1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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4 | * |
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5 | * Authors: |
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6 | * Wei Qiao <qiaow@purdue.edu> |
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7 | * Insoo Woo <iwoo@purdue.edu> |
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8 | * George A. Howlett <gah@purdue.edu> |
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9 | * Leif Delgass <ldelgass@purdue.edu> |
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10 | */ |
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11 | |
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12 | #include <float.h> |
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13 | |
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14 | #include <tcl.h> |
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15 | |
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16 | #include <vrmath/BBox.h> |
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17 | #include <vrmath/Vector3f.h> |
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18 | |
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19 | #include "nanovis.h" |
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20 | #include "Flow.h" |
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21 | #include "FlowCmd.h" |
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22 | #include "FlowTypes.h" |
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23 | #include "FlowParticles.h" |
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24 | #include "FlowBox.h" |
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25 | #include "LIC.h" |
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26 | #include "VelocityArrowsSlice.h" |
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27 | #include "Switch.h" |
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28 | #include "Unirect.h" |
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29 | #include "Volume.h" |
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30 | #include "Trace.h" |
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31 | #include "TransferFunction.h" |
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32 | |
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33 | using namespace nv; |
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34 | using namespace vrmath; |
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35 | |
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36 | bool Flow::updatePending = false; |
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37 | double Flow::magMin = DBL_MAX; |
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38 | double Flow::magMax = -DBL_MAX; |
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39 | |
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40 | Flow::Flow(Tcl_Interp *interp, const char *name) : |
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41 | _interp(interp), |
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42 | _name(name), |
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43 | _volume(NULL) |
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44 | { |
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45 | memset(&_sv, 0, sizeof(FlowValues)); |
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46 | _sv.sliceVisible = 1; |
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47 | _sv.transferFunction = NanoVis::getTransferFunction("default"); |
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48 | |
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49 | _cmdToken = Tcl_CreateObjCommand(_interp, (char *)name, |
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50 | (Tcl_ObjCmdProc *)FlowInstObjCmd, |
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51 | this, FlowInstDeleteProc); |
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52 | } |
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53 | |
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54 | Flow::~Flow() |
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55 | { |
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56 | TRACE("Enter"); |
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57 | |
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58 | FreeSwitches(_switches, &_sv, 0); |
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59 | |
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60 | if (_volume != NULL) { |
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61 | NanoVis::removeVolume(_volume); |
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62 | _volume = NULL; |
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63 | } |
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64 | for (BoxHashmap::iterator itr = _boxTable.begin(); |
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65 | itr != _boxTable.end(); ++itr) { |
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66 | delete itr->second; |
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67 | } |
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68 | _boxTable.clear(); |
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69 | for (ParticlesHashmap::iterator itr = _particlesTable.begin(); |
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70 | itr != _particlesTable.end(); ++itr) { |
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71 | delete itr->second; |
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72 | } |
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73 | _particlesTable.clear(); |
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74 | } |
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75 | |
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76 | void |
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77 | Flow::getBounds(Vector3f& min, |
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78 | Vector3f& max, |
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79 | bool onlyVisible) |
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80 | { |
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81 | TRACE("Enter"); |
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82 | |
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83 | if (onlyVisible && !visible()) |
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84 | return; |
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85 | |
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86 | BBox allBounds; |
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87 | if (isDataLoaded()) { |
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88 | BBox bbox; |
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89 | _volume->getBounds(bbox.min, bbox.max); |
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90 | allBounds.extend(bbox); |
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91 | } |
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92 | for (BoxHashmap::iterator itr = _boxTable.begin(); |
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93 | itr != _boxTable.end(); ++itr) { |
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94 | FlowBox *box = itr->second; |
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95 | if (!onlyVisible || box->visible()) { |
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96 | BBox bbox; |
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97 | box->getBounds(bbox.min, bbox.max); |
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98 | allBounds.extend(bbox); |
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99 | } |
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100 | } |
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101 | min = allBounds.min; |
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102 | max = allBounds.max; |
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103 | } |
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104 | |
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105 | float |
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106 | Flow::getRelativePosition(FlowPosition *position) |
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107 | { |
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108 | if (position->flags == RELPOS) { |
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109 | return position->value; |
