ludus::foundation::math::LinearlyTransformedCosinePolygon¶

Struct

An LTC restricted to a convex polygon, prepared for integration and sampling at one shading point.

Produced by TryPrepareLinearlyTransformedCosinePolygon; treat the fields as read-only.

Declared in modules/foundation/math/include/ludus/foundation/math/linearly_transformed_cosine.hpp

#include <ludus/foundation/math/linearly_transformed_cosine.hpp>

struct ludus::foundation::math::LinearlyTransformedCosinePolygon final

Fields¶

TransformedPolygon¶

ProjectedSolidAnglePolygon ludus::foundation::math::LinearlyTransformedCosinePolygon::TransformedPolygon {}

The polygon transformed by M^-1, clipped to z >= 0 and prepared for projected solid angle sampling. Its ProjectedSolidAngle is pi times the LTC's integral over the polygon (Heitz et al. 2016, Equation 3); zero means the clip is empty and the technique must be disabled (Peters 2021, section 4.1).

Related types: ProjectedSolidAnglePolygon

Declared in modules/foundation/math/include/ludus/foundation/math/linearly_transformed_cosine.hpp

Distribution¶

LinearlyTransformedCosine ludus::foundation::math::LinearlyTransformedCosinePolygon::Distribution {}

The distribution the polygon was prepared with.

Related types: LinearlyTransformedCosine

Declared in modules/foundation/math/include/ludus/foundation/math/linearly_transformed_cosine.hpp