/usr/include/dolfin/intersection/PrimitiveIntersector.h is in libdolfin1.0-dev 1.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | // Copyright (C) 2010 Andre Massing
//
// This file is part of DOLFIN.
//
// DOLFIN is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// DOLFIN 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
//
// First added: 2010-02-09
// Last changed: 2011-08-09
#ifndef __PRIMITIVE_INTERSECTOR_H
#define __PRIMITIVE_INTERSECTOR_H
namespace dolfin
{
class MeshEntity;
class Point;
/// This class implements an intersection detection, detecting
/// whether two given (arbitrary) meshentities intersect.
class PrimitiveIntersector
{
public:
/// Computes whether two mesh entities intersect using an inexact
/// geometry kernel which is fast but may suffer from floating
/// point precision
static bool do_intersect(const MeshEntity& entity_1,
const MeshEntity& entity_2);
/// Computes whether a mesh entity and point intersect using an
/// inexact geometry kernel which is fast but may suffer from
/// floating point precision
static bool do_intersect(const MeshEntity& entity_1,
const Point& point);
/// Computes whether two mesh entities intersect using an exact
/// geometry kernel which is slow but always correct
static bool do_intersect_exact(const MeshEntity& entity_1,
const MeshEntity& entity_2);
/// Computes whether a mesh entity and point intersect using an
/// exact geometry kernel which is slow but always correct
static bool do_intersect_exact(const MeshEntity& entity_1,
const Point& point);
private:
// Helper classes to deal with all combination in a N and not N*N
// way. Just declaration, definition and instantation takes place
// in the corresponding cpp file, where this helper function are
// actually needed.
template <typename K, typename T, typename U >
static bool do_intersect_with_kernel(const T& entity_1,
const U& entity_2);
template<typename K, typename T>
static bool do_intersect_with_kernel(const T& entity_1,
const MeshEntity& entity_2);
};
}
#endif
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