diff options
Diffstat (limited to 'source/blender/editors/uvedit/uvedit_ops.c')
| -rw-r--r-- | source/blender/editors/uvedit/uvedit_ops.c | 391 |
1 files changed, 206 insertions, 185 deletions
diff --git a/source/blender/editors/uvedit/uvedit_ops.c b/source/blender/editors/uvedit/uvedit_ops.c index 0b5d6592426..74a9989f550 100644 --- a/source/blender/editors/uvedit/uvedit_ops.c +++ b/source/blender/editors/uvedit/uvedit_ops.c @@ -372,6 +372,198 @@ typedef enum eUVWeldAlign { UV_WELD, } eUVWeldAlign; +static bool uvedit_uv_align_weld(Scene *scene, + BMesh *bm, + const eUVWeldAlign tool, + const float cent[2]) +{ + bool changed = false; + const int cd_loop_uv_offset = CustomData_get_offset(&bm->ldata, CD_MLOOPUV); + + BMIter iter; + BMFace *efa; + BM_ITER_MESH (efa, &iter, bm, BM_FACES_OF_MESH) { + if (!uvedit_face_visible_test(scene, efa)) { + continue; + } + + BMIter liter; + BMLoop *l; + BM_ITER_ELEM (l, &liter, efa, BM_LOOPS_OF_FACE) { + if (!uvedit_uv_select_test(scene, l, cd_loop_uv_offset)) { + continue; + } + MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); + if (ELEM(tool, UV_ALIGN_X, UV_WELD)) { + if (luv->uv[0] != cent[0]) { + luv->uv[0] = cent[0]; + changed = true; + } + } + if (ELEM(tool, UV_ALIGN_Y, UV_WELD)) { + if (luv->uv[1] != cent[1]) { + luv->uv[1] = cent[1]; + changed = true; + } + } + } + } + return changed; +} + +/** Bitwise-or together, then choose #MLoopUV with highest value. */ +typedef enum eUVEndPointPrecedence { + UVEP_INVALID = 0, + UVEP_SELECTED = (1 << 0), + UVEP_PINNED = (1 << 1), /* i.e. Pinned verts are preferred to selected. */ +} eUVEndPointPrecedence; + +static eUVEndPointPrecedence uvedit_line_update_get_precedence(const MLoopUV *luv) +{ + eUVEndPointPrecedence precedence = UVEP_SELECTED; + if (luv->flag & MLOOPUV_PINNED) { + precedence |= UVEP_PINNED; + } + return precedence; +} + +/** + * Helper to find two endpoints (`a` and `b`) which have higher precedence, and are far apart. + * Note that is only a heuristic and won't always find the best two endpoints. + */ +static bool uvedit_line_update_endpoint(const MLoopUV *luv, + float uv_a[2], + eUVEndPointPrecedence *prec_a, + float uv_b[2], + eUVEndPointPrecedence *prec_b) +{ + eUVEndPointPrecedence flags = uvedit_line_update_get_precedence(luv); + + float len_sq_a = len_squared_v2v2(uv_a, luv->uv); + float len_sq_b = len_squared_v2v2(uv_b, luv->uv); + + /* Caching the value of `len_sq_ab` is unlikely to be faster than recalculating. + * Profile before optimizing. */ + float len_sq_ab = len_squared_v2v2(uv_a, uv_b); + + if ((*prec_a < flags && 0.0f < len_sq_b) || (*prec_a == flags && len_sq_ab < len_sq_b)) { + *prec_a = flags; + copy_v2_v2(uv_a, luv->uv); + return true; + } + + if ((*prec_b < flags && 0.0f < len_sq_a) || (*prec_b == flags && len_sq_ab < len_sq_a)) { + *prec_b = flags; + copy_v2_v2(uv_b, luv->uv); + return true; + } + + return false; +} + +/** + * Find two end extreme points to specify a line, then straighten `len` elements + * by moving UVs on the