1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * ---------------------------------------------------------------------- |
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4 | * Nanovis: Visualization of Nanoelectronics Data |
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5 | * |
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6 | * ====================================================================== |
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7 | * AUTHOR: Wei Qiao <qiaow@purdue.edu> |
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8 | * Michael McLennan <mmclennan@purdue.edu> |
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9 | * Purdue Rendering and Perceptualization Lab (PURPL) |
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10 | * |
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11 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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12 | * |
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13 | * See the file "license.terms" for information on usage and |
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14 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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15 | * ====================================================================== |
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16 | */ |
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17 | |
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18 | #include <sys/time.h> |
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19 | #include <cassert> |
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20 | #include <cstdio> |
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21 | |
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22 | #include <GL/glew.h> |
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23 | #include <GL/glut.h> |
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24 | |
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25 | #include <graphics/RenderContext.h> |
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26 | #include <vrmath/Vector3f.h> |
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27 | |
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28 | #include <util/FilePath.h> |
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29 | #include <util/Fonts.h> |
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30 | |
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31 | #include <BMPImageLoaderImpl.h> |
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32 | #include <ImageLoaderFactory.h> |
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33 | |
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34 | #include "config.h" |
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35 | #include "nanovis.h" |
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36 | #include "nanovisServer.h" |
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37 | #include "define.h" |
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38 | |
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39 | #include "Flow.h" |
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40 | #include "Grid.h" |
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41 | #include "HeightMap.h" |
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42 | #include "Camera.h" |
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43 | #include "LIC.h" |
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44 | #include "NvShader.h" |
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45 | #include "OrientationIndicator.h" |
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46 | #include "PlaneRenderer.h" |
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47 | #include "PPMWriter.h" |
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48 | #include "Texture2D.h" |
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49 | #include "Trace.h" |
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50 | #include "TransferFunction.h" |
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51 | #include "Unirect.h" |
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52 | #include "VelocityArrowsSlice.h" |
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53 | #include "Volume.h" |
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54 | #include "VolumeInterpolator.h" |
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55 | #include "VolumeRenderer.h" |
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56 | |
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57 | using namespace nv; |
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58 | using namespace nv::graphics; |
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59 | using namespace nv::util; |
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60 | using namespace vrmath; |
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61 | |
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62 | // STATIC MEMBER DATA |
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63 | |
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64 | Tcl_Interp *NanoVis::interp = NULL; |
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65 | |
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66 | unsigned int NanoVis::flags = 0; |
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67 | bool NanoVis::debugFlag = false; |
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68 | |
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69 | int NanoVis::winWidth = NPIX; |
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70 | int NanoVis::winHeight = NPIX; |
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71 | int NanoVis::renderWindow = 0; |
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72 | unsigned char *NanoVis::screenBuffer = NULL; |
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73 | Texture2D *NanoVis::legendTexture = NULL; |
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74 | Fonts *NanoVis::fonts; |
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75 | int NanoVis::updir = Y_POS; |
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76 | Camera *NanoVis::cam = NULL; |
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77 | RenderContext *NanoVis::renderContext = NULL; |
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78 | |
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79 | NanoVis::TransferFunctionHashmap NanoVis::tfTable; |
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80 | NanoVis::VolumeHashmap NanoVis::volumeTable; |
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81 | NanoVis::FlowHashmap NanoVis::flowTable; |
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82 | NanoVis::HeightMapHashmap NanoVis::heightMapTable; |
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83 | |
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84 | double NanoVis::magMin = DBL_MAX; |
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85 | double NanoVis::magMax = -DBL_MAX; |
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86 | float NanoVis::xMin = FLT_MAX; |
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87 | float NanoVis::xMax = -FLT_MAX; |
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88 | float NanoVis::yMin = FLT_MAX; |
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89 | float NanoVis::yMax = -FLT_MAX; |
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90 | float NanoVis::zMin = FLT_MAX; |
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91 | float NanoVis::zMax = -FLT_MAX; |
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92 | float NanoVis::wMin = FLT_MAX; |
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93 | float NanoVis::wMax = -FLT_MAX; |
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94 | Vector3f NanoVis::sceneMin, NanoVis::sceneMax; |
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95 | |
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96 | VolumeRenderer *NanoVis::volRenderer = NULL; |
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97 | VelocityArrowsSlice *NanoVis::velocityArrowsSlice = NULL; |
