NvBlastExtDamageAcceleratorInternal.h

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#pragma once

#include "NvBlastExtDamageShaders.h"
#include "PxBounds3.h"


namespace Nv
{
namespace Blast
{


class ExtDamageAcceleratorInternal : public NvBlastExtDamageAccelerator
{
public:
    struct QueryBondData
    {
        uint32_t bond;
        uint32_t node0;
        uint32_t node1;
    };

    class ResultCallback
    {
    public:
        ResultCallback(QueryBondData* buffer, uint32_t count) :
            m_bondBuffer(buffer), m_bondMaxCount(count), m_bondCount(0) {}

        virtual void processResults(const QueryBondData* bondBuffer, uint32_t count) = 0;

        void push(uint32_t bond, uint32_t node0, uint32_t node1)
        {
            m_bondBuffer[m_bondCount].bond = bond;
            m_bondBuffer[m_bondCount].node0 = node0;
            m_bondBuffer[m_bondCount].node1 = node1;
            m_bondCount++;
            if (m_bondCount == m_bondMaxCount)
            {
                dispatch();
            }
        }

        void dispatch()
        {
            if (m_bondCount)
            {
                processResults(m_bondBuffer, m_bondCount);
                m_bondCount = 0;
            }
        }
        
    private:
        QueryBondData* m_bondBuffer;
        uint32_t       m_bondMaxCount;

        uint32_t       m_bondCount;
    };

    virtual void findBondCentroidsInBounds(const physx::PxBounds3& bounds, ResultCallback& resultCallback) const = 0;
    virtual void findBondSegmentsInBounds(const physx::PxBounds3& bounds, ResultCallback& resultCallback) const = 0;
    virtual void findBondSegmentsPlaneIntersected(const physx::PxPlane& plane, ResultCallback& resultCallback) const = 0;

    // Non-thread safe! Multiple calls return the same memory.
    virtual void* getImmediateScratch(size_t size) = 0;
};


} // namespace Blast
} // namespace Nv