X-axis, Y-axis, or the closest point on the line segment. + */ +static bool uvedit_uv_straighten_elements(const UvElement *element, + const int len, + const int cd_loop_uv_offset, + const eUVWeldAlign tool) +{ + float uv_start[2]; + float uv_end[2]; + eUVEndPointPrecedence prec_start = UVEP_INVALID; + eUVEndPointPrecedence prec_end = UVEP_INVALID; + + /* Find start and end of line. */ + for (int i = 0; i < 10; i++) { /* Heuristic to prevent infinite loop. */ + bool update = false; + for (int j = 0; j < len; j++) { + MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(element[j].l, cd_loop_uv_offset); + update |= uvedit_line_update_endpoint(luv, uv_start, &prec_start, uv_end, &prec_end); + } + if (!update) { + break; + } + } + + if (prec_start == UVEP_INVALID || prec_end == UVEP_INVALID) { + return false; /* Unable to find two endpoints. */ + } + + float a = 0.0f; /* Similar to "slope". */ + eUVWeldAlign tool_local = tool; + + if (tool_local == UV_STRAIGHTEN_X) { + if (uv_start[1] == uv_end[1]) { + /* Caution, different behavior outside line segment. */ + tool_local = UV_STRAIGHTEN; + } + else { + a = (uv_end[0] - uv_start[0]) / (uv_end[1] - uv_start[1]); + } + } + else if (tool_local == UV_STRAIGHTEN_Y) { + if (uv_start[0] == uv_end[0]) { + /* Caution, different behavior outside line segment. */ + tool_local = UV_STRAIGHTEN; + } + else { + a = (uv_end[1] - uv_start[1]) / (uv_end[0] - uv_start[0]); + } + } + + bool changed = false; + for (int j = 0; j < len; j++) { + MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(element[j].l, cd_loop_uv_offset); + /* Projection of point (x, y) over line (x1, y1, x2, y2) along X axis: + * new_y = (y2 - y1) / (x2 - x1) * (x - x1) + y1 + * Maybe this should be a BLI func? Or is it already existing? + * Could use interp_v2_v2v2, but not sure it's worth it here. */ + if (tool_local == UV_STRAIGHTEN_X) { + luv->uv[0] = a * (luv->uv[1] - uv_start[1]) + uv_start[0]; + } + else if (tool_local == UV_STRAIGHTEN_Y) { + luv->uv[1] = a * (luv->uv[0] - uv_start[0]) + uv_start[1]; + } + else { + closest_to_line_segment_v2(luv->uv, luv->uv, uv_start, uv_end); + } + changed = true; /* TODO: Did the UV actually move? */ + } + return changed; +} + +/** + * Group selected UVs into islands, then apply uvedit_uv_straighten_elements to each island. + */ +static bool uvedit_uv_straighten(Scene *scene, BMesh *bm, eUVWeldAlign tool) +{ + const int cd_loop_uv_offset = CustomData_get_offset(&bm->ldata, CD_MLOOPUV); + if (cd_loop_uv_offset == -1) { + return false; + } + + UvElementMap *element_map = BM_uv_element_map_create(bm, scene, true, false, true); + if (element_map == NULL) { + return false; + } + + bool changed = false; + + /* Loop backwards to simplify logic. */ + int j1 = element_map->totalUVs; + for (int i = element_map->totalIslands - 1; i >= 0; --i) { + int j0 = element_map->islandIndices[i]; + changed |= uvedit_uv_straighten_elements( + element_map->buf + j0, j1 - j0, cd_loop_uv_offset, tool); + j1 = j0; + } + + BM_uv_element_map_free(element_map); + return