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98 | LIC *NanoVis::licRenderer = NULL; |
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99 | PlaneRenderer *NanoVis::planeRenderer = NULL; |
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100 | OrientationIndicator *NanoVis::orientationIndicator = NULL; |
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101 | Grid *NanoVis::grid = NULL; |
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102 | |
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103 | // Image based flow visualization slice location |
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104 | // FLOW |
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105 | float NanoVis::_licSlice = 0.5f; |
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106 | int NanoVis::_licAxis = 2; // z axis |
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107 | |
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108 | //frame buffer for final rendering |
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109 | GLuint NanoVis::_finalFbo = 0; |
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110 | GLuint NanoVis::_finalColorTex = 0; |
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111 | GLuint NanoVis::_finalDepthRb = 0; |
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112 | |
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113 | // Default camera location. |
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114 | float def_eye_x = 0.0f; |
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115 | float def_eye_y = 0.0f; |
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116 | float def_eye_z = 2.5f; |
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117 | |
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118 | void |
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119 | NanoVis::removeAllData() |
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120 | { |
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121 | TRACE("Enter"); |
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122 | if (grid != NULL) { |
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123 | TRACE("Deleting grid"); |
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124 | delete grid; |
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125 | } |
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126 | if (cam != NULL) { |
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127 | TRACE("Deleting cam"); |
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128 | delete cam; |
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129 | } |
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130 | if (volRenderer != NULL) { |
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131 | TRACE("Deleting volRenderer"); |
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132 | delete volRenderer; |
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133 | } |
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134 | if (planeRenderer != NULL) { |
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135 | TRACE("Deleting planeRenderer"); |
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136 | delete planeRenderer; |
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137 | } |
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138 | if (legendTexture != NULL) { |
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139 | TRACE("Deleting legendTexture"); |
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140 | delete legendTexture; |
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141 | } |
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142 | TRACE("Deleting flows"); |
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143 | deleteFlows(interp); |
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144 | if (licRenderer != NULL) { |
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145 | TRACE("Deleting licRenderer"); |
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146 | delete licRenderer; |
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147 | } |
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148 | if (velocityArrowsSlice != NULL) { |
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149 | TRACE("Deleting velocityArrowsSlice"); |
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150 | delete velocityArrowsSlice; |
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151 | } |
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152 | if (renderContext != NULL) { |
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153 | TRACE("Deleting renderContext"); |
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154 | delete renderContext; |
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155 | } |
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156 | if (screenBuffer != NULL) { |
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157 | TRACE("Deleting screenBuffer"); |
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158 | delete [] screenBuffer; |
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159 | screenBuffer = NULL; |
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160 | } |
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161 | if (fonts != NULL) { |
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162 | TRACE("Deleting fonts"); |
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163 | delete fonts; |
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164 | } |
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165 | TRACE("Leave"); |
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166 | } |
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167 | |
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168 | void |
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169 | NanoVis::eventuallyRedraw(unsigned int flag) |
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170 | { |
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171 | if (flag) { |
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172 | flags |= flag; |
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173 | } |
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174 | if ((flags & REDRAW_PENDING) == 0) { |
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175 | glutPostRedisplay(); |
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176 | flags |= REDRAW_PENDING; |
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177 | } |
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178 | } |
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179 | |
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180 | void |
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181 | NanoVis::pan(float dx, float dy) |
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182 | { |
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183 | /* Move the camera and its target by equal amounts along the x and y |
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184 | * axes. */ |
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185 | TRACE("pan: x=%f, y=%f", dx, dy); |
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186 | |
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187 | cam->x(def_eye_x - dx); |
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188 | cam->y(def_eye_y + dy); |
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189 | TRACE("set eye to %f %f", cam->x(), cam->y()); |
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190 | } |
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191 | |
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192 | void |
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193 | NanoVis::zoom(float z) |
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194 | { |
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195 | /* Move the camera and its target by equal amounts along the x and y |
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196 | * axes. */ |
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197 | TRACE("zoom: z=%f", z); |
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198 | |
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199 | cam->z(def_eye_z / z); |
