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use libc rand in drawlines

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This commit is contained in:
K. Lange 2018-05-09 19:43:11 +09:00
parent fc37b60272
commit 67b8e2e295
1 changed files with 3 additions and 14 deletions
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17
apps/drawlines.c
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@ -26,23 +26,10 @@ static yutani_window_t * wina;
static gfx_context_t * ctx;
static int should_exit = 0;
uint32_t __attribute__ ((pure)) krand(void) {
static uint32_t x = 123456789;
static uint32_t y = 362436069;
static uint32_t z = 521288629;
static uint32_t w = 88675123;
uint32_t t;
t = x ^ (x << 11);
x = y; y = z; z = w;
return w = w ^ (w >> 19) ^ t ^ (t >> 8);
}
void * draw_thread(void * garbage) {
(void)garbage;
while (!should_exit) {
draw_line(ctx, krand() % width, krand() % width, krand() % height, krand() % height, rgb(krand() % 255,krand() % 255,krand() % 255));
draw_line(ctx, rand() % width, rand() % width, rand() % height, rand() % height, rgb(rand() % 255,rand() % 255,rand() % 255));
yutani_flip(yctx, wina);
usleep(16666);
}
@ -56,6 +43,8 @@ int main (int argc, char ** argv) {
width = 500;
height = 500;
srand(time(NULL));
TRACE("Starting drawlines.");
yctx = yutani_init();
TRACE("Creating a window.");