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/* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
/** \file
* \ingroup bke
*
* The \link edmesh EDBM module \endlink is for editmode bmesh stuff.
* In contrast, this module is for code shared with blenkernel that's
* only concerned with low level operations on the #BMEditMesh structure.
*/
#include "DNA_customdata_types.h"
#include "bmesh.h"
#ifdef __cplusplus
extern "C" {
#endif
struct BMLoop;
struct BMPartialUpdate;
struct BMesh;
struct BMeshCalcTessellation_Params;
struct BoundBox;
struct Depsgraph;
struct Mesh;
struct Object;
struct Scene;
/**
* This structure is used for mesh edit-mode.
*
* Through this, you get access to both the edit #BMesh, its tessellation,
* and various data that doesn't belong in the #BMesh struct itself
* (mostly related to mesh evaluation).
*
* The entire modifier system works with this structure, and not #BMesh.
* #Mesh.edit_bmesh stores a pointer to this structure. */
typedef struct BMEditMesh {
struct BMesh *bm;
/**
* Face triangulation (tessellation) is stored as triplets of three loops,
* which each define a triangle.
*
* \see #MLoopTri as the documentation gives useful hints that apply to this data too.
*/
struct BMLoop *(*looptris)[3];
int tottri;
/** Selection mode (#SCE_SELECT_VERTEX, #SCE_SELECT_EDGE & #SCE_SELECT_FACE). */
short selectmode;
/** The active material (assigned to newly created faces). */
short mat_nr;
/** Temp variables for x-mirror editing (-1 when the layer does not exist). */
int mirror_cdlayer;
/**
* Enable for evaluated copies, causes the edit-mesh to free the memory, not it's contents.
*/
char is_shallow_copy;
/**
* ID data is older than edit-mode data.
* Set #Main.is_memfile_undo_flush_needed when enabling.
*/
char needs_flush_to_id;
} BMEditMesh;
/* editmesh.c */
void BKE_editmesh_looptri_calc_ex(BMEditMesh *em,
const struct BMeshCalcTessellation_Params *params);
void BKE_editmesh_looptri_calc(BMEditMesh *em);
void BKE_editmesh_looptri_calc_with_partial_ex(BMEditMesh *em,
struct BMPartialUpdate *bmpinfo,
const struct BMeshCalcTessellation_Params *params);
void BKE_editmesh_looptri_calc_with_partial(BMEditMesh *em, struct BMPartialUpdate *bmpinfo);
void BKE_editmesh_looptri_and_normals_calc_with_partial(BMEditMesh *em,
struct BMPartialUpdate *bmpinfo);
/**
* Performing the face normal calculation at the same time as tessellation
* gives a reasonable performance boost (approx ~20% faster).
*/
void BKE_editmesh_looptri_and_normals_calc(BMEditMesh *em);
/**
* \note The caller is responsible for ensuring triangulation data,
* typically by calling #BKE_editmesh_looptri_calc.
*/
BMEditMesh *BKE_editmesh_create(BMesh *bm);
BMEditMesh *BKE_editmesh_copy(BMEditMesh *em);
/**
* \brief Return the #BMEditMesh for a given object
*
* \note this function assumes this is a mesh object,
* don't add NULL data check here. caller must do that
*/
BMEditMesh *BKE_editmesh_from_object(struct Object *ob);
/**
* \note Does not free the #BMEditMesh struct itself.
*/
void BKE_editmesh_free_data(BMEditMesh *em);
float (*BKE_editmesh_vert_coords_alloc(struct Depsgraph *depsgraph,
struct BMEditMesh *em,
struct Scene *scene,
struct Object *ob,
int *r_vert_len))[3];
float (*BKE_editmesh_vert_coords_alloc_orco(BMEditMesh *em, int *r_vert_len))[3];
const float (*BKE_editmesh_vert_coords_when_deformed(struct Depsgraph *depsgraph,
struct BMEditMesh *em,
struct Scene *scene,
struct Object *obedit,
int *r_vert_len,
bool *r_is_alloc))[3];
void BKE_editmesh_lnorspace_update(BMEditMesh *em, struct Mesh *me);
/**
* If auto-smooth not already set, set it.
*/
void BKE_editmesh_ensure_autosmooth(BMEditMesh *em, struct Mesh *me);
struct BoundBox *BKE_editmesh_cage_boundbox_get(struct Object *object, BMEditMesh *em);
#ifdef __cplusplus
}
#endif
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