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200 | |
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201 | collectBounds(); |
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202 | cam->resetClippingRange(sceneMin, sceneMax); |
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203 | |
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204 | TRACE("set cam z to %f", cam->z()); |
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205 | } |
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206 | |
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207 | void |
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208 | NanoVis::resetCamera(bool resetOrientation) |
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209 | { |
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210 | TRACE("Resetting all=%d", resetOrientation ? 1 : 0); |
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211 | |
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212 | collectBounds(); |
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213 | cam->reset(sceneMin, sceneMax, resetOrientation); |
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214 | |
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215 | def_eye_x = cam->x(); |
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216 | def_eye_y = cam->y(); |
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217 | def_eye_z = cam->z(); |
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218 | } |
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219 | |
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220 | /** \brief Load a 3D volume |
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221 | * |
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222 | * \param name Volume ID |
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223 | * \param width Number of samples in X direction |
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224 | * \param height Number of samples in Y direction |
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225 | * \param depth Number of samples in Z direction |
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226 | * \param numComponents the number of scalars for each space point. All component |
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227 | * scalars for a point are placed consequtively in data array |
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228 | * width, height and depth: number of points in each dimension |
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229 | * \param data Array of floats |
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230 | * \param vmin Min value of field |
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231 | * \param vmax Max value of field |
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232 | * \param nonZeroMin Minimum non-zero value of field |
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233 | * \param data pointer to an array of floats. |
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234 | */ |
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235 | Volume * |
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236 | NanoVis::loadVolume(const char *name, int width, int height, int depth, |
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237 | int numComponents, float *data, double vmin, double vmax, |
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238 | double nonZeroMin) |
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239 | { |
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240 | VolumeHashmap::iterator itr = volumeTable.find(name); |
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241 | if (itr != volumeTable.end()) { |
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242 | WARN("volume \"%s\" already exists", name); |
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243 | removeVolume(itr->second); |
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244 | } |
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245 | |
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246 | Volume *volume = new Volume(0.f, 0.f, 0.f, |
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247 | width, height, depth, |
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248 | numComponents, |
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249 | data, vmin, vmax, nonZeroMin); |
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250 | Volume::updatePending = true; |
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251 | volume->name(name); |
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252 | volumeTable[name] = volume; |
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253 | |
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254 | return volume; |
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255 | } |
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256 | |
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257 | // Gets a colormap 1D texture by name. |
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258 | TransferFunction * |
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259 | NanoVis::getTransferFunction(const TransferFunctionId& id) |
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260 | { |
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261 | TransferFunctionHashmap::iterator itr = tfTable.find(id); |
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262 | if (itr == tfTable.end()) { |
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263 | TRACE("No transfer function named \"%s\" found", id.c_str()); |
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264 | return NULL; |
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265 | } else { |
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266 | return itr->second; |
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267 | } |
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268 | } |
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269 | |
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270 | // Creates of updates a colormap 1D texture by name. |
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271 | TransferFunction * |
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272 | NanoVis::defineTransferFunction(const TransferFunctionId& id, |
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273 | size_t n, float *data) |
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274 | { |
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275 | TransferFunction *tf = getTransferFunction(id); |
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276 | if (tf == NULL) { |
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277 | TRACE("Creating new transfer function \"%s\"", id.c_str()); |
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278 | tf = new TransferFunction(id.c_str(), n, data); |
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279 | tfTable[id] = tf; |
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280 | } else { |
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281 | TRACE("Updating existing transfer function \"%s\"", id.c_str()); |
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282 | tf->update(n, data); |
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283 | } |
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284 | return tf; |
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285 | } |
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286 | |
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287 | int |
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288 | NanoVis::renderLegend(TransferFunction *tf, double min, double max, |
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289 | int width, int height, const char *volArg) |
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290 | { |
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291 | TRACE("Enter"); |
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292 | |
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293 | int old_width = winWidth; |
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294 | int old_height = winHeight; |
