MakeGhostParticles.cu

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#include "MakeGhostParticles.h"
 
namespace dyno
{
 
    template<typename TDataType>
    MakeGhostParticles<TDataType>::MakeGhostParticles()
        : GhostParticles<TDataType>()
    {
        this->stateNormal()->promoteInput();
    }
 
    template<typename TDataType>
    MakeGhostParticles<TDataType>::~MakeGhostParticles()
    {
    }
 
    template<typename Coord>
    __global__ void MakeGhost_ReverseNomals(
        DArray<Coord> Normals,
        bool flag
    )
    {
        int pId = threadIdx.x + (blockIdx.x * blockDim.x);
        if (pId >= Normals.size()) return;
 
        if (flag == true)
        {
            Normals[pId] = (-1.0) * Normals[pId];
        }
 
    }
 
 
    template<typename TDataType>
    void MakeGhostParticles<TDataType>::resetStates()
    {
        
 
        this->GhostParticles<TDataType>::resetStates();
 
        auto& inTopo = this->inPoints()->getData();
 
        auto pts = std::make_shared<PointSet<TDataType>>();
        pts->copyFrom(inTopo);
 
        int num = pts->getPoints().size();
 
        if (this->stateNormal()->size() != num)
        {
            std::cout << "Ghost particle normals error: " << num << ", " << this->stateNormal()->size() << std::endl;
        }
 
        this->statePointSet()->setDataPtr(pts);
        this->statePosition()->assign(pts->getPoints());
 
        this->stateVelocity()->allocate();
        this->stateVelocity()->resize(num);
        this->stateVelocity()->reset();
 
        std::vector<Attribute> host_attribute;
        Attribute attri;
        attri.setRigid();
        attri.setFixed();
        for (int i = 0; i < num; i++)
        {
            host_attribute.push_back(attri);
        }
        this->stateAttribute()->resize(num);
        this->stateAttribute()->assign(host_attribute);
 
        cuExecute(num,
            MakeGhost_ReverseNomals,
            this->stateNormal()->getData(),
            this->varReverseNormal()->getValue()
            );
    }
 
    DEFINE_CLASS(MakeGhostParticles);
}