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26
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1 #include <iostream>
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2 #include <SDL.h>
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3 #include <SDL_opengl.h>
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4 #include <math.h>
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5 #include "polygon.h"
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6 //#include "demonstration.h"
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7 //#include "scene.h"
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8 #include "viewer.h"
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9 #include "sys.h"
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10 using namespace std;
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11
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12 extern int create_sgp(SceneGraphPack *sgp, Polygon *sg);
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13 extern int update_sgp(SceneGraphPack *sgp, SceneGraphPack *_sgp);
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14 extern int create_pp(PolygonPack *pp, SceneGraphPack *sgp);
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15
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16 Viewer::Viewer(int b, int w, int h)
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17 {
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18 bpp = b;
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19 width = w;
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20 height = h;
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21 }
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22
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23
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24 void Viewer::sdl_init()
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25 {
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26 if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
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27 {
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28 fprintf(stderr,"Couldn't initialize SDL: %s\n",SDL_GetError());
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29 exit( 1 );
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30 }
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31 screen = SDL_SetVideoMode( width, height, bpp, SDL_HWSURFACE );
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32
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33 //manager = new TaskManager(1);
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34 //manager->init();
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35
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36 manager->set_symbol("CreateSGP", (void*)create_sgp);
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37 manager->set_symbol("UpdateSGP", (void*)update_sgp);
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38 manager->set_symbol("CreatePP", (void*)create_pp);
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39 }
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40
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41
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42 void Viewer::init()
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43 {
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44 if(SDL_Init( SDL_INIT_VIDEO ) < 0)
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45 {
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46 cout << "Couldn't initialize SDL:" << SDL_GetError() << endl;
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47 exit(1);
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48 }
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49
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50 /* See if we should detect the display depth */
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51 if(bpp == 0)
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52 {
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53 if (SDL_GetVideoInfo()->vfmt->BitsPerPixel <= 8)
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54 {
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55 bpp = 8;
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56 }
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57 else
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58 {
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59 bpp = 16; /* More doesn't seem to work */
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60 }
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61 }
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62
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63 //video_flags = SDL_OPENGL;
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64 video_flags = SDL_HWSURFACE;
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65
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66 /* Initialize the display */
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67 switch (bpp)
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68 {
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69 case 8:
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70 rgb_size[0] = 3;
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71 rgb_size[1] = 3;
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72 rgb_size[2] = 2;
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73 break;
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74 case 15:
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75 case 16:
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76 rgb_size[0] = 5;
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77 rgb_size[1] = 5;
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78 rgb_size[2] = 5;
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79 break;
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80 default:
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81 rgb_size[0] = 8;
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82 rgb_size[1] = 8;
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83 rgb_size[2] = 8;
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84 break;
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85 }
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86
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87 SDL_GL_SetAttribute(SDL_GL_RED_SIZE, rgb_size[0]);
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88 SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, rgb_size[1]);
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89 SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, rgb_size[2]);
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90 SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
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91 SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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92
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93 SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 0);
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94
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95 screen = SDL_SetVideoMode(width, height, bpp, video_flags);
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96
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97 if(screen == NULL)
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98 {
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99 cout << "Couldn't set GL mode: " << SDL_GetError() << endl;
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100 SDL_Quit();
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101 exit(1);
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102 }
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103
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104 SDL_WM_SetCaption("SDL GL test", "testgl");
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105
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106 glViewport(0, 0, width, height);
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107
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108 glMatrixMode(GL_PROJECTION);
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109 glLoadIdentity();
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110
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111 glOrtho(-width/10, width/10, -height/10, height/10, -40.0, 400.0);
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112
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113 glMatrixMode(GL_MODELVIEW);
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114 glLoadIdentity();
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115
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116 glEnable(GL_DEPTH_TEST);
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117
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118 glDepthFunc(GL_LESS);
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119
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120 glShadeModel(GL_SMOOTH);
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121 }
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122
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123 int Viewer::get_ticks()
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124 {
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125 int time;
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126 time = SDL_GetTicks();
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127 return time;
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128 }
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129
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130 bool Viewer::quit_check()
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131 {
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132 bool quit = false;
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133 SDL_Event event;
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134 while(SDL_PollEvent(&event))
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135 {
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136 if(event.type==SDL_QUIT)
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137 {
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138 quit = true;
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139 return quit;
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140 }
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141 }
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142 return quit;
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143 }
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144
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145 void Viewer::quit()
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146 {
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147 SDL_Quit();
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148 }
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149
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150
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151 void Viewer::swap_buffers()
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152 {
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153 SDL_GL_SwapBuffers();
