824 lines
22 KiB
C++
824 lines
22 KiB
C++
// Area.cpp
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// Copyright 2011, Dan Heeks
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// This program is released under the BSD license. See the file COPYING for details.
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#include "Area.h"
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#include "AreaOrderer.h"
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#include <map>
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double CArea::m_accuracy = 0.01;
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double CArea::m_units = 1.0;
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bool CArea::m_clipper_simple = false;
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double CArea::m_clipper_clean_distance = 0.0;
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bool CArea::m_fit_arcs = true;
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int CArea::m_min_arc_points = 4;
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int CArea::m_max_arc_points = 100;
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double CArea::m_single_area_processing_length = 0.0;
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double CArea::m_processing_done = 0.0;
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bool CArea::m_please_abort = false;
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double CArea::m_MakeOffsets_increment = 0.0;
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double CArea::m_split_processing_length = 0.0;
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bool CArea::m_set_processing_length_in_split = false;
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double CArea::m_after_MakeOffsets_length = 0.0;
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//static const double PI = 3.1415926535897932;
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#define _CAREA_PARAM_DEFINE(_class,_type,_name) \
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_type CArea::get_##_name() {return _class::_name;}\
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void CArea::set_##_name(_type _name) {_class::_name = _name;}
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#define CAREA_PARAM_DEFINE(_type,_name) \
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_type CArea::get_##_name() {return m_##_name;}\
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void CArea::set_##_name(_type _name) {m_##_name = _name;}
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_CAREA_PARAM_DEFINE(Point,double,tolerance);
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CAREA_PARAM_DEFINE(bool,fit_arcs)
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CAREA_PARAM_DEFINE(bool,clipper_simple);
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CAREA_PARAM_DEFINE(double,clipper_clean_distance);
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CAREA_PARAM_DEFINE(double,accuracy);
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CAREA_PARAM_DEFINE(double,units);
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CAREA_PARAM_DEFINE(short,min_arc_points);
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CAREA_PARAM_DEFINE(short,max_arc_points);
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CAREA_PARAM_DEFINE(double,clipper_scale);
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void CArea::append(const CCurve& curve)
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{
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m_curves.push_back(curve);
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}
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void CArea::FitArcs(){
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for(std::list<CCurve>::iterator It = m_curves.begin(); It != m_curves.end(); It++)
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{
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CCurve& curve = *It;
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curve.FitArcs();
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}
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}
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Point CArea::NearestPoint(const Point& p)const
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{
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double best_dist = 0.0;
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Point best_point = Point(0, 0);
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for(std::list<CCurve>::const_iterator It = m_curves.begin(); It != m_curves.end(); It++)
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{
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const CCurve& curve = *It;
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Point near_point = curve.NearestPoint(p);
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double dist = near_point.dist(p);
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if(It == m_curves.begin() || dist < best_dist)
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{
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best_dist = dist;
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best_point = near_point;
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}
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}
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return best_point;
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}
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void CArea::ChangeStartToNearest(const Point *point, double min_dist)
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{
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for(std::list<CCurve>::iterator It=m_curves.begin(),ItNext=It;
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It != m_curves.end(); It=ItNext)
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{
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++ItNext;
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if(It->m_vertices.size()<=1)
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m_curves.erase(It);
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}
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if(m_curves.empty()) return;
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std::list<CCurve> curves;
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Point p;
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if(point) p =*point;
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if(min_dist < Point::tolerance)
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min_dist = Point::tolerance;
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while(m_curves.size()) {
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std::list<CCurve>::iterator It=m_curves.begin();
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std::list<CCurve>::iterator ItBest=It++;
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Point best_point = ItBest->NearestPoint(p);
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double best_dist = p.dist(best_point);
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for(; It != m_curves.end(); ++It)
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{
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const CCurve& curve = *It;
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Point near_point;
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double dist;
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if(min_dist>Point::tolerance && !curve.IsClosed()) {
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double d1 = curve.m_vertices.front().m_p.dist(p);
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double d2 = curve.m_vertices.back().m_p.dist(p);
