Coons.h

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

  (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 COONSPATCH_H_
#define COONSPATCH_H_

#include "ParametricCurve.h"
#include "ParametricFace.h"

class CoonsPatch {
 public:
  CoonsPatch(pMeshEnt in_vtx0,
             pMeshEnt in_vtx1,
             pMeshEnt in_vtx2,
             pMeshEnt in_vtx3);

  virtual ~CoonsPatch() {
  }

  int eval(Point2d in_xi, Point3d & out_xyz);
  int order();
  int deriv1(Point2d in_xi,
               Point3d & out_xyz1,
               Point3d & out_xyz2);

 private:
  pMeshEnt m_vert0;  // r(0, 0)
  pMeshEnt m_vert1;  // r(1, 0)
  pMeshEnt m_vert2;  // r(1, 1)
  pMeshEnt m_vert3;  // r(0, 1)

  pCurveGeom m_curve01; // r(u, 0)
  pCurveGeom m_curve32; // r(u, 1)
  pCurveGeom m_curve03; // r(0, v)
  pCurveGeom m_curve12; // r(1, v)
};

#endif  // COONSPATCH_H_