1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | #include "nvconf.h" |
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3 | |
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4 | #include <GL/glew.h> |
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5 | #ifdef _WIN32 |
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6 | #include <windows.h> |
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7 | #endif |
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8 | #include <GL/gl.h> |
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9 | #ifdef WIN32 |
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10 | #include <GL/glaux.h> |
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11 | #else |
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12 | #ifdef HAVE_OPENCV_H |
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13 | #include <opencv/cv.h> |
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14 | #endif |
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15 | #ifdef HAVE_OPENCV_HIGHGUI_H |
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16 | #include <opencv/highgui.h> |
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17 | #endif |
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18 | #endif |
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19 | |
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20 | #include "VelocityArrowsSlice.h" |
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21 | |
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22 | #ifdef USE_NANOVIS_LIB |
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23 | #include "global.h" |
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24 | #include "R2/R2FilePath.h" |
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25 | #endif |
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26 | |
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27 | #define USE_VERTEX_BUFFER |
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28 | |
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29 | VelocityArrowsSlice::VelocityArrowsSlice() |
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30 | { |
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31 | _enabled = false; |
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32 | _context = cgCreateContext(); |
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33 | _vectorFieldGraphicsID = 0; |
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34 | _vfXscale = _vfYscale = _vfZscale = 0; |
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35 | _slicePos = 0.5f; |
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36 | _vertexBufferGraphicsID = 0; |
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37 | axis(2); |
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38 | //_renderMode = GLYPHS; |
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39 | _renderMode = LINES; |
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40 | |
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41 | _tickCountForMinSizeAxis = 10; |
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42 | |
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43 | _queryVelocityFP = |
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44 | #ifdef USE_NANOVIS_LIB |
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45 | LoadCgSourceProgram(_context, "queryvelocity.cg", CG_PROFILE_FP30, "main"); |
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46 | #else |
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47 | cgCreateProgramFromFile(_context, CG_SOURCE, "queryvelocity.cg", |
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48 | CG_PROFILE_FP30, "main", NULL); |
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49 | cgGLLoadProgram(_queryVelocityFP); |
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50 | #endif |
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51 | _qvVectorFieldParam = cgGetNamedParameter(_queryVelocityFP, "vfield"); |
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52 | |
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53 | _dirty = true; |
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54 | _dirtySamplingPosition = true; |
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55 | _dirtyRenderTarget = true; |
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56 | _maxVelocityScale.x = _maxVelocityScale.y = _maxVelocityScale.z = 1.0f; |
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57 | |
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58 | _renderTargetWidth = 128; |
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59 | _renderTargetHeight = 128; |
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60 | _velocities = new Vector3[_renderTargetWidth * _renderTargetHeight]; |
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61 | |
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62 | ::glGenBuffers(1, &_vertexBufferGraphicsID); |
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63 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _vertexBufferGraphicsID); |
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64 | glBufferDataARB(GL_ARRAY_BUFFER, _renderTargetWidth * _renderTargetHeight * 3 * sizeof(float), |
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65 | 0, GL_DYNAMIC_DRAW_ARB); |
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66 | glBindBufferARB(GL_ARRAY_BUFFER, 0); |
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67 | createRenderTarget(); |
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68 | _pointCount = 0; |
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69 | |
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70 | /* |
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71 | _particleVP = |
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72 | #ifdef USE_NANOVIS_LIB |
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73 | LoadCgSourceProgram(_context, "velocityslicevp.cg", CG_PROFILE_VP40, "vpmain"); |
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74 | #else |
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75 | cgCreateProgramFromFile(_context, CG_SOURCE, "velocityslicevp.cg", |
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76 | CG_PROFILE_VP40, "vpmain", NULL); |
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77 | cgGLLoadProgram(_particleVP); |
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78 | #endif |
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79 | _mvpParticleParam = cgGetNamedParameter(_particleVP, "mvp"); |
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80 | _mvParticleParam = cgGetNamedParameter(_particleVP, "modelview"); |
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81 | _mvTanHalfFOVParam = cgGetNamedParameter(_particleVP, "tanHalfFOV"); |
