Profile editor for the meshRoad object

credit to Ryan Mounts (RDM)

found originally at http://www.garagegames.com/community/forums/viewthread/105391

Engine/source/math/util/decomposePoly.h

@@ -0,0 +1,81 @@
+#ifndef DECOMPOSE_POLY_H
+#define DECOMPOSE_POLY_H
+
+#include "core/util/tVector.h"
+#include "math/mathTypes.h"
+#include "math/mPoint3.h"
+
+struct twoIndices{
+   U8 i1, i2;
+
+public:
+   twoIndices();
+   twoIndices(U8 a, U8 b);
+   bool operator==(const twoIndices&) const;
+};
+
+inline bool twoIndices::operator==(const twoIndices& _test) const
+{
+   return ((i1 == _test.i1) && (i2 == _test.i2) || (i1 == _test.i2) && (i2 == _test.i1));
+}
+
+
+class decompTri
+{
+private:
+
+   U8 mVertIdx[3];
+
+public:
+
+   decompTri();
+   void setVert(U8 val, U8 idx);
+   U8 getVert(U8 idx);
+   twoIndices getOtherVerts(U8 idx);
+   void orderVerts();
+};
+
+class decompPoly
+{
+private:
+
+   Vector<Point3F>      mVertList;
+   Vector<twoIndices>   mEdgeList;
+   Vector<U8>           mInsideVerts;
+   Vector<decompTri>	   mTris;
+
+   decompTri            mTestTri;
+
+protected:
+
+   void initEdgeList();
+   bool sameSide(Point3F &p1, Point3F &p2, Point3F &l1, Point3F &l2);
+   bool isInside(decompTri &tri, U8 vertIdx);
+   U8 leftmost();
+   U8 rightmost();
+   U8 uppermost();
+   U8 lowermost();
+   twoIndices findEdges(U8 idx, bool &notUnique);
+   decompTri formTriFromEdges(U8 idx1, U8 idx2);
+   twoIndices leftmostInsideVerts(U8 idx1, U8 idx2);
+   twoIndices rightmostInsideVerts(U8 idx1, U8 idx2);
+   twoIndices uppermostInsideVerts(U8 idx1, U8 idx2);
+   twoIndices lowermostInsideVerts(U8 idx1, U8 idx2);
+   void findPointsInside();
+   void addRemoveEdge(U8 idx1, U8 idx2);
+   bool isVertInEdgeList(U8 idx);
+
+public:
+
+   void addVert(Point3F &newVert);
+   Point3F getVert(U8 idx);
+   void newPoly();
+   U8 getNumVerts() { return mVertList.size(); }
+   U32 getNumTris() { return mTris.size(); }
+   U8 getTriIdx(U32 tri, U8 idx);
+   bool checkEdgeLength(F32 len);
+   bool decompose();
+
+};
+
+#endif