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comparison XCodeiPhoneOS/Demos/src/rectangles.c @ 2385:0705e8ebe951 gsoc2008_iphone

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Rectangles demo (SDL_RenderFill)
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Fri, 18 Jul 2008 20:52:18 +0000
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2384:6a946f3155d8 2385:0705e8ebe951
1 /*
2 * rectangles.c
3 * written by Holmes Futrell
4 * use however you want
5 */
6
7 #include "SDL.h"
8 #include <time.h>
9 #include "common.h"
10
11 void render(void) {
12
13 Uint8 r, g, b;
14 /* Come up with a random rectangle */
15 SDL_Rect rect;
16 rect.w = randomInt(64, 128);
17 rect.h = randomInt(64, 128);
18 rect.x = randomInt(0, SCREEN_WIDTH);
19 rect.y = randomInt(0, SCREEN_HEIGHT);
20
21 /* Come up with a random color */
22 r = randomInt(50, 255);
23 g = randomInt(50, 255);
24 b = randomInt(50, 255);
25
26 /* Fill the rectangle in the color */
27 SDL_RenderFill(r, g, b, 255, &rect);
28
29 /* update screen */
30 SDL_RenderPresent();
31
32 }
33
34 int main(int argc, char *argv[]) {
35
36 SDL_WindowID windowID;
37 int done;
38 SDL_Event event;
39
40 /* initialize SDL */
41 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
42 fatalError("Could not initialize SDL");
43 }
44
45 /* seed random number generator */
46 srand(time(NULL));
47
48 /* create window and renderer */
49 windowID = SDL_CreateWindow(NULL, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
50 if (windowID == 0) {
51 fatalError("Could not initialize Window");
52 }
53 if (SDL_CreateRenderer(windowID, -1, 0) != 0) {
54 fatalError("Could not create renderer");
55 }
56
57 /* Fill screen with black */
58 SDL_RenderFill(0,0,0,0, NULL);
59
60 /* Enter render loop, waiting for user to quit */
61 done = 0;
62 while(!done) {
63 while (SDL_PollEvent(&event)) {
64 if (event.type == SDL_QUIT) {
65 done = 1;
66 }
67 }
68 render();
69 SDL_Delay(1);
70 }
71
72 /* shutdown SDL */
73 SDL_Quit();
74
75 return 0;
76 }