773 lines
25 KiB
C++
773 lines
25 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/csg.hpp>
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#include <list>
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#include <set>
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#include <iostream>
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#include <algorithm>
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#include "intersect_common.hpp"
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#include "intersect_classify_common.hpp"
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#if 0
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class edge_graph_t :
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public std::hash_map<const Vector *,
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std::pair<int, std::set<const Vector *> >,
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hash_vector_ptr> {
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public:
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typedef mapped_type data_type;
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};
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#if defined(CARVE_DEBUG)
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static void drawEdgeGraph(edge_graph_t &eg) {
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for (edge_graph_t::const_iterator
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j = eg.begin(), je = eg.end(); j != je; ++j) {
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const Vector *v1 = (*j).first;
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for (std::set<const Vector *>::const_iterator
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k = (*j).second.second.begin(), ke = (*j).second.second.end();
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k != ke;
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++k) {
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const Vector *v2 = (*k);
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HOOK(drawEdge(v1, v2, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 3.0f););
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}
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}
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}
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#endif
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static bool find_cycles(edge_graph_t &eg, std::list<V2Set> &cycles) {
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for (edge_graph_t::const_iterator
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i = eg.begin(), e = eg.end(); i != e; ++i) {
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if ((*i).second.second.size() != 1) {
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#if defined(CARVE_DEBUG)
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// HOOK(drawEdgeGraph(eg););
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#endif
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std::cerr << "WARNING:edge loop graph does not consist of simple cycles"
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<< std::endl;
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return false;
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}
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}
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while (eg.size()) {
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#if defined(CARVE_DEBUG)
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std::cerr << "eg.size(): " << eg.size() << std::endl;
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#endif
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std::list<const Vector *> path;
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edge_graph_t::iterator i;
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int c = 0;
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const Vector *v;
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i = eg.begin();
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path.push_back(v = (*i).first);
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(*i).second.first = c++;
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while (1) {
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const Vector *v2 = *((*i).second.second.begin());
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path.push_back(v2);
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i = eg.find(v2);
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if (i == eg.end()) {
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break;
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}
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if ((*i).second.first < c) {
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break;
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}
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(*i).second.first = c++;
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}
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#if defined(CARVE_DEBUG)
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std::cerr << (i != eg.end() ? "found" : "didn't find") << " cycle "
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<< std::endl
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<< "path.size(): " << path.size()
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<< std::endl;
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#endif
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if (i != eg.end()) {
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c = (*i).second.first;
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cycles.push_back(V2Set());
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}
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const Vector *src = NULL, *tgt = NULL;
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for (std::list<const Vector *>::const_iterator
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j = path.begin(), je = path.end(); j != je; ++j) {
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tgt = (*j);
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if (src) {
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edge_graph_t::iterator k = eg.find(src);
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if ((*k).second.first >= c) {
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cycles.back().insert(std::make_pair(src, tgt));
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}
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(*k).second.first = INT_MAX;
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(*k).second.second.erase(tgt);
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if ((*k).second.second.size() == 0) {
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eg.erase(k);
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}
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}
