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Fix #32625 Zero area-sized faces caused jittered part. distrib. to crash

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When appling a particle system to a face whose area size is zero,
the jitter distribution failed. fmod() produces a NaN value in this
case. This commit simply checks if the jitter offset (I guess that is
"jitoff" means) and only call psys_uv_to_w() if it's a real floating
point number.
This commit is contained in:
Konrad Kleine
2012-09-23 17:50:51 +00:00
parent edd11c0829
commit 60a5e05a4d
1 changed files with 4 additions and 2 deletions
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6
source/blender/blenkernel/intern/particle_system.c
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@@ -797,8 +797,10 @@ static void distribute_threads_exec(ParticleThread *thread, ParticleData *pa, Ch
}
else {
ctx->jitoff[i] = fmod(ctx->jitoff[i],(float)ctx->jitlevel);
psys_uv_to_w(ctx->jit[2*(int)ctx->jitoff[i]], ctx->jit[2*(int)ctx->jitoff[i]+1], mface->v4, pa->fuv);
ctx->jitoff[i]++;
if (!isnan(ctx->jitoff[i])) {
psys_uv_to_w(ctx->jit[2*(int)ctx->jitoff[i]], ctx->jit[2*(int)ctx->jitoff[i]+1], mface->v4, pa->fuv);
ctx->jitoff[i]++;
}
}
break;
case PART_DISTR_RAND: