[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [36415] trunk/blender/source/blender/ modifiers/intern/MOD_warp.c: warp modifier, using negative strength inverts the transformation matrix but the location it gave wasnt useful when rotation was used too , just negate the translation.

[Campbell Barton]

Revision: 36415
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=36415
Author:   campbellbarton
Date:     2011-05-01 16:07:18 +0000 (Sun, 01 May 2011)
Log Message:
-----------
warp modifier, using negative strength inverts the transformation matrix but the location it gave wasnt useful when rotation was used too, just negate the translation.

Modified Paths:
--------------
    trunk/blender/source/blender/modifiers/intern/MOD_warp.c

Modified: trunk/blender/source/blender/modifiers/intern/MOD_warp.c
===================================================================
--- trunk/blender/source/blender/modifiers/intern/MOD_warp.c	2011-05-01 15:16:59 UTC (rev 36414)
+++ trunk/blender/source/blender/modifiers/intern/MOD_warp.c	2011-05-01 16:07:18 UTC (rev 36415)
@@ -198,8 +198,14 @@
 	unit_m4(mat_unit);
 
 	if(strength < 0.0f) {
+		float loc[3];
 		strength = -strength;
+
+		/* inverted location is not useful, just use the negative */
+		copy_v3_v3(loc, mat_final[3]);
 		invert_m4(mat_final);
+		negate_v3_v3(mat_final[3], loc);
+
 	}
 	weight= strength;