147 lines
3.4 KiB
C++
147 lines
3.4 KiB
C++
#include "MultiPoint.hpp"
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namespace Slic3r {
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void
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MultiPoint::scale(double factor)
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{
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for (Points::iterator it = points.begin(); it != points.end(); ++it) {
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(*it).scale(factor);
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}
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}
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void
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MultiPoint::translate(double x, double y)
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{
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for (Points::iterator it = points.begin(); it != points.end(); ++it) {
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(*it).translate(x, y);
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}
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}
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void
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MultiPoint::rotate(double angle, Point* center)
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{
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for (Points::iterator it = points.begin(); it != points.end(); ++it) {
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(*it).rotate(angle, center);
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}
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}
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void
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MultiPoint::reverse()
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{
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std::reverse(this->points.begin(), this->points.end());
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}
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Point*
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MultiPoint::first_point() const
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{
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return new Point(this->points.front());
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}
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double
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MultiPoint::length() const
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{
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Lines lines = this->lines();
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double len = 0;
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for (Lines::iterator it = lines.begin(); it != lines.end(); ++it) {
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len += it->length();
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}
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return len;
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}
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bool
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MultiPoint::is_valid() const
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{
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return this->points.size() >= 2;
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}
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void
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MultiPoint::simplify(double tolerance)
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{
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this->points = MultiPoint::_douglas_peucker(this->points, tolerance);
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}
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Points
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MultiPoint::_douglas_peucker(Points &points, double tolerance)
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{
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Points results;
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double dmax = 0;
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int index = 0;
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Line full(points.front(), points.back());
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for (Points::const_iterator it = points.begin() + 1; it != points.end(); ++it) {
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double d = it->distance_to(full);
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if (d > dmax) {
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index = it - points.begin();
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dmax = d;
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}
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}
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if (dmax >= tolerance) {
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Points dp0;
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dp0.reserve(index + 1);
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dp0.insert(dp0.end(), points.begin(), points.begin() + index + 1);
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Points dp1 = MultiPoint::_douglas_peucker(dp0, tolerance);
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results.reserve(results.size() + dp1.size() - 1);
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results.insert(results.end(), dp1.begin(), dp1.end() - 1);
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dp0.clear();
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dp0.reserve(points.size() - index + 1);
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dp0.insert(dp0.end(), points.begin() + index, points.end());
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dp1 = MultiPoint::_douglas_peucker(dp0, tolerance);
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results.reserve(results.size() + dp1.size());
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results.insert(results.end(), dp1.begin(), dp1.end());
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} else {
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results.push_back(points.front());
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results.push_back(points.back());
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}
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return results;
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}
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#ifdef SLIC3RXS
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void
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MultiPoint::from_SV(SV* poly_sv)
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{
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AV* poly_av = (AV*)SvRV(poly_sv);
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const unsigned int num_points = av_len(poly_av)+1;
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this->points.resize(num_points);
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for (unsigned int i = 0; i < num_points; i++) {
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SV** point_sv = av_fetch(poly_av, i, 0);
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this->points[i].from_SV_check(*point_sv);
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}
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}
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void
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MultiPoint::from_SV_check(SV* poly_sv)
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{
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if (sv_isobject(poly_sv) && (SvTYPE(SvRV(poly_sv)) == SVt_PVMG)) {
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*this = *(MultiPoint*)SvIV((SV*)SvRV( poly_sv ));
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} else {
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this->from_SV(poly_sv);
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}
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}
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SV*
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MultiPoint::to_AV() {
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const unsigned int num_points = this->points.size();
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AV* av = newAV();
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av_extend(av, num_points-1);
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for (unsigned int i = 0; i < num_points; i++) {
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av_store(av, i, this->points[i].to_SV_ref());
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}
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return newRV_noinc((SV*)av);
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}
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SV*
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MultiPoint::to_SV_pureperl() const {
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const unsigned int num_points = this->points.size();
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AV* av = newAV();
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av_extend(av, num_points-1);
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for (unsigned int i = 0; i < num_points; i++) {
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av_store(av, i, this->points[i].to_SV_pureperl());
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}
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return newRV_noinc((SV*)av);
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}
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#endif
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}
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