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110 | } |
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111 | switch (position->axis) { |
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112 | case AXIS_X: |
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113 | return (position->value - _volume->xAxis.min()) / |
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114 | (_volume->xAxis.max() - _volume->xAxis.min()); |
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115 | case AXIS_Y: |
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116 | return (position->value - _volume->yAxis.min()) / |
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117 | (_volume->yAxis.max() - _volume->yAxis.min()); |
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118 | case AXIS_Z: |
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119 | return (position->value - _volume->zAxis.min()) / |
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120 | (_volume->zAxis.max() - _volume->zAxis.min()); |
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121 | } |
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122 | return 0.0; |
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123 | } |
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124 | |
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125 | void |
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126 | Flow::resetParticles() |
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127 | { |
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128 | for (ParticlesHashmap::iterator itr = _particlesTable.begin(); |
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129 | itr != _particlesTable.end(); ++itr) { |
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130 | itr->second->reset(); |
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131 | } |
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132 | } |
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133 | |
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134 | void |
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135 | Flow::advect() |
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136 | { |
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137 | for (ParticlesHashmap::iterator itr = _particlesTable.begin(); |
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138 | itr != _particlesTable.end(); ++itr) { |
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139 | if (itr->second->visible()) { |
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140 | itr->second->advect(); |
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141 | } |
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142 | } |
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143 | } |
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144 | |
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145 | void |
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146 | Flow::render() |
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147 | { |
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148 | for (ParticlesHashmap::iterator itr = _particlesTable.begin(); |
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149 | itr != _particlesTable.end(); ++itr) { |
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150 | if (itr->second->visible()) { |
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151 | itr->second->render(); |
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152 | } |
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153 | } |
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154 | renderBoxes(); |
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155 | } |
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156 | |
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157 | FlowParticles * |
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158 | Flow::createParticles(const char *particlesName) |
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159 | { |
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160 | ParticlesHashmap::iterator itr = _particlesTable.find(particlesName); |
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161 | if (itr != _particlesTable.end()) { |
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162 | TRACE("Deleting existing particle injection plane '%s'", particlesName); |
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163 | delete itr->second; |
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164 | _particlesTable.erase(itr); |
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165 | } |
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166 | FlowParticles *particles = new FlowParticles(particlesName); |
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167 | _particlesTable[particlesName] = particles; |
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168 | return particles; |
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169 | } |
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170 | |
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171 | FlowParticles * |
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172 | Flow::getParticles(const char *particlesName) |
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173 | { |
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174 | ParticlesHashmap::iterator itr; |
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175 | itr = _particlesTable.find(particlesName); |
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176 | if (itr == _particlesTable.end()) { |
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177 | TRACE("Can't find particle injection plane '%s' in '%s'", particlesName, name()); |
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178 | return NULL; |
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179 | } |
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180 | return itr->second; |
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181 | } |
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182 | |
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183 | void |
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184 | Flow::deleteParticles(const char *particlesName) |
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185 | { |
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186 | ParticlesHashmap::iterator itr = _particlesTable.find(particlesName); |
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187 | if (itr == _particlesTable.end()) { |
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188 | TRACE("Can't find particle injection plane '%s' in '%s'", particlesName, name()); |
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189 | return; |
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190 | } |
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191 | delete itr->second; |
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192 | _particlesTable.erase(itr); |
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193 | } |
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194 | |
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195 | void |
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196 | Flow::getParticlesNames(std::vector<std::string>& names) |
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197 | { |
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198 | for (ParticlesHashmap::iterator itr = _particlesTable.begin(); |
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199 | itr != _particlesTable.end(); ++itr) { |
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200 | names.push_back(std::string(itr->second->name())); |
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201 | } |
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202 | } |
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203 | |
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204 | FlowBox * |
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205 | Flow::createBox(const char *boxName) |
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206 | { |
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207 | BoxHashmap::iterator itr = _boxTable.find(boxName); |
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208 | if (itr != _boxTable.end()) { |
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209 | TRACE("Deleting existing box '%s'", boxName); |
