From 383b4c07274cba538efac5571e7c519ff45f3e97 Mon Sep 17 00:00:00 2001
From: Howard Trickey <howard.trickey@gmail.com>
Date: Sun, 19 Jul 2020 14:16:39 -0400
Subject: Added floating filters to the initial plane-side tests in tri-tri
 intersect.

Needed an "abs" function for double3, so added it to all of the
float/double/mpq 2/3 types.
---
 source/blender/blenlib/BLI_mpq2.hh | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'source/blender/blenlib/BLI_mpq2.hh')

diff --git a/source/blender/blenlib/BLI_mpq2.hh b/source/blender/blenlib/BLI_mpq2.hh
index fc4702e4c01..e585c1d5a0a 100644
--- a/source/blender/blenlib/BLI_mpq2.hh
+++ b/source/blender/blenlib/BLI_mpq2.hh
@@ -131,6 +131,13 @@ struct mpq2 {
     return a * (1 - t) + b * t;
   }
 
+  static mpq2 abs(const mpq2 &a)
+  {
+    mpq_class abs_x = (a.x >= 0) ? a.x : -a.x;
+    mpq_class abs_y = (a.y >= 0) ? a.y : -a.y;
+    return mpq2(abs_x, abs_y);
+  }
+
   static mpq_class distance(const mpq2 &a, const mpq2 &b)
   {
     return (a - b).length();
-- 
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