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src = tgt;
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}
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}
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return true;
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}
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static bool eliminate_simple(const LoopEdges &edge_map,
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V2Set &edges,
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std::set<FaceLoop *> &loops,
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V2Set &extra_edges) {
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const Vector *v1, *v2;
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loops.clear();
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#if defined(CARVE_DEBUG)
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std::cerr << edges.size() << " edges to eliminate" << std::endl;
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#endif
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while (edges.size()) {
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LoopEdges::const_iterator i = edge_map.find(*(edges.begin()));
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if (i == edge_map.end()) {
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std::pair<const Vector *, const Vector *> t = *(edges.begin());
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return false;
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}
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if ((*i).second.size() != 1) {
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throw intersect_exception(
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"eliminate_simple failed: topology too complex");
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}
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FaceLoop *to_remove = *((*i).second.begin());
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#if defined(CARVE_DEBUG)
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std::cerr << " removing face loop " << to_remove << std::endl;
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#endif
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loops.insert(to_remove);
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v1 = to_remove->vertices[to_remove->vertices.size() - 1];
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for (unsigned j = 0; j < to_remove->vertices.size(); ++j) {
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v2 = to_remove->vertices[j];
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V2Set::iterator v = edges.find(std::make_pair(v1, v2));
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if (v != edges.end()) {
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#if defined(CARVE_DEBUG)
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std::cerr << " removing edge " << v1 << "-" << v2 << std::endl;
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#endif
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edges.erase(v);
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} else {
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#if defined(CARVE_DEBUG)
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std::cerr << " adding edge " << v2 << "-" << v1 << std::endl;
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#endif
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edges.insert(std::make_pair(v2, v1));
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extra_edges.insert(std::make_pair(std::min(v1, v2),
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std::max(v1, v2)));
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}
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v1 = v2;
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}
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#if defined(CARVE_DEBUG)
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std::cerr << " " << edges.size() << " edges remain." << std::endl;
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#endif
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}
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#if defined(CARVE_DEBUG)
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std::cerr << "eliminate succeeded" << std::endl;
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#endif
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return true;
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}
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static void classifyEdges(const V2Set &edges,
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const Polyhedron *poly,
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int &n_in, int &n_on, int &n_out) {
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n_in = n_on = n_out = 0;
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for (V2Set::const_iterator
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i = edges.begin(), e = edges.end(); i != e; ++i) {
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Vector c((*(*i).first + *(*i).second) / 2.0);
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switch (poly->containsVertex(c, NULL)) {
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case POINT_IN: n_in++; break;
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case POINT_OUT: n_out++; break;
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case POINT_ON: n_on++; break;
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default: break;
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}
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}
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}
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static FaceClass faceClassificationBasedOnEdges(const V2Set &edges,
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const Polyhedron *poly,
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FaceClass on_hint) {
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int n_in, n_on, n_out;
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classifyEdges(edges, poly, n_in, n_on, n_out);
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std::cerr << ">>> classification: n_in: " << n_in << " n_on: " << n_on << " n_out: " << n_out << std::endl;
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CARVE_ASSERT(n_in == (int)edges.size() || n_out == (int)edges.size() || n_on == (int)edges.size());
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if (n_in) return FACE_IN;
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if (n_out) return FACE_OUT;
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return on_hint;
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}
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static void classifySimpleOnFaces(FaceLoopList &a_face_loops,
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FaceLoopList &b_face_loops,