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295 | |
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296 | planeRenderer->setScreenSize(width, height); |
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297 | resizeOffscreenBuffer(width, height); |
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298 | |
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299 | // generate data for the legend |
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300 | float data[512]; |
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301 | for (int i=0; i < 256; i++) { |
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302 | data[i] = data[i+256] = (float)(i/255.0); |
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303 | } |
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304 | legendTexture = new Texture2D(256, 2, GL_FLOAT, GL_LINEAR, 1, data); |
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305 | int index = planeRenderer->addPlane(legendTexture, tf); |
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306 | planeRenderer->setActivePlane(index); |
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307 | |
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308 | bindOffscreenBuffer(); |
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309 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //clear screen |
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310 | planeRenderer->render(); |
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311 | |
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312 | glPixelStorei(GL_PACK_ALIGNMENT, 1); |
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313 | glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, screenBuffer); |
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314 | { |
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315 | char prefix[200]; |
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316 | |
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317 | TRACE("Sending ppm legend image %s min:%g max:%g", volArg, min, max); |
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318 | sprintf(prefix, "nv>legend %s %g %g", volArg, min, max); |
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319 | #ifdef USE_THREADS |
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320 | queuePPM(g_queue, prefix, screenBuffer, width, height); |
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321 | #else |
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322 | writePPM(g_fdOut, prefix, screenBuffer, width, height); |
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323 | #endif |
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324 | } |
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325 | planeRenderer->removePlane(index); |
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326 | resizeOffscreenBuffer(old_width, old_height); |
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327 | |
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328 | delete legendTexture; |
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329 | legendTexture = NULL; |
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330 | TRACE("Leave"); |
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331 | return TCL_OK; |
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332 | } |
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333 | |
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334 | //initialize frame buffer objects for offscreen rendering |
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335 | bool |
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336 | NanoVis::initOffscreenBuffer() |
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337 | { |
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338 | TRACE("Enter"); |
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339 | assert(_finalFbo == 0); |
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340 | // Initialize a fbo for final display. |
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341 | glGenFramebuffersEXT(1, &_finalFbo); |
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342 | |
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343 | glGenTextures(1, &_finalColorTex); |
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344 | glBindTexture(GL_TEXTURE_2D, _finalColorTex); |
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345 | |
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346 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
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347 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
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348 | glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
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349 | |
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350 | #if defined(HAVE_FLOAT_TEXTURES) && defined(USE_HALF_FLOAT) |
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351 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, winWidth, winHeight, 0, |
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352 | GL_RGB, GL_INT, NULL); |
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353 | #elif defined(HAVE_FLOAT_TEXTURES) |
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354 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, winWidth, winHeight, 0, |
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355 | GL_RGB, GL_INT, NULL); |
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356 | #else |
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357 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, winWidth, winHeight, 0, |
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358 | GL_RGB, GL_INT, NULL); |
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359 | #endif |
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360 | |
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361 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _finalFbo); |
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362 | glGenRenderbuffersEXT(1, &_finalDepthRb); |
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363 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, _finalDepthRb); |
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364 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, |
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365 | winWidth, winHeight); |
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366 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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367 | GL_TEXTURE_2D, _finalColorTex, 0); |
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368 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, |
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369 | GL_RENDERBUFFER_EXT, _finalDepthRb); |
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370 | |
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371 | GLenum status; |
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372 | if (!CheckFBO(&status)) { |
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373 | PrintFBOStatus(status, "finalFbo"); |
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374 | return false; |
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375 | } |
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376 | |
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377 | TRACE("Leave"); |
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378 | return true; |
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379 | } |
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380 | |
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381 | //resize the offscreen buffer |
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382 | bool |
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383 | NanoVis::resizeOffscreenBuffer(int w, int h) |
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384 | { |
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385 | TRACE("Enter (%d, %d)", w, h); |
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386 | if ((w == winWidth) && (h == winHeight)) { |
