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annotate test/testintersections.c @ 5167:97423d858a1a

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Added an intro to the features and goals of the 2D rendering API.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Feb 2011 10:03:55 -0800
parents ad50b3db78bd
children d976b67150c5
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_Window * window, SDL_Renderer * renderer)
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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 for (i = 0; i < num_objects * 4; ++i) {
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33 /* Cycle the color and alpha, if desired */
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34 if (cycle_color) {
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35 current_color += cycle_direction;
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36 if (current_color < 0) {
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37 current_color = 0;
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38 cycle_direction = -cycle_direction;
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39 }
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40 if (current_color > 255) {
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41 current_color = 255;
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42 cycle_direction = -cycle_direction;
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43 }
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44 }
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45 if (cycle_alpha) {
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46 current_alpha += cycle_direction;
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47 if (current_alpha < 0) {
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48 current_alpha = 0;
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49 cycle_direction = -cycle_direction;
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50 }
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51 if (current_alpha > 255) {
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52 current_alpha = 255;
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53 cycle_direction = -cycle_direction;
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54 }
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55 }
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56 SDL_SetRenderDrawColor(renderer, 255, (Uint8) current_color,
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57 (Uint8) current_color, (Uint8) current_alpha);
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58
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59 x = rand() % window_w;
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60 y = rand() % window_h;
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61 SDL_RenderDrawPoint(renderer, x, y);
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62 }
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63 }
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64
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65 #define MAX_LINES 16
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66 int num_lines = 0;
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67 SDL_Rect lines[MAX_LINES];
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68 static int
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69 add_line(int x1, int y1, int x2, int y2)
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70 {
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71 if (num_lines >= MAX_LINES)
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72 return 0;
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73 if ((x1 == x2) && (y1 == y2))
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74 return 0;
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75
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76 printf("adding line (%d, %d), (%d, %d)\n", x1, y1, x2, y2);
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77 lines[num_lines].x = x1;
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78 lines[num_lines].y = y1;
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79 lines[num_lines].w = x2;
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80 lines[num_lines].h = y2;
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81
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82 return ++num_lines;
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83 }
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84
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85
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86 void
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87 DrawLines(SDL_Window * window, SDL_Renderer * renderer)
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88 {
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89 int i;
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90 int x1, y1, x2, y2;
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91 int window_w, window_h;
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92
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93 /* Query the sizes */
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94 SDL_GetWindowSize(window, &window_w, &window_h);
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95
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96 for (i = 0; i < num_lines; ++i) {
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97 SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
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98
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99 if (i == -1) {
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100 SDL_RenderDrawLine(renderer, 0, 0, window_w - 1, window_h - 1);
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101 SDL_RenderDrawLine(renderer, 0, window_h - 1, window_w - 1, 0);
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102 SDL_RenderDrawLine(renderer, 0, window_h / 2, window_w - 1, window_h / 2);
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103 SDL_RenderDrawLine(renderer, window_w / 2, 0, window_w / 2, window_h - 1);
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104 } else {
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105 SDL_RenderDrawLine(renderer, lines[i].x, lines[i].y, lines[i].w, lines[i].h);
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106 }
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107 }
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108 }
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109
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110 #define MAX_RECTS 16
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111 int num_rects = 0;
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112 SDL_Rect rects[MAX_RECTS];
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113 static int
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114 add_rect(int x1, int y1, int x2, int y2)
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115 {
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116 if (num_rects >= MAX_RECTS)
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117 return 0;
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118 if ((x1 == x2) || (y1 == y2))
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119 return 0;
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120
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121 if (x1 > x2)
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122 SWAP(int, x1, x2);
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123 if (y1 > y2)
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124 SWAP(int, y1, y2);
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125
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126 printf("adding rect (%d, %d), (%d, %d) [%dx%d]\n", x1, y1, x2, y2,
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127 x2 - x1, y2 - y1);
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128
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129 rects[num_rects].x = x1;
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130 rects[num_rects].y = y1;
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131 rects[num_rects].w = x2 - x1;