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const Polyhedron *poly_a,
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const Polyhedron *poly_b,
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CSG::Collector &collector) {
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LoopEdges edge_map;
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for (FaceLoop *i = b_face_loops.head; i; i = i->next) {
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edge_map.addFaceLoop(i);
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}
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for (FaceLoop *i = a_face_loops.head; i;) {
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LoopEdges::const_iterator t;
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t = edge_map.find(std::make_pair(i->vertices[0], i->vertices[1]));
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if (t != edge_map.end()) {
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for (std::list<FaceLoop *>::const_iterator
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u = (*t).second.begin(), ue = (*t).second.end(); u != ue; ++u) {
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FaceLoop *j(*u);
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int k = is_same(i->vertices, j->vertices);
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CARVE_ASSERT(k != -1);
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if (k == +1) {
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collector.collect(i->orig_face,
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i->vertices,
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i->orig_face->normal,
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true,
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FACE_ON_ORIENT_OUT);
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collector.collect(j->orig_face,
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j->vertices,
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j->orig_face->normal,
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false,
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FACE_ON_ORIENT_OUT);
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edge_map.removeFaceLoop(j);
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i = a_face_loops.remove(i);
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b_face_loops.remove(j);
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goto next_loop;
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}
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}
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}
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t = edge_map.find(std::make_pair(i->vertices[1], i->vertices[0]));
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if (t != edge_map.end()) {
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for (std::list<FaceLoop *>::const_iterator
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u = (*t).second.begin(), ue = (*t).second.end(); u != ue; ++u) {
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FaceLoop *j(*u);
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int k = is_same(i->vertices, j->vertices);
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CARVE_ASSERT(k != +1);
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if (k == -1) {
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collector.collect(i->orig_face,
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i->vertices,
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i->orig_face->normal,
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true,
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FACE_ON_ORIENT_IN);
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collector.collect(j->orig_face,
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j->vertices,
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j->orig_face->normal,
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false,
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FACE_ON_ORIENT_IN);
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edge_map.removeFaceLoop(j);
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i = a_face_loops.remove(i);
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b_face_loops.remove(j);
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goto next_loop;
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}
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}
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}
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i = i->next;
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next_loop:;
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}
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}
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static void classifyOnFaces_2(FaceLoopList &a_face_loops,
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FaceLoopList &b_face_loops,
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const VertexClassification &vclass,
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const Polyhedron *poly_a,
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const Polyhedron *poly_b,
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CSG::Collector &collector) {
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LoopEdges edge_map_a;
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LoopEdges edge_map_b;
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std::list<V2Set> cycles;
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for (FaceLoop *i = a_face_loops.head; i; i = i->next) {
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edge_map_a.addFaceLoop(i);
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}
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for (FaceLoop *i = b_face_loops.head; i; i = i->next) {
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edge_map_b.addFaceLoop(i);
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}
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edge_graph_t edge_graph;
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edge_graph.clear();
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for (LoopEdges::const_iterator
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i = edge_map_a.begin(), e = edge_map_a.end();
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i != e;
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++i) {
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const Vector *v1((*i).first.first), *v2((*i).first.second);
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LoopEdges::const_iterator j = edge_map_b.find(std::make_pair(v2, v1));
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if (j != edge_map_b.end()) {
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edge_graph_t::data_type &data(edge_graph[v1]);
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data.first = INT_MAX;