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387 | return true; |
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388 | } |
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389 | winWidth = w; |
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390 | winHeight = h; |
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391 | |
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392 | if (fonts) { |
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393 | fonts->resize(w, h); |
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394 | } |
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395 | TRACE("screenBuffer size: %d %d", w, h); |
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396 | |
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397 | if (screenBuffer != NULL) { |
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398 | delete [] screenBuffer; |
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399 | screenBuffer = NULL; |
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400 | } |
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401 | |
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402 | screenBuffer = new unsigned char[3*winWidth*winHeight]; |
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403 | assert(screenBuffer != NULL); |
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404 | |
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405 | //delete the current render buffer resources |
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406 | glDeleteTextures(1, &_finalColorTex); |
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407 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, _finalDepthRb); |
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408 | glDeleteRenderbuffersEXT(1, &_finalDepthRb); |
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409 | |
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410 | TRACE("before deleteframebuffers"); |
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411 | glDeleteFramebuffersEXT(1, &_finalFbo); |
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412 | |
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413 | TRACE("reinitialize FBO"); |
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414 | //Reinitialize final fbo for final display |
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415 | glGenFramebuffersEXT(1, &_finalFbo); |
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416 | |
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417 | glGenTextures(1, &_finalColorTex); |
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418 | glBindTexture(GL_TEXTURE_2D, _finalColorTex); |
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419 | |
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420 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
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421 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
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422 | glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
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423 | |
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424 | #if defined(HAVE_FLOAT_TEXTURES) && defined(USE_HALF_FLOAT) |
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425 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, winWidth, winHeight, 0, |
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426 | GL_RGB, GL_INT, NULL); |
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427 | #elif defined(HAVE_FLOAT_TEXTURES) |
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428 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, winWidth, winHeight, 0, |
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429 | GL_RGB, GL_INT, NULL); |
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430 | #else |
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431 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, winWidth, winHeight, 0, |
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432 | GL_RGB, GL_INT, NULL); |
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433 | #endif |
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434 | |
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435 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _finalFbo); |
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436 | glGenRenderbuffersEXT(1, &_finalDepthRb); |
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437 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, _finalDepthRb); |
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438 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, |
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439 | winWidth, winHeight); |
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440 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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441 | GL_TEXTURE_2D, _finalColorTex, 0); |
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442 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, |
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443 | GL_RENDERBUFFER_EXT, _finalDepthRb); |
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444 | |
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445 | GLenum status; |
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446 | if (!CheckFBO(&status)) { |
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447 | PrintFBOStatus(status, "finalFbo"); |
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448 | return false; |
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449 | } |
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450 | |
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451 | TRACE("change camera"); |
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452 | //change the camera setting |
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453 | cam->setScreenSize(0, 0, winWidth, winHeight); |
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454 | planeRenderer->setScreenSize(winWidth, winHeight); |
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455 | |
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456 | TRACE("Leave (%d, %d)", w, h); |
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457 | return true; |
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458 | } |
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459 | |
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460 | static |
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461 | void cgErrorCallback(void) |
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462 | { |
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463 | if (!NvShader::printErrorInfo()) { |
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464 | TRACE("Cg error, exiting..."); |
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465 | exit(1); |
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466 | } |
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467 | } |
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468 | |
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469 | bool NanoVis::init(const char* path) |
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470 | { |
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471 | // print OpenGL driver information |
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472 | TRACE("-----------------------------------------------------------"); |
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473 | TRACE("OpenGL version: %s", glGetString(GL_VERSION)); |
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474 | TRACE("OpenGL vendor: %s", glGetString(GL_VENDOR)); |
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475 | TRACE("OpenGL renderer: %s", glGetString(GL_RENDERER)); |
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476 | TRACE("-----------------------------------------------------------"); |
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477 | |
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478 | if (path == NULL) { |
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479 | ERROR("No path defined for shaders or resources"); |
