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 | #include <GL/gl.h> |
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6 | #ifdef HAVE_OPENCV_H |
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7 | #include <opencv/cv.h> |
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8 | #endif |
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9 | #ifdef HAVE_OPENCV_HIGHGUI_H |
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10 | #include <opencv/highgui.h> |
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11 | #endif |
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12 | |
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13 | #include <R2/R2FilePath.h> |
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14 | |
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15 | #include "VelocityArrowsSlice.h" |
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16 | #include "global.h" |
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17 | |
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18 | VelocityArrowsSlice::VelocityArrowsSlice() |
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19 | { |
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20 | _enabled = false; |
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21 | _context = cgCreateContext(); |
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22 | _vectorFieldGraphicsID = 0; |
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23 | _vfXscale = _vfYscale = _vfZscale = 0; |
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24 | _slicePos = 0.5f; |
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25 | _vertexBufferGraphicsID = 0; |
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26 | axis(2); |
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27 | //_renderMode = GLYPHS; |
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28 | _renderMode = LINES; |
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29 | |
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30 | _tickCountForMinSizeAxis = 10; |
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31 | |
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32 | _queryVelocityFP = |
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33 | LoadCgSourceProgram(_context, "queryvelocity.cg", CG_PROFILE_FP30, "main"); |
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34 | |
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35 | _qvVectorFieldParam = cgGetNamedParameter(_queryVelocityFP, "vfield"); |
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36 | |
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37 | _dirty = true; |
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38 | _dirtySamplingPosition = true; |
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39 | _dirtyRenderTarget = true; |
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40 | _maxVelocityScale.x = _maxVelocityScale.y = _maxVelocityScale.z = 1.0f; |
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41 | |
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42 | _renderTargetWidth = 128; |
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43 | _renderTargetHeight = 128; |
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44 | _velocities = new Vector3[_renderTargetWidth * _renderTargetHeight]; |
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45 | |
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46 | ::glGenBuffers(1, &_vertexBufferGraphicsID); |
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47 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _vertexBufferGraphicsID); |
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48 | glBufferDataARB(GL_ARRAY_BUFFER, _renderTargetWidth * _renderTargetHeight * 3 * sizeof(float), |
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49 | 0, GL_DYNAMIC_DRAW_ARB); |
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50 | glBindBufferARB(GL_ARRAY_BUFFER, 0); |
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51 | createRenderTarget(); |
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52 | _pointCount = 0; |
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53 | |
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54 | /* |
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55 | _particleVP = |
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56 | LoadCgSourceProgram(_context, "velocityslicevp.cg", CG_PROFILE_VP40, "vpmain"); |
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57 | |
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58 | _mvpParticleParam = cgGetNamedParameter(_particleVP, "mvp"); |
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59 | _mvParticleParam = cgGetNamedParameter(_particleVP, "modelview"); |
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60 | _mvTanHalfFOVParam = cgGetNamedParameter(_particleVP, "tanHalfFOV"); |
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61 | |
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62 | // TBD.. |
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63 | _particleFP = |
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64 | LoadCgSourceProgram(_context, "velocityslicefp.cg", CG_PROFILE_FP40, "fpmain"); |
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65 | |
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66 | _vectorParticleParam = cgGetNamedParameter(_particleVP, "vfield"); |
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67 | */ |
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68 | |
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69 | /* |
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70 | TRACE("test1\n"); |
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71 | const char *path = R2FilePath::getInstance()->getPath("arrows_flip2.png"); |
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72 | if (path) { |
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73 | TRACE("test2 %s\n", path); |
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74 | } else { |
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75 | TRACE("tt\n"); |
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76 | } |
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77 | IplImage* pTextureImage = cvLoadImage(path); |
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78 | TRACE("test3\n"); |
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79 | if (pTextureImage) { |
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80 | TRACE("file(%s) has been loaded\n", path); |
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81 | _arrowsTex = new Texture2D(pTextureImage->width, pTextureImage->height, GL_FLOAT, GL_LINEAR, 3, pTextureImage->imageData); |
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82 | //_arrowsTex->setWrapS(TW_MIRROR); |
