CrvTriBlending.h

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/****************************************************************************** 

  (c) 2004-2014 Scientific Computation Research Center, 
      Rensselaer Polytechnic Institute. All rights reserved.
  
  The LICENSE-SCOREC file included with this distribution describes the terms
  of the SCOREC Non-Commercial License this program is distributed under.
 
*******************************************************************************/

#ifndef CURVEMESHADAPT_CRVTRIBLENDING_H_
#define CURVEMESHADAPT_CRVTRIBLENDING_H_
 
#include "CrvFace.h"
#include "CrvEdge.h"

class CrvTriBlending : public CrvFace {
 public:
    CrvTriBlending(pMeshEnt in_face);
    CrvTriBlending(VtxPtrVec in_vert_vec);
    ~CrvTriBlending() {
      clear_edges();
    }

    int eval(double u, double v, double * pos); 

    int v_data_size() const {
      return 0;
    }

    std::string v_tag_name() const {
      return std::string( "crv_tri_blending" );
    }

    int eval_deriv1(double in_xi_1,
                    double in_xi_2,
                    Point3d & dxyz_dxi1,
                    Point3d & dxyz_dxi2);


 protected:

 private:
    int setup_verts();

    int setup_edges();

    int clear_edges();

    void eval_diff_fd(double in_xi1,
                      double in_xi2,
                      Point3d & dxyz_dxi1,
                      Point3d & dxyz_dxi2);

    void eval_diff_analytic(double in_xi1,
                            double in_xi2,
                            Point3d & dxyz_dxi1,
                            Point3d & dxyz_dxi2);

    void eval_diff_analytic_c2(double in_xi1,
                            double in_xi2,
                            Point3d & dxyz_dxi1,
                            Point3d & dxyz_dxi2);

    Point3d  m_vertex_100;
    Point3d  m_vertex_010;
    Point3d  m_vertex_001;
    CrvEdgePtr m_edge_P;
    CrvEdgePtr m_edge_Q;
    CrvEdgePtr m_edge_R;
};

#endif  // CURVEMESHADAPT_CRVTRIBLENDING_H_