/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2012 Blender Foundation.
 * All rights reserved.
 */

/** \file
 * \ingroup pybmesh
 */

#pragma once

/* All use #BPy_BMLayerAccess struct. */

extern PyTypeObject BPy_BMLayerAccessVert_Type;
extern PyTypeObject BPy_BMLayerAccessEdge_Type;
extern PyTypeObject BPy_BMLayerAccessFace_Type;
extern PyTypeObject BPy_BMLayerAccessLoop_Type;

extern PyTypeObject BPy_BMLayerCollection_Type;
extern PyTypeObject BPy_BMLayerItem_Type;

#define BPy_BMLayerAccess_Check(v) (Py_TYPE(v) == &BPy_BMLayerAccess_Type)
#define BPy_BMLayerCollection_Check(v) (Py_TYPE(v) == &BPy_BMLayerCollection_Type)
#define BPy_BMLayerItem_Check(v) (Py_TYPE(v) == &BPy_BMLayerItem_Type)

/** All layers for vert/edge/face/loop. */
typedef struct BPy_BMLayerAccess {
  PyObject_VAR_HEAD
  struct BMesh *bm; /* keep first */
  char htype;
} BPy_BMLayerAccess;

/** Access different layer types deform/uv/vertex-color. */
typedef struct BPy_BMLayerCollection {
  PyObject_VAR_HEAD
  struct BMesh *bm; /* keep first */
  char htype;
  int type; /* customdata type - CD_XXX */
} BPy_BMLayerCollection;

/** Access a specific layer directly. */
typedef struct BPy_BMLayerItem {
  PyObject_VAR_HEAD
  struct BMesh *bm; /* keep first */
  char htype;
  int type;  /* customdata type - CD_XXX */
  int index; /* index of this layer type */
} BPy_BMLayerItem;

PyObject *BPy_BMLayerAccess_CreatePyObject(BMesh *bm, char htype);
PyObject *BPy_BMLayerCollection_CreatePyObject(BMesh *bm, char htype, int type);
PyObject *BPy_BMLayerItem_CreatePyObject(BMesh *bm, char htype, int type, int index);

void BPy_BM_init_types_customdata(void);

/**
 *\brief BMElem.__getitem__() / __setitem__()
 *
 * Assume all error checks are done, eg: `uv = vert[uv_layer]`
 */
PyObject *BPy_BMLayerItem_GetItem(BPy_BMElem *py_ele, BPy_BMLayerItem *py_layer);
int BPy_BMLayerItem_SetItem(BPy_BMElem *py_ele, BPy_BMLayerItem *py_layer, PyObject *value);