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82 | |
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83 | // TBD.. |
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84 | _particleFP = |
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85 | #ifdef USE_NANOVIS_LIB |
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86 | LoadCgSourceProgram(_context, "velocityslicefp.cg", CG_PROFILE_FP40, "fpmain"); |
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87 | #else |
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88 | cgCreateProgramFromFile(_context, CG_SOURCE, "velocityslicefp.cg", |
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89 | CG_PROFILE_FP40, "fpmain", NULL); |
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90 | cgGLLoadProgram(_particleFP); |
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91 | #endif |
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92 | _vectorParticleParam = cgGetNamedParameter(_particleVP, "vfield"); |
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93 | */ |
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94 | |
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95 | #ifdef USE_NANOVIS_LIB |
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96 | |
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97 | #ifdef WIN32 |
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98 | AUX_RGBImageRec *pTextureImage = auxDIBImageLoad("arrows.bmp"); |
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99 | _arrowsTex->setPixels(CF_RGB, DT_UBYTE, pTextureImage->sizeX, pTextureImage->sizeY, (void*) pTextureImage->data); |
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100 | |
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101 | _arrowsTex = new Texture2D(pTextureImage->sizeX, pTextureImage->sizeY, GL_FLOAT, GL_LINEAR, 3, (void*) pTextureImage->data); |
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102 | |
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103 | //delete pTextureImage; |
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104 | #else |
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105 | /* |
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106 | TRACE("test1\n"); |
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107 | const char *path = R2FilePath::getInstance()->getPath("arrows_flip2.png"); |
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108 | if (path) { |
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109 | TRACE("test2 %s\n", path); |
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110 | } else { |
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111 | TRACE("tt\n"); |
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112 | } |
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113 | IplImage* pTextureImage = cvLoadImage(path); |
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114 | TRACE("test3\n"); |
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115 | if (pTextureImage) { |
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116 | TRACE("file(%s) has been loaded\n", path); |
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117 | _arrowsTex = new Texture2D(pTextureImage->width, pTextureImage->height, GL_FLOAT, GL_LINEAR, 3, (float*) pTextureImage->imageData); |
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118 | TRACE("file(%s) has been loaded\n", path); |
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119 | //cvReleaseImage(&pTextureImage); |
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120 | } else { |
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121 | TRACE("not found\n"); |
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122 | } |
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123 | if (path) delete [] path; |
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124 | */ |
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125 | |
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126 | #endif |
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127 | |
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128 | #else |
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129 | _arrowsTex = new Texture2D(); |
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130 | _arrowsTex->setWrapS(TW_MIRROR); |
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131 | _arrowsTex->setWrapT(TW_MIRROR); |
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132 | #ifdef WIN32 |
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133 | AUX_RGBImageRec *pTextureImage = auxDIBImageLoad("arrows.bmp"); |
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134 | _arrowsTex->setPixels(CF_RGB, DT_UBYTE, pTextureImage->sizeX, pTextureImage->sizeY, (void*) pTextureImage->data); |
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135 | |
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136 | //delete pTextureImage; |
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137 | #else |
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138 | IplImage* pTextureImage = cvLoadImage("arrows_flip2.png"); |
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139 | _arrowsTex->setPixels(CF_RGB, DT_UBYTE, pTextureImage->width, pTextureImage->height, (void*) pTextureImage->imageData); |
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140 | |
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141 | //cvReleaseImage(&pTextureImage); |
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142 | #endif |
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143 | |
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144 | #endif |
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145 | _arrowColor.set(1, 1, 0); |
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146 | |
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147 | TRACE("test1\n"); |
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148 | } |
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149 | |
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150 | VelocityArrowsSlice::~VelocityArrowsSlice() |
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151 | { |
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152 | cgDestroyProgram(_queryVelocityFP); |
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153 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _fbo); |
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154 | glDeleteTextures(1, &_tex); |
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155 | glDeleteFramebuffersEXT(1, &_fbo); |
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156 | |
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157 | #ifdef USE_NANOVIS_LIB |
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158 | delete _arrowsTex; |
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159 | #else |
