diff options
Diffstat (limited to 'progs/samples/star.c')
| -rw-r--r-- | progs/samples/star.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/progs/samples/star.c b/progs/samples/star.c index 570c3e19f9..2cf470e2a2 100644 --- a/progs/samples/star.c +++ b/progs/samples/star.c @@ -45,7 +45,7 @@ enum { #define MAXSTARS 400 #define MAXPOS 10000 -#define MAXWARP 10 +#define MAXWARP 500 #define MAXANGLES 6000 @@ -115,6 +115,13 @@ void MoveStars(void) { float offset; GLint n; + static double t0 = -1.; + double t, dt; + t = glutGet(GLUT_ELAPSED_TIME) / 1000.; + if (t0 < 0.) + t0 = t; + dt = 85.*(t - t0); + t0 = t; offset = speed * 60.0; @@ -122,10 +129,10 @@ void MoveStars(void) stars[n].x[1] = stars[n].x[0]; stars[n].y[1] = stars[n].y[0]; stars[n].z[1] = stars[n].z[0]; - stars[n].x[0] += stars[n].offsetX; - stars[n].y[0] += stars[n].offsetY; - stars[n].z[0] -= offset; - stars[n].rotation += stars[n].offsetR; + stars[n].x[0] += stars[n].offsetX*dt; + stars[n].y[0] += stars[n].offsetY*dt; + stars[n].z[0] -= offset*dt; + stars[n].rotation += stars[n].offsetR*dt; if (stars[n].rotation > MAXANGLES) { stars[n].rotation = 0.0; } @@ -296,6 +303,10 @@ static GLenum Args(int argc, char **argv) return GL_TRUE; } +#if !defined(GLUTCALLBACK) +#define GLUTCALLBACK +#endif + void GLUTCALLBACK glut_post_redisplay_p(void) { glutPostRedisplay(); |