
1865 | /// Add Angle related units to the dictionary |
---|
1866 | /** |
---|
1867 | * Defines the following units: |
---|
1868 | * degrees (deg) |
---|
1869 | * gradians (grad) |
---|
1870 | * radians (rad) (and metric extensions) |
---|
1871 | * |
---|
1872 | * Return codes: 0 success, anything else is error |
---|
1873 | */ |
---|
1874 | |
---|
1875 | int |
---|
1876 | RpUnitsPreset::addPresetAngle () { |
---|
1877 | |
---|
1878 | RpUnits* degree = RpUnits::define("deg", NULL, RP_TYPE_ANGLE); |
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1879 | RpUnits* gradian = RpUnits::define("grad", NULL, RP_TYPE_ANGLE); |
---|
1880 | RpUnits* radian = RpUnits::define("rad", NULL, RP_TYPE_ANGLE); |
---|
1881 | |
---|
1882 | RpUnits::makeMetric(radian); |
---|
1883 | |
---|
1884 | // add angle definitions |
---|
1885 | RpUnits::define(degree,gradian,deg2grad,grad2deg); |
---|
1886 | RpUnits::define(radian,degree,rad2deg,deg2rad); |
---|
1887 | RpUnits::define(radian,gradian,rad2grad,grad2rad); |
---|
1888 | |
---|
1889 | return 0; |
---|
1890 | } |
---|
1891 | |
---|
1892 | /**********************************************************************/ |
---|
1893 | // METHOD: addPresetMass() |
---|
1894 | /// Add Mass related units to the dictionary |
---|
1895 | /** |
---|
1896 | * Defines the following units: |
---|
1897 | * gram (g) |
---|
1898 | * |
---|
1899 | * Return codes: 0 success, anything else is error |
---|
1900 | */ |
---|
1901 | |
---|
1902 | int |
---|
1903 | RpUnitsPreset::addPresetMass () { |
---|
1904 | |
---|
1905 | RpUnits* gram = RpUnits::define("g", NULL, RP_TYPE_MASS); |
---|
1906 | |
---|
1907 | RpUnits::makeMetric(gram); |
---|
1908 | |
---|
1909 | // add mass definitions |
---|
1910 | // RpUnits::define(radian,gradian,rad2grad,grad2rad); |
---|
1911 | |
---|
1912 | return 0; |
---|
1913 | } |
---|
1914 | |
---|
1915 | /**********************************************************************/ |
---|
1916 | // METHOD: addPresetMisc() |
---|
1917 | /// Add Misc related units to the dictionary |
---|
1918 | /** |
---|
1919 | * Defines the following units: |
---|
1920 | * mole (mol) |
---|
1921 | * |
---|
1922 | * Return codes: 0 success, anything else is error |
---|
1923 | */ |
---|
1924 | |
---|
1925 | int |
---|
1926 | RpUnitsPreset::addPresetMisc () { |
---|
1927 | |
---|
1928 | RpUnits* mole = RpUnits::define("mol", NULL, RP_TYPE_MISC); |
---|
1929 | |
---|
1930 | RpUnits::makeMetric(mole); |
---|
1931 | |
---|
1932 | // add misc definitions |
---|
1933 | // RpUnits::define(radian,gradian,rad2grad,grad2rad); |
---|
1934 | |
---|
1935 | return 0; |
---|
1936 | } |
---|
1937 | |
---|
1938 | // -------------------------------------------------------------------- // |
---|
1939 | |
---|