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160 | _arrowsTex->unref(); |
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161 | #endif |
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162 | cgDestroyProgram(_particleFP); |
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163 | cgDestroyProgram(_particleVP); |
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164 | |
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165 | glDeleteBuffers(1, &_vertexBufferGraphicsID); |
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166 | delete [] _velocities; |
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167 | } |
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168 | |
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169 | void VelocityArrowsSlice::createRenderTarget() |
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170 | { |
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171 | glGenFramebuffersEXT(1, &_fbo); |
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172 | glGenTextures(1, &_tex); |
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173 | |
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174 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _fbo); |
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175 | |
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176 | glViewport(0, 0, _renderTargetWidth, _renderTargetHeight); |
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177 | glMatrixMode(GL_PROJECTION); |
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178 | glLoadIdentity(); |
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179 | glOrtho(0, _renderTargetWidth, 0, _renderTargetHeight, -10.0f, 10.0f); |
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180 | glMatrixMode(GL_MODELVIEW); |
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181 | glLoadIdentity(); |
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182 | |
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183 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, _tex); |
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184 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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185 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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186 | glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
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187 | glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
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188 | |
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189 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_FLOAT_RGBA32_NV, |
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190 | _renderTargetWidth, _renderTargetHeight, 0, |
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191 | GL_RGBA, GL_FLOAT, NULL); |
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192 | |
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193 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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194 | GL_TEXTURE_RECTANGLE_NV, _tex, 0); |
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195 | |
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196 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
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197 | } |
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198 | |
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199 | void VelocityArrowsSlice::axis(int axis) |
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200 | { |
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201 | _axis = axis; |
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202 | switch (_axis) { |
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203 | case 0: |
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204 | _projectionVector.x = 0; |
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205 | _projectionVector.y = 1; |
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206 | _projectionVector.z = 1; |
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207 | break; |
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208 | case 1 : |
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209 | _projectionVector.x = 1; |
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210 | _projectionVector.y = 0; |
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211 | _projectionVector.z = 1; |
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212 | break; |
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213 | case 2: |
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214 | _projectionVector.x = 1; |
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215 | _projectionVector.y = 1; |
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216 | _projectionVector.z = 0; |
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217 | break; |
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218 | } |
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219 | _dirtySamplingPosition = true; |
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220 | _dirtyRenderTarget = true; |
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221 | //_dirty = true; |
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222 | } |
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223 | |
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224 | void VelocityArrowsSlice::queryVelocity() |
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225 | { |
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226 | if (!_enabled) return; |
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227 | |
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228 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _fbo); |
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229 | glDisable(GL_DEPTH_TEST); |
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230 | cgGLBindProgram(_queryVelocityFP); |
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231 | cgGLEnableProfile(CG_PROFILE_FP30); |
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232 | cgGLSetTextureParameter(_qvVectorFieldParam, _vectorFieldGraphicsID); |
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233 | cgGLEnableTextureParameter(_qvVectorFieldParam); |
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234 | |
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235 | glPushAttrib(GL_VIEWPORT_BIT); |
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236 | glViewport(0, 0, _renderTargetWidth, _renderTargetHeight); |
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237 | glMatrixMode(GL_PROJECTION); |
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238 | glPushMatrix(); |
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239 | glLoadIdentity(); |