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480 | return false; |
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481 | } |
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482 | GLenum err = glewInit(); |
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483 | if (GLEW_OK != err) { |
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484 | ERROR("Can't init GLEW: %s", glewGetErrorString(err)); |
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485 | return false; |
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486 | } |
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487 | TRACE("Using GLEW %s", glewGetString(GLEW_VERSION)); |
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488 | |
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489 | // OpenGL 2.1 includes VBOs, PBOs, MRT, NPOT textures, point parameters, point sprites, |
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490 | // GLSL 1.2, and occlusion queries. |
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491 | if (!GLEW_VERSION_2_1) { |
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492 | ERROR("OpenGL version 2.1 or greater is required"); |
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493 | return false; |
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494 | } |
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495 | |
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496 | // NVIDIA driver may report OpenGL 2.1, but not support PBOs in |
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497 | // indirect GLX contexts |
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498 | if (!GLEW_ARB_pixel_buffer_object) { |
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499 | ERROR("Pixel buffer objects are not supported by driver, please check that the user running nanovis has permissions to create a direct rendering context (e.g. user has read/write access to /dev/nvidia* device nodes in Linux)."); |
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500 | return false; |
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501 | } |
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502 | |
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503 | // Additional extensions not in 2.1 core |
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504 | |
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505 | // Framebuffer objects were promoted in 3.0 |
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506 | if (!GLEW_EXT_framebuffer_object) { |
---|
507 | ERROR("EXT_framebuffer_oject extension is required"); |
---|
508 | return false; |
---|
509 | } |
---|
510 | // Rectangle textures were promoted in 3.1 |
---|
511 | // FIXME: can use NPOT in place of rectangle textures |
---|
512 | if (!GLEW_ARB_texture_rectangle) { |
---|
513 | ERROR("ARB_texture_rectangle extension is required"); |
---|
514 | return false; |
---|
515 | } |
---|
516 | #ifdef HAVE_FLOAT_TEXTURES |
---|
517 | // Float color buffers and textures were promoted in 3.0 |
---|
518 | if (!GLEW_ARB_texture_float || |
---|
519 | !GLEW_ARB_color_buffer_float) { |
---|
520 | ERROR("ARB_texture_float and ARB_color_buffer_float extensions are required"); |
---|
521 | return false; |
---|
522 | } |
---|
523 | #endif |
---|
524 | // FIXME: should use ARB programs or (preferably) a GLSL profile for portability |
---|
525 | if (!GLEW_NV_vertex_program3 || |
---|
526 | !GLEW_NV_fragment_program2) { |
---|
527 | ERROR("NV_vertex_program3 and NV_fragment_program2 extensions are required"); |
---|
528 | return false; |
---|
529 | } |
---|
530 | |
---|
531 | if (!FilePath::getInstance()->setPath(path)) { |
---|
532 | ERROR("can't set file path to %s", path); |
---|
533 | return false; |
---|
534 | } |
---|
535 | |
---|
536 | ImageLoaderFactory::getInstance()->addLoaderImpl("bmp", new BMPImageLoaderImpl()); |
---|
537 | |
---|
538 | NvShader::initCg(); |
---|
539 | NvShader::setErrorCallback(cgErrorCallback); |
---|
540 | |
---|
541 | fonts = new Fonts(); |
---|
542 | fonts->addFont("verdana", "verdana.fnt"); |
---|
543 | fonts->setFont("verdana"); |
---|
544 | |
---|
545 | velocityArrowsSlice = new VelocityArrowsSlice; |
---|
546 | licRenderer = new LIC(NMESH, NPIX, NPIX, _licAxis, _licSlice); |
---|
547 | |
---|
548 | grid = new Grid(); |
---|
549 | grid->setFont(fonts); |
---|
550 | return true; |
---|
551 | } |
---|
552 | |
---|
553 | bool |
---|
554 | NanoVis::initGL() |
---|
555 | { |
---|
556 | TRACE("in initGL"); |
---|
557 | //buffer to store data read from the screen |
---|
558 | if (screenBuffer) { |
---|
559 | delete[] screenBuffer; |
---|
560 | screenBuffer = NULL; |
---|
561 | } |
---|
562 | screenBuffer = new unsigned char[3*winWidth*winHeight]; |
---|
563 | assert(screenBuffer != NULL); |
---|
564 | |
---|
565 | //create the camera with default setting |
---|
566 | cam = new Camera(0, 0, winWidth, winHeight, |
---|
567 | def_eye_x, def_eye_y, def_eye_z); |
---|
568 | |
---|
569 | glEnable(GL_TEXTURE_2D); |
---|
570 | glShadeModel(GL_FLAT); |
---|
571 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
572 | glClearColor(0, 0, 0, 1); |
---|
573 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
574 | |
---|
575 | //initialize lighting |
---|
576 | GLfloat mat_specular[] = {1.0, 1.0, 1.0, 1.0}; |
---|
577 | GLfloat mat_shininess[] = {30.0}; |
---|
578 | GLfloat white_light[] = {1.0, 1.0, 1.0, 1.0}; |
---|
579 | GLfloat green_light[] = {0.1, 0.5, 0.1, 1.0}; |
---|
580 | |
---|
581 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); |
---|
582 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); |
---|
583 | glLightfv(GL_LIGHT0, GL_DIFFUSE, white_light); |
---|
584 | glLightfv(GL_LIGHT0, GL_SPECULAR, white_light); |
---|
585 | glLightfv(GL_LIGHT1, GL_DIFFUSE, green_light); |
---|
586 | glLightfv(GL_LIGHT1, GL_SPECULAR, white_light); |
---|
587 | |
---|
588 | //frame buffer object for offscreen rendering |
---|
589 | if (!initOffscreenBuffer()) { |
---|
590 | return false; |
---|
591 | } |
---|
592 | |
---|
593 | volRenderer = new VolumeRenderer(); |
---|
594 | |
---|
595 | renderContext = new RenderContext(); |
---|
596 | |
---|
597 | planeRenderer = new PlaneRenderer(winWidth, winHeight); |
---|
598 | |
---|
599 | orientationIndicator = new OrientationIndicator(); |
---|
600 | |
---|
601 | //assert(glGetError()==0); |
---|
602 | |
---|
603 | TRACE("leaving initGL"); |
---|
604 | return true; |
---|
605 | } |
---|
606 | |
---|
607 | void NanoVis::update() |
---|
608 | { |
---|
609 | VolumeInterpolator *volInterp = volRenderer->getVolumeInterpolator(); |
---|
610 | if (volInterp->isStarted()) { |
---|
611 | struct timeval clock; |
---|
612 | gettimeofday(&clock, NULL); |
---|
613 | double elapsed_time; |
---|
614 | |
---|
615 | elapsed_time = clock.tv_sec + clock.tv_usec/1000000.0 - |
---|
616 | volInterp->getStartTime(); |
---|
617 | |
---|
618 | TRACE("%lf %lf", elapsed_time, |
---|
619 | volInterp->getInterval()); |
---|
620 | float fraction; |
---|
621 | float f; |
---|
622 | |
---|
623 | f = fmod((float) elapsed_time, (float)volInterp->getInterval()); |
---|
624 | if (f == 0.0) { |
---|
625 | fraction = 0.0f; |
---|
626 | } else { |
---|
627 | fraction = f / volInterp->getInterval(); |
---|
628 | } |
---|
629 | TRACE("fraction : %f", fraction); |
---|
630 | volInterp->update(fraction); |
---|
631 | } |
---|
632 | } |
---|
633 | |
---|
634 | void |
---|
635 | NanoVis::setVolumeRanges() |
---|
636 | { |
---|
637 | double xMin, xMax, yMin, yMax, zMin, zMax, wMin, wMax; |
---|
638 | |
---|
639 | TRACE("Enter"); |
---|
640 | xMin = yMin = zMin = wMin = DBL_MAX; |
---|
641 | xMax = yMax = zMax = wMax = -DBL_MAX; |
---|
642 | VolumeHashmap::iterator itr; |
---|
643 | for (itr = volumeTable.begin(); |
---|
644 | itr != volumeTable.end(); ++itr) { |
---|
645 | Volume *volume = itr->second; |
---|
646 | if (xMin > volume->xAxis.min()) { |
---|
647 | xMin = volume->xAxis.min(); |
---|
648 | } |
---|
649 | if (xMax < volume->xAxis.max()) { |
---|
650 | xMax = volume->xAxis.max(); |
---|
651 | } |
---|
652 | if (yMin > volume->yAxis.min()) { |
---|
653 | yMin = volume->yAxis.min(); |
---|
654 | } |
---|
