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.h: package header |
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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 | * Purdue Rendering and Perceptualization Lab (PURPL) |
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9 | * |
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10 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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11 | * |
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12 | * See the file "license.terms" for information on usage and |
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13 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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14 | * ====================================================================== |
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15 | */ |
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16 | #ifndef NANOVIS_H |
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17 | #define NANOVIS_H |
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18 | |
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19 | #include <tcl.h> |
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20 | #include <md5.h> |
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21 | #include <GL/glew.h> |
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22 | |
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23 | #include <math.h> |
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24 | #include <stddef.h> // For size_t |
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25 | #include <stdio.h> |
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26 | |
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27 | #include <vector> |
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28 | #include <iostream> |
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29 | |
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30 | #include <vrmath/Vector3f.h> |
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31 | |
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32 | #include "config.h" |
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33 | |
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34 | #define NANOVIS_VERSION "1.1" |
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35 | |
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36 | //defines for the image based flow visualization |
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37 | #define NMESH 256 //resolution of flow mesh |
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38 | #define NPIX 512 //display size |
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39 | |
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40 | namespace nv { |
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41 | namespace graphics { |
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42 | class RenderContext; |
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43 | } |
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44 | namespace util { |
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45 | class Fonts; |
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46 | } |
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47 | } |
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48 | |
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49 | class VolumeRenderer; |
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50 | class PointSetRenderer; |
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51 | class NvParticleRenderer; |
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52 | class NvFlowVisRenderer; |
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53 | class PlaneRenderer; |
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54 | class VelocityArrowsSlice; |
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55 | class NvLIC; |
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56 | class PointSet; |
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57 | class Texture2D; |
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58 | class NvColorTableRenderer; |
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59 | class HeightMap; |
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60 | class NvVectorField; |
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61 | class Grid; |
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62 | class NvCamera; |
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63 | class TransferFunction; |
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64 | class Volume; |
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65 | class FlowCmd; |
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66 | class FlowIterator; |
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67 | |
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68 | class NanoVis |
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69 | { |
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70 | public: |
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71 | enum AxisDirections { |
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72 | X_POS = 1, |
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73 | Y_POS = 2, |
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74 | Z_POS = 3, |
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75 | X_NEG = -1, |
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76 | Y_NEG = -2, |
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77 | Z_NEG = -3 |
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78 | }; |
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79 | |
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80 | enum NanoVisFlags { |
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81 | REDRAW_PENDING = (1 << 0), |
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82 | MAP_FLOWS = (1 << 1) |
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83 | }; |
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84 | |
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85 | static void processCommands(); |
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86 | static void init(const char *path); |
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87 | static void initGL(); |
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88 | static void initOffscreenBuffer(); |
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89 | static void resizeOffscreenBuffer(int w, int h); |
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90 | static void setBgColor(float color[3]); |
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91 | static void render(); |
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92 | static void draw3dAxis(); |
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93 | static void idle(); |
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94 | static void update(); |
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95 | static void removeAllData(); |
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96 | |
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97 | static const NvCamera *getCamera() |
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98 | { |
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99 | return cam; |
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100 | } |
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101 | static void pan(float dx, float dy); |
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102 | static void zoom(float z); |
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103 | static void resetCamera(bool resetOrientation = false); |
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104 | |
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105 | static void eventuallyRedraw(unsigned int flag = 0); |
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106 | |
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107 | static void setVolumeRanges(); |
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108 | static void setHeightmapRanges(); |
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109 | |
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110 | #ifdef KEEPSTATS |
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111 | static int getStatsFile(Tcl_Obj *objPtr); |
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112 | static int writeToStatsFile(int f, const char *s, size_t length); |
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113 | #endif |
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114 | static void ppmWrite(const char *prefix); |
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115 | static void sendDataToClient(const char *command, const char *data, |
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116 | size_t dlen); |
