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root/radiance/ray/src/gen/rev.cal
Revision: 2.2
Committed: Thu Jul 9 13:06:20 1998 UTC (25 years, 8 months ago) by gwlarson
Branch: MAIN
Changes since 2.1: +3 -3 lines
Log Message:
fixed variable ordering

File Contents

# User Rev Content
1 greg 1.1 { SCCSid "$SunId$ LBL" }
2    
3     {
4     Phong normal interpolation for surfaces of revolution about z.
5    
6     11/7/88
7    
8     (A1,A2) = (Mz,Bz)
9     (A3,A4) = (Mr,Br)
10     }
11    
12 gwlarson 2.2 rev_dr = rev_rad*A3 + A4;
13     rev_rad = sqrt(Px*Px + Py*Py);
14    
15 greg 1.1 rev_dx = rev_dr * Px/rev_rad;
16     rev_dy = rev_dr * Py/rev_rad;
17     rev_dz = Pz*A1 + A2;