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132 rects[num_rects].h = y2 - y1;
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133
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134 return ++num_rects;
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parents:
diff changeset
135 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
136
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diff changeset
137 static void
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parents: 5143
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138 DrawRects(SDL_Window * window, SDL_Renderer * renderer)
2994
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diff changeset
139 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 int i;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141 int window_w, window_h;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 /* Query the sizes */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 SDL_GetWindowSize(window, &window_w, &window_h);
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parents:
diff changeset
145
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 for (i = 0; i < num_rects; ++i) {
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parents: 5143
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147 SDL_SetRenderDrawColor(renderer, 255, 127, 0, 255);
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parents: 5143
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148 SDL_RenderFillRect(renderer, &rects[i]);
2994
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149 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 static void
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parents: 5143
diff changeset
153 DrawRectLineIntersections(SDL_Window * window, SDL_Renderer * renderer)
2994
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diff changeset
154 {
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
155 int i, j, window_w, window_h;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 /* Query the sizes */
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parents:
diff changeset
158 SDL_GetWindowSize(window, &window_w, &window_h);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 for (i = 0; i < num_rects; i++)
2997
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diff changeset
161 for (j = 0; j < num_lines; j++) {
Sam Lantinga <slouken@libsdl.org>
parents: 2994
diff changeset
162 int x1, y1, x2, y2;
Sam Lantinga <slouken@libsdl.org>
parents: 2994
diff changeset
163 SDL_Rect r;
2994
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parents:
diff changeset
164
2997
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165 r = rects[i];
Sam Lantinga <slouken@libsdl.org>
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166 x1 = lines[j].x;
Sam Lantinga <slouken@libsdl.org>
parents: 2994
diff changeset
167 y1 = lines[j].y;
Sam Lantinga <slouken@libsdl.org>
parents: 2994
diff changeset
168 x2 = lines[j].w;
Sam Lantinga <slouken@libsdl.org>
parents: 2994
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169 y2 = lines[j].h;
Sam Lantinga <slouken@libsdl.org>
parents: 2994
diff changeset
170
Sam Lantinga <slouken@libsdl.org>
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171 if (SDL_IntersectRectAndLine(&r, &x1, &y1, &x2, &y2)) {
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parents: 5143
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172 SDL_SetRenderDrawColor(renderer, 0, 255, 55, 255);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5143
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173 SDL_RenderDrawLine(renderer, x1, y1, x2, y2);
2997
Sam Lantinga <slouken@libsdl.org>
parents: 2994
diff changeset
174 }
2994
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diff changeset
175 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
178 static void
5150
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parents: 5143
diff changeset
179 DrawRectRectIntersections(SDL_Window * window, SDL_Renderer * renderer)
2994
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180 {
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parents:
diff changeset
181 int i, j;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182
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parents:
diff changeset
183 for (i = 0; i < num_rects; i++)
2997
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diff changeset
184 for (j = i + 1; j < num_rects; j++) {
Sam Lantinga <slouken@libsdl.org>
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diff changeset
185 SDL_Rect r;
Sam Lantinga <slouken@libsdl.org>
parents: 2994
diff changeset
186 if (SDL_IntersectRect(&rects[i], &rects[j], &r)) {
5150
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parents: 5143
diff changeset
187 SDL_SetRenderDrawColor(renderer, 255, 200, 0, 255);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
188 SDL_RenderFillRect(renderer, &r);
2997
Sam Lantinga <slouken@libsdl.org>
parents: 2994
diff changeset
189 }
2994
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
191 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
193 int
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
194 main(int argc, char *argv[])
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195 {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
196 int mouse_begin_x = -1, mouse_begin_y = -1;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197 int i, done;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
198 SDL_Event event;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
199 Uint32 then, now, frames;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
200
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
201 /* Initialize parameters */
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
202 num_objects = NUM_OBJECTS;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 /* Initialize test framework */
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
205 state = CommonCreateState(argv, SDL_INIT_VIDEO);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 if (!state) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
207 return 1;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
209 for (i = 1; i < argc;) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 int consumed;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 consumed = CommonArg(state, i);
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 if (consumed == 0) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214 consumed = -1;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 if (SDL_strcasecmp(argv[i], "--blend") == 0) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 if (argv[i + 1]) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 if (SDL_strcasecmp(argv[i + 1], "none") == 0) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 blendMode = SDL_BLENDMODE_NONE;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219 consumed = 2;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220 } else if (SDL_strcasecmp(argv[i + 1], "blend") == 0) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 blendMode = SDL_BLENDMODE_BLEND;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 consumed = 2;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 } else if (SDL_strcasecmp(argv[i + 1], "add") == 0) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224 blendMode = SDL_BLENDMODE_ADD;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 consumed = 2;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 } else if (SDL_strcasecmp(argv[i], "--cyclecolor") == 0) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
229 cycle_color = SDL_TRUE;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
230 consumed = 1;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 } else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 cycle_alpha = SDL_TRUE;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 consumed = 1;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 } else if (SDL_isdigit(*argv[i])) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 num_objects = SDL_atoi(argv[i]);
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236 consumed = 1;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 if (consumed < 0) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 fprintf(stderr,
5143