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if(d1<d2) {
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dist = d1;
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near_point = curve.m_vertices.front().m_p;
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}else{
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dist = d2;
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near_point = curve.m_vertices.back().m_p;
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}
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}else{
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near_point = curve.NearestPoint(p);
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dist = near_point.dist(p);
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}
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if(dist < best_dist)
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{
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best_dist = dist;
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best_point = near_point;
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ItBest = It;
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}
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}
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if(ItBest->IsClosed()) {
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ItBest->ChangeStart(best_point);
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}else{
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double dfront = ItBest->m_vertices.front().m_p.dist(best_point);
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double dback = ItBest->m_vertices.back().m_p.dist(best_point);
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if(min_dist>Point::tolerance && dfront>min_dist && dback>min_dist) {
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ItBest->Break(best_point);
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m_curves.push_back(*ItBest);
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m_curves.back().ChangeEnd(best_point);
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ItBest->ChangeStart(best_point);
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}else if(dfront>dback)
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ItBest->Reverse();
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}
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curves.splice(curves.end(),m_curves,ItBest);
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p = curves.back().m_vertices.back().m_p;
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}
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m_curves.splice(m_curves.end(),curves);
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}
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void CArea::GetBox(CBox2D &box)
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{
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for(std::list<CCurve>::iterator It = m_curves.begin(); It != m_curves.end(); It++)
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{
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CCurve& curve = *It;
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curve.GetBox(box);
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}
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}
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void CArea::Reorder()
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{
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// curves may have been added with wrong directions
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// test all kurves to see which one are outsides and which are insides and
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// make sure outsides are anti-clockwise and insides are clockwise
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// returns 0, if the curves are OK
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// returns 1, if the curves are overlapping
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CAreaOrderer ao;
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for(std::list<CCurve>::iterator It = m_curves.begin(), ItNext=It; It != m_curves.end(); It=ItNext)
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{
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++ItNext;
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CCurve& curve = *It;
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if(!It->IsClosed())
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continue;
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ao.Insert(make_shared<CCurve>(curve));
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if(m_set_processing_length_in_split)
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{
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CArea::m_processing_done += (m_split_processing_length / m_curves.size());
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}
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m_curves.erase(It);
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}
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if(ao.m_top_level)
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ao.m_top_level->GetArea(*this);
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}
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class ZigZag
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{
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public:
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CCurve zig;
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CCurve zag;
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ZigZag(const CCurve& Zig, const CCurve& Zag):zig(Zig), zag(Zag){}
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};
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static double stepover_for_pocket = 0.0;
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static std::list<ZigZag> zigzag_list_for_zigs;
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static std::list<CCurve> *curve_list_for_zigs = NULL;
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static bool rightward_for_zigs = true;
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static double sin_angle_for_zigs = 0.0;
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static double cos_angle_for_zigs = 0.0;
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static double sin_minus_angle_for_zigs = 0.0;
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static double cos_minus_angle_for_zigs = 0.0;
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static double one_over_units = 0.0;
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static Point rotated_point(const Point &p)
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{
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return Point(p.x * cos_angle_for_zigs - p.y * sin_angle_for_zigs, p.x * sin_angle_for_zigs + p.y * cos_angle_for_zigs);
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}
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static Point unrotated_point(const Point &p)
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{
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return Point(p.x * cos_minus_angle_for_zigs - p.y * sin_minus_angle_for_zigs, p.x * sin_minus_angle_for_zigs + p.y * cos_minus_angle_for_zigs);
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}
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static CVertex rotated_vertex(const CVertex &v)
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{
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if(v.m_type)
