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) 2004-2006 Purdue Research Foundation |
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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 | |
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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 <rappture.h> |
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31 | |
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32 | #include "define.h" |
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33 | #include "global.h" |
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34 | #include "config.h" |
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35 | |
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36 | #define NANOVIS_VERSION "1.0" |
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37 | |
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38 | //defines for the image based flow visualization |
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39 | #define NPN 256 //resolution of background pattern |
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40 | #define NMESH 256 //resolution of flow mesh |
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41 | #define DM ((float) (1.0/(NMESH-1.0))) //distance in world coords between mesh lines |
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42 | #define NPIX 512 //display size |
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43 | #define SCALE 3.0 //scale for background pattern. small value -> fine texture |
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44 | |
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45 | namespace graphics { |
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46 | class RenderContext; |
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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 R2Fonts; |
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63 | class NvCamera; |
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64 | class TransferFunction; |
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65 | class Volume; |
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66 | class FlowCmd; |
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67 | class FlowIterator; |
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68 | |
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69 | struct Vector2 { |
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70 | float x, y; |
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71 | float mag() |
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72 | { |
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73 | return sqrt(x*x + y*y); |
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74 | } |
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75 | }; |
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76 | |
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77 | struct RegGrid2 { |
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78 | int width, height; |
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79 | Vector2 *field; |
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80 | |
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81 | RegGrid2(int w, int h) |
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82 | { |
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83 | width = w; |
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84 | height = h; |
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85 | field = new Vector2[w*h]; |
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86 | } |
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87 | |
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88 | void put(Vector2& v, int x ,int y) |
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89 | { |
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90 | field[x+y*width] = v; |
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91 | } |
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92 | |
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93 | Vector2& get(int x, int y) |
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94 | { |
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95 | return field[x+y*width]; |
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96 | } |
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97 | }; |
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98 | |
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99 | class NanoVis |
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100 | { |
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101 | public: |
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102 | enum NanoVisFlags { |
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103 | REDRAW_PENDING = (1 << 0), |
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104 | MAP_FLOWS = (1 << 1), |
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105 | MAP_VOLUMES = (1 << 2), |
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106 | MAP_HEIGHTMAPS = (1 << 3), |
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107 | }; |
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108 | |
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109 | static VolumeRenderer *vol_renderer; |
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110 | static PointSetRenderer *pointset_renderer; |
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111 | #ifndef NEW_FLOW_ENGINE |
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112 | static NvParticleRenderer *flowVisRenderer; |
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113 | #else |
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114 | static NvFlowVisRenderer *flowVisRenderer; |
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115 | #endif |
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116 | static VelocityArrowsSlice *velocityArrowsSlice; |
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117 | static NvLIC *licRenderer; |
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118 | static PlaneRenderer *plane_renderer; |
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119 | static std::vector<PointSet *> pointSet; |
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120 | |
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121 | /** |
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122 | * pointers to 2D planes |
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123 | */ |
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124 | static Texture2D *plane[]; |
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125 | static NvColorTableRenderer *color_table_renderer; |
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126 | static graphics::RenderContext *renderContext; |
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127 | static std::vector<HeightMap *> heightMap; |
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128 | static unsigned char *screen_buffer; |
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129 | static Tcl_HashTable volumeTable; |
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130 | static Tcl_HashTable heightmapTable; |
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131 | static std::vector<NvVectorField *> flow; |
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132 | static Grid *grid; |
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133 | static R2Fonts *fonts; |
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134 | static int updir; |
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135 | static NvCamera *cam; |
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136 | |
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137 | static float lic_slice_x; |
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138 | static float lic_slice_y; |
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139 | static float lic_slice_z; |
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140 | static int lic_axis; /* 0:x, 1:y, 2:z */ |
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141 | |
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142 | static bool axis_on; |
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143 | static bool config_pending; // Indicates if the limits need to be recomputed. |
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144 | static int win_width; //size of the render window |
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145 | static int win_height; //size of the render window |
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146 | static int render_window; |
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147 | |
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148 | static bool debug_flag; |
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149 | |
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150 | static Tcl_Interp *interp; |
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151 | static Tcl_DString cmdbuffer; |
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152 | |