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154 }
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155
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156
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157 void Viewer::write_pixel(int x, int y,float z, Uint32 rgb) {
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158 SDL_PixelFormat *pf;
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159 pf = screen->format;
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160 //printf("x:%d y:%d z:%d\n",x,y,z);
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161
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162 //cout << "write_pixel" << endl;
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163 //cout << x << " " << y << endl;
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164
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165 //cout << SDL_MapRGB(pf,0,0,150) << endl;
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166
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167 x += width/2;
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168 y += height/2;
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169
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170 static int diffz,diffz1;
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171 diffz1 = diffz;
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172 diffz = (zRow[x][y]>z);
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173 if(diffz != diffz1) {
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174 //printf("diffz :%d zRow[%d][%d] = %f z = %f\n",diffz,x,y,zRow[x][y],z);
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175 }
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176 //printf("x:%d,y:%d,z:%f,zRow:%f\n",x,y,z,zRow[x][y]);
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177 if(z < zRow[x][y]) {
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178 // printf("x:%d,y:%d,z:%d\n",x,y,z,zRow);
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179 if(x < width && x > 0 && y > 0 && y < height)
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180 {
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181 //pixels[width*y + x] = SDL_MapRGB(pf,70,70,71);
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182 zRow[x][y] = z;
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183 y = height - y;
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184 pixels[width*y + x] = rgb;
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185 }
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186 }
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187 }
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188
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189 void Viewer::write_line(float x1, float y1, float x2, float y2, Uint32 rgb)
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190 {
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191 //cout << "write_line("<< x1 << "," << y1 << "," << x2 << "," << y2 << ")"<< endl;
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192
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193 //Uint32 rgb = 9830400;
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194
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195 if(x1 > x2)
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196 {
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197 float x=0;
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198 float y=0;
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199 x=x1;
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200 y=y1;
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201 x1 = x2;
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202 y1 = y2;
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203 x2 = x;
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204 y2 = y;
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205 }
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206 float s = y1;
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207
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208 if((int)x1 == (int)x2)
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209 {
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210 if(y1 > y2)
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211 {
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212 float y=0;
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213 y = y1;
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214 y1 = y2;
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215 y2 = y;
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216 }
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217 for(float i=y1; i<y2; i++)
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218 {
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219 //write_pixel((int)x1,(int)i);
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220 write_pixel((int)x1,(int)i,0,rgb);
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221 }
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222 }
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223 else
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224 {
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225 float t = (y2 - y1)/(x2 - x1);
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226 if(t < -1)
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227 {
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228 float f = 0;
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229 for(float i=x1; i<x2; i++)
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230 {
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231 for(float a=(int)t; a<0; a++)
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232 {
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233 //write_pixel((int)i,(int)s);
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234 write_pixel((int)i,(int)s,0,rgb);
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235 s--;
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236 }
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237 f += t-(int)t;
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238 if(f <= -1)
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239 {
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240 //write_pixel((int)i,(int)s);
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241 write_pixel((int)i,(int)s,0,rgb);
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242 f = 0;
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243 s--;
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244 }
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245 }
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246 }
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247 else if(t <= 1)
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248 {
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249 for(float i=x1; i<x2; i++)
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250 {
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251 //write_pixel((int)i,(int)s);
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252 write_pixel((int)i,(int)s,0,rgb);
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253 s += t;
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254 }
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255 }
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256 else
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257 {
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258 float f = 0;
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259 for(float i=x1; i<x2; i++)
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260 {
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261 for(float a=0; a<(int)t; a++)
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262 {
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263 //write_pixel((int)i,(int)s);
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264 write_pixel((int)i,(int)s,0,rgb);
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265 s++;
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266 }
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267 f += t-(int)t;
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268 if(f >= 1)
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269 {
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270 //write_pixel((int)i,(int)s);
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271 write_pixel((int)i,(int)s,0,rgb);
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272 f = 0;
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273 s++;
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274 }
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275 }
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276 }
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277 }
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278 }
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279
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280 void Viewer::write_triangle(float x1, float y1, float x2, float y2, float x3, float y3, Uint32 rgb)
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281 {
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282 write_line(x1,y1,x2,y2,rgb);
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283 write_line(x2,y2,x3,y3,rgb);
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284 write_line(x3,y3,x1,y1,rgb);
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285 }
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286
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287 void Viewer::clean_pixels()
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288 {
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289 for(int i=0; i<width*height; i++)
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290 {
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291 pixels[i] = 0x00;
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292 }
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293 }
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294
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295 void Viewer::graph_line()
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296 {
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297 int xl = width*height/2;
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298 int yl = width/2;
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299 for(int i=0; i<width; i++)
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300 {
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301 for(int t=0; t<height; t+=20)
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302 {
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303 pixels[width*t+i] = 0x5a;
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304 }
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305 pixels[xl +i] = 0xff;
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306 }
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307 for(int i=0; i<height; i++)
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308 {
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309 for(int t=0; t<width; t+=20)
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310 {
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311 pixels[i*width+t] = 0x5a;
