This class is mainly intended for use internally by DirectionalLightShadowCSM for calculating subfrustums.
Creates a new CSMFrustum.
Contains 8 points forming the frustum.
Sets frustum points from projection matrix.
target.length <= breaks.length.true, uses fit to scene else fit to cascade method.Splits this frustum into subfrustums.
Multiplies each frustum point by a matrix and write the results to the target.
For more info on how to obtain the source code of this module see this page.