DyHairSystem.h

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#ifndef DY_HAIR_SYSTEM_H
#define DY_HAIR_SYSTEM_H
 
#include "DyHairSystemCore.h"
#include "PxvGeometry.h"
 
namespace physx
{
    namespace Sc
    {
        class HairSystemSim;
    }
 
    namespace Dy
    {
        typedef size_t HairSystemHandle;
        
        // forward-declarations
        class Context;
        class HairSystem;
 
        struct HairSystemDirtyFlag
        {
            enum Enum
            {
                // Changes are processed from highest (most fundamental) to lowest to ensure correct dependencies
                eNONE =                         0,                      
                ePARAMETERS =                   1 <<  0,                
                eGRID_SIZE =                    1 <<  1 | ePARAMETERS,  
                eATTACHMENT =                   1 <<  2,                
                ePOSITIONS_VELOCITIES_MASS =    1 <<  3,                
                eREST_POSITION_TRANSFORM =      1 <<  4,                
                eLOD_SWITCH =                   1 <<  5,                
                eLOD_DATA =                     1 <<  6 | eLOD_SWITCH,  
                eBENDING_REST_ANGLES =          1 <<  7 | eLOD_DATA,    
                eTWISTING_REST_POSITIONS =      1 <<  8 | eLOD_DATA,    
                eREST_POSITIONS =               1 <<  9 | eLOD_DATA,    
                eSHAPE_MATCHING_SIZES =         1 << 10 | ePARAMETERS | eLOD_DATA,      
                eSTRAND_LENGTHS  =              1 << 11 | eLOD_DATA | eSHAPE_MATCHING_SIZES | eBENDING_REST_ANGLES | eTWISTING_REST_POSITIONS, 
                eNUM_STRANDS_OR_VERTS =         1 << 12 | eSHAPE_MATCHING_SIZES
                | ePOSITIONS_VELOCITIES_MASS | eBENDING_REST_ANGLES | eTWISTING_REST_POSITIONS
                | eREST_POSITIONS | eLOD_DATA | eSTRAND_LENGTHS, 
 
                eALL = (1 << 13) - 1                                    
            };
        };
 
 
        struct HairSystemSolverDesc
        {
            HairSystem*     hairSystem;
        };
 
        class HairSystem
        {
            PX_NOCOPY(HairSystem)
        public:
            HairSystem(Sc::HairSystemSim* sim, Dy::HairSystemCore& core) :
                mSim(sim)
                , mCore(core)
                , mShapeCore(NULL)
                , mElementId(0xffFFffFF)
                , mGpuRemapId(0xffFFffFF)
 
            {
                mCore.mDirtyFlags = HairSystemDirtyFlag::eALL;
            }
 
            ~HairSystem() {}
 
            PX_FORCE_INLINE void setShapeCore(PxsShapeCore* shapeCore)
            {
                mShapeCore = shapeCore;
            }
 
            PX_FORCE_INLINE PxU32 getGpuRemapId() const { return mGpuRemapId; }
            PX_FORCE_INLINE void setGpuRemapId(PxU32 remapId)
            {
                mGpuRemapId = remapId;
                PxHairSystemGeometryLL& geom = mShapeCore->mGeometry.get<PxHairSystemGeometryLL>();
                geom.gpuRemapId = remapId;
            }
 
            PX_FORCE_INLINE PxU32 getElementId() const { return mElementId; }
            PX_FORCE_INLINE void setElementId(const PxU32 elementId) { mElementId = elementId; }
 
 
            PX_FORCE_INLINE Sc::HairSystemSim* getHairSystemSim() const { return mSim; }
 
            PX_FORCE_INLINE const HairSystemCore& getCore() const { return mCore; }
            PX_FORCE_INLINE HairSystemCore& getCore() { return mCore; }
            PX_FORCE_INLINE PxsShapeCore& getShapeCore() { return *mShapeCore; }
 
            PX_FORCE_INLINE PxU16 getIterationCounts() { return mCore.mSolverIterationCounts; }
 
        private: // variables
            Sc::HairSystemSim*  mSim;
            HairSystemCore&     mCore;
            PxsShapeCore*       mShapeCore;
            PxU32               mElementId; //this is used for the bound array
            PxU32               mGpuRemapId;
        };
 
 
        PX_FORCE_INLINE HairSystem* getHairSystem(HairSystemHandle handle)
        {
            return reinterpret_cast<HairSystem*>(handle);
        }
 
    }
}
 
#endif