Program Listing for include/cooking/PxConvexMeshDesc.h
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PX_CONVEX_MESH_DESC_H
#define PX_CONVEX_MESH_DESC_H
#include "foundation/PxVec3.h"
#include "foundation/PxFlags.h"
#include "common/PxCoreUtilityTypes.h"
#include "geometry/PxConvexMesh.h"
#include "PxSDFDesc.h"
#if !PX_DOXYGEN
namespace physx
{
#endif
struct PxConvexFlag
{
enum Enum
{
e16_BIT_INDICES = (1<<0),
eCOMPUTE_CONVEX = (1<<1),
eCHECK_ZERO_AREA_TRIANGLES = (1<<2),
eQUANTIZE_INPUT = (1 << 3),
eDISABLE_MESH_VALIDATION = (1 << 4),
ePLANE_SHIFTING = (1 << 5),
eFAST_INERTIA_COMPUTATION = (1 << 6),
eGPU_COMPATIBLE = (1 << 7),
eSHIFT_VERTICES = (1 << 8)
};
};
typedef PxFlags<PxConvexFlag::Enum,PxU16> PxConvexFlags;
PX_FLAGS_OPERATORS(PxConvexFlag::Enum,PxU16)
class PxConvexMeshDesc
{
public:
PxBoundedData points;
PxBoundedData polygons;
PxBoundedData indices;
PxConvexFlags flags;
PxU16 vertexLimit;
PxU16 polygonLimit;
PxU16 quantizedCount;
PxSDFDesc* sdfDesc;
PX_INLINE PxConvexMeshDesc();
PX_INLINE void setToDefault();
PX_INLINE bool isValid() const;
};
PX_INLINE PxConvexMeshDesc::PxConvexMeshDesc() //constructor sets to default
: vertexLimit(255), polygonLimit(255), quantizedCount(255), sdfDesc(NULL)
{
}
PX_INLINE void PxConvexMeshDesc::setToDefault()
{
*this = PxConvexMeshDesc();
}
PX_INLINE bool PxConvexMeshDesc::isValid() const
{
// Check geometry
if(points.count < 3 || //at least 1 trig's worth of points
(points.count > 0xffff && flags & PxConvexFlag::e16_BIT_INDICES))
return false;
if(!points.data)
return false;
if(points.stride < sizeof(PxVec3)) //should be at least one point's worth of data
return false;
if (quantizedCount < 4)
return false;
// Check topology
if(polygons.data)
{
if(polygons.count < 4) // we require 2 neighbors for each vertex - 4 polygons at least
return false;
if(!indices.data) // indices must be provided together with polygons
return false;
PxU32 limit = (flags & PxConvexFlag::e16_BIT_INDICES) ? sizeof(PxU16) : sizeof(PxU32);
if(indices.stride < limit)
return false;
limit = sizeof(PxHullPolygon);
if(polygons.stride < limit)
return false;
}
else
{
// We can compute the hull from the vertices
if(!(flags & PxConvexFlag::eCOMPUTE_CONVEX))
return false; // If the mesh is convex and we're not allowed to compute the hull,
// you have to provide it completely (geometry & topology).
}
if((flags & PxConvexFlag::ePLANE_SHIFTING) && vertexLimit < 4)
{
return false;
}
if (!(flags & PxConvexFlag::ePLANE_SHIFTING) && vertexLimit < 8)
{
return false;
}
if(vertexLimit > 255)
{
return false;
}
if (polygonLimit < 4)
{
return false;
}
if (polygonLimit > 255)
{
return false;
}
if (sdfDesc && !sdfDesc->isValid())
{
return false;
}
return true;
}
#if !PX_DOXYGEN
} // namespace physx
#endif
#endif