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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PX_PHYSICS_NX_HEIGHTFIELD_GEOMETRY
#define PX_PHYSICS_NX_HEIGHTFIELD_GEOMETRY
/** \addtogroup geomutils
@{
*/
#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;
/**
\brief Height field geometry class.
This class allows to create a scaled height field geometry instance.
There is a minimum allowed value for Y and XZ scaling - PX_MIN_HEIGHTFIELD_XZ_SCALE, heightfield creation will fail if XZ value is below this value.
*/
class PxHeightFieldGeometry : public PxGeometry
{
public:
PX_INLINE PxHeightFieldGeometry() :
PxGeometry (PxGeometryType::eHEIGHTFIELD),
heightField (NULL),
heightScale (1.0f),
rowScale (1.0f),
columnScale (1.0f),
heightFieldFlags(0)
{}
PX_INLINE PxHeightFieldGeometry(PxHeightField* hf,
PxMeshGeometryFlags flags,
PxReal heightScale_,
PxReal rowScale_,
PxReal columnScale_) :
PxGeometry (PxGeometryType::eHEIGHTFIELD),
heightField (hf) ,
heightScale (heightScale_),
rowScale (rowScale_),
columnScale (columnScale_),
heightFieldFlags (flags)
{
}
/**
\brief Returns true if the geometry is valid.
\return True if the current settings are valid
\note A valid height field has a positive scale value in each direction (heightScale > 0, rowScale > 0, columnScale > 0).
It is illegal to call PxRigidActor::createShape and PxPhysics::createShape with a height field that has zero extents in any direction.
@see PxRigidActor::createShape, PxPhysics::createShape
*/
PX_INLINE bool isValid() const;
public:
/**
\brief The height field data.
*/
PxHeightField* heightField;
/**
\brief The scaling factor for the height field in vertical direction (y direction in local space).
*/
PxReal heightScale;
/**
\brief The scaling factor for the height field in the row direction (x direction in local space).
*/
PxReal rowScale;
/**
\brief The scaling factor for the height field in the column direction (z direction in local space).
*/
PxReal columnScale;
/**
\brief Flags to specify some collision properties for the height field.
*/
PxMeshGeometryFlags heightFieldFlags;
PxPadding<3> paddingFromFlags; //!< padding for mesh flags.
};
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
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