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Fabric.h

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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
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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 #pragma once
00031 
00032 #include "NvCloth/Callbacks.h"
00033 #include "NvCloth/Allocator.h"
00034 #include <PsAtomic.h>
00035 
00036 namespace nv
00037 {
00038 namespace cloth
00039 {
00040 
00041 class Factory;
00042 
00043 // abstract cloth constraints and triangle indices
00044 class Fabric : public UserAllocated
00045 {
00046 protected:
00047     Fabric(const Fabric&);
00048     Fabric& operator = (const Fabric&);
00049 
00050 protected:
00051     Fabric() : mRefCount(1)
00052     {
00053     }
00054 
00055     virtual ~Fabric()
00056     {
00057         NV_CLOTH_ASSERT(0 == mRefCount);
00058     }
00059 
00060 public:
00062     virtual Factory& getFactory() const = 0;
00063 
00069     virtual uint32_t getNumPhases() const = 0;
00070 
00074     virtual uint32_t getNumRestvalues() const = 0;
00075 
00082     virtual uint32_t getNumStiffnessValues() const = 0;
00083 
00084 
00088     virtual uint32_t getNumSets() const = 0;
00089 
00093     virtual uint32_t getNumIndices() const = 0;
00095     virtual uint32_t getNumParticles() const = 0;
00097     virtual uint32_t getNumTethers() const = 0;
00099     virtual uint32_t getNumTriangles() const = 0;
00100 
00102     virtual void scaleRestvalues(float) = 0;
00104     virtual void scaleTetherLengths(float) = 0;
00105 
00106     void incRefCount()
00107     {
00108         physx::shdfnd::atomicIncrement(&mRefCount);
00109         NV_CLOTH_ASSERT(mRefCount > 0);
00110     }
00111 
00113     bool decRefCount()
00114     {
00115         NV_CLOTH_ASSERT(mRefCount > 0);
00116         int result = physx::shdfnd::atomicDecrement(&mRefCount);
00117         if (result == 0)
00118         {
00119             delete this;
00120             return true;
00121         }
00122         return false;
00123     }
00124 
00125   protected:
00126     int32_t mRefCount;
00127 };
00128 
00129 } // namespace cloth
00130 } // namespace nv
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