// Gmsh - Copyright (C) 1997-2025 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file in the Gmsh root directory for license information.
// Please report all issues on https://gitlab.onelab.info/gmsh/gmsh/issues.
//
// Contributed by Amaury Johnen

#ifndef INTERIOR_VERTEX_PLACEMENT_H
#define INTERIOR_VERTEX_PLACEMENT_H

#include "fullMatrix.h"

// Generate matrices M that allow to obtain a fair placement of high-order
// interior nodes when only boundary nodes are given.
// If x^b are x coordinate of boundary nodes, then x coordinate of interior
// nodes are given by M*x^b.
// The placement is obtained by analogy with linear transfinite interpolation.

// TODO Amaury: Create sparseMatrix?

fullMatrix<double> *getInnerVertexPlacement(int type, int order);

fullMatrix<double> gmshGenerateInnerVertexPlacementTriangle(int order);
fullMatrix<double> gmshGenerateInnerVertexPlacementQuadrangle(int order);
fullMatrix<double> gmshGenerateInnerVertexPlacementTetrahedron(int order);
fullMatrix<double> gmshGenerateInnerVertexPlacementHexahedron(int order);
fullMatrix<double> gmshGenerateInnerVertexPlacementPrism(int order);
fullMatrix<double> gmshGenerateInnerVertexPlacementPyramid(int order);

fullMatrix<double> gmshGenerateInnerVertexPlacementTriangleLinear(int order,
                                                                  int dir);
fullMatrix<double> gmshGenerateInnerVertexPlacementQuadrangleLinear(int order);
fullMatrix<double> gmshGenerateInnerVertexPlacementTetrahedronLinear(int order,
                                                                     int dir);
fullMatrix<double> gmshGenerateInnerVertexPlacementHexahedronLinear(int order,
                                                                    int dir);
fullMatrix<double> gmshGenerateInnerVertexPlacementPrismLinear(int order,
                                                               int dir);

#endif
