[Bf-blender-cvs] [4376dfb] alembic: Fix for Drag force fields: was using inverted velocity.

[Lukas Tönne]

Commit: 4376dfbf212077482944dab5223aa5c0082501b0
Author: Lukas Tönne
Date:   Thu May 14 12:17:14 2015 +0200
Branches: alembic
https://developer.blender.org/rB4376dfbf212077482944dab5223aa5c0082501b0

Fix for Drag force fields: was using inverted velocity.

===================================================================

M	source/blender/blenkernel/intern/cache_library.c

===================================================================

diff --git a/source/blender/blenkernel/intern/cache_library.c b/source/blender/blenkernel/intern/cache_library.c
index 5ef771e..08eb0a8 100644
--- a/source/blender/blenkernel/intern/cache_library.c
+++ b/source/blender/blenkernel/intern/cache_library.c
@@ -955,7 +955,7 @@ static bool cache_effector_drag(CacheEffector *eff, CacheEffectorInstance *inst,
 	/* relative velocity */
 	sub_v3_v3v3(vel, point->v, vel);
 	
-	mul_v3_v3fl(result->f, vel, eff->strength * falloff);
+	mul_v3_v3fl(result->f, vel, -eff->strength * falloff);
 	
 	return true;
 }