Returns the threshold that will be used by certain methods such as rank(). * * See the documentation of setThreshold(const RealScalar&).

\brief %Transpose of the Householder sequence. */

\returns an expression of P H P^-1 */

\returns the unique coefficient of a 1x1 expression */

Computes the approximate integral of an SG over the entire sphere. The error vs. the non-approximate version decreases as sharpeness increases.

Checks to see if a ray intersects with the area light

-------------------------------------------------------------------------------------- Return the BPP for a particular format ------------------------

Computes the radiance reflected off a surface towards the eye given the differential irradiance from a given direction

Returns an approximation of the clamped cosine lobe represented as an SG

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Computes lightmap sample points and gutter texels

Generates hammersley using base 1 and 2

Generate uniform spherical gaussians on the sphere or hemisphere

Gets the last written timestamp of the file

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Check whether the mesh contains normal vectors

Check whether the mesh contains positions. Provided no special scene flags are set (such as #AI_SCENE_FLAGS_ANIM_SKELETON_ONLY), this will always be t

Check whether the mesh contains tangent and bitangent vectors It is not possible that it contains tangents and no bitangents (or the other way round).

Check whether the mesh contains a texture coordinate set \param pIndex Index of the texture coordinates set