uvedit_islands.cc File Reference

#include "BLI_listbase.h"
#include "BLI_math_vector.h"
#include "BKE_editmesh.hh"
#include "DNA_image_types.h"
#include "ED_uvedit.hh"

Go to the source code of this file.

Classes
struct	SharedUVLoopData

Functions
UDIM packing helper functions
bool	uv_coords_isect_udim (const Image *image, const int udim_grid[2], const float coords[2])
Calculate UV Islands
static bool	bm_loop_uv_shared_edge_check (const BMLoop *l_a, const BMLoop *l_b, void *user_data)
static bool	uvedit_is_face_affected_for_calc_uv_islands (const Scene *scene, BMFace *efa, const bool only_selected_faces, const bool only_selected_uvs, const BMUVOffsets &uv_offsets)
int	bm_mesh_calc_uv_islands (const Scene *scene, BMesh *bm, ListBase *island_list, const bool only_selected_faces, const bool only_selected_uvs, const bool use_seams, const float aspect_y, const BMUVOffsets uv_offsets)

Detailed Description

Utilities for manipulating UV islands.

Note

This is similar to GEO_uv_parametrizer.hh, however the data structures there don't support arbitrary topology such as an edge with 3 or more faces using it. This API uses BMesh data structures and doesn't have limitations for manifold meshes.

Definition in file uvedit_islands.cc.

Function Documentation

bm_loop_uv_shared_edge_check()

static bool bm_loop_uv_shared_edge_check ( const BMLoop * l_a, const BMLoop * l_b, void * user_data )

static

Definition at line 69 of file uvedit_islands.cc.

References BM_elem_flag_test, BM_ELEM_SEAM, BM_loop_uv_share_edge_check(), BMLoop::e, and l_b.

Referenced by bm_mesh_calc_uv_islands().

bm_mesh_calc_uv_islands()

int bm_mesh_calc_uv_islands	(	const Scene *	scene,
		BMesh *	bm,
		ListBase *	island_list,
		const bool	only_selected_faces,
		const bool	only_selected_uvs,
		const bool	use_seams,
		const float	aspect_y,
		BMUVOffsets	offsets )

Calculate islands and add them to island_list returning the number of items added.

Definition at line 110 of file uvedit_islands.cc.

References FaceIsland::aspect_y, BLI_addtail(), BLI_assert, bm, BM_EDGE, BM_elem_flag_set, BM_ELEM_TAG, BM_FACE, BM_face_at_index(), BM_FACES_OF_MESH, BM_ITER_MESH, bm_loop_uv_shared_edge_check(), BM_mesh_calc_face_groups(), BM_mesh_elem_table_ensure(), FaceIsland::faces, faces, FaceIsland::faces_len, int, MEM_callocN, MEM_freeN(), MEM_mallocN, FaceIsland::offsets, SharedUVLoopData::offsets, BMesh::totface, SharedUVLoopData::use_seams, BMUVOffsets::uv, and uvedit_is_face_affected_for_calc_uv_islands().

Referenced by uv_select_similar_island_exec(), and uvedit_pack_islands_multi().

uv_coords_isect_udim()

bool uv_coords_isect_udim	(	const Image *	image,
		const int	udim_grid[2],
		const float	coords[2] )

Returns true if UV coordinates lie on a valid tile in UDIM grid or tiled image.

Definition at line 29 of file uvedit_islands.cc.

References floorf, IMA_SRC_TILED, is_zero_v2(), LISTBASE_FOREACH, tile, and tile_index.

Referenced by blender::geometry::UVPackIsland_Params::setUDIMOffsetFromSpaceImage(), and uvedit_pack_islands_multi().

uvedit_is_face_affected_for_calc_uv_islands()

static bool uvedit_is_face_affected_for_calc_uv_islands ( const Scene * scene, BMFace * efa, const bool only_selected_faces, const bool only_selected_uvs, const BMUVOffsets & uv_offsets )

static

Returns true if efa is able to be affected by a packing operation, given various parameters.

Checks if it's (not) hidden, and optionally selected, and/or UV selected.

Will eventually be superseded by BM_uv_element_map_create().

Loosely based on uvedit_is_face_affected, but "bug-compatible" with previous code.

Definition at line 91 of file uvedit_islands.cc.

References BM_elem_flag_test, BM_ELEM_HIDDEN, BM_ELEM_SELECT, and uvedit_face_select_test().

Referenced by bm_mesh_calc_uv_islands().