Type Alias

ResamplingFilter

A pointer to a resampling filter callback function.

Declaration

typealias ResamplingFilter = UnsafeMutableRawPointer

Discussion

You pass a resampling filter callback to a shear function. The resampling filter pointer can point to a structure that contains a function, rows of precalculated values, flag settings, and so on. The shear function requires that the structure contains a scale factor.