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annotate test/testshape.c @ 5074:906d7293bb47

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Fixed bug in timer when the list of timers changed. Fix contributed by Michael Bicha
author Sam Lantinga <slouken@libsdl.org>
date Sat, 22 Jan 2011 00:33:37 -0800
parents 6ccfbaef0c0a
children dc0dfdd58f27
rev   line source
4799
a0e096916474 Rewrote test program for shaped windows. It definitely displays recognizable pictures now, but the resizing and shaping functionality isn't behaving correctly, possibly due to a miscalculation of alpha values.
Eli Gottlieb <eligottlieb@gmail.com>
parents:
diff changeset
1 #include <stdlib.h>
a0e096916474 Rewrote test program for shaped windows. It definitely displays recognizable pictures now, but the resizing and shaping functionality isn't behaving correctly, possibly due to a miscalculation of alpha values.
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2 #include <math.h>
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3 #include <stdio.h>
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4 #include "SDL.h"
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5 #include "SDL_shape.h"
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6
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7 #define SHAPED_WINDOW_X 150
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8 #define SHAPED_WINDOW_Y 150
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9 #define SHAPED_WINDOW_DIMENSION 640
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10
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11 #define TICK_INTERVAL 1000/10
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12
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13 typedef struct LoadedPicture {
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14 SDL_Surface *surface;
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15 SDL_Texture *texture;
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16 SDL_WindowShapeMode mode;
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17 } LoadedPicture;
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18
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19 void render(SDL_Window* window,SDL_Texture *texture,SDL_Rect texture_dimensions) {
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20 SDL_SelectRenderer(window);
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21
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22 //Clear render-target to blue.
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23 SDL_SetRenderDrawColor(0x00,0x00,0xff,0xff);
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24 SDL_RenderClear();
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25
b33752266d8f Boxed up the rendering loop and turned it into a redraw/update function. This makes things way more responsive, usable again.
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26 //Render the texture.
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27 SDL_RenderCopy(texture,&texture_dimensions,&texture_dimensions);
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28
b33752266d8f Boxed up the rendering loop and turned it into a redraw/update function. This makes things way more responsive, usable again.
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29 SDL_RenderPresent();
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30 }
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31
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32 static Uint32 next_time;
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33
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34 Uint32 time_left() {
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35 Uint32 now = SDL_GetTicks();
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36 if(next_time <= now)
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37 return 0;
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38 else
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39 return next_time - now;
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40 }
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41
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42 int main(int argc,char** argv) {
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43 Uint8 num_pictures;
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44 LoadedPicture* pictures;
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45 int i, j;
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46 SDL_PixelFormat* format = NULL;
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47 SDL_Window *window;
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48 SDL_Color black = {0,0,0,0xff};
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49 SDL_Event event;
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50 int event_pending = 0;
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51 int should_exit = 0;
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52 unsigned int current_picture;
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53 int button_down;
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54 Uint32 pixelFormat = 0;
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55 int access = 0;
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56 SDL_Rect texture_dimensions;;
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57
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58 if(argc < 2) {
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59 printf("SDL_Shape requires at least one bitmap file as argument.\n");
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60 exit(-1);
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61 }
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62
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63 if(SDL_VideoInit(NULL,0) == -1) {
a0e096916474 Rewrote test program for shaped windows. It definitely displays recognizable pictures now, but the resizing and shaping functionality isn't behaving correctly, possibly due to a miscalculation of alpha values.
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64 printf("Could not initialize SDL video.\n");
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65 exit(-2);
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66 }
a0e096916474 Rewrote test program for shaped windows. It definitely displays recognizable pictures now, but the resizing and shaping functionality isn't behaving correctly, possibly due to a miscalculation of alpha values.
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67
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68 num_pictures = argc - 1;
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69 pictures = (LoadedPicture *)malloc(sizeof(LoadedPicture)*num_pictures);
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a0e096916474 Rewrote test program for shaped windows. It definitely displays recognizable pictures now, but the resizing and shaping functionality isn't behaving correctly, possibly due to a miscalculation of alpha values.
