From 6bb4ab0563af81a680192f2ee1c0c4f81aabcdfb Mon Sep 17 00:00:00 2001
From: Teravus Ovares <teravus@gmail.com>
Date: Fri, 9 May 2008 02:00:55 +0000
Subject: [PATCH] * Applying Dahlia's Triangular hole in a cube peg patch. 
 Fixes the hollow orientation in a cube in the meshmerizer.  Thanks Dahlia! *
 See mantis 0001203 for more details!

---
 CONTRIBUTORS.txt                              |  1 +
 OpenSim/Region/Physics/Meshing/Meshmerizer.cs | 24 ++++++++++++++++---
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index b7d9fe8bad..6441412f57 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -55,6 +55,7 @@ Patches
 * John R Sohn(XenReborn)
 * Xantor
 * YZh
+* Dahlia
 
 
 LSL Devs
diff --git a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
index db91028dd3..9c6dff443c 100644
--- a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
+++ b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
@@ -331,11 +331,29 @@ namespace OpenSim.Region.Physics.Meshing
             if (hshape == HollowShape.Triangle)
             {
                 float hollowFactorF = (float)fhollowFactor / (float)50000;
-                Vertex IMM = new Vertex(-0.25f * hollowFactorF, -0.45f * hollowFactorF, 0.0f);
-                Vertex IPM = new Vertex(+0.5f * hollowFactorF, +0f * hollowFactorF, 0.0f);
-                Vertex IPP = new Vertex(-0.25f * hollowFactorF, +0.45f * hollowFactorF, 0.0f);
+                Vertex IMM;
+                Vertex IPM;
+                Vertex IPP;
 
+                if (pshape == ProfileShape.Square)
+                {
+                    // corner points are at 345, 105, and 225 degrees for the triangle within a box
 
+                    //IMM = new Vertex(((float)Math.Cos(345.0 * DEG_TO_RAD) * 0.5f) * hollowFactorF, ((float)Math.Sin(345.0 * DEG_TO_RAD) * 0.5f) * hollowFactorF, 0.0f);
+                    //IPM = new Vertex(((float)Math.Cos(105.0 * DEG_TO_RAD) * 0.5f) * hollowFactorF, ((float)Math.Sin(105.0 * DEG_TO_RAD) * 0.5f) * hollowFactorF, 0.0f);
+                    //IPP = new Vertex(((float)Math.Cos(225.0 * DEG_TO_RAD) * 0.5f) * hollowFactorF, ((float)Math.Sin(225.0 * DEG_TO_RAD) * 0.5f) * hollowFactorF, 0.0f);
+
+                    // hard coded here for speed, the equations are in the commented out lines above
+                    IMM = new Vertex(0.48296f * hollowFactorF, -0.12941f * hollowFactorF, 0.0f);
+                    IPM = new Vertex(-0.12941f * hollowFactorF, 0.48296f * hollowFactorF, 0.0f);
+                    IPP = new Vertex(-0.35355f * hollowFactorF, -0.35355f * hollowFactorF, 0.0f);
+                }
+                else
+                {
+                    IMM = new Vertex(-0.25f * hollowFactorF, -0.45f * hollowFactorF, 0.0f);
+                    IPM = new Vertex(+0.5f * hollowFactorF, +0f * hollowFactorF, 0.0f);
+                    IPP = new Vertex(-0.25f * hollowFactorF, +0.45f * hollowFactorF, 0.0f);
+                }
 
                 holeHull = new SimpleHull();