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83 | //_arrowsTex->setWrapT(TW_MIRROR); |
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84 | TRACE("file(%s) has been loaded\n", path); |
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85 | //cvReleaseImage(&pTextureImage); |
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86 | } else { |
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87 | TRACE("not found\n"); |
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88 | } |
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89 | if (path) delete [] path; |
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90 | */ |
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91 | |
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92 | _arrowColor.set(1, 1, 0); |
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93 | |
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94 | TRACE("test1\n"); |
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95 | } |
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96 | |
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97 | VelocityArrowsSlice::~VelocityArrowsSlice() |
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98 | { |
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99 | cgDestroyProgram(_queryVelocityFP); |
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100 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _fbo); |
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101 | glDeleteTextures(1, &_tex); |
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102 | glDeleteFramebuffersEXT(1, &_fbo); |
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103 | |
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104 | delete _arrowsTex; |
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105 | |
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106 | cgDestroyProgram(_particleFP); |
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107 | cgDestroyProgram(_particleVP); |
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108 | |
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109 | glDeleteBuffers(1, &_vertexBufferGraphicsID); |
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110 | delete [] _velocities; |
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111 | } |
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112 | |
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113 | void VelocityArrowsSlice::createRenderTarget() |
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114 | { |
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115 | glGenFramebuffersEXT(1, &_fbo); |
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116 | glGenTextures(1, &_tex); |
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117 | |
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118 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _fbo); |
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119 | |
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120 | glViewport(0, 0, _renderTargetWidth, _renderTargetHeight); |
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121 | glMatrixMode(GL_PROJECTION); |
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122 | glLoadIdentity(); |
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123 | glOrtho(0, _renderTargetWidth, 0, _renderTargetHeight, -10.0f, 10.0f); |
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124 | glMatrixMode(GL_MODELVIEW); |
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125 | glLoadIdentity(); |
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126 | |
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127 | glBindTexture(GL_TEXTURE_RECTANGLE_NV, _tex); |
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128 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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129 | glTexParameterf(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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130 | glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
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131 | glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
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132 | |
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133 | glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, GL_FLOAT_RGBA32_NV, |
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134 | _renderTargetWidth, _renderTargetHeight, 0, |
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135 | GL_RGBA, GL_FLOAT, NULL); |
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136 | |
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137 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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138 | GL_TEXTURE_RECTANGLE_NV, _tex, 0); |
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139 | |
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140 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
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141 | } |
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142 | |
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143 | void VelocityArrowsSlice::axis(int axis) |
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144 | { |
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145 | _axis = axis; |
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146 | switch (_axis) { |
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147 | case 0: |
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148 | _projectionVector.x = 0; |
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149 | _projectionVector.y = 1; |
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150 | _projectionVector.z = 1; |
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151 | break; |
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152 | case 1 : |
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153 | _projectionVector.x = 1; |
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154 | _projectionVector.y = 0; |
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155 | _projectionVector.z = 1; |
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156 | break; |
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157 | case 2: |
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158 | _projectionVector.x = 1; |
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159 | _projectionVector.y = 1; |
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160 | _projectionVector.z = 0; |
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161 | break; |
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162 | } |