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70 for(i=0;i<num_pictures;i++)
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71 pictures[i].surface = NULL;
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72 for(i=0;i<num_pictures;i++) {
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73 pictures[i].surface = SDL_LoadBMP(argv[i+1]);
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74 if(pictures[i].surface == NULL) {
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75 j = 0;
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76 for(j=0;j<num_pictures;j++)
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77 if(pictures[j].surface != NULL)
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78 SDL_FreeSurface(pictures[j].surface);
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79 free(pictures);
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80 SDL_VideoQuit();
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81 printf("Could not load surface from named bitmap file.\n");
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82 exit(-3);
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83 }
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84
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85 format = pictures[i].surface->format;
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86 if(format->Amask != 0) {
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87 pictures[i].mode.mode = ShapeModeBinarizeAlpha;
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88 pictures[i].mode.parameters.binarizationCutoff = 255;
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89 }
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90 else {
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91 pictures[i].mode.mode = ShapeModeColorKey;
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92 pictures[i].mode.parameters.colorKey = black;
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93 }
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94 }
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95
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96 window = SDL_CreateShapedWindow("SDL_Shape test",SHAPED_WINDOW_X,SHAPED_WINDOW_Y,SHAPED_WINDOW_DIMENSION,SHAPED_WINDOW_DIMENSION,SDL_WINDOW_RESIZABLE | SDL_WINDOW_SHOWN);
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97 if(window == NULL) {
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98 for(i=0;i<num_pictures;i++)
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99 SDL_FreeSurface(pictures[i].surface);
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100 free(pictures);
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101 SDL_VideoQuit();
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102 printf("Could not create shaped window for SDL_Shape.\n");
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103 exit(-4);
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104 }
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105 if(SDL_CreateRenderer(window,-1,SDL_RENDERER_PRESENTFLIP2) == -1) {
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106 SDL_DestroyWindow(window);
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107 for(i=0;i<num_pictures;i++)
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108 SDL_FreeSurface(pictures[i].surface);
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109 free(pictures);
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110 SDL_VideoQuit();
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111 printf("Could not create rendering context for SDL_Shape window.\n");
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112 exit(-5);
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113 }
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114
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115 for(i=0;i<num_pictures;i++)
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116 pictures[i].texture = NULL;
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117 for(i=0;i<num_pictures;i++) {
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118 pictures[i].texture = SDL_CreateTextureFromSurface(0,pictures[i].surface);
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119 if(pictures[i].texture == NULL) {
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120 j = 0;
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121 for(j=0;j<num_pictures;i++)
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122 if(pictures[i].texture != NULL)
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123 SDL_DestroyTexture(pictures[i].texture);
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124 for(i=0;i<num_pictures;i++)
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125 SDL_FreeSurface(pictures[i].surface);
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126 free(pictures);
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127 SDL_DestroyRenderer(window);
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128 SDL_DestroyWindow(window);
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129 SDL_VideoQuit();
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130 printf("Could not create texture for SDL_shape.\n");
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131 exit(-6);
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132 }
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133 }
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134
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135 event_pending = 0;
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136 should_exit = 0;
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137 event_pending = SDL_PollEvent(&event);
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138 current_picture = 0;
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139 button_down = 0;
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140 texture_dimensions.h = 0;
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141 texture_dimensions.w = 0;
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142 texture_dimensions.x = 0;
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143 texture_dimensions.y = 0;
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144 SDL_QueryTexture(pictures[current_picture].texture,(Uint32 *)&pixelFormat,(int *)&access,&texture_dimensions.w,&texture_dimensions.h);
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145 SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);
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146 SDL_SetWindowShape(window,pictures[current_picture].surface,&pictures[current_picture].mode);
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147 next_time = SDL_GetTicks() + TICK_INTERVAL;
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148 while(should_exit == 0) {
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149 event_pending = SDL_PollEvent(&event);
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150 if(event_pending == 1) {
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151 if(event.type == SDL_KEYDOWN) {
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152 button_down = 1;
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153 if(event.key.keysym.sym == SDLK_ESCAPE)
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154 should_exit = 1;
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155 }
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156 if(button_down && event.type == SDL_KEYUP) {
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157 button_down = 0;
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158 current_picture += 1;
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159 if(current_picture >= num_pictures)
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160 current_picture = 0;
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161 SDL_QueryTexture(pictures[current_picture].texture,(Uint32 *)&pixelFormat,(int *)&access,&texture_dimensions.w,&texture_dimensions.h);
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162 SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);
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163 SDL_SetWindowShape(window,pictures[current_picture].surface,&pictures[current_picture].mode);
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164 }
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165 if(event.type == SDL_QUIT)
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166 should_exit = 1;
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167 event_pending = 0;
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168 }
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169 render(window,pictures[current_picture].texture,texture_dimensions);
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170 SDL_Delay(time_left());
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171 next_time += TICK_INTERVAL;
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172 }
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173
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174 //Free the textures.
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175 for(i=0;i<num_pictures;i++)
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176 SDL_DestroyTexture(pictures[i].texture);
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177 //Destroy the window.
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178 SDL_DestroyWindow(window);
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179 //Free the original surfaces backing the textures.
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180 for(i=0;i<num_pictures;i++)
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181 SDL_FreeSurface(pictures[i].surface);
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182 free(pictures);
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183 //Call SDL_VideoQuit() before quitting.
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184 SDL_VideoQuit();
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185
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186 return 0;
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187 }