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312 }
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313 pixels[i*width+yl] = 0xff;
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314 }
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315 }
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316
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317
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318 void Viewer::run()
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319 {
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320 int frames = 0;
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321 int start_time, this_time;
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322
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323 HTaskPtr task_update_sgp = NULL;
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324 HTaskPtr task_create_pp = NULL;
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325 int fd_update_sgp;
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326 int fd_create_pp;
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327
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328 start_time = get_ticks();
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329
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330 SDL_Surface *bitmap = NULL;
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331 SDL_PixelFormat *pf;
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332 pf = screen->format;
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333
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334 Uint32 background;
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335 background = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
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336
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337 pixels = new Uint32[width*height];
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338
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339 Polygon *p = new Polygon;
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340 p->set_data("cube.xml");
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341 //p->set_data("cube-p.xml");
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342
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343 p->viewer = this;
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344 //p->screen = screen;
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345 /*
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346 p->next->viewer = this;
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347 p->next->next->viewer = this;
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348 p->next->next->next->viewer = this;
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349 p->next->next->next->next->viewer = this;
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350 p->next->next->next->next->next->viewer = this;
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351 p->next->next->next->next->next->next->viewer = this;
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352 p->next->next->next->next->next->next->next->viewer = this;
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353 p->next->next->next->next->next->next->next->next->viewer = this;
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354 p->next->next->next->next->next->next->next->next->next->viewer = this;
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355 */
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356
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357 SceneGraphPack *sgp = new SceneGraphPack;
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358 create_sgp(sgp,p);
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359
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360 PolygonPack *pp = new PolygonPack;
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361
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362 graph_line();
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363
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364 float r = 0;
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365 float x = 0;
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366 float y = 0;
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367 float z = 0;
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368
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369 // Loop until done.
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370 while(1)
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371 {
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372 // Destroy our GL context, etc.
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373 //if(quit_check() || scene->action_scene==NULL)
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374 if(quit_check())
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375 {
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376 this_time = get_ticks();
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377 if (this_time != start_time)
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378 {
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379 cout<<((float)frames/(this_time-start_time))*1000.0<<" FPS\n";
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380 }
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381 SDL_FreeSurface(bitmap);
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382 delete pixels;
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383 p->delete_data();
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384 delete p;
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385 delete sgp;
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386 delete pp;
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387 quit();
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388 break;
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389 }
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390 /////////////////////
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391 clean_pixels();
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392
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393 this->zRow_init();
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394 graph_line();
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395
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396 if(r > 360) r = 0;
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397 r+= 1.0;
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398 // r= 0;
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399 p->angle[0] = 0;
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400 p->angle[1] = r;
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401 p->angle[2] = 0;
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402 //p->child->angle[1] = r*2;
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403 //p->child->brother->angle[1] = r*3;
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404 //p->child->brother->child->angle[1] = r*4;
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405 x += 0.5;
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406 y += 0.5;
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407 z += 0.5;
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408 //p->xyz[0] = x;
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409 //p->xyz[1] = y;
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410 //p->xyz[2] = z;
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411 //p->tree_draw();
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412
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413
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414 update_sgp(sgp, sgp);
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415 //create_pp(pp, sgp);
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416
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417 //fd_update_sgp = manager->open("UpdateSGP");
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418 fd_create_pp = manager->open("CreatePP");
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419 #if 1
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420 //task_update_sgp = manager->create_task(fd_update_sgp,
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421 //sizeof(SceneGraphPack),
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422 //(unsigned int)sgp,
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423 // (unsigned int)sgp,
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424 //NULL);
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425
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426 task_create_pp = manager->create_task(fd_create_pp,
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427 sizeof(SceneGraphPack),
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428 (unsigned int)sgp,
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429 (unsigned int)pp,
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430 NULL);
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431 //manager->set_task_depend(task_update_sgp, task_create_pp);
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432 //manager->spawn_task(task_update_sgp);
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433 manager->spawn_task(task_create_pp);
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434
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435 manager->run();
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436 #endif
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437 //p->draw(sgp);
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438 p->draw(pp);
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439
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440 bitmap = SDL_CreateRGBSurfaceFrom((void *)pixels,width,height,32,width*4,0x00ff0000,0x0000ff00,0x000000ff,0);
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441 SDL_FillRect(screen, NULL, background);
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442 SDL_BlitSurface(bitmap,NULL,screen,NULL);
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443 SDL_UpdateRect(screen,0,0,0,0);
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444
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445
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446 /////////////////////
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447
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448 //swap_buffers();
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449 ++frames;
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450 }
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451 }
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452
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453 void Viewer::zRow_init() {
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454 int i,j;
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455 for(i = 0;i < 640; i++) {
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456 for(j = 0; j < 480; j++) {
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457 zRow[i][j] = 65535;
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458 }
|
|
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459 }
|
|
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460 }
|