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163 | _dirtySamplingPosition = true; |
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164 | _dirtyRenderTarget = true; |
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165 | //_dirty = true; |
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166 | } |
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167 | |
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168 | void VelocityArrowsSlice::queryVelocity() |
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169 | { |
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170 | if (!_enabled) return; |
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171 | |
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172 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _fbo); |
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173 | glDisable(GL_DEPTH_TEST); |
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174 | cgGLBindProgram(_queryVelocityFP); |
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175 | cgGLEnableProfile(CG_PROFILE_FP30); |
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176 | cgGLSetTextureParameter(_qvVectorFieldParam, _vectorFieldGraphicsID); |
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177 | cgGLEnableTextureParameter(_qvVectorFieldParam); |
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178 | |
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179 | glPushAttrib(GL_VIEWPORT_BIT); |
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180 | glViewport(0, 0, _renderTargetWidth, _renderTargetHeight); |
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181 | glMatrixMode(GL_PROJECTION); |
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182 | glPushMatrix(); |
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183 | glLoadIdentity(); |
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184 | glOrtho(0, _renderTargetWidth, 0, _renderTargetHeight, -10.0f, 10.0f); |
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185 | glMatrixMode(GL_MODELVIEW); |
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186 | glPushMatrix(); |
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187 | glLoadIdentity(); |
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188 | |
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189 | glBegin(GL_POINTS); |
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190 | |
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191 | for (unsigned int index = 0; index < _samplingPositions.size(); ++index) { |
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192 | glMultiTexCoord3f(0, _samplingPositions[index].x,_samplingPositions[index].y,_samplingPositions[index].z); |
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193 | glVertex2f(index % _renderTargetWidth, |
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194 | index / _renderTargetHeight); |
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195 | } |
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196 | |
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197 | glEnd(); |
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198 | |
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199 | glDisable(GL_TEXTURE_RECTANGLE_NV); |
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200 | cgGLDisableTextureParameter(_qvVectorFieldParam); |
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201 | cgGLDisableProfile(CG_PROFILE_FP30); |
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202 | |
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203 | glReadPixels(0, 0, _renderTargetWidth, _renderTargetHeight, GL_RGB, GL_FLOAT, _velocities); |
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204 | |
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205 | glMatrixMode(GL_PROJECTION); |
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206 | glPopMatrix(); |
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207 | glMatrixMode(GL_MODELVIEW); |
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208 | glPopMatrix(); |
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209 | glPopAttrib(); |
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210 | |
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211 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
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212 | } |
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213 | |
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214 | void VelocityArrowsSlice::render() |
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215 | { |
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216 | //if (!_enabled || (_vectorFieldGraphicsID == 0)) return; |
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217 | if (!_enabled) return; |
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218 | |
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219 | if (_dirty) { |
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220 | computeSamplingTicks(); |
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221 | queryVelocity(); |
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222 | _dirty = false; |
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223 | } |
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224 | |
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225 | glPushMatrix(); |
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226 | |
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227 | glScalef(_vfXscale,_vfYscale, _vfZscale); |
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228 | glTranslatef(-0.5f, -0.5f, -0.5f); |
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229 | if (_renderMode == LINES) { |
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230 | glDisable(GL_TEXTURE_2D); |
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231 | glLineWidth(2.0); |
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232 | glColor3f(_arrowColor.x, _arrowColor.y, _arrowColor.z); |
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233 | glBegin(GL_LINES); |
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234 | Vector3 pos; |
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235 | Vector3 pos2; |
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236 | Vector3 vel(1, 0, 0); |
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237 | Vector3 v, v2; |
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238 | if (_axis == 2) { |
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239 | int index = 0; |
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240 | for (int y = 1; y <= _tickCountY; ++y) { |
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241 | for (int x = 1; x <= _tickCountX; ++x, ++index) { |
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242 | pos = this->_samplingPositions[index]; |