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data.second.insert(v2);
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#if defined(CARVE_DEBUG)
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std::cerr << "--- " << v1 << "-" << v2 << std::endl;
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#endif
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}
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}
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cycles.clear();
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if (!find_cycles(edge_graph, cycles)) return;
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#if defined(CARVE_DEBUG)
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std::cerr << cycles.size() << " reverse cycles" << std::endl;
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#endif
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for (std::list<V2Set>::iterator
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i = cycles.begin(), e = cycles.end(); i != e; ++i) {
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std::set<FaceLoop *> a_loopset, b_loopset;
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V2Set b_cycle;
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V2Set a_extra_edges, b_extra_edges;
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for (V2Set::const_iterator
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j = (*i).begin(), je = (*i).end(); j != je; ++j) {
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b_cycle.insert(std::make_pair((*j).second, (*j).first));
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}
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if (eliminate_simple(edge_map_a, (*i), a_loopset, a_extra_edges) &&
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eliminate_simple(edge_map_b, b_cycle, b_loopset, b_extra_edges)) {
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#if defined(CARVE_DEBUG)
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std::cerr << "paired "
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<< a_loopset.size() << " poly_a faces with "
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<< b_loopset.size() << " poly_b faces in reverse loop ("
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<< a_extra_edges.size() << " extra edges in set a, "
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<< b_extra_edges.size() << " extra edges in set b)"
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<< std::endl;
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#endif
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FaceClass a_class, b_class;
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a_class = faceClassificationBasedOnEdges(a_extra_edges,
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poly_b,
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FACE_ON_ORIENT_IN);
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b_class = faceClassificationBasedOnEdges(b_extra_edges,
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poly_a,
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FACE_ON_ORIENT_IN);
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#if defined(CARVE_DEBUG)
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std::cerr << "a_class = " << ENUM(a_class) << std::endl
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<< "b_class = " << ENUM(b_class) << std::endl;
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#endif
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if (a_class == FACE_ON_ORIENT_IN && b_class != FACE_ON_ORIENT_IN)
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a_class = b_class;
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else if (a_class != FACE_ON_ORIENT_IN && b_class == FACE_ON_ORIENT_IN)
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b_class = a_class;
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#if defined(CARVE_DEBUG)
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std::cerr << "modified a_class = " << ENUM(a_class) << std::endl
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<< " b_class = " << ENUM(b_class) << std::endl;
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#endif
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for (std::set<FaceLoop *>::const_iterator
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j = a_loopset.begin(), je = a_loopset.end(); j != je; ++j) {
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collector.collect((*j)->orig_face,
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(*j)->vertices,
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(*j)->orig_face->normal,
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true,
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a_class);
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edge_map_a.removeFaceLoop((*j));
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a_face_loops.remove((*j));
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}
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for (std::set<FaceLoop *>::const_iterator
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j = b_loopset.begin(), je = b_loopset.end(); j != je; ++j) {
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collector.collect((*j)->orig_face,
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(*j)->vertices,
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(*j)->orig_face->normal,
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false,
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a_class);
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edge_map_b.removeFaceLoop((*j));
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b_face_loops.remove((*j));
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}
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} else {
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#if defined(CARVE_DEBUG)
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std::cerr << "pairing failed" << std::endl;
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#endif
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}
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}
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edge_graph.clear();
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for (LoopEdges::const_iterator
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i = edge_map_a.begin(), e = edge_map_a.end();
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i != e;
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++i) {
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const Vector *v1((*i).first.first), *v2((*i).first.second);
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LoopEdges::const_iterator j = edge_map_b.find(std::make_pair(v1, v2));
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if (j != edge_map_b.end()) {
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edge_graph_t::data_type &data(edge_graph[v1]);
