Dear Group
I remember in the past coming across a CAL file (not picture.cal) for mapping 2D images onto 3 and 4 sided polygons. Does anyone know which CAl file this is? I have been unable to find it.
Thanks
Marcus
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Hi Marcus,
I believe what you're looking for is defined in the main initialization file, rayinit.cal:
{ Local (u,v) coordinates for planar surfaces }
crosslen`P = Nx*Nx + Ny*Ny;
{ U is distance from projected Z-axis }
U = if( crosslen`P - FTINY,
(Py*Nx - Px*Ny)/crosslen`P,
Px);
{ V is defined so that N = U x V }
V = if( crosslen`P - FTINY,
Pz - Nz*(Px*Nx + Py*Ny)/crosslen`P,
Py);
As such, you don't need to specify this file to use the U and V variables -- just put "." as a placeholder where the file would normally go.
-Greg
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From: "Marcus Jacobs" <marcdevon@hotmail.com>
Date: December 14, 2003 8:00:02 AM PST
Dear Group
I remember in the past coming across a CAL file (not picture.cal) for mapping 2D images onto 3 and 4 sided polygons. Does anyone know which CAl file this is? I have been unable to find it.
Thanks
Marcus