PxVehicleTireFriction.h

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00026 // Copyright (c) 2008-2017 NVIDIA Corporation. All rights reserved.
00027 // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
00028 // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
00029 
00030 #ifndef PX_VEHICLE_TIREFRICTION_H
00031 #define PX_VEHICLE_TIREFRICTION_H
00032 
00036 #include "foundation/PxSimpleTypes.h"
00037 
00038 #if !PX_DOXYGEN
00039 namespace physx
00040 {
00041 #endif
00042 
00043 class PxMaterial;
00044 
00049 struct PxVehicleDrivableSurfaceType
00050 {
00051     enum
00052     {
00053         eSURFACE_TYPE_UNKNOWN=0xffffffff
00054     };
00055     PxU32 mType;
00056 };
00057 
00062 class PxVehicleDrivableSurfaceToTireFrictionPairs
00063 {
00064 public:
00065 
00066     friend class VehicleSurfaceTypeHashTable;
00067 
00068     enum
00069     {
00070         eMAX_NB_SURFACE_TYPES=256
00071     };
00072 
00084     static PxVehicleDrivableSurfaceToTireFrictionPairs* allocate
00085         (const PxU32 maxNbTireTypes, const PxU32 maxNbSurfaceTypes);
00086 
00101     void setup
00102         (const PxU32 nbTireTypes, const PxU32 nbSurfaceTypes, 
00103          const PxMaterial** drivableSurfaceMaterials, const PxVehicleDrivableSurfaceType* drivableSurfaceTypes);
00104 
00108     void release();
00109 
00117     void setTypePairFriction(const PxU32 surfaceType, const PxU32 tireType, const PxReal value);
00118 
00126     PxReal getTypePairFriction(const PxU32 surfaceType, const PxU32 tireType) const;
00127 
00133     PxU32 getMaxNbSurfaceTypes() const {return mMaxNbSurfaceTypes;}
00134 
00140     PxU32 getMaxNbTireTypes() const {return mMaxNbTireTypes;}
00141 
00142 private:
00143 
00150     PxReal* mPairs;                 
00151 
00162     const PxMaterial** mDrivableSurfaceMaterials;
00163 
00174     PxVehicleDrivableSurfaceType* mDrivableSurfaceTypes;
00175 
00183     PxU32 mNbSurfaceTypes;          
00184 
00190     PxU32 mMaxNbSurfaceTypes;           
00191 
00197     PxU32 mNbTireTypes;         
00198 
00204     PxU32 mMaxNbTireTypes;          
00205 
00206 
00207 #if !PX_P64_FAMILY
00208     PxU32 mPad[1];
00209 #else
00210     PxU32 mPad[2];
00211 #endif
00212 
00213     PxVehicleDrivableSurfaceToTireFrictionPairs(){}
00214     ~PxVehicleDrivableSurfaceToTireFrictionPairs(){}
00215 };
00216 PX_COMPILE_TIME_ASSERT(0==(sizeof(PxVehicleDrivableSurfaceToTireFrictionPairs) & 15));
00217 
00218 #if !PX_DOXYGEN
00219 } // namespace physx
00220 #endif
00221 
00223 #endif //PX_VEHICLE_TIREFRICTION_H


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