e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
Sam Lantinga <slouken@libsdl.org>
parents: 4465
diff changeset
241 "Usage: %s %s [--blend none|blend|add] [--cyclecolor] [--cyclealpha]\n",
2994
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 argv[0], CommonUsage(state));
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 return 1;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 i += consumed;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247 if (!CommonInit(state)) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 return 2;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 /* Create the windows and initialize the renderers */
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 for (i = 0; i < state->num_windows; ++i) {
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
253 SDL_Renderer *renderer = state->renderers[i];
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
254 SDL_SetRenderDrawBlendMode(renderer, blendMode);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
255 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
256 SDL_RenderClear(renderer);
2994
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259 srand(time(NULL));
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
260
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 /* Main render loop */
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 frames = 0;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263 then = SDL_GetTicks();
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 done = 0;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 while (!done) {
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 /* Check for events */
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 ++frames;
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 while (SDL_PollEvent(&event)) {
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269 CommonEvent(state, &event, &done);
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270 switch (event.type) {
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271 case SDL_MOUSEBUTTONDOWN:
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3e69e077cb95 Removed multi-mouse / multi-keyboard support in anticipation of a real multi-mouse and multi-touch API.
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272 mouse_begin_x = event.button.x;
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273 mouse_begin_y = event.button.y;
2994
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274 break;
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275 case SDL_MOUSEBUTTONUP:
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276 if (event.button.button == 3)
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277 add_line(mouse_begin_x, mouse_begin_y, event.button.x,
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278 event.button.y);
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279 if (event.button.button == 1)
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280 add_rect(mouse_begin_x, mouse_begin_y, event.button.x,
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281 event.button.y);
2994
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282 break;
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283 case SDL_KEYDOWN:
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284 switch (event.key.keysym.sym) {
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diff changeset
285 case 'l':
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286 if (event.key.keysym.mod & KMOD_SHIFT)
Sam Lantinga <slouken@libsdl.org>
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287 num_lines = 0;
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288 else
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289 add_line(rand() % 640, rand() % 480, rand() % 640,
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290 rand() % 480);
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291 break;
Sam Lantinga <slouken@libsdl.org>
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diff changeset
292 case 'r':
Sam Lantinga <slouken@libsdl.org>
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293 if (event.key.keysym.mod & KMOD_SHIFT)
Sam Lantinga <slouken@libsdl.org>
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294 num_rects = 0;
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295 else
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296 add_rect(rand() % 640, rand() % 480, rand() % 640,
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297 rand() % 480);
Sam Lantinga <slouken@libsdl.org>
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diff changeset
298 break;
2994
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299 }
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300 break;
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301 default:
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302 break;
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Sam Lantinga <slouken@libsdl.org>
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303 }
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304 }
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diff changeset
305 for (i = 0; i < state->num_windows; ++i) {
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
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parents: 5143
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306 SDL_Renderer *renderer = state->renderers[i];
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
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parents: 5143
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307 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
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308 SDL_RenderClear(renderer);
2994
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309
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
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parents: 5143
diff changeset
310 DrawRects(state->windows[i], renderer);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5143
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311 DrawPoints(state->windows[i], renderer);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
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parents: 5143
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312 DrawRectRectIntersections(state->windows[i], renderer);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
313 DrawLines(state->windows[i], renderer);
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
314 DrawRectLineIntersections(state->windows[i], renderer);
2994
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315
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
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parents: 5143
diff changeset
316 SDL_RenderPresent(renderer);
2994
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317 }
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Sam Lantinga <slouken@libsdl.org>
parents:
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318 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
319
3371
438ba87e9578 Call CommonQuit() at exit has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 2997
diff changeset
320 CommonQuit(state);
438ba87e9578 Call CommonQuit() at exit has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 2997
diff changeset
321
2994
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diff changeset
322 /* Print out some timing information */
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parents:
diff changeset
323 now = SDL_GetTicks();
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parents:
diff changeset
324 if (now > then) {
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parents:
diff changeset
325 double fps = ((double) frames * 1000) / (now - then);
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parents:
diff changeset
326 printf("%2.2f frames per second\n", fps);
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327 }
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parents:
diff changeset
328 return 0;
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parents:
diff changeset
329 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
330
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
331 /* vi: set ts=4 sw=4 expandtab: */