80 lines
2.9 KiB
C++
80 lines
2.9 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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/** \file
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* \ingroup bli
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*/
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/* The boolean functions in Blenlib use exact arithmetic, so require GMP. */
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#ifdef WITH_GMP
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# include "BLI_mesh_intersect.hh"
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# include <functional>
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namespace blender::meshintersect {
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/**
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* Enum values after BOOLEAN_NONE need to match BMESH_ISECT_BOOLEAN_... values in
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* editmesh_intersect.c. */
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enum class BoolOpType {
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None = -1,
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/* Aligned with #BooleanModifierOp. */
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Intersect = 0,
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Union = 1,
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Difference = 2,
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};
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/**
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* Do the boolean operation op on the mesh pm_in.
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* The boolean operation has \a nshapes input shapes. Each is a disjoint subset of the input mesh.
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* The shape_fn argument, when applied to an input face argument, says which shape it is in
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* (should be a value from -1 to `nshapes - 1`: if -1, it is not part of any shape).
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* The use_self argument says whether or not the function should assume that faces in the
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* same shape intersect - if the argument is true, such self-intersections will be found.
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* Sometimes the caller has already done a triangulation of the faces,
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* and if so, *pm_triangulated contains a triangulation: if non-null, it contains a mesh
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* of triangles, each of whose orig_field says which face in pm that triangle belongs to.
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* pm argument isn't `const` because we may populate its verts (for debugging).
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* Same goes for the pm_triangulated argument.
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* The output #IMesh will have faces whose orig fields map back to faces and edges in
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* the input mesh.
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*/
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IMesh boolean_mesh(IMesh &imesh,
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BoolOpType op,
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int nshapes,
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std::function<int(int)> shape_fn,
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bool use_self,
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IMesh *imesh_triangulated,
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IMeshArena *arena);
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/**
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* This is like boolean, but operates on #IMesh's whose faces are all triangles.
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* It is exposed mainly for unit testing, at the moment: boolean_mesh() uses
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* it to do most of its work.
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*/
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IMesh boolean_trimesh(IMesh &tm_in,
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BoolOpType op,
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int nshapes,
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std::function<int(int)> shape_fn,
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bool use_self,
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IMeshArena *arena);
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} // namespace blender::meshintersect
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#endif /* WITH_GMP */
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