[ViewVC] Diff of: Development/ray/src/px/x11image.c

Comparing ray/src/px/x11image.c (file contents):
Revision 2.33 by greg, Thu Nov 4 12:04:55 1993 UTC vs.
Revision 2.34 by greg, Mon Nov 15 10:55:33 1993 UTC

+        case '@':                               /* adaptation level */
+                if (avgbox(cval) == -1)
+                        return(-1);
-<
+                comp = com=='@'
-<
+                ? 106./pow(1.219+pow(luminance(cval)/exposure,.4),2.5)/exposure
-<
+                : .5/bright(cval) ;
->
+                comp = bright(cval);
->
+                if (comp < 1e-20) {
->
+                        XBell(thedisplay, 0);
->
+                        return(-1);
->
+                }
->
+                if (com == '@')
->
+                        comp = 106./exposure/
->
+                        pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5);
->
+                else
->
+                        comp = .5/comp;
+                comp = log(comp)/.69315 - scale;
+                n = comp < 0 ? comp-.5 : comp+.5 ;      /* round */
+                if (n == 0)

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+Changed lines (new)