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243 | pos2 = this->_velocities[index].scale(_projectionVector).scale(_maxVelocityScale) + pos; |
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244 | glVertex3f(pos.x, pos.y, pos.z); |
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245 | glVertex3f(pos2.x, pos2.y, pos2.z); |
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246 | /*v = pos - pos2; |
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247 | v2.x = 1; |
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248 | v2.y = 1; |
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249 | v2.z = (-(x1-x2)-(y1-y2))/(z1-z2) |
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250 | adj = v.length() / (4 * sqrt((x3^2)+(y3^2)+(z3^2))); |
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251 | x3 *= adj |
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252 | y3 *= adj |
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253 | z3 *= adj |
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254 | */ |
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255 | } |
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256 | } |
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257 | } else if (_axis == 1) { |
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258 | int index = 0; |
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259 | for (int z = 1; z <= _tickCountZ; ++z) { |
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260 | for (int x = 1; x <= _tickCountX; ++x, ++index) { |
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261 | pos = _samplingPositions[index]; |
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262 | pos2 = this->_velocities[index].scale(_projectionVector).scale(_maxVelocityScale) + pos; |
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263 | |
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264 | glVertex3f(pos.x, pos.y, pos.z); |
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265 | glVertex3f(pos2.x, pos2.y, pos2.z); |
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266 | } |
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267 | } |
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268 | } else if (_axis == 0) { |
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269 | int index = 0; |
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270 | for (int z = 1; z <= _tickCountZ; ++z) { |
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271 | for (int y = 1; y <= _tickCountY; ++y, ++index) { |
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272 | pos = _samplingPositions[index]; |
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273 | pos2 = this->_velocities[index].scale(_projectionVector).scale(_maxVelocityScale) + pos; |
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274 | |
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275 | glVertex3f(pos.x, pos.y, pos.z); |
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276 | glVertex3f(pos2.x, pos2.y, pos2.z); |
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277 | } |
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278 | } |
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279 | } |
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280 | |
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281 | glEnd(); |
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282 | glLineWidth(1.0); |
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283 | } else { |
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284 | glColor3f(_arrowColor.x, _arrowColor.y, _arrowColor.z); |
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285 | glEnable(GL_BLEND); |
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286 | glBlendFunc(GL_SRC_ALPHA, GL_ONE); |
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287 | glEnable(GL_POINT_SPRITE_NV); |
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288 | glPointSize(20); |
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289 | glEnable(GL_VERTEX_PROGRAM_POINT_SIZE_NV); |
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290 | |
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291 | _arrowsTex->activate(); |
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292 | glEnable(GL_TEXTURE_2D); |
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293 | |
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294 | glPointParameterfARB( GL_POINT_FADE_THRESHOLD_SIZE_ARB, 0.0f ); |
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295 | |
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296 | glPointParameterfARB( GL_POINT_SIZE_MIN_ARB, 1.0f); |
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297 | glPointParameterfARB( GL_POINT_SIZE_MAX_ARB, 100.0f); |
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298 | glTexEnvf( GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE ); |
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299 | |
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300 | cgGLBindProgram(_particleVP); |
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301 | cgGLBindProgram(_particleFP); |
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302 | cgGLEnableProfile(CG_PROFILE_VP40); |
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303 | cgGLEnableProfile(CG_PROFILE_FP40); |
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304 | |
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305 | cgGLSetTextureParameter(_vectorParticleParam, _vectorFieldGraphicsID); |
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306 | cgGLEnableTextureParameter(_vectorParticleParam); |
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307 | |
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308 | //cgSetParameter1f(_mvTanHalfFOVParam, -tan(_fov * 0.5) * _screenHeight * 0.5); |
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309 | |
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310 | cgGLSetStateMatrixParameter(_mvpParticleParam, |
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311 | CG_GL_MODELVIEW_PROJECTION_MATRIX, |
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312 | CG_GL_MATRIX_IDENTITY); |
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313 | cgGLSetStateMatrixParameter(_mvParticleParam, |
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314 | CG_GL_MODELVIEW_MATRIX, |
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315 | CG_GL_MATRIX_IDENTITY); |
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316 | |
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317 | glEnableClientState(GL_VERTEX_ARRAY); |
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318 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _vertexBufferGraphicsID); |