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data.first = INT_MAX;
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data.second.insert(v2);
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#if defined(CARVE_DEBUG)
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std::cerr << "+++ " << v1 << "-" << v2 << std::endl;
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#endif
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}
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}
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cycles.clear();
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if (!find_cycles(edge_graph, cycles)) return;
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#if defined(CARVE_DEBUG)
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std::cerr << cycles.size() << " forward cycles" << std::endl;
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#endif
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for (std::list<V2Set>::iterator
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i = cycles.begin(), e = cycles.end(); i != e; ++i) {
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std::set<FaceLoop *> a_loopset, b_loopset;
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V2Set b_cycle((*i));
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V2Set a_extra_edges, b_extra_edges;
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if (eliminate_simple(edge_map_a, (*i), a_loopset, a_extra_edges) &&
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eliminate_simple(edge_map_b, b_cycle, b_loopset, b_extra_edges)) {
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#if defined(CARVE_DEBUG)
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std::cerr << "paired "
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<< a_loopset.size() << " poly_a faces with "
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<< b_loopset.size() << " poly_b faces in forward loop"
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<< a_extra_edges.size() << " extra edges in set a, "
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<< b_extra_edges.size() << " extra edges in set b)"
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<< std::endl;
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#endif
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FaceClass a_class, b_class;
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a_class = faceClassificationBasedOnEdges(a_extra_edges,
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poly_b,
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FACE_ON_ORIENT_OUT);
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b_class = faceClassificationBasedOnEdges(b_extra_edges,
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poly_a,
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FACE_ON_ORIENT_OUT);
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#if defined(CARVE_DEBUG)
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std::cerr << "a_class = " << ENUM(a_class) << std::endl
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<< "b_class = " << ENUM(b_class) << std::endl;
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#endif
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if (a_class == FACE_ON_ORIENT_OUT && b_class != FACE_ON_ORIENT_OUT)
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a_class = (FaceClass)-b_class;
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else if (a_class != FACE_ON_ORIENT_OUT && b_class == FACE_ON_ORIENT_OUT)
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b_class = (FaceClass)-a_class;
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#if defined(CARVE_DEBUG)
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std::cerr << "modified a_class = " << ENUM(a_class) << std::endl
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<< " b_class = " << ENUM(b_class) << std::endl;
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#endif
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for (std::set<FaceLoop *>::const_iterator
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j = a_loopset.begin(), je = a_loopset.end(); j != je; ++j) {
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collector.collect((*j)->orig_face,
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(*j)->vertices,
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(*j)->orig_face->normal,
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true,
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a_class);
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edge_map_a.removeFaceLoop((*j));
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a_face_loops.remove((*j));
|
|
}
|
|
for (std::set<FaceLoop *>::const_iterator
|
|
j = b_loopset.begin(), je = b_loopset.end(); j != je; ++j) {
|
|
collector.collect((*j)->orig_face,
|
|
(*j)->vertices,
|
|
(*j)->orig_face->normal,
|
|
false,
|
|
b_class);
|
|
edge_map_b.removeFaceLoop((*j));
|
|
b_face_loops.remove((*j));
|
|
}
|
|
} else {
|
|
#if defined(CARVE_DEBUG)
|
|
std::cerr << "pairing failed" << std::endl;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
void classifyEasyFaces(FaceLoopList &face_loops,
|
|
VertexClassification &vclass,
|
|
const Polyhedron *other_poly,
|
|
int other_poly_num,
|
|
Intersections &intersections,
|
|
CSG::Collector &collector) {
|
|
|
|
|
|
for (FaceLoop *i = face_loops.head; i;) {
|
|
unsigned j;
|
|
|
|
const std::vector<const Vector *> &f_loop(i->vertices);
|
|
|
|
PointClass pc = POINT_ON;
|
|
unsigned test = 0;
|
|
for (j = 0; j < f_loop.size(); j++) {
|
|
PointClass temp = vclass[f_loop[j]].cls[other_poly_num];
|
|
if (temp == POINT_ON) continue;
|
|
pc = temp;
|
|
test = j;
|
|
if (pc != POINT_UNK) break;
|
|
}
|
|
|
|
if (pc != POINT_ON) {
|
|
// EASY CASE
|
|
|
|
// IF a face uses a POINT_OUT vertex, it is OUT, and no face
|
|
// vertices may be POINT_IN
|
|
|
|
// IF a face uses a POINT_IN vertex, it is IN, and no face
|
|
// vertices may be POINT_OUT
|
|
|
|
if (pc == POINT_UNK) {
|
|
pc = other_poly->containsVertex(*f_loop[test]);
|
|
#if defined(CARVE_DEBUG)
|
|
std::cerr << "testing " << f_loop[test] << " pc = " << pc << std::endl;
|
|
#endif
|
|
|
|
#if defined(CARVE_DEBUG)
|
|
if (pc != POINT_IN && pc != POINT_OUT) {
|
|
HOOK(drawFaceLoop(f_loop, i->orig_face->normal, 1.0, 0.0, 0.0, 0.5, true););
|
|
HOOK(drawFaceLoopWireframe(f_loop, i->orig_face->normal, 1.0, 1.0, 0.0, 1.0););
|
|
HOOK(drawPoint(f_loop[test], 1, 1, 1, 1, 8.0););
|
|
}
|
|
#endif
|
|
CARVE_ASSERT(pc == POINT_OUT || pc == POINT_IN);
|
|
}
|
|
|
|
for (j = 0; j < f_loop.size(); j++) {
|
|
PC2 &pc2(vclass[f_loop[j]]);
|
|
if (pc2.cls[other_poly_num] == POINT_UNK) {
|
|
pc2.cls[other_poly_num] = pc;
|
|
} else {
|
|
CARVE_ASSERT(pc2.cls[other_poly_num] == POINT_ON || pc2.cls[other_poly_num] == pc);
|
|
}
|
|
}
|
|
|
|
// this face loop is trivially either IN or OUT.