changed; +} + static void uv_weld_align(bContext *C, eUVWeldAlign tool) { Scene *scene = CTX_data_scene(C); @@ -429,194 +621,12 @@ static void uv_weld_align(bContext *C, eUVWeldAlign tool) continue; } - const int cd_loop_uv_offset = CustomData_get_offset(&em->bm->ldata, CD_MLOOPUV); - - if (ELEM(tool, UV_ALIGN_X, UV_WELD)) { - BMIter iter, liter; - BMFace *efa; - BMLoop *l; - - BM_ITER_MESH (efa, &iter, em->bm, BM_FACES_OF_MESH) { - if (!uvedit_face_visible_test(scene, efa)) { - continue; - } - - BM_ITER_ELEM (l, &liter, efa, BM_LOOPS_OF_FACE) { - if (uvedit_uv_select_test(scene, l, cd_loop_uv_offset)) { - MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); - luv->uv[0] = cent[0]; - changed = true; - } - } - } - } - - if (ELEM(tool, UV_ALIGN_Y, UV_WELD)) { - BMIter iter, liter; - BMFace *efa; - BMLoop *l; - - BM_ITER_MESH (efa, &iter, em->bm, BM_FACES_OF_MESH) { - if (!uvedit_face_visible_test(scene, efa)) { - continue; - } - - BM_ITER_ELEM (l, &liter, efa, BM_LOOPS_OF_FACE) { - if (uvedit_uv_select_test(scene, l, cd_loop_uv_offset)) { - MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); - luv->uv[1] = cent[1]; - changed = true; - } - } - } + if (ELEM(tool, UV_ALIGN_AUTO, UV_ALIGN_X, UV_ALIGN_Y, UV_WELD)) { + changed |= uvedit_uv_align_weld(scene, em->bm, tool, cent); } if (ELEM(tool, UV_STRAIGHTEN, UV_STRAIGHTEN_X, UV_STRAIGHTEN_Y)) { - BMEdge *eed; - BMLoop *l; - BMVert *eve; - BMVert *eve_start; - BMIter iter, liter, eiter; - - /* clear tag */ - BM_mesh_elem_hflag_disable_all(em->bm, BM_VERT, BM_ELEM_TAG, false); - - /* tag verts with a selected UV */ - BM_ITER_MESH (eve, &iter, em->bm, BM_VERTS_OF_MESH) { - BM_ITER_ELEM (l, &liter, eve, BM_LOOPS_OF_VERT) { - if (!uvedit_face_visible_test(scene, l->f)) { - continue; - } - - if (uvedit_uv_select_test(scene, l, cd_loop_uv_offset)) { - BM_elem_flag_enable(eve, BM_ELEM_TAG); - break; - } - } - } - - /* flush vertex tags to edges */ - BM_ITER_MESH (eed, &iter, em->bm, BM_EDGES_OF_MESH) { - BM_elem_flag_set( - eed, - BM_ELEM_TAG, - (BM_elem_flag_test(eed->v1, BM_ELEM_TAG) && BM_elem_flag_test(eed->v2, BM_ELEM_TAG))); - } - - /* find a vertex with only one tagged edge */ - eve_start = NULL; - BM_ITER_MESH (eve, &iter, em->bm, BM_VERTS_OF_MESH) { - int tot_eed_tag = 0; - BM_ITER_ELEM (eed, &eiter, eve, BM_EDGES_OF_VERT) { - if (BM_elem_flag_test(eed, BM_ELEM_TAG)) { - tot_eed_tag++; - } - } - - if (tot_eed_tag == 1) { - eve_start = eve; - break; - } - } - - if (eve_start) { - BMVert **eve_line = NULL; - BMVert *eve_next = NULL; - BLI_array_declare(eve_line); - int i; - - eve = eve_start; - - /* walk over edges, building an array of verts in a line */ - while (eve) { - BLI_array_append(eve_line, eve); - /* don't touch again */ - BM_elem_flag_disable(eve, BM_ELEM_TAG); - - eve_next = NULL; - - /* find next eve */ - BM_ITER_ELEM (eed, &eiter, eve, BM_EDGES_OF_VERT) { - if (BM_elem_flag_test(eed, BM_ELEM_TAG)) { - BMVert *eve_other = BM_edge_other_vert(eed, eve); - if (BM_elem_flag_test(eve_other, BM_ELEM_TAG)) { - /* this is a tagged vert we didn't walk over yet, step onto it */ - eve_next = eve_other; - break; - } - } - } - - eve = eve_next; - } - - /* now we have all verts, make into a line */ - if (BLI_array_len(eve_line) > 2) { - - /* we know the returns from these must be valid */ - const float *uv_start = uvedit_first_selected_uv_from_vertex( - scene, eve_line[0], cd_loop_uv_offset); - const float *uv_end = uvedit_first_selected_uv_from_vertex( - scene, eve_line[BLI_array_len(eve_line) - 1], cd_loop_uv_offset); - /* For UV_STRAIGHTEN_X & UV_STRAIGHTEN_Y modes */ - float a = 0.0f; - eUVWeldAlign tool_local = tool; - - if (tool_local == UV_STRAIGHTEN_X) { - if (uv_start[1] == uv_end[1]) { - tool_local = UV_STRAIGHTEN; - } - else { - a = (uv_end[0] - uv_start[0]) / (uv_end[1] - uv_start[1]); - } - } - else if (tool_local == UV_STRAIGHTEN_Y) { - if (uv_start[0] == uv_end[0]) { - tool_local = UV_STRAIGHTEN; - } - else { - a = (uv_end[1] - uv_start[1]) / (uv_end[0] - uv_start[0]); - } - } - - /* go over all verts except for endpoints */ - for (i = 0; i < BLI_array_len(eve_line); i++) { - BM_ITER_ELEM (l, &liter, eve_line[i], BM_LOOPS_OF_VERT) { - if (!uvedit_face_visible_test(scene, l->f)) { - continue; - } - - if (uvedit_uv_select_test(scene, l, cd_loop_uv_offset)) { - MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); - /* Projection of point (x, y) over line (x1, y1, x2, y2) along X axis: - * new_y = (y2 - y1) / (x2 - x1) * (x - x1) + y1 - * Maybe this should be a BLI func? Or is it already existing? - * Could use interp_v2_v2v2, but not sure it's worth it here. */ - if (tool_local == UV_STRAIGHTEN_X) { - luv->uv[0] = a * (luv->uv[1] - uv_start[1]) + uv_start[0]; - } - else if (tool_local == UV_STRAIGHTEN_Y) { - luv->uv[1] = a * (luv->uv[0] - uv_start[0]) + uv_start[1]; - } - else { - closest_to_line_segment_v2(luv->uv, luv->uv, uv_start, uv_end); - } - changed = true; - } - } - } - } - else { - /* error - not a line, needs 3+ points. */ - } - - if (eve_line) { - MEM_freeN(eve_line); - } - } - else { - /* error - can't find an endpoint. */ - } + changed |= uvedit_uv_straighten(scene, em->bm, tool); } if (changed) { @@ -1026,6 +1036,12 @@ static bool uv_snap_cursor_to_selection(Scene *scene, return ED_uvedit_center_multi(scene, objects_edit, objects_len, sima->cursor, sima->around); } +static void uv_snap_cursor_to_origin(float uvco[2]) +{ + uvco[0] = 0; + uvco[1] = 0; +} + static int uv_snap_cursor_exec(bContext *C, wmOperator *op) { SpaceImage *sima = CTX_wm_space_image(C); @@ -1048,6 +1064,10 @@ static int uv_snap_cursor_exec(bContext *C, wmOperator *op) MEM_freeN(objects); break; } + case 2: + uv_snap_cursor_to_origin(sima->cursor); + changed = true; + break; } if (!changed) { @@ -1064,6 +1084,7 @@ static void UV_OT_snap_cursor(wmOperatorType *ot) static const EnumPropertyItem target_items[] = { {0, "PIXELS", 0, "Pixels", ""}, {1, "SELECTED", 0, "Selected", ""}, + {2, "ORIGIN", 0, "Origin", ""}, {0, NULL, 0, NULL, NULL}, }; |