C++ (Cpp) WorldToVolume Examples

Example #1

File: homogeneous.cpp Project: BlueBrain/pbrt

bool HomogeneousVolumeDensity::SampleDirection(const Point &p, const Vector& wi,
        Vector& wo, float* pdf, RNG &rng) const {
    const Point Pobj = WorldToVolume(p);
    if(extent.Inside(Pobj)) {
        wo = SampleHG(wi, g, rng.RandomFloat(), rng.RandomFloat());
        *pdf = PhaseHG(wi, wo, g);
        return true;
    } else {
        return false;
    }
}

Example #2

File: volumegrid.cpp Project: BackupTheBerlios/rendertoolbox-svn

	bool IntersectP(const Ray &r, float *t0, float *t1) const {
		Ray ray = WorldToVolume(r);
		return extent.IntersectP(ray, t0, t1);
	}

Example #3

File: homogeneous.cpp Project: EiffelOberon/pbrt-v1

	float p(const Point &p, const Vector &wi, const Vector &wo) const {
		if (!extent.Inside(WorldToVolume(p))) return 0.;
		return PhaseHG(wi, wo, g);
	}

Example #4

File: homogeneous.cpp Project: EiffelOberon/pbrt-v1

	Spectrum Lve(const Point &p, const Vector &) const {
		return extent.Inside(WorldToVolume(p)) ? le : 0.;
	}

Example #5

File: homogeneous.cpp Project: EiffelOberon/pbrt-v1

	Spectrum sigma_t(const Point &p, const Vector &) const {
		return extent.Inside(WorldToVolume(p)) ? (sig_a + sig_s) : 0.;
	}

Example #6

File: homogeneous.cpp Project: EiffelOberon/pbrt-v1

	Spectrum sigma_s(const Point &p, const Vector &) const {
		return extent.Inside(WorldToVolume(p)) ? sig_s : 0.;
	}