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| author | Brian Paul <brian.paul@tungstengraphics.com> | 2005-01-09 17:37:50 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2005-01-09 17:37:50 +0000 |
| commit | 92eddb0fd404624ca198f19e4088927701eec7f5 (patch) | |
| tree | dd93d51d271e6bd43d09af9e8b0f3a98a640a8d2 /progs/demos/terrain.c | |
| parent | 516f9bc6e306fe7820649ead125d557b46ca8419 (diff) | |
| download | external_mesa3d-92eddb0fd404624ca198f19e4088927701eec7f5.zip external_mesa3d-92eddb0fd404624ca198f19e4088927701eec7f5.tar.gz external_mesa3d-92eddb0fd404624ca198f19e4088927701eec7f5.tar.bz2 | |
better animate rate (Marcelo Magallon)
Diffstat (limited to 'progs/demos/terrain.c')
| -rw-r--r-- | progs/demos/terrain.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/progs/demos/terrain.c b/progs/demos/terrain.c index 9063c93..990c7b8 100644 --- a/progs/demos/terrain.c +++ b/progs/demos/terrain.c @@ -69,7 +69,7 @@ static int scrheight = HEIGHT; static float obs[3] = { OBSSTARTX, heightMnt * 1.3, OBSSTARTY }; static float dir[3], v1[2], v2[2]; -static float v = 15.0; +static float v = 900.0; static float alpha = 75.0; static float beta = 90.0; @@ -77,6 +77,12 @@ static void calcposobs(void) { float alpha1, alpha2; + static double t0 = -1.; + double dt, t = glutGet(GLUT_ELAPSED_TIME) / 1000.0; + if (t0 < 0.0) + t0 = t; + dt = t - t0; + t0 = t; dir[0] = sin(alpha * M_PI / 180.0); dir[2] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0); @@ -97,9 +103,9 @@ calcposobs(void) v2[0] = sin(alpha2 * M_PI / 180.0); v2[1] = cos(alpha2 * M_PI / 180.0); - obs[0] += v * dir[0]; - obs[1] += v * dir[1]; - obs[2] += v * dir[2]; + obs[0] += v * dir[0] * dt; + obs[1] += v * dir[1] * dt; + obs[2] += v * dir[2] * dt; if (obs[1] < 0.0) obs[1] = 0.0; @@ -432,10 +438,10 @@ key(unsigned char k, int x, int y) exit(0); break; case 'a': - v += 0.5; + v += 50.; break; case 'z': - v -= 0.5; + v -= 50.; break; case 'p': if (poutline) { |