67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
// Begin License:
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// Copyright (C) 2006-2008 Tobias Sargeant (tobias.sargeant@gmail.com).
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// All rights reserved.
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//
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// This file is part of the Carve CSG Library (http://carve-csg.com/)
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//
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// This file may be used under the terms of the GNU General Public
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// License version 2.0 as published by the Free Software Foundation
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// and appearing in the file LICENSE.GPL2 included in the packaging of
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// this file.
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//
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// This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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// INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE.
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// End:
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#if defined(HAVE_CONFIG_H)
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# include <carve_config.h>
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#endif
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#include <carve/geom.hpp>
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#include <carve/polyline.hpp>
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namespace carve {
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namespace line {
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carve::geom3d::AABB Polyline::aabb() const {
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return carve::geom3d::AABB(vbegin(), vend(), vec_adapt_vertex_ptr());
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}
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PolylineSet::PolylineSet(const std::vector<carve::geom3d::Vector> &points) {
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vertices.resize(points.size());
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for (size_t i = 0; i < points.size(); ++i) vertices[i].v = points[i];
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aabb.fit(points.begin(), points.end(), carve::geom3d::vec_adapt_ident());
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}
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void PolylineSet::sortVertices(const carve::geom3d::Vector &axis) {
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std::vector<std::pair<double, size_t> > temp;
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temp.reserve(vertices.size());
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for (size_t i = 0; i < vertices.size(); ++i) {
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temp.push_back(std::make_pair(dot(axis, vertices[i].v), i));
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}
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std::sort(temp.begin(), temp.end());
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std::vector<Vertex> vnew;
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std::vector<int> revmap;
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vnew.reserve(vertices.size());
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revmap.resize(vertices.size());
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for (size_t i = 0; i < vertices.size(); ++i) {
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vnew.push_back(vertices[temp[i].second]);
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revmap[temp[i].second] = i;
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}
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for (line_iter i = lines.begin(); i != lines.end(); ++i) {
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Polyline &l = *(*i);
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for (size_t j = 0; j < l.edges.size(); ++j) {
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PolylineEdge &e = *l.edges[j];
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if (e.v1) e.v1 = &vnew[revmap[vertexToIndex_fast(e.v1)]];
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if (e.v2) e.v2 = &vnew[revmap[vertexToIndex_fast(e.v2)]];
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}
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}
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vertices.swap(vnew);
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}
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}
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}
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