FEMultiQuadMesh.h

/*This file is part of the FEBio Studio source code and is licensed under the MIT license
listed below.

See Copyright-FEBio-Studio.txt for details.

Copyright (c) 2021 University of Utah, The Trustees of Columbia University in
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#pragma once
#include "FEMultiBlockMesh.h"
#include <vector>

using std::vector;

//-----------------------------------------------------------------------------
// The multi-quad mesh builds an fe mesh from an MB geometry
//
class FEMultiQuadMesh : public FEMesher
{
public:
	// constructor
	FEMultiQuadMesh();

	// destructor
	virtual ~FEMultiQuadMesh();

	// build the mesh
	FSMesh* BuildMesh();

	// set the quad mesh flag
	void SetElementType(int elemType);

	// build the mesh from the object
	bool Build(GObject* po);

	// build the multi-quad data
	virtual bool BuildMultiQuad();

	// clear the MQ data
	void ClearMQ();

public:
	int Nodes() const;
	MBNode& AddNode(const vec3d& r, int ntype = NODE_VERTEX);
	MBNode& GetMBNode(int i) { return m_MBNode[i]; }

	int Edges() const;
	MBEdge& GetEdge(int i);
	MBEdge& AddEdge();

	int Faces() const;
	MBFace& AddFace(int n0, int n1, int n2, int n3);
	MBFace& AddFace();
	MBFace& GetFace(int n);

	void SetFaceEdgeIDs(int nface, int n0, int n1, int n2, int n3);

	MBEdge& GetFaceEdge(int nface, int nedge);

	void SetFaceSizes(int nface, int nx, int ny);

	void ClearMeshSettings();

	bool SetEdgeDivisions(int iedge, int nd);
	bool SetDefaultDivisions(int nd);
	bool SetNodeWeights(std::vector<double>& w);

protected:
	void BuildMBEdges();

	// build the mesh items
	void BuildFENodes(FSMesh* pm);
	void BuildFEFaces(FSMesh* pm);
	void BuildFEEdges(FSMesh* pm);

	void BuildNodeFaceTable(vector< vector<int> >& NFT);
	int FindEdgeIndex(MBFace& F, int n1, int n2);
	int FindEdge(int n1, int n2);

	int GetEdgeNodeIndex(MBEdge& e, int i);

	int GetFaceEdgeNodeIndex(MBFace& f, int ne, int i);

protected:
	class MQPoint
	{
	public:
		int	m_i, m_j;
		double	m_r, m_s;

		MQPoint() { m_i = m_j = -1; m_r = m_s = 0.0; }
		MQPoint(int i, double r) { m_i = i; m_j = -1; m_r = r; m_s = 0.0; }
		MQPoint(int i, int j, double r, double s) { m_i = i; m_j = j; m_r = r; m_s = s; }
	};

protected:
	int GetFENode(MBNode& node);

	vec3d EdgePosition(MBEdge& edge, const MQPoint& q);
	vec3d FacePosition(MBFace& face, const MQPoint& q);

	int AddFENode(const vec3d& r, int gid = -1);

protected:
	int AddFENode(MBNode& N);
	int AddFEEdgeNode(MBEdge& E, const MQPoint& q);
	int AddFEFaceNode(MBFace& F, const MQPoint& q);

private:
	int		m_elemType;	// element type to generate
	bool	m_bquadMesh;

protected:
	GObject*		m_po;
	vector<MBFace>	m_MBFace;
	vector<MBEdge>	m_MBEdge;
	vector<MBNode>	m_MBNode;

	FSMesh* m_pm;
	FSNode* m_currentNode;
	int		m_nodes;
};

class GMultiPatch;

class FEMultiQuadMesher : public FEMultiQuadMesh
{
	enum { DIVS, ELEM_TYPE };

public:
	FEMultiQuadMesher(GMultiPatch* po);

	// build the mesh
	FSMesh* BuildMesh() override;

	bool BuildMultiQuad() override;

private:
	GMultiPatch* m_po;
};