MeshTriangle.h

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//Copyright (c) 2013-2023, The MercuryDPM Developers Team. All rights reserved.
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#ifndef MeshTriangle_H
#define MeshTriangle_H
 
#include <vector>
#include <Walls/BaseWall.h>
#include <Walls/InfiniteWall.h>
#include "Math/Vector.h"
 
class MeshTriangle : public BaseWall
{
public:
 
    // TODO write proper constructors (also copy constructors)
    MeshTriangle() = default;
 
    MeshTriangle(const MeshTriangle& other) = default;
 
    ~MeshTriangle() override = default;
 
    MeshTriangle* copy() const override
    { return new MeshTriangle(*this); }
 
    std::string getName() const override
    { return "MeshTriangle"; }
 
    void read(std::istream& is) override;
 
    void write(std::ostream& os) const override;
 
    void setVertices(Vec3D A, Vec3D B, Vec3D C);
    
    void setVertices(Vec3D A, Vec3D B, Vec3D C, Vec3D position);
    
    void setVertexVelocities(Vec3D A, Vec3D B, Vec3D C);
    
    std::array<Vec3D,3> getVertices() const {return vertex_;}
 
    Vec3D getFaceNormal() const {return faceNormal_;}
    
    Mdouble getArea() const {return area_;}
    
    
    void move(const Vec3D& move) override;
 
    void setVertexIds(unsigned int i, unsigned int j, unsigned int k);
    
    std::array<unsigned int, 3> getVertexIds() const { return vertexIds_; }
    
    // 
    void writeVTK(VTKContainer& vtk) const override;
 
    
    
    BaseInteraction* getInteractionWith(BaseParticle* p, unsigned timeStamp, InteractionHandler* interactionHandler) override;
    
    void checkInteractions(InteractionHandler* interactionHandler, unsigned int timeStamp) override;
    
    bool getDistanceAndNormal(const BaseParticle& p, Mdouble& distance, Vec3D& normal_return) const override;
    bool getDistanceNormalOverlapType(const BaseParticle& p, Mdouble& distance, Vec3D& normal, Mdouble& overlap, unsigned int& type) const;
    
    const Vec3D getVelocityAtContact(const Vec3D& contact) const override;
    
    const Vec3D getBaricentricWeight(const Vec3D& contact) const;
 
    void rotate(const Vec3D& angularVelocity) override;
 
    bool isLocal(Vec3D& min, Vec3D& max) const override;
 
    bool isInsideTriangle(const Vec3D &point) const;
 
    Mdouble getInvMass() const override;
    void setMass(Mdouble mass);
 
    void actionsOnRestart() override;
    
    void actionsAfterParticleGhostUpdate() override;
    
    void handleParticleRemoval(unsigned int id) override;
    
    void handleParticleAddition(unsigned int id, BaseParticle* p) override;
    
    void retrieveVertexParticles();
    
    void checkActive();
    
    bool getActive() { return isActive; }
    
    void setHandler(WallHandler* handler) override;
    
    void applyPressure(Mdouble presure);
    
    void applyForce(Vec3D force);
    
    
    std::array<MeshTriangle*, 3> neighbor = {{nullptr}};
    
    std::vector<std::vector<unsigned int>> vertexNeighbors;
 
private:
    
    void updateVertexAndNormal();
    
    void updateVerticesFromParticles();
    
    std::array<Vec3D, 3> vertex_;
    std::array<Vec3D, 3> vertexVelocity_;
    std::array<BaseParticle*, 3> vertexParticle_ = {{nullptr}};
 
    Vec3D vertexMin_;
    Vec3D vertexMax_;
 
    std::array<Vec3D, 3> edgeNormal_;
    std::array<Vec3D, 3> edge_;
    // Used to ignore certain contacts
    std::array<unsigned int, 3> vertexIds_;
    std::array<double, 3> edgeLength_;
 
 
    Vec3D faceNormal_;
    Mdouble area_;
 
    // TODO: replace defualt value by default value in proper constructor
    Mdouble invMass_= 0.0;
    
    bool isActive = 0;
};
 
#endif