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210 | delete itr->second; |
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211 | _boxTable.erase(itr); |
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212 | } |
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213 | FlowBox *box = new FlowBox(boxName); |
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214 | _boxTable[boxName] = box; |
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215 | return box; |
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216 | } |
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217 | |
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218 | FlowBox * |
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219 | Flow::getBox(const char *boxName) |
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220 | { |
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221 | BoxHashmap::iterator itr = _boxTable.find(boxName); |
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222 | if (itr == _boxTable.end()) { |
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223 | TRACE("Can't find box '%s' in '%s'", boxName, name()); |
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224 | return NULL; |
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225 | } |
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226 | return itr->second; |
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227 | } |
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228 | |
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229 | void |
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230 | Flow::deleteBox(const char *boxName) |
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231 | { |
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232 | BoxHashmap::iterator itr = _boxTable.find(boxName); |
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233 | if (itr == _boxTable.end()) { |
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234 | TRACE("Can't find box '%s' in '%s'", boxName, name()); |
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235 | return; |
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236 | } |
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237 | delete itr->second; |
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238 | _boxTable.erase(itr); |
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239 | } |
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240 | |
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241 | void Flow::getBoxNames(std::vector<std::string>& names) |
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242 | { |
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243 | for (BoxHashmap::iterator itr = _boxTable.begin(); |
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244 | itr != _boxTable.end(); ++itr) { |
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245 | names.push_back(std::string(itr->second->name())); |
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246 | } |
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247 | } |
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248 | |
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249 | void |
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250 | Flow::initializeParticles() |
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251 | { |
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252 | for (ParticlesHashmap::iterator itr = _particlesTable.begin(); |
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253 | itr != _particlesTable.end(); ++itr) { |
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254 | itr->second->initialize(); |
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255 | } |
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256 | } |
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257 | |
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258 | bool |
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259 | Flow::configure() |
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260 | { |
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261 | bool needReset = false; |
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262 | |
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263 | if (_volume != NULL) { |
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264 | _volume->transferFunction(_sv.transferFunction); |
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265 | _volume->dataEnabled(_sv.showVolume); |
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266 | _volume->twoSidedLighting(_sv.twoSidedLighting); |
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267 | _volume->outline(_sv.showOutline); |
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268 | _volume->opacityScale(_sv.opacity); |
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269 | _volume->ambient(_sv.ambient); |
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270 | _volume->diffuse(_sv.diffuse); |
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271 | _volume->specularLevel(_sv.specular); |
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272 | _volume->specularExponent(_sv.specularExp); |
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273 | } |
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274 | |
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275 | float slicePos = getRelativePosition(&_sv.slicePos); |
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276 | |
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277 | // FIXME: LIC and arrows should be per-flow |
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278 | if (NanoVis::licRenderer != NULL) { |
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279 | if (NanoVis::licRenderer->getSliceAxis() != _sv.slicePos.axis) { |
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280 | needReset = true; |
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281 | NanoVis::licRenderer->setSliceAxis(_sv.slicePos.axis); |
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282 | } |
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283 | if (NanoVis::licRenderer->getSlicePosition() != slicePos) { |
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284 | needReset = true; |
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285 | NanoVis::licRenderer->setSlicePosition(slicePos); |
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286 | } |
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287 | NanoVis::licRenderer->visible(_sv.sliceVisible); |
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288 | } |
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289 | if (NanoVis::velocityArrowsSlice != NULL) { |
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290 | NanoVis::velocityArrowsSlice->setSliceAxis(_sv.slicePos.axis); |
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291 | NanoVis::velocityArrowsSlice->setSlicePosition(slicePos); |
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292 | NanoVis::velocityArrowsSlice->visible(_sv.showArrows); |
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293 | } |
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294 | |
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295 | return needReset; |
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296 | } |
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297 | |
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298 | bool |
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299 | Flow::scaleVectorField() |
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300 | { |
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301 | if (_volume == NULL) { |
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302 | ERROR("Called with NULL _volume"); |
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303 | return false; |
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304 | } |
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305 | |
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306 | // FIXME: LIC and arrows should be per-flow |
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307 | if (NanoVis::licRenderer != NULL) { |
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308 | NanoVis::licRenderer->setVectorField(_volume); |
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309 | NanoVis::licRenderer->setSliceAxis(_sv.slicePos.axis); |
