144 lines
4.5 KiB
C++
144 lines
4.5 KiB
C++
//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2019 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#ifndef PX_PHYSICS_NX_HEIGHTFIELD_GEOMETRY
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#define PX_PHYSICS_NX_HEIGHTFIELD_GEOMETRY
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/** \addtogroup geomutils
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@{
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*/
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#include "geometry/PxTriangleMeshGeometry.h"
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#include "common/PxCoreUtilityTypes.h"
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#if !PX_DOXYGEN
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namespace physx
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{
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#endif
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#define PX_MIN_HEIGHTFIELD_XZ_SCALE 1e-8f
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#define PX_MIN_HEIGHTFIELD_Y_SCALE (0.0001f / PxReal(0xFFFF))
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class PxHeightField;
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/**
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\brief Height field geometry class.
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This class allows to create a scaled height field geometry instance.
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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.
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*/
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class PxHeightFieldGeometry : public PxGeometry
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{
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public:
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PX_INLINE PxHeightFieldGeometry() :
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PxGeometry (PxGeometryType::eHEIGHTFIELD),
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heightField (NULL),
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heightScale (1.0f),
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rowScale (1.0f),
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columnScale (1.0f),
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heightFieldFlags(0)
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{}
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PX_INLINE PxHeightFieldGeometry(PxHeightField* hf,
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PxMeshGeometryFlags flags,
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PxReal heightScale_,
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PxReal rowScale_,
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PxReal columnScale_) :
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PxGeometry (PxGeometryType::eHEIGHTFIELD),
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heightField (hf) ,
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heightScale (heightScale_),
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rowScale (rowScale_),
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columnScale (columnScale_),
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heightFieldFlags (flags)
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{
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}
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/**
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\brief Returns true if the geometry is valid.
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\return True if the current settings are valid
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\note A valid height field has a positive scale value in each direction (heightScale > 0, rowScale > 0, columnScale > 0).
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It is illegal to call PxRigidActor::createShape and PxPhysics::createShape with a height field that has zero extents in any direction.
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@see PxRigidActor::createShape, PxPhysics::createShape
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*/
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PX_INLINE bool isValid() const;
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public:
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/**
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\brief The height field data.
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*/
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PxHeightField* heightField;
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/**
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\brief The scaling factor for the height field in vertical direction (y direction in local space).
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*/
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PxReal heightScale;
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/**
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\brief The scaling factor for the height field in the row direction (x direction in local space).
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*/
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PxReal rowScale;
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/**
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\brief The scaling factor for the height field in the column direction (z direction in local space).
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*/
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PxReal columnScale;
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/**
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\brief Flags to specify some collision properties for the height field.
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*/
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PxMeshGeometryFlags heightFieldFlags;
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PxPadding<3> paddingFromFlags; //!< padding for mesh flags.
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};
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PX_INLINE bool PxHeightFieldGeometry::isValid() const
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{
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if (mType != PxGeometryType::eHEIGHTFIELD)
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return false;
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if (!PxIsFinite(heightScale) || !PxIsFinite(rowScale) || !PxIsFinite(columnScale))
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return false;
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if (rowScale < PX_MIN_HEIGHTFIELD_XZ_SCALE || columnScale < PX_MIN_HEIGHTFIELD_XZ_SCALE || heightScale < PX_MIN_HEIGHTFIELD_Y_SCALE)
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return false;
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if (!heightField)
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return false;
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return true;
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}
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#if !PX_DOXYGEN
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} // namespace physx
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#endif
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/** @} */
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#endif
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