c1bc70b711
A lot of files were missing copyright field in the header and
the Blender Foundation contributed to them in a sense of bug
fixing and general maintenance.
This change makes it explicit that those files are at least
partially copyrighted by the Blender Foundation.
Note that this does not make it so the Blender Foundation is
the only holder of the copyright in those files, and developers
who do not have a signed contract with the foundation still
hold the copyright as well.
Another aspect of this change is using SPDX format for the
header. We already used it for the license specification,
and now we state it for the copyright as well, following the
FAQ:
https://reuse.software/faq/
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bmesh
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*
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* Wrapper around #BM_mesh_bisect_plane
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*/
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#include "MEM_guardedalloc.h"
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#include "BLI_math.h"
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#include "BLI_utildefines.h"
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#include "BLI_utildefines_stack.h"
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#include "bmesh.h"
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#include "bmesh_tools.h"
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#include "intern/bmesh_operators_private.h" /* own include */
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#define ELE_NEW 1
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#define ELE_CUT 2
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#define ELE_INPUT 4
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void bmo_bisect_plane_exec(BMesh *bm, BMOperator *op)
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{
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const float dist = BMO_slot_float_get(op->slots_in, "dist");
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const bool use_snap_center = BMO_slot_bool_get(op->slots_in, "use_snap_center");
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const bool clear_outer = BMO_slot_bool_get(op->slots_in, "clear_outer");
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const bool clear_inner = BMO_slot_bool_get(op->slots_in, "clear_inner");
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float plane_co[3];
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float plane_no[3];
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float plane[4];
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BMO_slot_vec_get(op->slots_in, "plane_co", plane_co);
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BMO_slot_vec_get(op->slots_in, "plane_no", plane_no);
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if (is_zero_v3(plane_no)) {
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BMO_error_raise(bm, op, BMO_ERROR_CANCEL, "Zero normal given");
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return;
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}
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plane_from_point_normal_v3(plane, plane_co, plane_no);
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/* tag geometry to bisect */
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BM_mesh_elem_hflag_disable_all(bm, BM_EDGE | BM_FACE, BM_ELEM_TAG, false);
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BMO_slot_buffer_hflag_enable(bm, op->slots_in, "geom", BM_EDGE | BM_FACE, BM_ELEM_TAG, false);
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BMO_slot_buffer_flag_enable(bm, op->slots_in, "geom", BM_ALL_NOLOOP, ELE_INPUT);
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BM_mesh_bisect_plane(bm, plane, use_snap_center, true, ELE_CUT, ELE_NEW, dist);
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if (clear_outer || clear_inner) {
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/* Use an array of vertices because 'geom' contains both verts and edges that may use them.
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* Removing a vert may remove and edge which is later checked by #BMO_ITER.
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* over-allocate the total possible vert count. */
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const int vert_arr_max = min_ii(bm->totvert, BMO_slot_buffer_len(op->slots_in, "geom"));
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BMVert **vert_arr = MEM_mallocN(sizeof(*vert_arr) * (size_t)vert_arr_max, __func__);
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BMOIter siter;
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BMVert *v;
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float plane_inner[4];
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float plane_outer[4];
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STACK_DECLARE(vert_arr);
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copy_v3_v3(plane_outer, plane);
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copy_v3_v3(plane_inner, plane);
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plane_outer[3] = plane[3] - dist;
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plane_inner[3] = plane[3] + dist;
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STACK_INIT(vert_arr, vert_arr_max);
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BMO_ITER (v, &siter, op->slots_in, "geom", BM_VERT) {
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if ((clear_outer && plane_point_side_v3(plane_outer, v->co) > 0.0f) ||
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(clear_inner && plane_point_side_v3(plane_inner, v->co) < 0.0f))
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{
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STACK_PUSH(vert_arr, v);
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}
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}
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while ((v = STACK_POP(vert_arr))) {
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BM_vert_kill(bm, v);
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}
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MEM_freeN(vert_arr);
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}
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BMO_slot_buffer_from_enabled_flag(
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bm, op, op->slots_out, "geom.out", BM_ALL_NOLOOP, ELE_NEW | ELE_INPUT);
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BMO_slot_buffer_from_enabled_flag(
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bm, op, op->slots_out, "geom_cut.out", BM_VERT | BM_EDGE, ELE_CUT);
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}
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