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{
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return CVertex(v.m_type, rotated_point(v.m_p), rotated_point(v.m_c));
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}
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return CVertex(v.m_type, rotated_point(v.m_p), Point(0, 0));
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}
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static CVertex unrotated_vertex(const CVertex &v)
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{
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if(v.m_type)
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{
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return CVertex(v.m_type, unrotated_point(v.m_p), unrotated_point(v.m_c));
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}
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return CVertex(v.m_type, unrotated_point(v.m_p), Point(0, 0));
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}
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static void rotate_area(CArea &a)
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{
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for(std::list<CCurve>::iterator It = a.m_curves.begin(); It != a.m_curves.end(); It++)
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{
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CCurve& curve = *It;
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for(std::list<CVertex>::iterator CIt = curve.m_vertices.begin(); CIt != curve.m_vertices.end(); CIt++)
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{
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CVertex& vt = *CIt;
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vt = rotated_vertex(vt);
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}
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}
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}
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void test_y_point(int i, const Point& p, Point& best_p, bool &found, int &best_index, double y, bool left_not_right)
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{
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// only consider points at y
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if(fabs(p.y - y) < 0.002 * one_over_units)
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{
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if(found)
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{
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// equal high point
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if(left_not_right)
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{
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// use the furthest left point
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if(p.x < best_p.x)
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{
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best_p = p;
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best_index = i;
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}
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}
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else
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{
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// use the furthest right point
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if(p.x > best_p.x)
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{
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best_p = p;
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best_index = i;
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}
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}
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}
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else
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{
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best_p = p;
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best_index = i;
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found = true;
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}
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}
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}
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static void make_zig_curve(const CCurve& input_curve, double y0, double y)
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{
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CCurve curve(input_curve);
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if(rightward_for_zigs)
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{
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if(curve.IsClockwise())
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curve.Reverse();
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}
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else
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{
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if(!curve.IsClockwise())
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curve.Reverse();
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}
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// find a high point to start looking from
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Point top_left;
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int top_left_index = 0;
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bool top_left_found = false;
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Point top_right;
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int top_right_index = 0;
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bool top_right_found = false;
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Point bottom_left;
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int bottom_left_index = 0;
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bool bottom_left_found = false;
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int i =0;
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for(std::list<CVertex>::const_iterator VIt = curve.m_vertices.begin(); VIt != curve.m_vertices.end(); VIt++, i++)
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{
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const CVertex& vertex = *VIt;
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test_y_point(i, vertex.m_p, top_right, top_right_found, top_right_index, y, !rightward_for_zigs);
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test_y_point(i, vertex.m_p, top_left, top_left_found, top_left_index, y, rightward_for_zigs);
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test_y_point(i, vertex.m_p, bottom_left, bottom_left_found, bottom_left_index, y0, rightward_for_zigs);
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}
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int start_index = 0;
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int end_index = 0;
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int zag_end_index = 0;
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if(bottom_left_found)start_index = bottom_left_index;
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else if(top_left_found)start_index = top_left_index;
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if(top_right_found)
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{
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end_index = top_right_index;
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zag_end_index = top_left_index;
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}
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else
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{
