1 /* 2 Bullet Continuous Collision Detection and Physics Library 3 Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/ 4 5 This software is provided 'as-is', without any express or implied warranty. 6 In no event will the authors be held liable for any damages arising from the use of this software. 7 Permission is granted to anyone to use this software for any purpose, 8 including commercial applications, and to alter it and redistribute it freely, 9 subject to the following restrictions: 10 11 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. 12 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 13 3. This notice may not be removed or altered from any source distribution. 14 */ 15 16 17 #ifndef BT_CONVEX_CAST_H 18 #define BT_CONVEX_CAST_H 19 20 #include "LinearMath/btTransform.h" 21 #include "LinearMath/btVector3.h" 22 #include "LinearMath/btScalar.h" 23 class btMinkowskiSumShape; 24 #include "LinearMath/btIDebugDraw.h" 25 26 /// btConvexCast is an interface for Casting 27 class btConvexCast 28 { 29 public: 30 31 32 virtual ~btConvexCast(); 33 34 ///RayResult stores the closest result 35 /// alternatively, add a callback method to decide about closest/all results 36 struct CastResult 37 { 38 //virtual bool addRayResult(const btVector3& normal,btScalar fraction) = 0; 39 DebugDrawCastResult40 virtual void DebugDraw(btScalar fraction) {(void)fraction;} drawCoordSystemCastResult41 virtual void drawCoordSystem(const btTransform& trans) {(void)trans;} reportFailureCastResult42 virtual void reportFailure(int errNo, int numIterations) {(void)errNo;(void)numIterations;} CastResultCastResult43 CastResult() 44 :m_fraction(btScalar(BT_LARGE_FLOAT)), 45 m_debugDrawer(0), 46 m_allowedPenetration(btScalar(0)) 47 { 48 } 49 50 ~CastResultCastResult51 virtual ~CastResult() {}; 52 53 btTransform m_hitTransformA; 54 btTransform m_hitTransformB; 55 btVector3 m_normal; 56 btVector3 m_hitPoint; 57 btScalar m_fraction; //input and output 58 btIDebugDraw* m_debugDrawer; 59 btScalar m_allowedPenetration; 60 61 }; 62 63 64 /// cast a convex against another convex object 65 virtual bool calcTimeOfImpact( 66 const btTransform& fromA, 67 const btTransform& toA, 68 const btTransform& fromB, 69 const btTransform& toB, 70 CastResult& result) = 0; 71 }; 72 73 #endif //BT_CONVEX_CAST_H 74