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240 | glOrtho(0, _renderTargetWidth, 0, _renderTargetHeight, -10.0f, 10.0f); |
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241 | glMatrixMode(GL_MODELVIEW); |
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242 | glPushMatrix(); |
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243 | glLoadIdentity(); |
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244 | |
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245 | glBegin(GL_POINTS); |
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246 | |
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247 | for (unsigned int index = 0; index < _samplingPositions.size(); ++index) { |
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248 | glMultiTexCoord3f(0, _samplingPositions[index].x,_samplingPositions[index].y,_samplingPositions[index].z); |
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249 | glVertex2f(index % _renderTargetWidth, |
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250 | index / _renderTargetHeight); |
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251 | } |
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252 | |
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253 | glEnd(); |
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254 | |
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255 | glDisable(GL_TEXTURE_RECTANGLE_NV); |
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256 | cgGLDisableTextureParameter(_qvVectorFieldParam); |
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257 | cgGLDisableProfile(CG_PROFILE_FP30); |
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258 | |
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259 | glReadPixels(0, 0, _renderTargetWidth, _renderTargetHeight, GL_RGB, GL_FLOAT, _velocities); |
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260 | |
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261 | glMatrixMode(GL_PROJECTION); |
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262 | glPopMatrix(); |
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263 | glMatrixMode(GL_MODELVIEW); |
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264 | glPopMatrix(); |
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265 | glPopAttrib(); |
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266 | |
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267 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
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268 | } |
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269 | |
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270 | void VelocityArrowsSlice::render() |
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271 | { |
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272 | //if (!_enabled || (_vectorFieldGraphicsID == 0)) return; |
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273 | if (!_enabled) return; |
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274 | |
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275 | if (_dirty) { |
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276 | computeSamplingTicks(); |
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277 | queryVelocity(); |
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278 | _dirty = false; |
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279 | } |
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280 | |
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281 | glPushMatrix(); |
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282 | |
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283 | glScalef(_vfXscale,_vfYscale, _vfZscale); |
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284 | glTranslatef(-0.5f, -0.5f, -0.5f); |
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285 | if (_renderMode == LINES) { |
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286 | glDisable(GL_TEXTURE_2D); |
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287 | glLineWidth(2.0); |
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288 | glColor3f(_arrowColor.x, _arrowColor.y, _arrowColor.z); |
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289 | glBegin(GL_LINES); |
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290 | Vector3 pos; |
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291 | Vector3 pos2; |
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292 | Vector3 vel(1, 0, 0); |
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293 | Vector3 v, v2; |
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294 | if (_axis == 2) { |
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295 | int index = 0; |
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296 | for (int y = 1; y <= _tickCountY; ++y) { |
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297 | for (int x = 1; x <= _tickCountX; ++x, ++index) { |
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298 | pos = this->_samplingPositions[index]; |
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299 | pos2 = this->_velocities[index].scale(_projectionVector).scale(_maxVelocityScale) + pos; |
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300 | glVertex3f(pos.x, pos.y, pos.z); |
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301 | glVertex3f(pos2.x, pos2.y, pos2.z); |
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302 | /*v = pos - pos2; |
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303 | v2.x = 1; |
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304 | v2.y = 1; |
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305 | v2.z = (-(x1-x2)-(y1-y2))/(z1-z2) |
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306 | adj = v.length() / (4 * sqrt((x3^2)+(y3^2)+(z3^2))); |
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307 | x3 *= adj |
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308 | y3 *= adj |
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309 | z3 *= adj |
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310 | */ |
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311 | } |
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312 | } |
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313 | } else if (_axis == 1) { |
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314 | int index = 0; |
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315 | for (int z = 1; z <= _tickCountZ; ++z) { |
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316 | for (int x = 1; x <= _tickCountX; ++x, ++index) { |
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317 | pos = _samplingPositions[index]; |
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318 | pos2 = this->_velocities[index].scale(_projectionVector).scale(_maxVelocityScale) + pos; |