|
|
|
|
{
|
|
std::vector<const Face *> ifaces;
|
|
intersections.commonFaces(f_loop, ifaces);
|
|
if (ifaces.size()) {
|
|
std::cerr << "ERROR: JUST CLASSIFIED A FACE AS IN OR OUT WHEN "
|
|
"ifaces.size() == " << ifaces.size() << " [ ";
|
|
|
|
for (std::vector<const Face *>::const_iterator
|
|
x = ifaces.begin(), xe = ifaces.end(); x != xe; ++x) {
|
|
std::cerr << (*x) << " ";
|
|
}
|
|
std::cerr << "]" << std::endl;
|
|
}
|
|
}
|
|
|
|
if (pc == POINT_IN) {
|
|
collector.collect(i->orig_face,
|
|
f_loop,
|
|
i->orig_face->normal,
|
|
other_poly_num == 1,
|
|
FACE_IN);
|
|
} else {
|
|
collector.collect(i->orig_face,
|
|
f_loop,
|
|
i->orig_face->normal,
|
|
other_poly_num == 1,
|
|
FACE_OUT);
|
|
}
|
|
|
|
i = face_loops.remove(i);
|
|
} else {
|
|
i = i ->next;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void carve::csg::CSG::classifyFaceGroupsSimple(const V2Set &shared_edges,
|
|
VertexClassification &vclass,
|
|
const carve::poly::Polyhedron *poly_a,
|
|
FLGroupList &a_loops_grouped,
|
|
const LoopEdges &a_edge_map,
|
|
const carve::poly::Polyhedron *poly_b,
|
|
FLGroupList &b_loops_grouped,
|
|
const LoopEdges &b_edge_map,
|
|
Collector &collector) {
|
|
#if 0
|
|
// Old proto
|
|
void carve::csg::CSG::classifyFaces(carve::csg::FaceLoopList &a_face_loops,
|
|
size_t a_edge_count,
|
|
carve::csg::FaceLoopList &b_face_loops,
|
|
size_t b_edge_count,
|
|
VertexClassification &vclass,
|
|
const carve::poly::Polyhedron *poly_a,
|
|
const carve::poly::Polyhedron *poly_b,
|
|
Collector &collector);
|
|
|
|
std::cerr << "classify: "
|
|
<< a_face_loops.size() << " cases in polyhedron a"
|
|
<< std::endl;
|
|
std::cerr << "classify: "
|
|
<< b_face_loops.size() << " cases in polyhedron b"
|
|
<< std::endl;
|
|
|
|
classifyEasyFaces(a_face_loops, vclass, poly_b, 1, intersections, collector);
|
|
classifyEasyFaces(b_face_loops, vclass, poly_a, 0, intersections, collector);
|
|
|
|
#if 0 && defined(CARVE_DEBUG)
|
|
HOOK(drawFaceLoopList(a_face_loops, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f););
|
|
HOOK(drawFaceLoopList(b_face_loops, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f););
|
|
#endif
|
|
|
|
std::cerr << "classify: "
|
|
<< a_face_loops.size() << " hard cases in polyhedron a"
|
|
<< std::endl;
|
|
std::cerr << "classify: "
|
|
<< b_face_loops.size() << " hard cases in polyhedron b"
|
|
<< std::endl;
|
|
|
|
classifySimpleOnFaces(a_face_loops, b_face_loops, poly_a, poly_b, collector);
|
|
|
|
std::cerr << "classify: "
|
|
<< a_face_loops.size()
|
|
<< " after elimination of easy pairs: polyhedron a" << std::endl;
|
|
std::cerr << "classify: "
|
|
<< b_face_loops.size()
|
|
<< " after elimination of easy pairs: polyhedron b" << std::endl;
|
|
|
|
classifyOnFaces_2(a_face_loops,
|
|
b_face_loops,
|
|
vclass, poly_a,
|
|
poly_b,
|
|
collector);
|
|
|
|
std::cerr << "classify: " << a_face_loops.size() << " after elimination of hard pairs: polyhedron a" << std::endl;
|
|
std::cerr << "classify: " << b_face_loops.size() << " after elimination of hard pairs: polyhedron b" << std::endl;
|
|
|
|
FaceLoop *fla, *flb;
|
|
|
|
for (fla = a_face_loops.head; fla; fla = fla->next) {
|
|
const Face *f(fla->orig_face);