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319 | glVertexPointer(3, GL_FLOAT, 0, 0); |
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320 | //glEnableClientState(GL_COLOR_ARRAY); |
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321 | |
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322 | // TBD.. |
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323 | glDrawArrays(GL_POINTS, 0, _pointCount); |
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324 | glPointSize(1); |
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325 | glDrawArrays(GL_POINTS, 0, _pointCount); |
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326 | |
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327 | glDisableClientState(GL_VERTEX_ARRAY); |
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328 | |
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329 | cgGLDisableProfile(CG_PROFILE_VP40); |
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330 | cgGLDisableProfile(CG_PROFILE_FP40); |
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331 | |
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332 | glDepthMask(GL_TRUE); |
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333 | |
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334 | glDisable(GL_POINT_SPRITE_NV); |
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335 | glDisable(GL_VERTEX_PROGRAM_POINT_SIZE_NV); |
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336 | |
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337 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
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338 | glDisable(GL_BLEND); |
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339 | _arrowsTex->deactivate(); |
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340 | } |
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341 | glPopMatrix(); |
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342 | } |
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343 | |
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344 | void |
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345 | VelocityArrowsSlice::vectorField(unsigned int vfGraphicsID, |
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346 | float xScale, float yScale, float zScale) |
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347 | { |
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348 | _vectorFieldGraphicsID = vfGraphicsID; |
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349 | _vfXscale = xScale; |
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350 | _vfYscale = yScale; |
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351 | _vfZscale = zScale; |
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352 | |
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353 | //_dirty = true; |
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354 | } |
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355 | |
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356 | void VelocityArrowsSlice::computeSamplingTicks() |
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357 | { |
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358 | if (_vfXscale < _vfYscale) { |
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359 | if (_vfXscale < _vfZscale) { |
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360 | // vfXscale |
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361 | _tickCountX = _tickCountForMinSizeAxis; |
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362 | |
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363 | float step = _vfXscale / (_tickCountX + 1); |
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364 | |
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365 | _tickCountY = (int)(_vfYscale/step); |
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366 | _tickCountZ = (int)(_vfZscale/step); |
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367 | //vscalex = 1; |
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368 | //vscaley = _vfXscale / _vfXscale; |
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369 | //vscalez = _vfZscale / _vfXscale; |
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370 | } else { |
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371 | // vfZscale |
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372 | _tickCountZ = _tickCountForMinSizeAxis; |
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373 | |
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374 | float step = _vfZscale / (_tickCountZ + 1); |
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375 | _tickCountX = (int)(_vfXscale/step); |
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376 | _tickCountY = (int)(_vfYscale/step); |
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377 | //vscalex = _vfXscale / _vfZscale; |
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378 | //vscaley = _vfYscale / _vfZscale; |
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379 | //vscalez = 1; |
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380 | } |
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381 | } else { |
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382 | if (_vfYscale < _vfZscale) { |
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383 | // _vfYscale |
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384 | _tickCountY = _tickCountForMinSizeAxis; |
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385 | |
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386 | float step = _vfYscale / (_tickCountY + 1); |
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387 | _tickCountX = (int)(_vfXscale/step); |
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388 | _tickCountZ = (int)(_vfZscale/step); |
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389 | |
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390 | //vscalex = _vfXscale / _vfYscale; |
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391 | //vscaley = 1; |
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392 | //vscalez = _vfZscale / _vfYscale; |
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393 | } else { |
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394 | // vfZscale |
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395 | _tickCountZ = _tickCountForMinSizeAxis; |
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396 | |
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397 | float step = _vfZscale / (_tickCountZ + 1); |
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398 | _tickCountX = (int)(_vfXscale/step); |
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399 | _tickCountY = (int)(_vfYscale/step); |
