float3 Capsule::RandomPointInside(LCG &rng) const
{
assume(IsFinite());
OBB obb = MinimalEnclosingOBB();
for(int i = 0; i < 1000; ++i)
{
float3 pt = obb.RandomPointInside(rng);
if (Contains(pt))
return pt;
}
assume(false && "Warning: Capsule::RandomPointInside ran out of iterations to perform!");
return Center(); // Just return some point that is known to be inside.
}
float3 Frustum::UniformRandomPointInside(LCG &rng) const
{
if (type == OrthographicFrustum)
return FastRandomPointInside(rng);
else
{
OBB o = MinimalEnclosingOBB();
for(int numTries = 0; numTries < 1000; ++numTries)
{
float3 pt = o.RandomPointInside(rng);
if (Contains(pt))
return pt;
}
LOGW("Rejection sampling failed in Frustum::UniformRandomPointInside! Producing a non-uniformly distributed point inside the frustum!");
return FastRandomPointInside(rng);
}
}
float3 Capsule::UniformPointPerhapsInside(float l, float x, float y) const
{
return MinimalEnclosingOBB().PointInside(l, x, y);
}