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engines/hpl1/engine/libraries/newton/physics/dgMeshEffectSolidTree.h

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+/* Copyright (c) <2003-2011> <Julio Jerez, Newton Game Dynamics>
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ *
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ *
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#ifndef __dgMeshEffectSolidTree_H__
+#define __dgMeshEffectSolidTree_H__
+
+#include "hpl1/engine/libraries/newton/core/dg.h"
+
+class dgMeshEffect;
+class dgMeshTreeCSGFace;
+class dgMeshEffectSolidTree;
+
+class dgMeshEffectSolidTree {
+public:
+	DG_CLASS_ALLOCATOR(allocator)
+
+	enum dgPlaneType {
+		m_divider = 1,
+		m_empty,
+		m_solid,
+	};
+
+	dgMeshEffectSolidTree(dgPlaneType type);
+	dgMeshEffectSolidTree(const dgMeshEffect &mesh, dgEdge *const face);
+	dgMeshEffectSolidTree(const dgHugeVector &plane, dgMemoryAllocator *const allocator);
+	~dgMeshEffectSolidTree();
+
+	dgHugeVector BuildPlane(const dgMeshEffect &mesh, dgEdge *const face) const;
+	void AddFace(const dgMeshEffect &mesh, dgEdge *const face);
+
+	dgPlaneType GetPointSide(const dgHugeVector &point) const;
+	dgPlaneType GetFaceSide(const dgMeshTreeCSGFace *const face) const;
+
+	dgPlaneType m_planeType;
+	dgMeshEffectSolidTree *m_back;
+	dgMeshEffectSolidTree *m_front;
+	dgHugeVector m_plane;
+};
+
+class dgMeshTreeCSGFace : public dgList<dgHugeVector>, public dgRefCounter {
+public:
+	dgMeshTreeCSGFace(const dgMeshEffect &mesh, dgEdge *const face);
+	dgMeshTreeCSGFace(dgMemoryAllocator *const allocator, dgInt32 count, const dgHugeVector *const points);
+
+	void Clip(const dgHugeVector &plane, dgMeshTreeCSGFace **leftOut, dgMeshTreeCSGFace **rightOut);
+	void MergeMissingVertex(const dgMeshTreeCSGFace *const face);
+	bool IsPointOnEdge(const dgHugeVector &p0, const dgHugeVector &p1, const dgHugeVector &q) const;
+	bool CheckFaceArea(dgInt32 count, const dgHugeVector *const points) const;
+	dgInt32 RemoveDuplicates(dgInt32 count, dgHugeVector *const points) const;
+
+	dgHugeVector FaceNormal() const;
+
+	bool CheckConvex(const dgHugeVector &normal) const;
+
+#ifdef _DEBUG
+	dgMatrix DebugMatrix() const;
+	void Trace(const dgMatrix &matrix) const;
+#endif
+
+	dgMeshEffectSolidTree::dgPlaneType m_side;
+};
+
+#endif