Function UniformSampleSphere

src/luxrays/utils/mc.cpp:83–90

}

Vector UniformSampleSphere(const float u1, const float u2) {
	const float z = 1.f - 2.f * u1;
	const float r = sqrtf(Max(0.f, 1.f - z * z));
	const float phi = 2.f * M_PI * u2;
	const float x = r * cosf(phi);
	const float y = r * sinf(phi);
	return Vector(x, y, z);
}

float UniformSpherePdf() {
	return 1.f / (4.f * M_PI);