dust3d/thirdparty/carve-1.4.0/lib/intersection.cpp

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// Begin License:
// Copyright (C) 2006-2008 Tobias Sargeant (tobias.sargeant@gmail.com).
// All rights reserved.
//
// This file is part of the Carve CSG Library (http://carve-csg.com/)
//
// This file may be used under the terms of the GNU General Public
// License version 2.0 as published by the Free Software Foundation
// and appearing in the file LICENSE.GPL2 included in the packaging of
// this file.
//
// This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
// INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE.
// End:
#if defined(HAVE_CONFIG_H)
# include <carve_config.h>
#endif
#include <algorithm>
#include <carve/carve.hpp>
#include <carve/poly.hpp>
#include <carve/timing.hpp>
#include <carve/intersection.hpp>
void carve::csg::Intersections::collect(const IObj &obj,
std::vector<const carve::poly::Polyhedron::vertex_t *> *collect_v,
std::vector<const carve::poly::Polyhedron::edge_t *> *collect_e,
std::vector<const carve::poly::Polyhedron::face_t *> *collect_f) const {
carve::csg::Intersections::const_iterator i = find(obj);
if (i != end()) {
Intersections::mapped_type::const_iterator a, b;
for (a = (*i).second.begin(), b = (*i).second.end(); a != b; ++a) {
switch ((*a).first.obtype) {
case carve::csg::IObj::OBTYPE_VERTEX:
if (collect_v) collect_v->push_back((*a).first.vertex);
break;
case carve::csg::IObj::OBTYPE_EDGE:
if (collect_e) collect_e->push_back((*a).first.edge);
break;
case carve::csg::IObj::OBTYPE_FACE:
if (collect_f) collect_f->push_back((*a).first.face);
break;
default:
throw carve::exception("should not happen " __FILE__ ":" XSTR(__LINE__));
}
}
}
}
bool carve::csg::Intersections::intersectsFace(const carve::poly::Polyhedron::vertex_t *v, const carve::poly::Polyhedron::face_t *f) const {
const_iterator i = find(v);
if (i != end()) {
mapped_type::const_iterator a, b;
for (a = (*i).second.begin(), b = (*i).second.end(); a != b; ++a) {
switch ((*a).first.obtype) {
case IObj::OBTYPE_VERTEX: {
for (size_t j = 0; j < f->nVertices(); ++j) if (f->vertex(j) == (*a).first.vertex) return true;
break;
}
case carve::csg::IObj::OBTYPE_EDGE: {
for (size_t j = 0; j < f->nEdges(); ++j) if (f->edge(j) == (*a).first.edge) return true;
break;
}
case carve::csg::IObj::OBTYPE_FACE: {
if ((*a).first.face == f) return true;
break;
}
default:
throw carve::exception("should not happen " __FILE__ ":" XSTR(__LINE__));
}
}
}
return false;
}