Mercurial > sdl-ios-xcode
annotate test/testintersections.c @ 3566:07c8339c95c6
Fixed bug #905
Give the foreign window message proc more control over Windows events.
This may need to be adjusted when we add the capability for the app to specify whether it wants SDL to handle input for the window or not.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 15 Dec 2009 09:20:10 +0000 |
| parents | 0267b8b1595c |
| children | f638ded38b8a |
| rev | line source |
|---|---|
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1 |
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2 /* Simple program: draw as many random objects on the screen as possible */ |
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3 |
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4 #include <stdlib.h> |
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5 #include <stdio.h> |
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6 #include <time.h> |
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7 |
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8 #include "common.h" |
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9 |
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10 #define SWAP(typ,a,b) do{typ t=a;a=b;b=t;}while(0) |
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11 #define NUM_OBJECTS 100 |
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12 |
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13 static CommonState *state; |
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14 static int num_objects; |
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15 static SDL_bool cycle_color; |
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16 static SDL_bool cycle_alpha; |
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17 static int cycle_direction = 1; |
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18 static int current_alpha = 255; |
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19 static int current_color = 255; |
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20 static SDL_BlendMode blendMode = SDL_BLENDMODE_NONE; |
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21 |
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22 void |
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23 DrawPoints(SDL_WindowID window) |
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24 { |
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25 int i; |
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26 int x, y; |
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27 int window_w, window_h; |
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28 |
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29 /* Query the sizes */ |
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30 SDL_GetWindowSize(window, &window_w, &window_h); |
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31 |
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32 SDL_SetRenderDrawBlendMode(blendMode); |
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33 for (i = 0; i < num_objects * 4; ++i) { |
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34 /* Cycle the color and alpha, if desired */ |
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35 if (cycle_color) { |
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36 current_color += cycle_direction; |
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37 if (current_color < 0) { |
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38 current_color = 0; |
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39 cycle_direction = -cycle_direction; |
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40 } |
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41 if (current_color > 255) { |
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42 current_color = 255; |
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43 cycle_direction = -cycle_direction; |
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44 } |
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45 } |
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46 if (cycle_alpha) { |
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47 current_alpha += cycle_direction; |
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48 if (current_alpha < 0) { |
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49 current_alpha = 0; |
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50 cycle_direction = -cycle_direction; |
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51 } |
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52 if (current_alpha > 255) { |
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53 current_alpha = 255; |
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54 cycle_direction = -cycle_direction; |
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55 } |
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56 } |
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57 SDL_SetRenderDrawColor(255, (Uint8) current_color, |
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58 (Uint8) current_color, (Uint8) current_alpha); |
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59 |
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60 x = rand() % window_w; |
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61 y = rand() % window_h; |
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62 SDL_RenderPoint(x, y); |
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63 } |
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64 SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); |
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65 } |
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66 |
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67 #define MAX_LINES 16 |
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68 int num_lines = 0; |
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69 SDL_Rect lines[MAX_LINES]; |
| 2997 | 70 static int |
| 71 add_line(int x1, int y1, int x2, int y2) | |
| 72 { | |
| 73 if (num_lines >= MAX_LINES) | |
| 74 return 0; | |
| 75 if ((x1 == x2) && (y1 == y2)) | |
| 76 return 0; | |
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77 |
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78 printf("adding line (%d, %d), (%d, %d)\n", x1, y1, x2, y2); |
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79 lines[num_lines].x = x1; |
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80 lines[num_lines].y = y1; |
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81 lines[num_lines].w = x2; |
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82 lines[num_lines].h = y2; |
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83 |
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84 return ++num_lines; |
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85 } |
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86 |
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87 |
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88 void |
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89 DrawLines(SDL_WindowID window) |
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90 { |
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91 int i; |
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92 int x1, y1, x2, y2; |
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93 int window_w, window_h; |
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94 |
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95 /* Query the sizes */ |
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96 SDL_GetWindowSize(window, &window_w, &window_h); |
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97 |
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98 SDL_SetRenderDrawBlendMode(blendMode); |
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99 for (i = 0; i < num_lines; ++i) { |
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100 SDL_SetRenderDrawColor(255, 255, 255, 255); |
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101 |
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102 if (i == -1) { |
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103 SDL_RenderLine(0, 0, window_w - 1, window_h - 1); |
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104 SDL_RenderLine(0, window_h - 1, window_w - 1, 0); |
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105 SDL_RenderLine(0, window_h / 2, window_w - 1, window_h / 2); |
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106 SDL_RenderLine(window_w / 2, 0, window_w / 2, window_h - 1); |
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107 } else { |
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108 SDL_RenderLine(lines[i].x, lines[i].y, lines[i].w, lines[i].h); |
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109 } |
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110 } |
