PeachDrawing
PeachDrawing.DepthPlane
DepthPlane(double, double, double, double, double, double) Constructor
How deep a plane is (its z over its divisor, larger being nearer the viewer) at each point of it, from the same 4x4 matrix as its Homography: the z of the plane z = 0 after the matrix, and the divisor the map shares.
public DepthPlane(double za, double zb, double zc, double wa, double wb, double wc);