655 | if (yMax < volume->yAxis.max()) { |
---|
656 | yMax = volume->yAxis.max(); |
---|
657 | } |
---|
658 | if (zMin > volume->zAxis.min()) { |
---|
659 | zMin = volume->zAxis.min(); |
---|
660 | } |
---|
661 | if (zMax < volume->zAxis.max()) { |
---|
662 | zMax = volume->zAxis.max(); |
---|
663 | } |
---|
664 | if (wMin > volume->wAxis.min()) { |
---|
665 | wMin = volume->wAxis.min(); |
---|
666 | } |
---|
667 | if (wMax < volume->wAxis.max()) { |
---|
668 | wMax = volume->wAxis.max(); |
---|
669 | } |
---|
670 | } |
---|
671 | if ((xMin < DBL_MAX) && (xMax > -DBL_MAX)) { |
---|
672 | grid->xAxis.setScale(xMin, xMax); |
---|
673 | } |
---|
674 | if ((yMin < DBL_MAX) && (yMax > -DBL_MAX)) { |
---|
675 | grid->yAxis.setScale(yMin, yMax); |
---|
676 | } |
---|
677 | if ((zMin < DBL_MAX) && (zMax > -DBL_MAX)) { |
---|
678 | grid->zAxis.setScale(zMin, zMax); |
---|
679 | } |
---|
680 | if ((wMin < DBL_MAX) && (wMax > -DBL_MAX)) { |
---|
681 | Volume::valueMin = wMin; |
---|
682 | Volume::valueMax = wMax; |
---|
683 | } |
---|
684 | Volume::updatePending = false; |
---|
685 | TRACE("Leave"); |
---|
686 | } |
---|
687 | |
---|
688 | void |
---|
689 | NanoVis::setHeightmapRanges() |
---|
690 | { |
---|
691 | double xMin, xMax, yMin, yMax, zMin, zMax, wMin, wMax; |
---|
692 | |
---|
693 | TRACE("Enter"); |
---|
694 | xMin = yMin = zMin = wMin = DBL_MAX; |
---|
695 | xMax = yMax = zMax = wMax = -DBL_MAX; |
---|
696 | HeightMapHashmap::iterator itr; |
---|
697 | for (itr = heightMapTable.begin(); |
---|
698 | itr != heightMapTable.end(); ++itr) { |
---|
699 | HeightMap *heightMap = itr->second; |
---|
700 | if (xMin > heightMap->xAxis.min()) { |
---|
701 | xMin = heightMap->xAxis.min(); |
---|
702 | } |
---|
703 | if (xMax < heightMap->xAxis.max()) { |
---|
704 | xMax = heightMap->xAxis.max(); |
---|
705 | } |
---|
706 | if (yMin > heightMap->yAxis.min()) { |
---|
707 | yMin = heightMap->yAxis.min(); |
---|
708 | } |
---|
709 | if (yMax < heightMap->yAxis.max()) { |
---|
710 | yMax = heightMap->yAxis.max(); |
---|
711 | } |
---|
712 | if (zMin > heightMap->zAxis.min()) { |
---|
713 | zMin = heightMap->zAxis.min(); |
---|
714 | } |
---|
715 | if (zMax < heightMap->zAxis.max()) { |
---|
716 | zMax = heightMap->zAxis.max(); |
---|
717 | } |
---|
718 | if (wMin > heightMap->wAxis.min()) { |
---|
719 | wMin = heightMap->wAxis.min(); |
---|
720 | } |
---|
721 | if (wMax < heightMap->wAxis.max()) { |
---|
722 | wMax = heightMap->wAxis.max(); |
---|
723 | } |
---|
724 | } |
---|
725 | if ((xMin < DBL_MAX) && (xMax > -DBL_MAX)) { |
---|
726 | grid->xAxis.setScale(xMin, xMax); |
---|
727 | } |
---|
728 | if ((yMin < DBL_MAX) && (yMax > -DBL_MAX)) { |
---|
729 | grid->yAxis.setScale(yMin, yMax); |
---|
730 | } |
---|
731 | if ((zMin < DBL_MAX) && (zMax > -DBL_MAX)) { |
---|
732 | grid->zAxis.setScale(zMin, zMax); |
---|
733 | } |
---|
734 | if ((wMin < DBL_MAX) && (wMax > -DBL_MAX)) { |
---|
735 | HeightMap::valueMin = grid->yAxis.min(); |
---|
736 | HeightMap::valueMax = grid->yAxis.max(); |
---|
737 | } |
---|
738 | for (HeightMapHashmap::iterator itr = heightMapTable.begin(); |
---|
739 | itr != heightMapTable.end(); ++itr) { |
---|
740 | itr->second->mapToGrid(grid); |
---|
741 | } |
---|
742 | HeightMap::updatePending = false; |
---|
743 | TRACE("Leave"); |
---|
744 | } |
---|
745 | |
---|
746 | void |
---|
747 | NanoVis::collectBounds(bool onlyVisible) |
---|
748 | { |
---|
749 | if (flags & MAP_FLOWS) { |
---|
750 | mapFlows(); |
---|
751 | grid->xAxis.setScale(xMin, xMax); |
---|
752 | grid->yAxis.setScale(yMin, yMax); |
---|
753 | grid->zAxis.setScale(zMin, zMax); |
---|
754 | } |
---|
755 | |
---|
756 | sceneMin.set(FLT_MAX, FLT_MAX, FLT_MAX); |
---|
757 | sceneMax.set(-FLT_MAX, -FLT_MAX, -FLT_MAX); |
---|
758 | |
---|
759 | for (VolumeHashmap::iterator itr = volumeTable.begin(); |
---|
760 | itr != volumeTable.end(); ++itr) { |
---|
761 | Volume *volume = itr->second; |
---|
762 | |
---|
763 | if (onlyVisible && !volume->visible()) |
---|
764 | continue; |
---|
765 | |
---|
766 | Vector3f bmin, bmax; |
---|
767 | volume->getWorldSpaceBounds(bmin, bmax); |
---|
768 | if (bmin.x > bmax.x) |
---|
769 | continue; |
---|
770 | |
---|
771 | if (sceneMin.x > bmin.x) { |
---|
772 | sceneMin.x = bmin.x; |
---|
773 | } |
---|
774 | if (sceneMax.x < bmax.x) { |
---|
775 | sceneMax.x = bmax.x; |
---|
776 | } |
---|
777 | if (sceneMin.y > bmin.y) { |
---|
778 | sceneMin.y = bmin.y; |
---|
779 | } |
---|
780 | if (sceneMax.y < bmax.y) { |
---|
781 | sceneMax.y = bmax.y; |
---|
782 | } |
---|
783 | if (sceneMin.z > bmin.z) { |
---|
784 | sceneMin.z = bmin.z; |
---|
785 | } |
---|
786 | if (sceneMax.z < bmax.z) { |
---|
787 | sceneMax.z = bmax.z; |
---|
788 | } |
---|
789 | } |
---|
790 | |
---|
791 | for (HeightMapHashmap::iterator itr = heightMapTable.begin(); |
---|
792 | itr != heightMapTable.end(); ++itr) { |
---|
793 | HeightMap *heightMap = itr->second; |
---|
794 | |
---|
795 | if (onlyVisible && !heightMap->isVisible()) |
---|
796 | continue; |
---|
797 | |
---|
798 | Vector3f bmin, bmax; |
---|
799 | heightMap->getWorldSpaceBounds(bmin, bmax); |
---|
800 | if (bmin.x > bmax.x) |
---|
801 | continue; |
---|
802 | |
---|
803 | if (sceneMin.x > bmin.x) { |
---|
804 | sceneMin.x = bmin.x; |
---|
805 | } |
---|
806 | if (sceneMax.x < bmax.x) { |
---|
807 | sceneMax.x = bmax.x; |
---|
808 | } |
---|
809 | if (sceneMin.y > bmin.y) { |
---|
810 | sceneMin.y = bmin.y; |
---|
811 | } |
---|
812 | if (sceneMax.y < bmax.y) { |
---|
813 | sceneMax.y = bmax.y; |
---|
814 | } |
---|
815 | if (sceneMin.z > bmin.z) { |
---|
816 | sceneMin.z = bmin.z; |
---|
817 | } |
---|
818 | if (sceneMax.z < bmax.z) { |
---|
819 | sceneMax.z = bmax.z; |
---|
820 | } |
---|
821 | } |
---|
822 | |
---|
823 | Vector3f flowMin, flowMax; |
---|
824 | getFlowBounds(flowMin, flowMax, onlyVisible); |
---|
825 | if (flowMin.x < flowMax.x) { |
---|
826 | if (sceneMin.x > flowMin.x) { |
---|
827 | sceneMin.x = flowMin.x; |
---|
828 | } |
---|
829 | if (sceneMax.x < flowMax.x) { |
---|
830 | sceneMax.x = flowMax.x; |
---|
831 | } |
---|
832 | if (sceneMin.y > flowMin.y) { |
---|
833 | sceneMin.y = flowMin.y; |
---|
834 | } |
---|
835 | if (sceneMax.y < flowMax.y) { |
---|
836 | sceneMax.y = flowMax.y; |
---|
837 | } |
---|
838 | if (sceneMin.z > flowMin.z) { |
---|
839 | sceneMin.z = flowMin.z; |
---|
840 | } |
---|
841 | if (sceneMax.z < flowMax.z) { |
---|
842 | sceneMax.z = flowMax.z; |
---|
843 | } |
---|
844 | } |
---|
845 | |
---|
846 | // TODO: Get Grid bounds |
---|
847 | |
---|
848 | if (sceneMin.x > sceneMax.x) { |
---|
849 | sceneMin.set(-0.5, -0.5, -0.5); |
---|
850 | sceneMax.set( 0.5, 0.5, 0.5); |
---|
851 | } |
---|
852 | |
---|
853 | TRACE("Scene bounds: (%g,%g,%g) - (%g,%g,%g)", |
---|
854 | sceneMin.x, sceneMin.y, sceneMin.z, |
---|
855 | sceneMax.x, sceneMax.y, sceneMax.z); |
---|
856 | } |
---|
857 | |
---|
858 | void |
---|
859 | NanoVis::setBgColor(float color[3]) |
---|
860 | { |
---|
861 | TRACE("Setting bgcolor to %g %g %g", color[0], color[1], color[2]); |
---|
862 | glClearColor(color[0], color[1], color[2], 1); |
---|
863 | } |
---|
864 | |
---|
865 | void |
---|
866 | NanoVis::removeVolume(Volume *volume) |
---|
867 | { |
---|
868 | VolumeHashmap::iterator itr = volumeTable.find(volume->name()); |
---|
869 | if (itr != volumeTable.end()) { |
---|
870 | volumeTable.erase(itr); |
---|
871 | } |
---|
872 | delete volume; |
---|
873 | } |
---|
874 | |
---|
875 | Flow * |
---|
876 | NanoVis::getFlow(const char *name) |
---|
877 | { |
---|
878 | FlowHashmap::iterator itr = flowTable.find(name); |
---|
879 | if (itr == flowTable.end()) { |
---|
880 | TRACE("Can't find flow '%s'", name); |
---|
881 | return NULL; |
---|
882 | } |
---|
883 | return itr->second; |
---|
884 | } |
---|
885 | |
---|
886 | Flow * |
---|
887 | NanoVis::createFlow(Tcl_Interp *interp, const char *name) |
---|
888 | { |
---|
889 | FlowHashmap::iterator itr = flowTable.find(name); |
---|
890 | if (itr != flowTable.end()) { |
---|
891 | ERROR("Flow '%s' already exists", name); |
---|
892 | return NULL; |
---|
893 | } |
---|
894 | Flow *flow = new Flow(interp, name); |
---|
895 | flowTable[name] = flow; |
---|
896 | return flow; |
---|
897 | } |
