[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [13027] trunk/blender/source/blender/ blenkernel/intern/softbody.c: fix ..

[Jens Ole Wund (bjornmose)]

Revision: 13027
          http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=13027
Author:   bjornmose
Date:     2007-12-27 23:48:30 +0100 (Thu, 27 Dec 2007)

Log Message:
-----------
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 

Modified Paths:
--------------
    trunk/blender/source/blender/blenkernel/intern/softbody.c

Modified: trunk/blender/source/blender/blenkernel/intern/softbody.c
===================================================================
--- trunk/blender/source/blender/blenkernel/intern/softbody.c	2007-12-27 22:16:54 UTC (rev 13026)
+++ trunk/blender/source/blender/blenkernel/intern/softbody.c	2007-12-27 22:48:30 UTC (rev 13027)
@@ -2307,9 +2307,8 @@
 						}
 
 						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 @@
 						}
 						
 						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);