d762312d68
git-svn-id: https://reactphysics3d.googlecode.com/svn/trunk@452 92aac97c-a6ce-11dd-a772-7fcde58d38e6
113 lines
4.4 KiB
C++
113 lines
4.4 KiB
C++
/********************************************************************************
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* ReactPhysics3D physics library, http://code.google.com/p/reactphysics3d/ *
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* Copyright (c) 2010-2012 Daniel Chappuis *
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*********************************************************************************
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* *
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* This software is provided 'as-is', without any express or implied warranty. *
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* In no event will the authors be held liable for any damages arising from the *
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* use of this software. *
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* *
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* Permission is granted to anyone to use this software for any purpose, *
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* including commercial applications, and to alter it and redistribute it *
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* freely, subject to the following restrictions: *
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* *
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* 1. The origin of this software must not be misrepresented; you must not claim *
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* that you wrote the original software. If you use this software in a *
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* product, an acknowledgment in the product documentation would be *
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* appreciated but is not required. *
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* *
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* 2. Altered source versions must be plainly marked as such, and must not be *
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* misrepresented as being the original software. *
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* *
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* 3. This notice may not be removed or altered from any source distribution. *
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* *
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********************************************************************************/
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#ifndef TRIANGLES_STORE_H
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#define TRIANGLES_STORE_H
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#include "TriangleEPA.h"
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// Libraries
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#include <cassert>
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// ReactPhysics3D namespace
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namespace reactphysics3d {
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// Constants
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const unsigned int MAX_TRIANGLES = 200; // Maximum number of triangles
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/* -------------------------------------------------------------------
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Class TrianglesStore :
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This class stores several triangles of the polytope in the EPA
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algorithm.
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-------------------------------------------------------------------
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*/
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class TrianglesStore {
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private:
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TriangleEPA triangles[MAX_TRIANGLES]; // Triangles
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int nbTriangles; // Number of triangles
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public:
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TrianglesStore(); // Constructor
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~TrianglesStore(); // Destructor
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void clear(); // Clear all the storage
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int getNbTriangles() const; // Return the number of triangles
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void setNbTriangles(int backup); // Set the number of triangles
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TriangleEPA& last(); // Return the last triangle
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TriangleEPA* newTriangle(const Vector3* vertices, uint v0, uint v1, uint v2); // Create a new triangle
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TriangleEPA& operator[](int i); // Access operator
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};
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// Clear all the storage
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inline void TrianglesStore::clear() {
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nbTriangles = 0;
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}
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// Return the number of triangles
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inline int TrianglesStore::getNbTriangles() const {
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return nbTriangles;
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}
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inline void TrianglesStore::setNbTriangles(int backup) {
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nbTriangles = backup;
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}
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// Return the last triangle
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inline TriangleEPA& TrianglesStore::last() {
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assert(nbTriangles > 0);
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return triangles[nbTriangles - 1];
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}
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// Create a new triangle
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inline TriangleEPA* TrianglesStore::newTriangle(const Vector3* vertices, uint v0, uint v1, uint v2) {
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TriangleEPA* newTriangle = 0;
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// If we have not reach the maximum number of triangles
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if (nbTriangles != MAX_TRIANGLES) {
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newTriangle = &triangles[nbTriangles++];
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new (newTriangle) TriangleEPA(v0, v1, v2);
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if (!newTriangle->computeClosestPoint(vertices)) {
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nbTriangles--;
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newTriangle = 0;
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}
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}
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// Return the new triangle
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return newTriangle;
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}
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// Access operator
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inline TriangleEPA& TrianglesStore::operator[](int i) {
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return triangles[i];
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}
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} // End of ReactPhysics3D namespace
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#endif |