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root/radiance/ray/src/cal/cal/printwarp.cal
Revision: 1.1
Committed: Sat Feb 22 02:07:21 2003 UTC (21 years, 1 month ago) by greg
Branch: MAIN
CVS Tags: rad5R2, rad4R2P2, rad5R0, rad5R1, rad3R7P2, rad3R7P1, rad4R2, rad4R1, rad4R0, rad3R5, rad3R6, rad3R6P1, rad3R8, rad3R9, rad4R2P1
Log Message:
Changes and check-in for 3.5 release
Includes new source files and modifications not recorded for many years
See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release

File Contents

# Content
1 {
2 Warp response function for printing to avoid
3 contrast loss at low end.
4
5 9/12/97 GWL
6 }
7 PrintPivot: .05; { print pivot point }
8 OrigPivot: .025; { original pivot point }
9
10 map(v) = if( v - OrigPivot,
11 (v-OrigPivot)*((1-PrintPivot)/(1-OrigPivot)) + PrintPivot,
12 v*(PrintPivot/OrigPivot) );
13
14 ro = map(ri(1));
15 go = map(gi(1));
16 bo = map(bi(1));