ray/lib/fisheye.cal

{
        Calculate coordinates for a 180 degree fisheye lens.
        Assume view direction is (0,1,0), view up (0,0,1), (1,0,0) right.

        4/30/90
}

fish_u = .5 + Dx/fish_Rxz * fish_Ry;
fish_v = .5 + Dz/fish_Rxz * fish_Ry;

fish_Rxz = sqrt(Dx*Dx + Dz*Dz);
fish_Ry = acos(Dy) / PI;
Revision:	1.2
Committed:	Tue Mar 18 17:30:17 2003 UTC (22 years, 7 months ago) by greg
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.1:	+0 -0 lines
State:	*FILE REMOVED*
Log Message:	Decided to move ray/lib directory into non-CVS distribution
#	Content
1	{
2	Calculate coordinates for a 180 degree fisheye lens.
3	Assume view direction is (0,1,0), view up (0,0,1), (1,0,0) right.
4
5	4/30/90
6	}
7
8	fish_u = .5 + Dx/fish_Rxz * fish_Ry;
9	fish_v = .5 + Dz/fish_Rxz * fish_Ry;
10
11	fish_Rxz = sqrt(DxDx + DzDz);
12	fish_Ry = acos(Dy) / PI;