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310 | NanoVis::licRenderer->setSlicePosition(getRelativePosition(&_sv.slicePos)); |
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311 | NanoVis::licRenderer->visible(_sv.sliceVisible); |
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312 | } |
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313 | if (NanoVis::velocityArrowsSlice != NULL) { |
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314 | NanoVis::velocityArrowsSlice->setVectorField(_volume); |
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315 | NanoVis::velocityArrowsSlice->setSliceAxis(_sv.slicePos.axis); |
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316 | NanoVis::velocityArrowsSlice->setSlicePosition(getRelativePosition(&_sv.slicePos)); |
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317 | NanoVis::velocityArrowsSlice->visible(_sv.showArrows); |
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318 | } |
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319 | for (ParticlesHashmap::iterator itr = _particlesTable.begin(); |
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320 | itr != _particlesTable.end(); ++itr) { |
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321 | itr->second->setVectorField(_volume); |
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322 | } |
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323 | return true; |
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324 | } |
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325 | |
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326 | void |
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327 | Flow::renderBoxes() |
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328 | { |
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329 | for (BoxHashmap::iterator itr = _boxTable.begin(); |
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330 | itr != _boxTable.end(); ++itr) { |
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331 | if (itr->second->visible()) { |
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332 | itr->second->render(_volume); |
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333 | } |
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334 | } |
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335 | } |
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336 | |
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337 | float * |
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338 | Flow::getScaledVector(Unirect3d *unirect) |
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339 | { |
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340 | assert(unirect->nComponents() == 3); |
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341 | size_t n = unirect->nValues() / unirect->nComponents() * 4; |
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342 | float *data = new float[n]; |
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343 | memset(data, 0, sizeof(float) * n); |
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344 | float *dest = data; |
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345 | const float *values = unirect->values(); |
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346 | for (size_t iz = 0; iz < unirect->zNum(); iz++) { |
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347 | for (size_t iy = 0; iy < unirect->yNum(); iy++) { |
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348 | for (size_t ix = 0; ix < unirect->xNum(); ix++) { |
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349 | double vx, vy, vz, vm; |
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350 | vx = values[0]; |
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351 | vy = values[1]; |
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352 | vz = values[2]; |
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353 | vm = sqrt(vx*vx + vy*vy + vz*vz); |
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354 | dest[0] = vm / unirect->magMax(); |
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355 | dest[1] = vx /(2.0 * unirect->magMax()) + 0.5; |
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356 | dest[2] = vy /(2.0 * unirect->magMax()) + 0.5; |
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357 | dest[3] = vz /(2.0 * unirect->magMax()) + 0.5; |
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358 | values += 3; |
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359 | dest += 4; |
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360 | } |
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361 | } |
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362 | } |
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363 | return data; |
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364 | } |
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365 | |
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366 | Volume * |
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367 | Flow::makeVolume(Unirect3d *unirect, float *data) |
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368 | { |
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369 | Volume *volume = |
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370 | NanoVis::loadVolume(_name.c_str(), |
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371 | unirect->xNum(), |
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372 | unirect->yNum(), |
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373 | unirect->zNum(), |
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374 | 4, data, |
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375 | unirect->magMin(), |
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376 | unirect->magMax(), |
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377 | 0); |
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378 | volume->xAxis.setRange(unirect->xMin(), unirect->xMax()); |
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379 | volume->yAxis.setRange(unirect->yMin(), unirect->yMax()); |
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380 | volume->zAxis.setRange(unirect->zMin(), unirect->zMax()); |
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381 | |
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382 | TRACE("mag=%g %g", unirect->magMin(), unirect->magMax()); |
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383 | |
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384 | return volume; |
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385 | } |
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386 | |
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387 | void |
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388 | Flow::initVolume() |
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389 | { |
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390 | _volume->disableCutplane(0); |
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391 | _volume->disableCutplane(1); |
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392 | _volume->disableCutplane(2); |
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393 | |
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394 | /* Initialize the volume with the previously configured values. */ |
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395 | _volume->transferFunction(_sv.transferFunction); |
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396 | _volume->dataEnabled(_sv.showVolume); |
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397 | _volume->twoSidedLighting(_sv.twoSidedLighting); |
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398 | _volume->outline(_sv.showOutline); |
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399 | _volume->opacityScale(_sv.opacity); |
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400 | _volume->ambient(_sv.ambient); |
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401 | _volume->diffuse(_sv.diffuse); |
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402 | _volume->specularLevel(_sv.specular); |
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403 | _volume->specularExponent(_sv.specularExp); |
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404 | |
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405 | Volume::updatePending = true; |
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406 | } |
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