greencross.h

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/* ------------------------------------------------------------
 * This is the file "greencross.h" of this master thesis.
 * All rights reserved, Bennet Carstensen 2017
 * ------------------------------------------------------------ */

#ifndef GREENCROSS_H
#define GREENCROSS_H

#include "curve2d.h"
#include "h2matrix.h"
#include "surface3d.h"

const uint greencross_min_dim = 2;
const uint greencross_max_dim = 3;

typedef struct _greencross greencross;

typedef greencross *pgreencross;

typedef const greencross *pcgreencross;

struct _greencross
{
  void *geom;

  uint dim;

  uint n;

  uint *idx;

  uint nq;

  preal zq;

  preal wq;

  void *sq;

  uint ng;

  preal zg;

  preal wg;

  uint K;

  ph2matrix h2;

  real (*kernel_function) (const field* x, const field* y, const uint dim);

  real (*pdx_kernel_function) (const field* x,
                               const field* y,
                               const uint   dim,
                               const uint   i);

  real (*pdy_kernel_function) (const field* x,
                               const field* y,
                               const uint   dim,
                               const uint   i);
};

HEADER_PREFIX void
init_greencross(pgreencross gc, uint dim);

HEADER_PREFIX void
uninit_greencross(pgreencross gc);

HEADER_PREFIX pgreencross
new_laplace2d_greencross(pcurve2d c2d, uint res, void *eta, uint q, uint m);

HEADER_PREFIX void
del_greencross(pgreencross gc);

HEADER_PREFIX void
nearfield_greencross(pcgreencross gc,
                     const uint   rsize,
                     const uint   *ridx,
                     const uint   csize,
                     const uint   *cidx,
                     pamatrix     G);

HEADER_PREFIX void
fill_green_left_greencross(pcgreencross gc, pccluster t, pamatrix A);

HEADER_PREFIX void
fill_green_right_greencross(pcgreencross gc,
                            pccluster    t,
                            pccluster    s,
                            pamatrix     B);

HEADER_PREFIX void
green_cross_approximation(pcgreencross gc, ph2matrix H2);


#endif // GREENCROSS_H