From fbc743f3324b63c1b2c6ab0fe2e27fa6b11721dc Mon Sep 17 00:00:00 2001
From: Jens Ole Wund <bjornmose@gmx.net>
Date: Thu, 27 Dec 2007 22:48:30 +0000
Subject: [PATCH] fix .. hum not really a bug but waste of CPU remove 6
 multiplications and one square root in core spring calculation .. called for
 every solver step try

---
 source/blender/blenkernel/intern/softbody.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/source/blender/blenkernel/intern/softbody.c b/source/blender/blenkernel/intern/softbody.c
index bd9d1cb75ca..fdc03a88230 100644
--- a/source/blender/blenkernel/intern/softbody.c
+++ b/source/blender/blenkernel/intern/softbody.c
@@ -2307,9 +2307,8 @@ static void softbody_calc_forces(Object *ob, float forcetime, float timenow)
 						}
 
 						if (( (sb->totpoint-a) == bs->v1) ){ 
-							actspringlen= VecLenf( (bproot+bs->v2)->pos, bp->pos);
 							VecSubf(sd,(bproot+bs->v2)->pos, bp->pos);
-							Normalize(sd);
+							actspringlen=Normalize(sd);
 							
 							/* friction stuff V1 */
 							VecSubf(velgoal,bp->vec,(bproot+bs->v2)->vec);
@@ -2330,9 +2329,8 @@ static void softbody_calc_forces(Object *ob, float forcetime, float timenow)
 						}
 						
 						if (( (sb->totpoint-a) == bs->v2) ){ 
-							actspringlen= VecLenf( (bproot+bs->v1)->pos, bp->pos);
 							VecSubf(sd,bp->pos,(bproot+bs->v1)->pos);
-							Normalize(sd);
+							actspringlen=Normalize(sd);
 							
 							/* friction stuff V2 */
 							VecSubf(velgoal,bp->vec,(bproot+bs->v1)->vec);