From 2a42d7f73d2e301d702f256f17b46ce84ec0fdae Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Tue, 28 Jun 2011 11:30:17 +0200
Subject: Add divergence to gradient

---
 src/post-refinement.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/post-refinement.c b/src/post-refinement.c
index 449e716f..46e320e6 100644
--- a/src/post-refinement.c
+++ b/src/post-refinement.c
@@ -105,9 +105,9 @@ double gradient(struct image *image, int k, Reflection *refl, double r)
 	if ( (clamp_low == 0) && (clamp_high == 0) ) {
 		tt = (ttlow+tthigh)/2.0;
 	} else if ( clamp_high == 0 ) {
-		tt = tthigh;
+		tt = tthigh + image->div;
 	} else if ( clamp_low == 0 ) {
-		tt = ttlow;
+		tt = ttlow - image->div;
 	} else {
 		tt = 0.0;
 		/* Gradient should come out as zero in this case */
-- 
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