Space-Project/dependencies/physx-4.1/include/geometry/PxGeometryHelpers.h
2021-01-16 17:11:39 +01:00

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//
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// modification, are permitted provided that the following conditions
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// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
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// from this software without specific prior written permission.
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// Copyright (c) 2008-2019 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_GEOMETRYHELPERS
#define PX_PHYSICS_GEOMETRYHELPERS
/** \addtogroup geomutils
@{
*/
#include "foundation/PxPlane.h"
#include "foundation/PxTransform.h"
#include "foundation/PxUnionCast.h"
#include "common/PxPhysXCommonConfig.h"
#include "geometry/PxGeometry.h"
#include "geometry/PxBoxGeometry.h"
#include "geometry/PxSphereGeometry.h"
#include "geometry/PxCapsuleGeometry.h"
#include "geometry/PxPlaneGeometry.h"
#include "geometry/PxConvexMeshGeometry.h"
#include "geometry/PxHeightFieldGeometry.h"
#if !PX_DOXYGEN
namespace physx
{
#endif
/**
\brief Geometry holder class
This class contains enough space to hold a value of any PxGeometry subtype.
Its principal use is as a convenience class to allow geometries to be returned polymorphically
from functions. See PxShape::getGeometry();
*/
PX_ALIGN_PREFIX(4)
class PxGeometryHolder
{
public:
PX_FORCE_INLINE PxGeometryType::Enum getType() const
{
return any().getType();
}
PX_FORCE_INLINE PxGeometry& any()
{
return *PxUnionCast<PxGeometry*>(&bytes.geometry);
}
PX_FORCE_INLINE const PxGeometry& any() const
{
return *PxUnionCast<const PxGeometry*>(&bytes.geometry);
}
PX_FORCE_INLINE PxSphereGeometry& sphere()
{
return get<PxSphereGeometry, PxGeometryType::eSPHERE>();
}
PX_FORCE_INLINE const PxSphereGeometry& sphere() const
{
return get<const PxSphereGeometry, PxGeometryType::eSPHERE>();
}
PX_FORCE_INLINE PxPlaneGeometry& plane()
{
return get<PxPlaneGeometry, PxGeometryType::ePLANE>();
}
PX_FORCE_INLINE const PxPlaneGeometry& plane() const
{
return get<const PxPlaneGeometry, PxGeometryType::ePLANE>();
}
PX_FORCE_INLINE PxCapsuleGeometry& capsule()
{
return get<PxCapsuleGeometry, PxGeometryType::eCAPSULE>();
}
PX_FORCE_INLINE const PxCapsuleGeometry& capsule() const
{
return get<const PxCapsuleGeometry, PxGeometryType::eCAPSULE>();
}
PX_FORCE_INLINE PxBoxGeometry& box()
{
return get<PxBoxGeometry, PxGeometryType::eBOX>();
}
PX_FORCE_INLINE const PxBoxGeometry& box() const
{
return get<const PxBoxGeometry, PxGeometryType::eBOX>();
}
PX_FORCE_INLINE PxConvexMeshGeometry& convexMesh()
{
return get<PxConvexMeshGeometry, PxGeometryType::eCONVEXMESH>();
}
PX_FORCE_INLINE const PxConvexMeshGeometry& convexMesh() const
{
return get<const PxConvexMeshGeometry, PxGeometryType::eCONVEXMESH>();
}
PX_FORCE_INLINE PxTriangleMeshGeometry& triangleMesh()
{
return get<PxTriangleMeshGeometry, PxGeometryType::eTRIANGLEMESH>();
}
PX_FORCE_INLINE const PxTriangleMeshGeometry& triangleMesh() const
{
return get<const PxTriangleMeshGeometry, PxGeometryType::eTRIANGLEMESH>();
}
PX_FORCE_INLINE PxHeightFieldGeometry& heightField()
{
return get<PxHeightFieldGeometry, PxGeometryType::eHEIGHTFIELD>();
}
PX_FORCE_INLINE const PxHeightFieldGeometry& heightField() const
{
return get<const PxHeightFieldGeometry, PxGeometryType::eHEIGHTFIELD>();
}
PX_FORCE_INLINE void storeAny(const PxGeometry& geometry)
{
PX_ASSERT_WITH_MESSAGE( (geometry.getType() >= PxGeometryType::eSPHERE) &&
(geometry.getType() < PxGeometryType::eGEOMETRY_COUNT),
"Unexpected GeometryType in PxGeometryHolder::storeAny");
switch(geometry.getType())
{
case PxGeometryType::eSPHERE: put<PxSphereGeometry>(geometry); break;
case PxGeometryType::ePLANE: put<PxPlaneGeometry>(geometry); break;
case PxGeometryType::eCAPSULE: put<PxCapsuleGeometry>(geometry); break;
case PxGeometryType::eBOX: put<PxBoxGeometry>(geometry); break;
case PxGeometryType::eCONVEXMESH: put<PxConvexMeshGeometry>(geometry); break;
case PxGeometryType::eTRIANGLEMESH: put<PxTriangleMeshGeometry>(geometry); break;
case PxGeometryType::eHEIGHTFIELD: put<PxHeightFieldGeometry>(geometry); break;
case PxGeometryType::eGEOMETRY_COUNT:
case PxGeometryType::eINVALID: break;
}
}
PX_FORCE_INLINE PxGeometryHolder() {}
PX_FORCE_INLINE PxGeometryHolder(const PxGeometry& geometry){ storeAny(geometry); }
private:
template<typename T> void put(const PxGeometry& geometry)
{
static_cast<T&>(any()) = static_cast<const T&>(geometry);
}
template<typename T, PxGeometryType::Enum type> T& get()
{
PX_ASSERT(getType() == type);
return static_cast<T&>(any());
}
template<typename T, PxGeometryType::Enum type> T& get() const
{
PX_ASSERT(getType() == type);
return static_cast<T&>(any());
}
union {
PxU8 geometry[sizeof(PxGeometry)];
PxU8 box[sizeof(PxBoxGeometry)];
PxU8 sphere[sizeof(PxSphereGeometry)];
PxU8 capsule[sizeof(PxCapsuleGeometry)];
PxU8 plane[sizeof(PxPlaneGeometry)];
PxU8 convex[sizeof(PxConvexMeshGeometry)];
PxU8 mesh[sizeof(PxTriangleMeshGeometry)];
PxU8 heightfield[sizeof(PxHeightFieldGeometry)];
} bytes;
}
PX_ALIGN_SUFFIX(4);
#if !PX_DOXYGEN
} // namespace physx
#endif
/** @} */
#endif