1 | /* |
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2 | * ---------------------------------------------------------------------- |
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3 | * Rappture 2.0 Array1DUniform Object Source |
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4 | * |
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5 | * ====================================================================== |
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6 | * AUTHOR: Derrick Kearney, Purdue University |
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7 | * Copyright (c) 2005-2009 Purdue Research Foundation |
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8 | * |
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9 | * See the file "license.terms" for information on usage and |
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10 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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11 | * ====================================================================== |
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12 | */ |
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13 | |
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14 | #include <limits> |
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15 | #include <cmath> |
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16 | #include "RpArray1DUniform.h" |
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17 | |
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18 | using namespace Rappture; |
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19 | |
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20 | const char Array1DUniform::type[] = "RAPPTURE_AXIS_TYPE_UNIFORM"; |
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21 | |
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22 | Array1DUniform::Array1DUniform() |
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23 | : Array1D(), |
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24 | _step(0) |
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25 | {} |
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26 | |
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27 | Array1DUniform::Array1DUniform(double min, double max, double step) |
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28 | : Array1D(), |
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29 | _step(step) |
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30 | { |
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31 | this->min(min); |
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32 | this->max(max); |
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33 | __fillBuffer(); |
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34 | } |
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35 | |
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36 | Array1DUniform::Array1DUniform(double min, double max, size_t nmemb) |
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37 | : Array1D(), |
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38 | _step(0) |
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39 | { |
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40 | this->min(min); |
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41 | this->max(max); |
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42 | this->step(__calcStepFromNmemb(nmemb)); |
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43 | __fillBuffer(); |
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44 | } |
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45 | |
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46 | // copy constructor |
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47 | Array1DUniform::Array1DUniform ( const Array1DUniform& o ) |
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48 | : Array1D(o), |
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49 | _step(o._step) |
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50 | {} |
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51 | |
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52 | // default destructor |
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53 | Array1DUniform::~Array1DUniform () |
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54 | { |
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55 | // clean up dynamic memory |
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56 | } |
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57 | |
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58 | /**********************************************************************/ |
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59 | // METHOD: min() |
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60 | /// Set the min value and refill buffer |
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61 | /** |
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62 | * Set the min value and refill buffer |
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63 | */ |
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64 | |
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65 | void |
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66 | Array1DUniform::min(double min) |
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67 | { |
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68 | _min = min; |
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69 | clear(); |
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70 | __fillBuffer(); |
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71 | return; |
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72 | } |
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73 | |
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74 | /**********************************************************************/ |
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75 | // METHOD: max() |
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76 | /// Set the max value and refill buffer |
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77 | /** |
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78 | * Set the max value and refill buffer |
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79 | */ |
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80 | |
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81 | void |
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82 | Array1DUniform::max(double max) |
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83 | { |
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84 | _max = max; |
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85 | clear(); |
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86 | __fillBuffer(); |
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87 | return; |
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88 | } |
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89 | |
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90 | /**********************************************************************/ |
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91 | // METHOD: step() |
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92 | /// Get the step value |
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93 | /** |
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94 | * Get the step value |
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95 | */ |
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96 | |
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97 | double |
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98 | Array1DUniform::step(void) const |
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99 | { |
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100 | return _step; |
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101 | } |
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102 | |
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103 | /**********************************************************************/ |
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104 | // METHOD: step() |
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105 | /// Set the step value and refill buffer |
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106 | /** |
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107 | * Set the step value and refill buffer |
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108 | */ |
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109 | |
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110 | void |
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111 | Array1DUniform::step(double step) |
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112 | { |
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113 | _step = step; |
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114 | clear(); |
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115 | __fillBuffer(); |
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116 | return; |
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117 | } |
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118 | |
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119 | double |
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120 | Array1DUniform::__calcStepFromNmemb(size_t nmemb) |
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121 | { |
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122 | double newstep = 0.0; |
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123 | |
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124 | if (nmemb != 0) { |
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125 | newstep = (Array1D::max()-Array1D::min()+1)/nmemb; |
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126 | } |
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127 | |
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128 | return newstep; |
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129 | } |
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130 | |
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131 | size_t |
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132 | Array1DUniform::__calcNmembFromStep(double step) |
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133 | { |
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134 | size_t nmemb = 0; |
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135 | |
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136 | if (step != 0) { |
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137 | nmemb = (size_t) round((Array1D::max()-Array1D::min()+1)/step); |
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138 | } |
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139 | |
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140 | return nmemb; |
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141 | } |
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142 | |
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143 | void |
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144 | Array1DUniform::__fillBuffer() |
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145 | { |
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146 | size_t bufSize = 0; |
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147 | |
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148 | if (_step == 0) { |
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149 | return; |
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150 | } |
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151 | |
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152 | bufSize = __calcNmembFromStep(_step); |
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153 | _val.set(bufSize); |
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154 | |
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155 | for(double i=_min; i <= _max; i=i+_step) { |
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156 | _val.append(&i,1); |
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157 | } |
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158 | |
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159 | return; |
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160 | } |
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161 | |
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162 | // -------------------------------------------------------------------- // |
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163 | |
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