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319 | |
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320 | glVertex3f(pos.x, pos.y, pos.z); |
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321 | glVertex3f(pos2.x, pos2.y, pos2.z); |
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322 | } |
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323 | } |
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324 | } else if (_axis == 0) { |
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325 | int index = 0; |
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326 | for (int z = 1; z <= _tickCountZ; ++z) { |
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327 | for (int y = 1; y <= _tickCountY; ++y, ++index) { |
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328 | pos = _samplingPositions[index]; |
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329 | pos2 = this->_velocities[index].scale(_projectionVector).scale(_maxVelocityScale) + pos; |
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330 | |
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331 | glVertex3f(pos.x, pos.y, pos.z); |
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332 | glVertex3f(pos2.x, pos2.y, pos2.z); |
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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 | glEnd(); |
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338 | glLineWidth(1.0); |
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339 | } else { |
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340 | glColor3f(_arrowColor.x, _arrowColor.y, _arrowColor.z); |
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341 | glEnable(GL_BLEND); |
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342 | glBlendFunc(GL_SRC_ALPHA, GL_ONE); |
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343 | glEnable(GL_POINT_SPRITE_NV); |
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344 | glPointSize(20); |
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345 | glEnable(GL_VERTEX_PROGRAM_POINT_SIZE_NV); |
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346 | |
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347 | #ifdef USE_NANOVIS_LIB |
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348 | _arrowsTex->activate(); |
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349 | #else |
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350 | _arrowsTex->bind(0); |
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351 | glEnable(GL_TEXTURE_2D); |
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352 | #endif |
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353 | glPointParameterfARB( GL_POINT_FADE_THRESHOLD_SIZE_ARB, 0.0f ); |
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354 | |
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355 | glPointParameterfARB( GL_POINT_SIZE_MIN_ARB, 1.0f); |
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356 | glPointParameterfARB( GL_POINT_SIZE_MAX_ARB, 100.0f); |
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357 | glTexEnvf( GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE ); |
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358 | |
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359 | cgGLBindProgram(_particleVP); |
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360 | cgGLBindProgram(_particleFP); |
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361 | cgGLEnableProfile(CG_PROFILE_VP40); |
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362 | cgGLEnableProfile(CG_PROFILE_FP40); |
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363 | |
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364 | cgGLSetTextureParameter(_vectorParticleParam, _vectorFieldGraphicsID); |
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365 | cgGLEnableTextureParameter(_vectorParticleParam); |
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366 | |
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367 | |
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368 | //cgSetParameter1f(_mvTanHalfFOVParam, -tan(_fov * 0.5) * _screenHeight * 0.5); |
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369 | |
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370 | cgGLSetStateMatrixParameter(_mvpParticleParam, |
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371 | CG_GL_MODELVIEW_PROJECTION_MATRIX, |
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372 | CG_GL_MATRIX_IDENTITY); |
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373 | cgGLSetStateMatrixParameter(_mvParticleParam, |
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374 | CG_GL_MODELVIEW_MATRIX, |
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375 | CG_GL_MATRIX_IDENTITY); |
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376 | |
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377 | glEnableClientState(GL_VERTEX_ARRAY); |
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378 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _vertexBufferGraphicsID); |
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379 | glVertexPointer(3, GL_FLOAT, 0, 0); |
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380 | //glEnableClientState(GL_COLOR_ARRAY); |
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381 | |
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382 | // TBD.. |
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383 | glDrawArrays(GL_POINTS, 0, _pointCount); |
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384 | glPointSize(1); |
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385 | glDrawArrays(GL_POINTS, 0, _pointCount); |
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386 | |
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387 | glDisableClientState(GL_VERTEX_ARRAY); |
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388 | |
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389 | cgGLDisableProfile(CG_PROFILE_VP40); |
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390 | cgGLDisableProfile(CG_PROFILE_FP40); |
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391 | |
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392 | glDepthMask(GL_TRUE); |
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393 | |
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394 | glDisable(GL_POINT_SPRITE_NV); |
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395 | glDisable(GL_VERTEX_PROGRAM_POINT_SIZE_NV); |
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396 | |
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397 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
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398 | glDisable(GL_BLEND); |
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399 | #ifdef USE_NANOVIS_LIB |