---|
898 | |
---|
899 | /** |
---|
900 | * \brief Delete flow object and hash table entry |
---|
901 | * |
---|
902 | * This is called by the flow command instance delete callback |
---|
903 | */ |
---|
904 | void |
---|
905 | NanoVis::deleteFlow(const char *name) |
---|
906 | { |
---|
907 | FlowHashmap::iterator itr = flowTable.find(name); |
---|
908 | if (itr != flowTable.end()) { |
---|
909 | delete itr->second; |
---|
910 | flowTable.erase(itr); |
---|
911 | } |
---|
912 | } |
---|
913 | |
---|
914 | /** |
---|
915 | * \brief Delete all flow object commands |
---|
916 | * |
---|
917 | * This will also delete the flow objects and hash table entries |
---|
918 | */ |
---|
919 | void |
---|
920 | NanoVis::deleteFlows(Tcl_Interp *interp) |
---|
921 | { |
---|
922 | FlowHashmap::iterator itr; |
---|
923 | for (itr = flowTable.begin(); |
---|
924 | itr != flowTable.end(); ++itr) { |
---|
925 | Tcl_DeleteCommandFromToken(interp, itr->second->getCommandToken()); |
---|
926 | } |
---|
927 | flowTable.clear(); |
---|
928 | } |
---|
929 | |
---|
930 | bool |
---|
931 | NanoVis::mapFlows() |
---|
932 | { |
---|
933 | TRACE("Enter"); |
---|
934 | |
---|
935 | flags &= ~MAP_FLOWS; |
---|
936 | |
---|
937 | /* |
---|
938 | * Step 1. Get the overall min and max magnitudes of all the |
---|
939 | * flow vectors. |
---|
940 | */ |
---|
941 | magMin = DBL_MAX, magMax = -DBL_MAX; |
---|
942 | |
---|
943 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
944 | itr != flowTable.end(); ++itr) { |
---|
945 | Flow *flow = itr->second; |
---|
946 | double min, max; |
---|
947 | if (!flow->isDataLoaded()) { |
---|
948 | continue; |
---|
949 | } |
---|
950 | Rappture::Unirect3d *data = flow->data(); |
---|
951 | min = data->magMin(); |
---|
952 | max = data->magMax(); |
---|
953 | if (min < magMin) { |
---|
954 | magMin = min; |
---|
955 | } |
---|
956 | if (max > magMax) { |
---|
957 | magMax = max; |
---|
958 | } |
---|
959 | if (data->xMin() < xMin) { |
---|
960 | xMin = data->xMin(); |
---|
961 | } |
---|
962 | if (data->yMin() < yMin) { |
---|
963 | yMin = data->yMin(); |
---|
964 | } |
---|
965 | if (data->zMin() < zMin) { |
---|
966 | zMin = data->zMin(); |
---|
967 | } |
---|
968 | if (data->xMax() > xMax) { |
---|
969 | xMax = data->xMax(); |
---|
970 | } |
---|
971 | if (data->yMax() > yMax) { |
---|
972 | yMax = data->yMax(); |
---|
973 | } |
---|
974 | if (data->zMax() > zMax) { |
---|
975 | zMax = data->zMax(); |
---|
976 | } |
---|
977 | } |
---|
978 | |
---|
979 | TRACE("magMin=%g magMax=%g", NanoVis::magMin, NanoVis::magMax); |
---|
980 | |
---|
981 | /* |
---|
982 | * Step 2. Generate the vector field from each data set. |
---|
983 | */ |
---|
984 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
985 | itr != flowTable.end(); ++itr) { |
---|
986 | Flow *flow = itr->second; |
---|
987 | if (!flow->isDataLoaded()) { |
---|
988 | continue; // Flow exists, but no data has been loaded yet. |
---|
989 | } |
---|
990 | if (flow->visible()) { |
---|
991 | flow->initializeParticles(); |
---|
992 | } |
---|
993 | if (!flow->scaleVectorField()) { |
---|
994 | return false; |
---|
995 | } |
---|
996 | // FIXME: This doesn't work when there is more than one flow. |
---|
997 | licRenderer->setOffset(flow->getRelativePosition()); |
---|
998 | velocityArrowsSlice->slicePos(flow->getRelativePosition()); |
---|
999 | } |
---|
1000 | advectFlows(); |
---|
1001 | return true; |
---|
1002 | } |
---|
1003 | |
---|
1004 | void |
---|
1005 | NanoVis::getFlowBounds(Vector3f& min, |
---|
1006 | Vector3f& max, |
---|
1007 | bool onlyVisible) |
---|
1008 | { |
---|
1009 | TRACE("Enter"); |
---|
1010 | |
---|
1011 | min.set(FLT_MAX, FLT_MAX, FLT_MAX); |
---|
1012 | max.set(-FLT_MAX, -FLT_MAX, -FLT_MAX); |
---|
1013 | |
---|
1014 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
1015 | itr != flowTable.end(); ++itr) { |
---|
1016 | itr->second->getBounds(min, max, onlyVisible); |
---|
1017 | } |
---|
1018 | } |
---|
1019 | |
---|
1020 | void |
---|
1021 | NanoVis::renderFlows() |
---|
1022 | { |
---|
1023 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
1024 | itr != flowTable.end(); ++itr) { |
---|
1025 | Flow *flow = itr->second; |
---|
1026 | if (flow->isDataLoaded() && flow->visible()) { |
---|
1027 | flow->render(); |
---|
1028 | } |
---|
1029 | } |
---|
1030 | flags &= ~REDRAW_PENDING; |
---|
1031 | } |
---|
1032 | |
---|
1033 | void |
---|
1034 | NanoVis::resetFlows() |
---|
1035 | { |
---|
1036 | if (licRenderer->active()) { |
---|
1037 | NanoVis::licRenderer->reset(); |
---|
1038 | } |
---|
1039 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
1040 | itr != flowTable.end(); ++itr) { |
---|
1041 | Flow *flow = itr->second; |
---|
1042 | if (flow->isDataLoaded() && flow->visible()) { |
---|
1043 | flow->resetParticles(); |
---|
1044 | } |
---|
1045 | } |
---|
1046 | } |
---|
1047 | |
---|
1048 | void |
---|
1049 | NanoVis::advectFlows() |
---|
1050 | { |
---|
1051 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
1052 | itr != flowTable.end(); ++itr) { |
---|
1053 | Flow *flow = itr->second; |
---|
1054 | if (flow->isDataLoaded() && flow->visible()) { |
---|
1055 | flow->advect(); |
---|
1056 | } |
---|
1057 | } |
---|
1058 | } |
---|
1059 | |
---|
1060 | void |
---|
1061 | NanoVis::render() |
---|
1062 | { |
---|
1063 | TRACE("Enter"); |
---|
1064 | |
---|
1065 | if (flags & MAP_FLOWS) { |
---|
1066 | #ifdef notdef |
---|
1067 | xMin = yMin = zMin = wMin = FLT_MAX, magMin = DBL_MAX; |
---|
1068 | xMax = yMax = zMax = wMax = -FLT_MAX, magMax = -DBL_MAX; |
---|
1069 | #endif |
---|
1070 | mapFlows(); |
---|
1071 | grid->xAxis.setScale(xMin, xMax); |
---|
1072 | grid->yAxis.setScale(yMin, yMax); |
---|
1073 | grid->zAxis.setScale(zMin, zMax); |
---|
1074 | } |
---|
1075 | //assert(glGetError()==0); |
---|
1076 | if (HeightMap::updatePending) { |
---|
1077 | setHeightmapRanges(); |
---|
1078 | } |
---|
1079 | if (Volume::updatePending) { |
---|
1080 | setVolumeRanges(); |
---|
1081 | } |
---|
1082 | |
---|
1083 | //start final rendering |
---|
1084 | |
---|
1085 | // Need to reset fbo since it may have been changed to default (0) |
---|
1086 | bindOffscreenBuffer(); |
---|
1087 | |
---|
1088 | //clear screen |
---|
1089 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
1090 | |
---|
1091 | glEnable(GL_DEPTH_TEST); |
---|
1092 | glEnable(GL_COLOR_MATERIAL); |
---|
1093 | |
---|
1094 | //camera setting activated |
---|
1095 | cam->initialize(); |
---|
1096 | |
---|
1097 | //set up the orientation of items in the scene. |
---|
1098 | glPushMatrix(); |
---|
1099 | |
---|
1100 | switch (updir) { |
---|
1101 | case X_POS: |
---|
1102 | glRotatef(90, 0, 0, 1); |
---|
1103 | glRotatef(90, 1, 0, 0); |
---|
1104 | break; |
---|
1105 | case Y_POS: |
---|
1106 | // this is the default |
---|
1107 | break; |
---|
1108 | case Z_POS: |
---|
1109 | glRotatef(-90, 1, 0, 0); |
---|
1110 | glRotatef(-90, 0, 0, 1); |
---|
1111 | break; |
---|
1112 | case X_NEG: |
---|
1113 | glRotatef(-90, 0, 0, 1); |
---|
1114 | break; |
---|
1115 | case Y_NEG: |
---|
1116 | glRotatef(180, 0, 0, 1); |
---|
1117 | glRotatef(-90, 0, 1, 0); |
---|
1118 | break; |
---|
1119 | case Z_NEG: |
---|
1120 | glRotatef(90, 1, 0, 0); |
---|
1121 | break; |
---|
1122 | } |
---|
1123 | |
---|
1124 | //now render things in the scene |
---|
1125 | |
---|
1126 | orientationIndicator->render(); |
---|
1127 | grid->render(); |
---|
1128 | if ((licRenderer != NULL) && (licRenderer->active())) { |
---|
1129 | licRenderer->render(); |
---|
1130 | } |
---|
1131 | if ((velocityArrowsSlice != NULL) && (velocityArrowsSlice->enabled())) { |
---|
1132 | velocityArrowsSlice->render(); |
---|
1133 | } |
---|
1134 | renderFlows(); |
---|
1135 | volRenderer->renderAll(); |
---|
1136 | |
---|
1137 | HeightMapHashmap::iterator itr; |
---|
1138 | for (itr = heightMapTable.begin(); |
---|
1139 | itr != heightMapTable.end(); ++itr) { |
---|
1140 | HeightMap *heightMap = itr->second; |
---|
1141 | if (heightMap->isVisible()) { |
---|
1142 | heightMap->render(renderContext); |
---|
1143 | } |
---|
1144 | } |
---|
1145 | glPopMatrix(); |
---|
1146 | |
---|
1147 | CHECK_FRAMEBUFFER_STATUS(); |
---|
1148 | TRACE("Leave"); |
---|
1149 | } |
---|