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153 | static TransferFunction *get_transfunc(const char *name); |
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154 | static TransferFunction *DefineTransferFunction(const char *name, |
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155 | size_t n, float *data); |
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156 | static void SetVolumeRanges(); |
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157 | static void SetHeightmapRanges(); |
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158 | static void init(const char *path); |
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159 | static void initGL(); |
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160 | static void init_lic(); |
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161 | static void init_offscreen_buffer(); |
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162 | static void initParticle(); |
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163 | static void resize_offscreen_buffer(int w, int h); |
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164 | |
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165 | // For development |
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166 | static void resize(int w, int h); |
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167 | static void render(); |
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168 | |
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169 | static void ppm_write(const char *prefix); |
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170 | static void sendDataToClient(const char *command, const char *data, |
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171 | size_t dlen); |
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172 | static void bmp_write(const char *prefix); |
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173 | static void bmp_write_to_file(int frame_number, const char* directory_name); |
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174 | static void display(); |
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175 | static void idle(); |
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176 | static void update(); |
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177 | static void display_offscreen_buffer(); |
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178 | static int render_legend(TransferFunction *tf, double min, double max, |
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179 | int width, int height, const char *volArg); |
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180 | static Volume *load_volume(const char *tag, int width, int height, |
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181 | int depth, int n, float* data, double vmin, double vmax, |
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182 | double nzero_min); |
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183 | static void xinetd_listen(); |
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184 | static int render_2d_contour(HeightMap *heightmap, int width, int height); |
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185 | static void pan(float dx, float dy); |
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186 | |
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187 | #ifndef XINETD |
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188 | static void keyboard(unsigned char key, int x, int y); |
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189 | static void mouse(int button, int state, int x, int y); |
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190 | static void motion(int x, int y); |
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191 | static void update_rot(int delta_x, int delta_y); |
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192 | static void update_trans(int delta_x, int delta_y, int delta_z); |
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193 | #endif |
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194 | |
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195 | static FILE *stdin, *logfile, *recfile; |
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196 | |
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197 | static void read_screen() |
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198 | { |
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199 | glReadPixels(0, 0, win_width, win_height, GL_RGB, GL_UNSIGNED_BYTE, |
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200 | screen_buffer); |
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201 | } |
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202 | static void offscreen_buffer_capture() |
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203 | { |
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204 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _final_fbo); |
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205 | } |
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206 | |
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207 | static unsigned int flags; |
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208 | static Tcl_HashTable flowTable; |
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209 | static double magMin, magMax; |
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210 | static float xMin, xMax, yMin, yMax, zMin, zMax, wMin, wMax; |
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211 | static float xOrigin, yOrigin, zOrigin; |
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212 | |
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213 | static FlowCmd *FirstFlow(FlowIterator *iterPtr); |
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214 | static FlowCmd *NextFlow(FlowIterator *iterPtr); |
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215 | static void InitFlows(); |
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216 | static int GetFlow(Tcl_Interp *interp, Tcl_Obj *objPtr, |
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217 | FlowCmd **flowPtrPtr); |
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218 | static int CreateFlow(Tcl_Interp *interp, Tcl_Obj *objPtr); |
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219 | static void DeleteFlows(Tcl_Interp *interp); |
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220 | static bool MapFlows(); |
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221 | static void RenderFlows(); |
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222 | static void ResetFlows(); |
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223 | static bool UpdateFlows(); |
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224 | static void AdvectFlows(); |
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225 | |
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226 | static void EventuallyRedraw(unsigned int flag = 0); |
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227 | static void remove_volume(Volume *volPtr); |
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228 | static Tcl_HashTable tfTable; |
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229 | |
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230 | private: |
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231 | //frame buffer for final rendering |
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232 | static GLuint _final_fbo, _final_color_tex, _final_depth_rb; |
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233 | }; |
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234 | |
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235 | extern Volume *load_volume_stream(Rappture::Outcome &status, const char *tag, |
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236 | std::iostream& fin); |
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237 | |
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238 | extern Volume *load_volume_stream_odx(Rappture::Outcome& status, |
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239 | const char *tag, const char *buf, int nBytes); |
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240 | |
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241 | extern Volume *load_volume_stream2(Rappture::Outcome & status, const char *tag, |
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242 | std::iostream& fin); |
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243 | |
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244 | extern Volume *load_vector_stream(Rappture::Outcome& result, const char *tag, |
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245 | size_t length, char *bytes); |
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246 | |
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247 | extern Volume *load_vector_stream2(Rappture::Outcome& result, const char *tag, |
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248 | size_t length, char *bytes); |
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249 | |
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250 | #endif |
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