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ClothMeshDesc.h

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00001 // This code contains NVIDIA Confidential Information and is disclosed to you
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00007 // any modifications thereto. Any use, reproduction, disclosure, or
00008 // distribution of this software and related documentation without an express
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00011 // ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
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00013 // THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
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00020 // or patent rights of NVIDIA Corporation. Details are subject to change without notice.
00021 // This code supersedes and replaces all information previously supplied.
00022 // NVIDIA Corporation products are not authorized for use as critical
00023 // components in life support devices or systems without express written approval of
00024 // NVIDIA Corporation.
00025 //
00026 // Copyright (c) 2008-2017 NVIDIA Corporation. All rights reserved.
00027 // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
00028 // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
00029 
00030 
00031 #ifndef NV_CLOTH_EXTENSIONS_CLOTHMESHDESC
00032 #define NV_CLOTH_EXTENSIONS_CLOTHMESHDESC
00033 
00037 #include "foundation/PxVec3.h"
00038 
00039 namespace nv
00040 {
00041 namespace cloth
00042 {
00043 
00044 struct StridedData
00045 {
00051     physx::PxU32 stride;
00052     const void* data;
00053 
00054     StridedData() : stride( 0 ), data( NULL ) {}
00055 
00056     template<typename TDataType>
00057     PX_INLINE const TDataType& at( physx::PxU32 idx ) const
00058     {
00059         physx::PxU32 theStride( stride );
00060         if ( theStride == 0 )
00061             theStride = sizeof( TDataType );
00062         physx::PxU32 offset( theStride * idx );
00063         return *(reinterpret_cast<const TDataType*>( reinterpret_cast< const physx::PxU8* >( data ) + offset ));
00064     }
00065 };
00066 
00067 struct BoundedData : public StridedData
00068 {
00069     physx::PxU32 count;
00070     BoundedData() : count( 0 ) {}
00071 };
00072 
00076 struct MeshFlag
00077 {
00078     enum Enum
00079     {
00080         e16_BIT_INDICES     =   (1<<1)  
00081     };
00082 };
00083 
00087 class ClothMeshDesc
00088 {
00089 public:
00090 
00094     BoundedData points;
00095 
00099     BoundedData pointsStiffness;
00100 
00108     BoundedData invMasses;
00109 
00124     BoundedData triangles;
00125 
00140     BoundedData quads;
00141 
00145     unsigned int flags;
00146 
00150     PX_INLINE ClothMeshDesc();
00154     PX_INLINE void setToDefault();
00159     PX_INLINE bool isValid() const;
00160 };
00161 
00162 PX_INLINE ClothMeshDesc::ClothMeshDesc()
00163 {
00164     flags = 0;
00165 }
00166 
00167 PX_INLINE void ClothMeshDesc::setToDefault()
00168 {
00169     *this = ClothMeshDesc();
00170 }
00171 
00172 PX_INLINE bool ClothMeshDesc::isValid() const
00173 {
00174     if (points.count < 3)   // at least 1 triangle
00175         return false;
00176     if ((pointsStiffness.count != points.count) && pointsStiffness.count != 0)
00177         return false; // either all or none of the points can have stiffness information
00178     if (points.count > 0xffff && flags & MeshFlag::e16_BIT_INDICES)
00179         return false;
00180     if (!points.data)
00181         return false;
00182     if (points.stride < sizeof(physx::PxVec3))  // should be at least one point
00183         return false;
00184 
00185     if (invMasses.data && invMasses.stride < sizeof(float))
00186         return false;
00187     if (invMasses.data && invMasses.count != points.count)
00188         return false;
00189 
00190     if (!triangles.count && !quads.count)   // no support for non-indexed mesh
00191         return false;
00192     if (triangles.count && !triangles.data)
00193         return false;
00194     if (quads.count && !quads.data)
00195         return false;
00196 
00197     physx::PxU32 indexSize = (flags & MeshFlag::e16_BIT_INDICES) ? sizeof(physx::PxU16) : sizeof(physx::PxU32);
00198     if (triangles.count && triangles.stride < indexSize*3) 
00199         return false; 
00200     if (quads.count && quads.stride < indexSize*4)
00201         return false;
00202 
00203     return true;
00204 }
00205 
00206 } // namespace cloth
00207 } // namespace nv
00208 
00209 
00211 #endif
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