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111 SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); |
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112 } |
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113 |
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114 #define MAX_RECTS 16 |
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115 int num_rects = 0; |
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116 SDL_Rect rects[MAX_RECTS]; |
| 2997 | 117 static int |
| 118 add_rect(int x1, int y1, int x2, int y2) | |
| 119 { | |
| 120 if (num_rects >= MAX_RECTS) | |
| 121 return 0; | |
| 122 if ((x1 == x2) || (y1 == y2)) | |
| 123 return 0; | |
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124 |
| 2997 | 125 if (x1 > x2) |
| 126 SWAP(int, x1, x2); | |
| 127 if (y1 > y2) | |
| 128 SWAP(int, y1, y2); | |
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129 |
| 2997 | 130 printf("adding rect (%d, %d), (%d, %d) [%dx%d]\n", x1, y1, x2, y2, |
| 131 x2 - x1, y2 - y1); | |
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132 |
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133 rects[num_rects].x = x1; |
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134 rects[num_rects].y = y1; |
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135 rects[num_rects].w = x2 - x1; |
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136 rects[num_rects].h = y2 - y1; |
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137 |
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138 return ++num_rects; |
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139 } |
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140 |
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141 static void |
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142 DrawRects(SDL_WindowID window) |
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143 { |
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144 int i; |
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145 int window_w, window_h; |
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146 |
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147 /* Query the sizes */ |
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148 SDL_GetWindowSize(window, &window_w, &window_h); |
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149 |
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150 SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); |
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151 for (i = 0; i < num_rects; ++i) { |
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152 SDL_SetRenderDrawColor(255, 127, 0, 255); |
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153 SDL_RenderRect(&rects[i]); |
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154 } |
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155 SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); |
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156 } |
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157 |
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158 static void |
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159 DrawRectLineIntersections(SDL_WindowID window) |
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160 { |
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161 int i, j, window_w, window_h; |
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162 |
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163 /* Query the sizes */ |
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164 SDL_GetWindowSize(window, &window_w, &window_h); |
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165 |
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166 SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); |
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167 |
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168 for (i = 0; i < num_rects; i++) |
| 2997 | 169 for (j = 0; j < num_lines; j++) { |
| 170 int x1, y1, x2, y2; | |
| 171 SDL_Rect r; | |
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172 |
| 2997 | 173 r = rects[i]; |
| 174 x1 = lines[j].x; | |
| 175 y1 = lines[j].y; | |
| 176 x2 = lines[j].w; | |
| 177 y2 = lines[j].h; | |
| 178 | |
| 179 if (SDL_IntersectRectAndLine(&r, &x1, &y1, &x2, &y2)) { | |
| 180 SDL_SetRenderDrawColor(0, 255, 55, 255); | |
| 181 SDL_RenderLine(x1, y1, x2, y2); | |
| 182 } | |
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183 } |
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184 |
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185 SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); |
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186 } |
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187 |
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188 static void |
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189 DrawRectRectIntersections(SDL_WindowID window) |
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190 { |
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191 int i, j; |
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192 |
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193 SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); |
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194 |
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195 for (i = 0; i < num_rects; i++) |
| 2997 | 196 for (j = i + 1; j < num_rects; j++) { |
| 197 SDL_Rect r; | |
| 198 if (SDL_IntersectRect(&rects[i], &rects[j], &r)) { | |
| 199 SDL_SetRenderDrawColor(255, 200, 0, 255); | |
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200 SDL_RenderRect(&r); |
| 2997 | 201 } |
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202 } |
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203 |
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204 SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); |
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205 } |
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206 |
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207 int |
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208 main(int argc, char *argv[]) |
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209 { |
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210 int mouse_begin_x = -1, mouse_begin_y = -1; |
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211 int i, done; |
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212 SDL_Event event; |
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213 Uint32 then, now, frames; |
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214 |
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215 /* Initialize parameters */ |
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216 num_objects = NUM_OBJECTS; |
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217 |
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218 /* Initialize test framework */ |
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219 state = CommonCreateState(argv, SDL_INIT_VIDEO); |
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220 if (!state) { |
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221 return 1; |
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222 } |
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223 for (i = 1; i < argc;) { |
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224 int consumed; |
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225 |
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226 consumed = CommonArg(state, i); |
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227 if (consumed == 0) { |
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228 consumed = -1; |
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229 if (SDL_strcasecmp(argv[i], "--blend") == 0) { |
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230 if (argv[i + 1]) { |
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231 if (SDL_strcasecmp(argv[i + 1], "none") == 0) { |
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232 blendMode = SDL_BLENDMODE_NONE; |
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233 consumed = 2; |
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234 } else if (SDL_strcasecmp(argv[i + 1], "mask") == 0) { |
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235 blendMode = SDL_BLENDMODE_MASK; |
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236 consumed = 2; |
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237 } else if (SDL_strcasecmp(argv[i + 1], "blend") == 0) { |
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238 blendMode = SDL_BLENDMODE_BLEND; |
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239 consumed = 2; |
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240 } else if (SDL_strcasecmp(argv[i + 1], "add") == 0) { |
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241 blendMode = SDL_BLENDMODE_ADD; |
