Index: trunk/code/qcommon/q_math.c
===================================================================
--- trunk/code/qcommon/q_math.c	(revision 1432)
+++ trunk/code/qcommon/q_math.c	(working copy)
@@ -439,27 +439,10 @@
 	VectorCopy( in[2], out[2] );
 }
 
-void ProjectPointOnPlane( vec3_t dst, const vec3_t p, const vec3_t normal )
+void ProjectPointOnPlane( vec3_t dst, const vec3_t point, const vec3_t normal )
 {
-	float d;
-	vec3_t n;
-	float inv_denom;
-
-	inv_denom =  DotProduct( normal, normal );
-#ifndef Q3_VM
-	assert( Q_fabs(inv_denom) != 0.0f ); // zero vectors get here
-#endif
-	inv_denom = 1.0f / inv_denom;
-
-	d = DotProduct( normal, p ) * inv_denom;
-
-	n[0] = normal[0] * inv_denom;
-	n[1] = normal[1] * inv_denom;
-	n[2] = normal[2] * inv_denom;
-
-	dst[0] = p[0] - d * n[0];
-	dst[1] = p[1] - d * n[1];
-	dst[2] = p[2] - d * n[2];
+	float d = -DotProduct( point, normal );
+	VectorMA( point, d, normal, dst );
 }
 
 /*
Index: trunk/code/qcommon/q_shared.h
===================================================================
--- trunk/code/qcommon/q_shared.h	(revision 1432)
+++ trunk/code/qcommon/q_shared.h	(working copy)
@@ -588,7 +588,7 @@
 float AngleDelta ( float angle1, float angle2 );
 
 qboolean PlaneFromPoints( vec4_t plane, const vec3_t a, const vec3_t b, const vec3_t c );
-void ProjectPointOnPlane( vec3_t dst, const vec3_t p, const vec3_t normal );
+void ProjectPointOnPlane( vec3_t dst, const vec3_t point, const vec3_t normal );
 void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees );
 void RotateAroundDirection( vec3_t axis[3], float yaw );
 void MakeNormalVectors( const vec3_t forward, vec3_t right, vec3_t up );