PxHeightFieldGeometry.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 
00031 #ifndef PX_PHYSICS_NX_HEIGHTFIELD_GEOMETRY
00032 #define PX_PHYSICS_NX_HEIGHTFIELD_GEOMETRY
00033 
00036 #include "geometry/PxTriangleMeshGeometry.h"
00037 #include "common/PxCoreUtilityTypes.h"
00038 
00039 #if !PX_DOXYGEN
00040 namespace physx
00041 {
00042 #endif
00043 
00044 #define PX_MIN_HEIGHTFIELD_XZ_SCALE 1e-8f
00045 #define PX_MIN_HEIGHTFIELD_Y_SCALE (0.0001f / PxReal(0xFFFF))
00046 
00047 class PxHeightField;
00048 
00056 class PxHeightFieldGeometry : public PxGeometry 
00057 {
00058 public:
00059     PX_INLINE PxHeightFieldGeometry() :     
00060         PxGeometry      (PxGeometryType::eHEIGHTFIELD),
00061         heightField     (NULL),
00062         heightScale     (1.0f), 
00063         rowScale        (1.0f), 
00064         columnScale     (1.0f), 
00065         heightFieldFlags(0)
00066     {}
00067 
00068     PX_INLINE PxHeightFieldGeometry(PxHeightField* hf,
00069                                     PxMeshGeometryFlags flags, 
00070                                     PxReal heightScale_,
00071                                     PxReal rowScale_, 
00072                                     PxReal columnScale_) :
00073         PxGeometry          (PxGeometryType::eHEIGHTFIELD), 
00074         heightField         (hf) ,
00075         heightScale         (heightScale_), 
00076         rowScale            (rowScale_), 
00077         columnScale         (columnScale_), 
00078         heightFieldFlags    (flags)
00079         {
00080         }
00081 
00092     PX_INLINE bool isValid() const;
00093 
00094 public:
00098     PxHeightField*          heightField;
00099 
00103     PxReal                  heightScale;
00104 
00108     PxReal                  rowScale;
00109 
00113     PxReal                  columnScale;
00114 
00118     PxMeshGeometryFlags     heightFieldFlags;
00119 
00120     PxPadding<3>            paddingFromFlags;   
00121 };
00122 
00123 
00124 PX_INLINE bool PxHeightFieldGeometry::isValid() const
00125 {
00126     if (mType != PxGeometryType::eHEIGHTFIELD)
00127         return false;
00128     if (!PxIsFinite(heightScale) || !PxIsFinite(rowScale) || !PxIsFinite(columnScale))
00129         return false;
00130     if (rowScale < PX_MIN_HEIGHTFIELD_XZ_SCALE || columnScale < PX_MIN_HEIGHTFIELD_XZ_SCALE || heightScale < PX_MIN_HEIGHTFIELD_Y_SCALE)
00131         return false;
00132     if (!heightField)
00133         return false;
00134 
00135     return true;
00136 }
00137 
00138 #if !PX_DOXYGEN
00139 } // namespace physx
00140 #endif
00141 
00143 #endif


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