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end_index = bottom_left_index;
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zag_end_index = bottom_left_index;
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}
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if(end_index <= start_index)end_index += (i-1);
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if(zag_end_index <= start_index)zag_end_index += (i-1);
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CCurve zig, zag;
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bool zig_started = false;
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bool zig_finished = false;
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bool zag_finished = false;
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int v_index = 0;
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for(int i = 0; i < 2; i++)
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{
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// process the curve twice because we don't know where it will start
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if(zag_finished)
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break;
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for(std::list<CVertex>::const_iterator VIt = curve.m_vertices.begin(); VIt != curve.m_vertices.end(); VIt++)
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{
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if(i == 1 && VIt == curve.m_vertices.begin())
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{
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continue;
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}
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const CVertex& vertex = *VIt;
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if(zig_finished)
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{
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zag.m_vertices.push_back(unrotated_vertex(vertex));
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if(v_index == zag_end_index)
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{
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zag_finished = true;
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break;
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}
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}
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else if(zig_started)
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{
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zig.m_vertices.push_back(unrotated_vertex(vertex));
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if(v_index == end_index)
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{
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zig_finished = true;
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if(v_index == zag_end_index)
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{
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zag_finished = true;
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break;
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}
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zag.m_vertices.push_back(unrotated_vertex(vertex));
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}
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}
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else
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{
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if(v_index == start_index)
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{
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zig.m_vertices.push_back(unrotated_vertex(vertex));
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zig_started = true;
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}
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}
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v_index++;
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}
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}
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if(zig_finished)
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zigzag_list_for_zigs.push_back(ZigZag(zig, zag));
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}
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void make_zig(const CArea &a, double y0, double y)
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{
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for(std::list<CCurve>::const_iterator It = a.m_curves.begin(); It != a.m_curves.end(); It++)
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{
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const CCurve &curve = *It;
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make_zig_curve(curve, y0, y);
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}
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}
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std::list< std::list<ZigZag> > reorder_zig_list_list;
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void add_reorder_zig(ZigZag &zigzag)
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{
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// look in existing lists
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// see if the zag is part of an existing zig
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if(zigzag.zag.m_vertices.size() > 1)
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{
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const Point& zag_e = zigzag.zag.m_vertices.front().m_p;
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bool zag_removed = false;
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for(std::list< std::list<ZigZag> >::iterator It = reorder_zig_list_list.begin(); It != reorder_zig_list_list.end() && !zag_removed; It++)
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{
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std::list<ZigZag> &zigzag_list = *It;
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for(std::list<ZigZag>::iterator It2 = zigzag_list.begin(); It2 != zigzag_list.end() && !zag_removed; It2++)
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{
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const ZigZag& z = *It2;
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for(std::list<CVertex>::const_iterator It3 = z.zig.m_vertices.begin(); It3 != z.zig.m_vertices.end() && !zag_removed; It3++)
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{
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const CVertex &v = *It3;
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if((fabs(zag_e.x - v.m_p.x) < (0.002 * one_over_units)) && (fabs(zag_e.y - v.m_p.y) < (0.002 * one_over_units)))
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{
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// remove zag from zigzag
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zigzag.zag.m_vertices.clear();
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zag_removed = true;
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}
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}
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}
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}
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}
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// see if the zigzag can join the end of an existing list
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const Point& zig_s = zigzag.zig.m_vertices.front().m_p;
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for(std::list< std::list<ZigZag> >::iterator It = reorder_zig_list_list.begin(); It != reorder_zig_list_list.end(); It++)
