Update of /cvsroot/plib/plib/src/sg
In directory usw-pr-cvs1:/tmp/cvs-serv7722
Modified Files:
sg.cxx
Log Message:
Minor optimization for sgSetCoord to multiply by the inverse instead of division
Index: sg.cxx
===================================================================
RCS file: /cvsroot/plib/plib/src/sg/sg.cxx,v
retrieving revision 1.28
retrieving revision 1.29
diff -u -d -r1.28 -r1.29
--- sg.cxx 25 Jan 2002 16:28:00 -0000 1.28
+++ sg.cxx 12 Apr 2002 14:49:26 -0000 1.29
@@ -900,10 +900,11 @@
}
else
{
- SGfloat sr = _sgClampToUnity ( -mat[0][2] / cp ) ;
- SGfloat cr = _sgClampToUnity ( mat[2][2] / cp ) ;
- SGfloat sh = _sgClampToUnity ( -mat[1][0] / cp ) ;
- SGfloat ch = _sgClampToUnity ( mat[1][1] / cp ) ;
+ cp = SG_ONE / cp ;
+ SGfloat sr = _sgClampToUnity ( -mat[0][2] * cp ) ;
+ SGfloat cr = _sgClampToUnity ( mat[2][2] * cp ) ;
+ SGfloat sh = _sgClampToUnity ( -mat[1][0] * cp ) ;
+ SGfloat ch = _sgClampToUnity ( mat[1][1] * cp ) ;
if ( (sh == SG_ZERO && ch == SG_ZERO) || (sr == SG_ZERO && cr == SG_ZERO) )
{
|