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400 | _arrowsTex->deactivate(); |
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401 | #else |
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402 | _arrowsTex->unbind(); |
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403 | #endif |
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404 | } |
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405 | glPopMatrix(); |
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406 | } |
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407 | |
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408 | |
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409 | void |
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410 | VelocityArrowsSlice::vectorField(unsigned int vfGraphicsID, |
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411 | float xScale, float yScale, float zScale) |
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412 | { |
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413 | _vectorFieldGraphicsID = vfGraphicsID; |
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414 | _vfXscale = xScale; |
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415 | _vfYscale = yScale; |
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416 | _vfZscale = zScale; |
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417 | |
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418 | //_dirty = true; |
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419 | } |
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420 | |
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421 | void VelocityArrowsSlice::tickCountForMinSizeAxis(int tickCount) |
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422 | { |
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423 | _tickCountForMinSizeAxis = tickCount; |
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424 | |
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425 | //_dirty = true; |
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426 | } |
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427 | |
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428 | void VelocityArrowsSlice::computeSamplingTicks() |
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429 | { |
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430 | if (_vfXscale < _vfYscale) { |
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431 | if (_vfXscale < _vfZscale) { |
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432 | // vfXscale |
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433 | _tickCountX = _tickCountForMinSizeAxis; |
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434 | |
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435 | float step = _vfXscale / (_tickCountX + 1); |
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436 | |
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437 | _tickCountY = (int)(_vfYscale/step); |
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438 | _tickCountZ = (int)(_vfZscale/step); |
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439 | //vscalex = 1; |
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440 | //vscaley = _vfXscale / _vfXscale; |
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441 | //vscalez = _vfZscale / _vfXscale; |
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442 | } else { |
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443 | // vfZscale |
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444 | _tickCountZ = _tickCountForMinSizeAxis; |
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445 | |
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446 | float step = _vfZscale / (_tickCountZ + 1); |
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447 | _tickCountX = (int)(_vfXscale/step); |
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448 | _tickCountY = (int)(_vfYscale/step); |
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449 | //vscalex = _vfXscale / _vfZscale; |
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450 | //vscaley = _vfYscale / _vfZscale; |
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451 | //vscalez = 1; |
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452 | } |
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453 | } else { |
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454 | if (_vfYscale < _vfZscale) { |
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455 | // _vfYscale |
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456 | _tickCountY = _tickCountForMinSizeAxis; |
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457 | |
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458 | float step = _vfYscale / (_tickCountY + 1); |
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459 | _tickCountX = (int)(_vfXscale/step); |
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460 | _tickCountZ = (int)(_vfZscale/step); |
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461 | |
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462 | //vscalex = _vfXscale / _vfYscale; |
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463 | //vscaley = 1; |
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464 | //vscalez = _vfZscale / _vfYscale; |
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465 | } else { |
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466 | // vfZscale |
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467 | _tickCountZ = _tickCountForMinSizeAxis; |
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468 | |
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469 | float step = _vfZscale / (_tickCountZ + 1); |
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470 | _tickCountX = (int)(_vfXscale/step); |
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471 | _tickCountY = (int)(_vfYscale/step); |
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472 | |
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473 | //vscalex = _vfXscale / _vfZscale; |
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474 | //vscaley = _vfYscale / _vfZscale; |
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475 | //vscalez = 1; |
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476 | } |
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477 | } |
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478 | |
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479 | _maxVelocityScale.x = 1.0f / _tickCountX * 0.8f; |
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480 | _maxVelocityScale.y = 1.0f / _tickCountY * 0.8f; |
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481 | _maxVelocityScale.z = 1.0f / _tickCountZ * 0.8f; |
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482 | |
