[Bf-blender-cvs] [8ed7466] master: Remove redundant abs ray/line point functions

[Campbell Barton]

Commit: 8ed746683a312057c1c3e469ab41d7b1f017d257
Author: Campbell Barton
Date:   Thu Apr 14 13:00:53 2016 +1000
Branches: master
https://developer.blender.org/rB8ed746683a312057c1c3e469ab41d7b1f017d257

Remove redundant abs ray/line point functions

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

M	source/blender/blenlib/intern/math_geom.c

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

diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c
index 49b5269..f80099b 100644
--- a/source/blender/blenlib/intern/math_geom.c
+++ b/source/blender/blenlib/intern/math_geom.c
@@ -2512,8 +2512,8 @@ float ray_point_factor_v3_ex(
 {
 	float p_relative[3];
 	sub_v3_v3v3(p_relative, p, ray_origin);
-	const float dot = dot_v3v3(ray_direction, ray_direction);
-	return (fabsf(dot) > epsilon) ? (dot_v3v3(ray_direction, p_relative) / dot) : fallback;
+	const float dot = len_squared_v3(ray_direction);
+	return (dot > epsilon) ? (dot_v3v3(ray_direction, p_relative) / dot) : fallback;
 }
 
 float ray_point_factor_v3(
@@ -2541,8 +2541,8 @@ float line_point_factor_v3_ex(
 	return (dot_v3v3(u, h) / dot_v3v3(u, u));
 #else
 	/* better check for zero */
-	dot = dot_v3v3(u, u);
-	return (fabsf(dot) > epsilon) ? (dot_v3v3(u, h) / dot) : fallback;
+	dot = len_squared_v3(u);
+	return (dot > epsilon) ? (dot_v3v3(u, h) / dot) : fallback;
 #endif
 }
 float line_point_factor_v3(
@@ -2563,8 +2563,8 @@ float line_point_factor_v2_ex(
 	return (dot_v2v2(u, h) / dot_v2v2(u, u));
 #else
 	/* better check for zero */
-	dot = dot_v2v2(u, u);
-	return (fabsf(dot) > epsilon) ? (dot_v2v2(u, h) / dot) : fallback;
+	dot = len_squared_v2(u);
+	return (dot > epsilon) ? (dot_v2v2(u, h) / dot) : fallback;
 #endif
 }