diff options
author | mattoverby <mattoverby@gmail.com> | 2020-08-28 23:00:01 +0300 |
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committer | mattoverby <mattoverby@gmail.com> | 2020-08-28 23:00:01 +0300 |
commit | 44819c69a4e702b224c4ba166def9e212bee6d92 (patch) | |
tree | 45f0349bd9ad29892d14b0f63d496b309cd32ed8 /source/blender/blenlib/BLI_mesh_boolean.hh | |
parent | 6c32148cd2ea90cde4d4e46beb5ad4969b044c49 (diff) | |
parent | 019cd2e56b377a35b1fa2c85aebe60fb8c495335 (diff) |
fixed submodulessoc-2020-soft-body
Diffstat (limited to 'source/blender/blenlib/BLI_mesh_boolean.hh')
-rw-r--r-- | source/blender/blenlib/BLI_mesh_boolean.hh | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_mesh_boolean.hh b/source/blender/blenlib/BLI_mesh_boolean.hh new file mode 100644 index 00000000000..693639f20f2 --- /dev/null +++ b/source/blender/blenlib/BLI_mesh_boolean.hh @@ -0,0 +1,79 @@ +/* + * 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. + */ + +#pragma once + +/** \file + * \ingroup bli + */ + +/* The boolean functions in Blenlib use exact arithmetic, so require GMP. */ +#ifdef WITH_GMP + +# include "BLI_mesh_intersect.hh" +# include <functional> + +namespace blender::meshintersect { + +/** + * Enum values after BOOLEAN_NONE need to match BMESH_ISECT_BOOLEAN_... values in + * editmesh_intersect.c. */ +enum class BoolOpType { + None = -1, + /* Aligned with #BooleanModifierOp. */ + Intersect = 0, + Union = 1, + Difference = 2, +}; + +/** + * Do the boolean operation op on the mesh pm_in. + * The boolean operation has nshapes input shapes. Each is a disjoint subset of the input mesh. + * The shape_fn argument, when applied to an input face argument, says which shape it is in + * (should be a value from -1 to nshapes - 1: if -1, it is not part of any shape). + * The use_self arg says whether or not the function should assume that faces in the + * same shape intersect - if the argument is true, such self-intersections will be found. + * Sometimes the caller has already done a triangulation of the faces, + * and if so, *pm_triangulated contains a triangulation: if non-null, it contains a mesh + * of triangles, each of whose orig_field says which face in pm that triangle belongs to. + * pm arg isn't const because we may populate its verts (for debugging). + * Same goes for the pm_triangulated arg. + * The output IMesh will have faces whose orig fields map back to faces and edges in + * the input mesh. + */ +IMesh boolean_mesh(IMesh &imesh, + BoolOpType op, + int nshapes, + std::function<int(int)> shape_fn, + bool use_self, + IMesh *pm_triangulated, + IMeshArena *arena); + +/** + * This is like boolean, but operates on IMesh's whose faces are all triangles. + * It is exposed mainly for unit testing, at the moment: boolean_mesh() uses + * it to do most of its work. + */ +IMesh boolean_trimesh(IMesh &trimesh, + BoolOpType op, + int nshapes, + std::function<int(int)> shape_fn, + bool use_self, + IMeshArena *arena); + +} // namespace blender::meshintersect + +#endif /* WITH_GMP */ |