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242 consumed = 2; |
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243 } else if (SDL_strcasecmp(argv[i + 1], "mod") == 0) { |
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244 blendMode = SDL_BLENDMODE_MOD; |
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245 consumed = 2; |
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246 } |
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247 } |
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248 } else if (SDL_strcasecmp(argv[i], "--cyclecolor") == 0) { |
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249 cycle_color = SDL_TRUE; |
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250 consumed = 1; |
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251 } else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) { |
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252 cycle_alpha = SDL_TRUE; |
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253 consumed = 1; |
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254 } else if (SDL_isdigit(*argv[i])) { |
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255 num_objects = SDL_atoi(argv[i]); |
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256 consumed = 1; |
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257 } |
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258 } |
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259 if (consumed < 0) { |
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260 fprintf(stderr, |
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261 "Usage: %s %s [--blend none|mask|blend|add|mod] [--cyclecolor] [--cyclealpha]\n", |
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262 argv[0], CommonUsage(state)); |
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263 return 1; |
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264 } |
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265 i += consumed; |
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266 } |
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267 if (!CommonInit(state)) { |
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268 return 2; |
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269 } |
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270 |
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271 /* Create the windows and initialize the renderers */ |
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272 for (i = 0; i < state->num_windows; ++i) { |
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273 SDL_SelectRenderer(state->windows[i]); |
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274 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF); |
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275 SDL_RenderRect(NULL); |
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276 } |
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277 |
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278 srand(time(NULL)); |
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279 |
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280 /* Main render loop */ |
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281 frames = 0; |
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282 then = SDL_GetTicks(); |
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283 done = 0; |
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284 while (!done) { |
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285 /* Check for events */ |
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286 ++frames; |
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287 while (SDL_PollEvent(&event)) { |
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288 CommonEvent(state, &event, &done); |
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289 switch (event.type) { |
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290 case SDL_MOUSEBUTTONDOWN: |
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291 if (event.button.which == 0) { |
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292 mouse_begin_x = event.button.x; |
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293 mouse_begin_y = event.button.y; |
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294 } |
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295 break; |
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296 case SDL_MOUSEBUTTONUP: |
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297 if (event.button.which == 0) { |
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298 if (event.button.button == 3) |
| 2997 | 299 add_line(mouse_begin_x, mouse_begin_y, event.button.x, |
| 300 event.button.y); | |
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301 if (event.button.button == 1) |
| 2997 | 302 add_rect(mouse_begin_x, mouse_begin_y, event.button.x, |
| 303 event.button.y); | |
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304 } |
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305 break; |
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306 case SDL_KEYDOWN: |
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307 switch (event.key.keysym.sym) { |
| 2997 | 308 case 'l': |
| 309 if (event.key.keysym.mod & KMOD_SHIFT) | |
| 310 num_lines = 0; | |
| 311 else | |
| 312 add_line(rand() % 640, rand() % 480, rand() % 640, | |
| 313 rand() % 480); | |
| 314 break; | |
| 315 case 'r': | |
| 316 if (event.key.keysym.mod & KMOD_SHIFT) | |
| 317 num_rects = 0; | |
| 318 else | |
| 319 add_rect(rand() % 640, rand() % 480, rand() % 640, | |
| 320 rand() % 480); | |
| 321 break; | |
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322 } |
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323 break; |
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324 case SDL_WINDOWEVENT: |
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325 switch (event.window.event) { |
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326 case SDL_WINDOWEVENT_EXPOSED: |
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327 SDL_SelectRenderer(event.window.windowID); |
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328 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF); |
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329 SDL_RenderRect(NULL); |
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330 break; |
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331 } |
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332 break; |
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333 default: |
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334 break; |
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335 } |
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336 } |
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337 for (i = 0; i < state->num_windows; ++i) { |
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338 SDL_SelectRenderer(state->windows[i]); |
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339 SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF); |
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340 SDL_RenderRect(NULL); |
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341 |
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342 DrawRects(state->windows[i]); |
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343 DrawPoints(state->windows[i]); |
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344 DrawRectRectIntersections(state->windows[i]); |
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345 DrawLines(state->windows[i]); |
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346 DrawRectLineIntersections(state->windows[i]); |
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347 |
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348 SDL_RenderPresent(); |
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349 } |
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350 } |
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351 |
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352 CommonQuit(state); |
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353 |
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354 /* Print out some timing information */ |
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355 now = SDL_GetTicks(); |
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356 if (now > then) { |
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357 double fps = ((double) frames * 1000) / (now - then); |
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358 printf("%2.2f frames per second\n", fps); |
|
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359 } |
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360 return 0; |
|
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361 } |
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362 |
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363 /* vi: set ts=4 sw=4 expandtab: */ |