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/*
* 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 */
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