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400 | |
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401 | //vscalex = _vfXscale / _vfZscale; |
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402 | //vscaley = _vfYscale / _vfZscale; |
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403 | //vscalez = 1; |
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404 | } |
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405 | } |
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406 | |
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407 | _maxVelocityScale.x = 1.0f / _tickCountX * 0.8f; |
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408 | _maxVelocityScale.y = 1.0f / _tickCountY * 0.8f; |
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409 | _maxVelocityScale.z = 1.0f / _tickCountZ * 0.8f; |
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410 | |
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411 | int pointCount = _tickCountX * _tickCountY * _tickCountZ; |
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412 | if (_pointCount != pointCount) { |
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413 | _samplingPositions.clear(); |
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414 | _samplingPositions.reserve(pointCount); |
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415 | _pointCount = pointCount; |
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416 | } |
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417 | |
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418 | if (_renderMode == LINES) { |
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419 | Vector3 pos; |
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420 | if (_axis == 2) { |
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421 | for (int y = 1; y <= _tickCountY; ++y) { |
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422 | for (int x = 1; x <= _tickCountX; ++x) { |
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423 | pos.x = (1.0f / (_tickCountX + 1)) * x; |
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424 | pos.y = (1.0f / (_tickCountY + 1)) * y; |
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425 | pos.z = _slicePos; |
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426 | _samplingPositions.push_back(pos); |
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427 | } |
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428 | } |
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429 | } else if (_axis == 1) { |
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430 | for (int z = 1; z <= _tickCountZ; ++z) { |
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431 | for (int x = 1; x <= _tickCountX; ++x) { |
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432 | pos.x = (1.0f / (_tickCountX + 1)) * x; |
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433 | pos.y = _slicePos; |
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434 | pos.z = (1.0f / (_tickCountZ + 1)) * z; |
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435 | _samplingPositions.push_back(pos); |
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436 | } |
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437 | } |
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438 | } else if (_axis == 0) { |
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439 | for (int z = 1; z <= _tickCountZ; ++z) { |
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440 | for (int y = 1; y <= _tickCountY; ++y) { |
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441 | pos.x = _slicePos; |
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442 | pos.y = (1.0f / (_tickCountY + 1)) * y; |
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443 | pos.z = (1.0f / (_tickCountZ + 1)) * z; |
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444 | _samplingPositions.push_back(pos); |
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445 | } |
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446 | } |
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447 | } |
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448 | } else { |
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449 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _vertexBufferGraphicsID); |
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450 | Vector3* pinfo = (Vector3*) glMapBufferARB(GL_ARRAY_BUFFER, GL_WRITE_ONLY_ARB); |
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451 | |
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452 | Vector3 pos; |
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453 | if (_axis == 2) { |
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454 | for (int y = 1; y <= _tickCountY; ++y) { |
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455 | for (int x = 1; x <= _tickCountX; ++x) { |
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456 | pos.x = (1.0f / (_tickCountX + 1)) * x; |
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457 | pos.y = (1.0f / (_tickCountY + 1)) * y; |
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458 | pos.z = _slicePos; |
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459 | |
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460 | *pinfo = pos; |
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461 | ++pinfo; |
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462 | } |
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463 | } |
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464 | } else if (_axis == 1) { |
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465 | for (int z = 1; z <= _tickCountZ; ++z) { |
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466 | for (int x = 1; x <= _tickCountX; ++x) { |
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467 | pos.x = (1.0f / (_tickCountX + 1)) * x; |
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468 | pos.y = _slicePos; |
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469 | pos.z = (1.0f / (_tickCountZ + 1)) * z; |
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470 | |
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471 | *pinfo = pos; |
---|
472 | ++pinfo; |
---|
473 | } |
---|
474 | } |
---|
475 | } else if (_axis == 0) { |
---|
476 | for (int z = 1; z <= _tickCountZ; ++z) { |
---|
477 | for (int y = 1; y <= _tickCountY; ++y) { |
---|
478 | pos.x = _slicePos; |
---|
479 | pos.y = (1.0f / (_tickCountY + 1)) * y; |
---|
480 | pos.z = (1.0f / (_tickCountZ + 1)) * z; |
---|
481 | |
---|
482 | *pinfo = pos; |
---|
483 | ++pinfo; |
---|
484 | } |
---|
485 | } |
---|
486 | } |
---|
487 | |
---|
488 | glUnmapBufferARB(GL_ARRAY_BUFFER_ARB); |
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489 | } |
---|
490 | } |
---|