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483 | int pointCount = _tickCountX * _tickCountY * _tickCountZ; |
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484 | if (_pointCount != pointCount) { |
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485 | _samplingPositions.clear(); |
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486 | _samplingPositions.reserve(pointCount); |
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487 | _pointCount = pointCount; |
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488 | } |
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489 | |
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490 | if (_renderMode == LINES) { |
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491 | Vector3 pos; |
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492 | if (_axis == 2) { |
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493 | for (int y = 1; y <= _tickCountY; ++y) { |
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494 | for (int x = 1; x <= _tickCountX; ++x) { |
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495 | pos.x = (1.0f / (_tickCountX + 1)) * x; |
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496 | pos.y = (1.0f / (_tickCountY + 1)) * y; |
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497 | pos.z = _slicePos; |
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498 | _samplingPositions.push_back(pos); |
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499 | } |
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500 | } |
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501 | } else if (_axis == 1) { |
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502 | for (int z = 1; z <= _tickCountZ; ++z) { |
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503 | for (int x = 1; x <= _tickCountX; ++x) { |
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504 | pos.x = (1.0f / (_tickCountX + 1)) * x; |
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505 | pos.y = _slicePos; |
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506 | pos.z = (1.0f / (_tickCountZ + 1)) * z; |
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507 | _samplingPositions.push_back(pos); |
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508 | } |
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509 | } |
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510 | } else if (_axis == 0) { |
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511 | for (int z = 1; z <= _tickCountZ; ++z) { |
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512 | for (int y = 1; y <= _tickCountY; ++y) { |
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513 | pos.x = _slicePos; |
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514 | pos.y = (1.0f / (_tickCountY + 1)) * y; |
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515 | pos.z = (1.0f / (_tickCountZ + 1)) * z; |
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516 | _samplingPositions.push_back(pos); |
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517 | } |
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518 | } |
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519 | } |
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520 | } else { |
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521 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _vertexBufferGraphicsID); |
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522 | Vector3* pinfo = (Vector3*) glMapBufferARB(GL_ARRAY_BUFFER, GL_WRITE_ONLY_ARB); |
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523 | |
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524 | Vector3 pos; |
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525 | if (_axis == 2) { |
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526 | for (int y = 1; y <= _tickCountY; ++y) { |
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527 | for (int x = 1; x <= _tickCountX; ++x) { |
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528 | pos.x = (1.0f / (_tickCountX + 1)) * x; |
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529 | pos.y = (1.0f / (_tickCountY + 1)) * y; |
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530 | pos.z = _slicePos; |
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531 | |
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532 | *pinfo = pos; |
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533 | ++pinfo; |
---|
534 | } |
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535 | } |
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536 | } else if (_axis == 1) { |
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537 | for (int z = 1; z <= _tickCountZ; ++z) { |
---|
538 | for (int x = 1; x <= _tickCountX; ++x) { |
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539 | pos.x = (1.0f / (_tickCountX + 1)) * x; |
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540 | pos.y = _slicePos; |
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541 | pos.z = (1.0f / (_tickCountZ + 1)) * z; |
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542 | |
---|
543 | *pinfo = pos; |
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544 | ++pinfo; |
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545 | } |
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546 | } |
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547 | } else if (_axis == 0) { |
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548 | for (int z = 1; z <= _tickCountZ; ++z) { |
---|
549 | for (int y = 1; y <= _tickCountY; ++y) { |
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550 | pos.x = _slicePos; |
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551 | pos.y = (1.0f / (_tickCountY + 1)) * y; |
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552 | pos.z = (1.0f / (_tickCountZ + 1)) * z; |
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553 | |
---|
554 | *pinfo = pos; |
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555 | ++pinfo; |
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556 | } |
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557 | } |
---|
558 | } |
---|
559 | |
---|
560 | glUnmapBufferARB(GL_ARRAY_BUFFER_ARB); |
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561 | } |
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562 | } |
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563 | |
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564 | void VelocityArrowsSlice::slicePos(float pos) |
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565 | { |
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566 | _slicePos = pos; |
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567 | _dirty = true; |
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568 | } |
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