PxHeightFieldGeometry.h

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#ifndef PX_HEIGHT_FIELD_GEOMETRY_H
#define PX_HEIGHT_FIELD_GEOMETRY_H
#include "geometry/PxTriangleMeshGeometry.h"
#include "common/PxCoreUtilityTypes.h"
 
#if !PX_DOXYGEN
namespace physx
{
#endif
 
#define PX_MIN_HEIGHTFIELD_XZ_SCALE 1e-8f
#define PX_MIN_HEIGHTFIELD_Y_SCALE (0.0001f / PxReal(0xFFFF))
 
class PxHeightField;
 
class PxHeightFieldGeometry : public PxGeometry 
{
public:
    PX_INLINE PxHeightFieldGeometry(PxHeightField* hf = NULL,
                                    PxMeshGeometryFlags flags = PxMeshGeometryFlag::Enum(0),
                                    PxReal heightScale_ = 1.0f,
                                    PxReal rowScale_ = 1.0f,
                                    PxReal columnScale_ = 1.0f) :
        PxGeometry          (PxGeometryType::eHEIGHTFIELD), 
        heightField         (hf),
        heightScale         (heightScale_),
        rowScale            (rowScale_),
        columnScale         (columnScale_),
        heightFieldFlags    (flags)
        {
        }
 
    PX_INLINE PxHeightFieldGeometry(const PxHeightFieldGeometry& that) :
        PxGeometry          (that), 
        heightField         (that.heightField),
        heightScale         (that.heightScale),
        rowScale            (that.rowScale),
        columnScale         (that.columnScale),
        heightFieldFlags    (that.heightFieldFlags)
        {
        }
 
    PX_INLINE void operator=(const PxHeightFieldGeometry& that)
    {
        mType = that.mType;
        heightField = that.heightField;
        heightScale = that.heightScale;
        rowScale = that.rowScale;
        columnScale = that.columnScale;
        heightFieldFlags = that.heightFieldFlags;
    }
 
    PX_INLINE bool isValid() const;
 
public:
    PxHeightField*      heightField;
 
    PxReal              heightScale;
 
    PxReal              rowScale;
 
    PxReal              columnScale;
 
    PxMeshGeometryFlags heightFieldFlags;
 
    PxPadding<3>        paddingFromFlags;   
};
 
 
PX_INLINE bool PxHeightFieldGeometry::isValid() const
{
    if(mType != PxGeometryType::eHEIGHTFIELD)
        return false;
    if(!PxIsFinite(heightScale) || !PxIsFinite(rowScale) || !PxIsFinite(columnScale))
        return false;
    if(rowScale < PX_MIN_HEIGHTFIELD_XZ_SCALE || columnScale < PX_MIN_HEIGHTFIELD_XZ_SCALE || heightScale < PX_MIN_HEIGHTFIELD_Y_SCALE)
        return false;
    if(!heightField)
        return false;
 
    return true;
}
 
#if !PX_DOXYGEN
} // namespace physx
#endif
 
#endif