|
|
std::vector<const Vector *> &loop(fla->vertices);
|
|
std::vector<P2> proj;
|
|
proj.reserve(loop.size());
|
|
for (unsigned i = 0; i < loop.size(); ++i) {
|
|
proj.push_back((f->*(f->project))(*loop[i]));
|
|
}
|
|
P2 pv;
|
|
if (!pickContainedPoint(proj, pv)) {
|
|
CARVE_FAIL("pickContainedPoint failed");
|
|
}
|
|
Vector v = (f->*(f->unproject))(pv);
|
|
|
|
const Face *hit_face;
|
|
PointClass pc = poly_b->containsVertex(v, &hit_face);
|
|
|
|
FaceClass fc = FACE_ON;
|
|
|
|
if (pc != POINT_IN && pc != POINT_OUT) {
|
|
std::cerr << "WARNING: last resort classifier found an ON face"
|
|
<< std::endl;
|
|
}
|
|
|
|
switch (pc) {
|
|
case POINT_IN: fc = FACE_IN; break;
|
|
case POINT_OUT: fc = FACE_OUT; break;
|
|
case POINT_ON: {
|
|
double d = dot(hit_face->normal, f->normal);
|
|
fc = d < 0.0 ? FACE_ON_ORIENT_IN : FACE_ON_ORIENT_OUT;
|
|
break;
|
|
}
|
|
default:
|
|
CARVE_FAIL("should not happen");
|
|
}
|
|
|
|
// CARVE_ASSERT(pc == POINT_IN || pc == POINT_OUT);
|
|
#if defined(CARVE_DEBUG)
|
|
{
|
|
float r,g,b,a;
|
|
switch(fc) {
|
|
case FACE_IN: r=1; g=0; b=0; a=1; break;
|
|
case FACE_OUT: r=0; g=0; b=1; a=1; break;
|
|
case FACE_ON_ORIENT_OUT: r=1; g=1; b=0; a=1; break;
|
|
case FACE_ON_ORIENT_IN: r=0; g=1; b=1; a=1; break;
|
|
}
|
|
if (fc != FACE_IN && fc != FACE_OUT) {
|
|
HOOK(drawFaceLoopWireframe(loop, f->normal, r, g, b, a););
|
|
HOOK(drawPoint(&v, 1, 1, 1, 1, 30.0););
|
|
}
|
|
}
|
|
#endif
|
|
|
|
collector.collect(f, loop, f->normal, true, fc);
|
|
}
|
|
|
|
for (flb = b_face_loops.head; flb; flb = flb->next) {
|
|
const Face *f(flb->orig_face);
|
|
std::vector<const Vector *> &loop(flb->vertices);
|
|
std::vector<P2> proj;
|
|
proj.reserve(loop.size());
|
|
for (unsigned i = 0; i < loop.size(); ++i) {
|
|
proj.push_back((f->*(f->project))(*loop[i]));
|
|
}
|
|
P2 pv;
|
|
if (!pickContainedPoint(proj, pv)) {
|
|
CARVE_FAIL("pickContainedPoint failed");
|
|
}
|
|
Vector v = (f->*(f->unproject))(pv);
|
|
|
|
const Face *hit_face;
|
|
PointClass pc = poly_a->containsVertex(v, &hit_face);
|
|
|
|
FaceClass fc = FACE_ON;
|
|
|
|
if (pc != POINT_IN && pc != POINT_OUT) {
|
|
std::cerr << "WARNING: last resort classifier found an ON face"
|
|
<< std::endl;
|
|
}
|
|
|
|
switch (pc) {
|
|
case POINT_IN: fc = FACE_IN; break;
|
|
case POINT_OUT: fc = FACE_OUT; break;
|
|
case POINT_ON: {
|
|
double d = dot(hit_face->normal, f->normal);
|
|
fc = d < 0.0 ? FACE_ON_ORIENT_IN : FACE_ON_ORIENT_OUT;
|
|
break;
|
|
}
|
|
default:
|
|
CARVE_FAIL("should not happen");
|
|
}
|
|
|
|
// CARVE_ASSERT(pc == POINT_IN || pc == POINT_OUT);
|
|
#if defined(CARVE_DEBUG)
|
|
{
|
|
float r,g,b,a;
|
|
switch(fc) {
|
|
case FACE_IN: r=1; g=0; b=0; a=1; break;
|
|
case FACE_OUT: r=0; g=0; b=1; a=1; break;
|
|
case FACE_ON_ORIENT_OUT: r=1; g=1; b=0; a=1; break;
|
|
case FACE_ON_ORIENT_IN: r=0; g=1; b=1; a=1; break;
|
|
}
|
|
// HOOK(drawFaceLoop(loop, f->normal, r, g, b, a););
|
|
if (fc != FACE_IN && fc != FACE_OUT) {
|
|
HOOK(drawFaceLoopWireframe(loop, f->normal, r, g, b, a););
|
|
HOOK(drawPoint(&v, 1, 1, 1, 1, 30.0););
|
|
}
|
|
}
|
|
#endif
|
|
|
|
collector.collect(f, loop, f->normal, false, fc);
|
|
}
|
|
#endif
|
|
}
|