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117 | static void bmpWrite(const char *prefix); |
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118 | static void bmpWriteToFile(int frame_number, const char* directory_name); |
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119 | |
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120 | static TransferFunction *getTransfunc(const char *name); |
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121 | static TransferFunction *defineTransferFunction(const char *name, |
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122 | size_t n, float *data); |
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123 | |
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124 | static int renderLegend(TransferFunction *tf, double min, double max, |
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125 | int width, int height, const char *volArg); |
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126 | |
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127 | static Volume *loadVolume(const char *tag, int width, int height, int depth, |
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128 | int n, float* data, double vmin, double vmax, |
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129 | double nonZeroMin); |
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130 | |
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131 | static void removeVolume(Volume *volPtr); |
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132 | |
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133 | static void readScreen() |
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134 | { |
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135 | glReadPixels(0, 0, winWidth, winHeight, GL_RGB, GL_UNSIGNED_BYTE, |
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136 | screenBuffer); |
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137 | } |
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138 | static void bindOffscreenBuffer() |
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139 | { |
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140 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _finalFbo); |
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141 | } |
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142 | |
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143 | static FlowCmd *FirstFlow(FlowIterator *iterPtr); |
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144 | static FlowCmd *NextFlow(FlowIterator *iterPtr); |
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145 | static void InitFlows(); |
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146 | static int GetFlow(Tcl_Interp *interp, Tcl_Obj *objPtr, |
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147 | FlowCmd **flowPtrPtr); |
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148 | static int CreateFlow(Tcl_Interp *interp, Tcl_Obj *objPtr); |
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149 | static void DeleteFlows(Tcl_Interp *interp); |
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150 | static bool MapFlows(); |
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151 | static void GetFlowBounds(vrmath::Vector3f& min, |
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152 | vrmath::Vector3f& max, |
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153 | bool onlyVisible = false); |
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154 | static void RenderFlows(); |
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155 | static void ResetFlows(); |
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156 | static bool UpdateFlows(); |
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157 | static void AdvectFlows(); |
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158 | |
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159 | static FILE *stdin, *logfile, *recfile; |
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160 | static int statsFile; |
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161 | static unsigned int flags; |
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162 | static bool debugFlag; |
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163 | static bool axisOn; |
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164 | static int winWidth; //size of the render window |
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165 | static int winHeight; //size of the render window |
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166 | static int renderWindow; |
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167 | static unsigned char *screenBuffer; |
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168 | static Texture2D *legendTexture; |
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169 | static Grid *grid; |
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170 | static nv::util::Fonts *fonts; |
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171 | static int updir; |
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172 | static NvCamera *cam; |
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173 | static nv::graphics::RenderContext *renderContext; |
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174 | |
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175 | static Tcl_HashTable tfTable; |
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176 | static Tcl_HashTable volumeTable; |
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177 | static Tcl_HashTable flowTable; |
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178 | static Tcl_HashTable heightmapTable; |
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179 | |
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180 | static double magMin, magMax; |
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181 | static float xMin, xMax, yMin, yMax, zMin, zMax, wMin, wMax; |
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182 | static vrmath::Vector3f sceneMin, sceneMax; |
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183 | |
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184 | static NvColorTableRenderer *colorTableRenderer; |
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185 | static VolumeRenderer *volRenderer; |
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186 | #ifdef notdef |
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187 | static NvFlowVisRenderer *flowVisRenderer; |
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188 | #endif |
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189 | static VelocityArrowsSlice *velocityArrowsSlice; |
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190 | static NvLIC *licRenderer; |
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191 | static PlaneRenderer *planeRenderer; |
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192 | #if PLANE_CMD |
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193 | static int numPlanes; |
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194 | static Texture2D *plane[]; ///< Pointers to 2D planes |
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195 | #endif |
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196 | #ifdef USE_POINTSET_RENDERER |
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197 | static PointSetRenderer *pointSetRenderer; |
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198 | static std::vector<PointSet *> pointSet; |
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199 | #endif |
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200 | |
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201 | static Tcl_Interp *interp; |
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202 | static struct timeval startTime; /* Start of elapsed time. */ |
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203 | private: |
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204 | static void collectBounds(bool onlyVisible = false); |
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205 | |
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206 | static float _licSlice; ///< Slice position [0,1] |
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207 | static int _licAxis; ///< Slice axis: 0:x, 1:y, 2:z |
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208 | |
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209 | //frame buffer for final rendering |
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210 | static GLuint _finalFbo, _finalColorTex, _finalDepthRb; |
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211 | }; |
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212 | |
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213 | #endif |
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