1 files changed, 83 insertions, 0 deletions
diff --git a/OpenSim/Region/Physics/Meshing/Extruder.cs b/OpenSim/Region/Physics/Meshing/Extruder.cs
new file mode 100644
index 0000000..63d727f
--- /dev/null
+++ b/OpenSim/Region/Physics/Meshing/Extruder.cs
@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+namespace OpenSim.Region.Physics.Meshing
+{
+    class Extruder
+    {
+        public float startParameter;
+        public float stopParameter;
+        public Manager.PhysicsVector size;
+        public Mesh Extrude(Mesh m)
+        {
+            // Currently only works for iSteps=1;
+            Mesh result = new Mesh();
+            Mesh workingPlus  = m.Clone();
+            Mesh workingMinus = m.Clone();
+            foreach (Vertex v in workingPlus.vertices)
+            {
+                if (v == null)
+                    continue;
+                v.Z = +.5f;
+                v.X *= size.X;
+                v.Y *= size.Y;
+                v.Z *= size.Z;
+            }
+            foreach (Vertex v in workingMinus.vertices)
+            {
+                if (v == null)
+                    continue;
+                v.Z = -.5f;
+                v.X *= size.X;
+                v.Y *= size.Y;
+                v.Z *= size.Z;
+            }
+            foreach (Triangle t in workingMinus.triangles)
+            {
+                t.invertNormal();
+            }
+            result.Append(workingMinus);
+            result.Append(workingPlus);
+            int iLastNull = 0;
+            for (int i = 0; i < workingPlus.vertices.Count; i++)
+            {
+                int iNext = (i + 1);
+                
+                if (workingPlus.vertices[i] == null) // Can't make a simplex here
+                {
+                    iLastNull = i+1;
+                    continue;
+                }
+                if (i == workingPlus.vertices.Count-1) // End of list
+                {
+                    iNext = iLastNull;
+                }
+                if (workingPlus.vertices[iNext] == null) // Null means wrap to begin of last segment
+                {
+                    iNext = iLastNull;
+                }
+                Triangle tSide;
+                tSide = new Triangle(workingPlus.vertices[i], workingMinus.vertices[i], workingPlus.vertices[iNext]);
+                result.Add(tSide);
+                tSide = new Triangle(workingPlus.vertices[iNext], workingMinus.vertices[i], workingMinus.vertices[iNext]);
+                result.Add(tSide);
+            }
+            return result;
+        }
+    }
+}

diff --git a/OpenSim/Region/Physics/Meshing/Extruder.cs b/OpenSim/Region/Physics/Meshing/Extruder.cs new file mode 100644 index 0000000..63d727f --- /dev/null +++ b/OpenSim/Region/Physics/Meshing/Extruder.cs
@@ -0,0 +1,83 @@
	1	using System;
	2	using System.Collections.Generic;
	3	using System.Text;
	4
	5	namespace OpenSim.Region.Physics.Meshing
	6	{
	7	class Extruder
	8	{
	9	public float startParameter;
	10	public float stopParameter;
	11	public Manager.PhysicsVector size;
	12
	13	public Mesh Extrude(Mesh m)
	14	{
	15	// Currently only works for iSteps=1;
	16	Mesh result = new Mesh();
	17
	18	Mesh workingPlus = m.Clone();
	19	Mesh workingMinus = m.Clone();
	20
	21	foreach (Vertex v in workingPlus.vertices)
	22	{
	23	if (v == null)
	24	continue;
	25
	26	v.Z = +.5f;
	27	v.X *= size.X;
	28	v.Y *= size.Y;
	29	v.Z *= size.Z;
	30	}
	31
	32	foreach (Vertex v in workingMinus.vertices)
	33	{
	34	if (v == null)
	35	continue;
	36
	37	v.Z = -.5f;
	38	v.X *= size.X;
	39	v.Y *= size.Y;
	40	v.Z *= size.Z;
	41	}
	42
	43	foreach (Triangle t in workingMinus.triangles)
	44	{
	45	t.invertNormal();
	46	}
	47
	48	result.Append(workingMinus);
	49	result.Append(workingPlus);
	50
	51	int iLastNull = 0;
	52	for (int i = 0; i < workingPlus.vertices.Count; i++)
	53	{
	54	int iNext = (i + 1);
	55
	56	if (workingPlus.vertices[i] == null) // Can't make a simplex here
	57	{
	58	iLastNull = i+1;
	59	continue;
	60	}
	61
	62	if (i == workingPlus.vertices.Count-1) // End of list
	63	{
	64	iNext = iLastNull;
	65	}
	66
	67	if (workingPlus.vertices[iNext] == null) // Null means wrap to begin of last segment
	68	{
	69	iNext = iLastNull;
	70	}
	71
	72	Triangle tSide;
	73	tSide = new Triangle(workingPlus.vertices[i], workingMinus.vertices[i], workingPlus.vertices[iNext]);
	74	result.Add(tSide);
	75
	76	tSide = new Triangle(workingPlus.vertices[iNext], workingMinus.vertices[i], workingMinus.vertices[iNext]);
	77	result.Add(tSide);
	78	}
	79
	80	return result;
	81	}
	82	}
	83	}