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{
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std::list<ZigZag> &zigzag_list = *It;
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const ZigZag& last_zigzag = zigzag_list.back();
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const Point& e = last_zigzag.zig.m_vertices.back().m_p;
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if((fabs(zig_s.x - e.x) < (0.002 * one_over_units)) && (fabs(zig_s.y - e.y) < (0.002 * one_over_units)))
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{
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zigzag_list.push_back(zigzag);
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return;
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}
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}
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// else add a new list
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std::list<ZigZag> zigzag_list;
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zigzag_list.push_back(zigzag);
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reorder_zig_list_list.push_back(zigzag_list);
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}
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void reorder_zigs()
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{
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for(std::list<ZigZag>::iterator It = zigzag_list_for_zigs.begin(); It != zigzag_list_for_zigs.end(); It++)
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{
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ZigZag &zigzag = *It;
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add_reorder_zig(zigzag);
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}
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zigzag_list_for_zigs.clear();
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for(std::list< std::list<ZigZag> >::iterator It = reorder_zig_list_list.begin(); It != reorder_zig_list_list.end(); It++)
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{
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std::list<ZigZag> &zigzag_list = *It;
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if(zigzag_list.size() == 0)continue;
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curve_list_for_zigs->push_back(CCurve());
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for(std::list<ZigZag>::const_iterator It = zigzag_list.begin(); It != zigzag_list.end();)
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{
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const ZigZag &zigzag = *It;
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for(std::list<CVertex>::const_iterator It2 = zigzag.zig.m_vertices.begin(); It2 != zigzag.zig.m_vertices.end(); It2++)
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{
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if(It2 == zigzag.zig.m_vertices.begin() && It != zigzag_list.begin())continue; // only add the first vertex if doing the first zig
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const CVertex &v = *It2;
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curve_list_for_zigs->back().m_vertices.push_back(v);
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}
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It++;
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if(It == zigzag_list.end())
|
|
{
|
|
for(std::list<CVertex>::const_iterator It2 = zigzag.zag.m_vertices.begin(); It2 != zigzag.zag.m_vertices.end(); It2++)
|
|
{
|
|
if(It2 == zigzag.zag.m_vertices.begin())continue; // don't add the first vertex of the zag
|
|
const CVertex &v = *It2;
|
|
curve_list_for_zigs->back().m_vertices.push_back(v);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
reorder_zig_list_list.clear();
|
|
}
|
|
|
|
static void zigzag(const CArea &input_a)
|
|
{
|
|
if(input_a.m_curves.size() == 0)
|
|
{
|
|
CArea::m_processing_done += CArea::m_single_area_processing_length;
|
|
return;
|
|
}
|
|
|
|
one_over_units = 1 / CArea::m_units;
|
|
|
|
CArea a(input_a);
|
|
rotate_area(a);
|
|
|
|
CBox2D b;
|
|
a.GetBox(b);
|
|
|
|
double x0 = b.MinX() - 1.0;
|
|
double x1 = b.MaxX() + 1.0;
|
|
|
|
double height = b.MaxY() - b.MinY();
|
|
int num_steps = int(height / stepover_for_pocket + 1);
|
|
double y = b.MinY();// + 0.1 * one_over_units;
|
|
Point null_point(0, 0);
|
|
rightward_for_zigs = true;
|
|
|
|
if(CArea::m_please_abort)return;
|
|
|
|
double step_percent_increment = 0.8 * CArea::m_single_area_processing_length / num_steps;
|
|
|
|
for(int i = 0; i<num_steps; i++)
|
|
{
|
|
double y0 = y;
|
|
y = y + stepover_for_pocket;
|
|
Point p0(x0, y0);
|
|
Point p1(x0, y);
|
|
Point p2(x1, y);
|
|
Point p3(x1, y0);
|
|
CCurve c;
|
|
c.m_vertices.push_back(CVertex(0, p0, null_point, 0));
|
|
c.m_vertices.push_back(CVertex(0, p1, null_point, 0));
|
|
c.m_vertices.push_back(CVertex(0, p2, null_point, 1));
|
|
c.m_vertices.push_back(CVertex(0, p3, null_point, 0));
|
|
c.m_vertices.push_back(CVertex(0, p0, null_point, 1));
|
|
CArea a2;
|
|
a2.m_curves.push_back(c);
|
|
a2.Intersect(a);
|
|
make_zig(a2, y0, y);
|
|
rightward_for_zigs = !rightward_for_zigs;
|
|
if(CArea::m_please_abort)return;
|
|
CArea::m_processing_done += step_percent_increment;
|
|
}
|
|
|
|
reorder_zigs();
|
|
CArea::m_processing_done += 0.2 * CArea::m_single_area_processing_length;
|
|
}
|
|
|
|
void CArea::SplitAndMakePocketToolpath(std::list<CCurve> &curve_list, const CAreaPocketParams ¶ms)const
|
|
{
|
|
CArea::m_processing_done = 0.0;
|
|
|
|
double save_units = CArea::m_units;
|
|
CArea::m_units = 1.0;
|
|
std::list<CArea> areas;
|
|
m_split_processing_length = 50.0; // jump to 50 percent after split
|
|
m_set_processing_length_in_split = true;
|
|
Split(areas);
|
|
m_set_processing_length_in_split = false;
|
|
CArea::m_processing_done = m_split_processing_length;
|
|
CArea::m_units = save_units;
|
|
|
|
if(areas.size() == 0)return;
|
|
|
|
double single_area_length = 50.0 / areas.size();
|
|
|
|
for(std::list<CArea>::iterator It = areas.begin(); It != areas.end(); It++)
|
|
{
|
|
CArea::m_single_area_processing_length = single_area_length;
|
|
CArea &ar = *It;
|
|
ar.MakePocketToolpath(curve_list, params);
|
|
}
|
|
}
|
|
|
|
void CArea::MakePocketToolpath(std::list<CCurve> &curve_list, const CAreaPocketParams ¶ms)const
|
|
{
|
|
double radians_angle = params.zig_angle * PI / 180;
|
|
sin_angle_for_zigs = sin(-radians_angle);
|
|
cos_angle_for_zigs = cos(-radians_angle);
|
|
sin_minus_angle_for_zigs = sin(radians_angle);
|
|
cos_minus_angle_for_zigs = cos(radians_angle);
|
|
stepover_for_pocket = params.stepover;
|
|
|
|
CArea a_offset = *this;
|
|
double current_offset = params.tool_radius + params.extra_offset;
|
|
|
|
a_offset.Offset(current_offset);
|
|
|
|
if(params.mode == ZigZagPocketMode || params.mode == ZigZagThenSingleOffsetPocketMode)
|
|
{
|
|
curve_list_for_zigs = &curve_list;
|
|
zigzag(a_offset);
|
|
}
|
|
else if(params.mode == SpiralPocketMode)
|
|
{
|
|
std::list<CArea> m_areas;
|
|
a_offset.Split(m_areas);
|
|
if(CArea::m_please_abort)return;
|
|
if(m_areas.size() == 0)
|
|
{
|
|
CArea::m_processing_done += CArea::m_single_area_processing_length;
|
|
return;
|
|
}
|
|
|
|
CArea::m_single_area_processing_length /= m_areas.size();
|
|
|
|
for(std::list<CArea>::iterator It = m_areas.begin(); It != m_areas.end(); It++)
|
|
{
|
|
CArea &a2 = *It;
|
|
a2.MakeOnePocketCurve(curve_list, params);
|
|
}
|
|
}
|
|
|
|
if(params.mode == SingleOffsetPocketMode || params.mode == ZigZagThenSingleOffsetPocketMode)
|
|
{
|
|
// add the single offset too
|
|
for(std::list<CCurve>::iterator It = a_offset.m_curves.begin(); It != a_offset.m_curves.end(); It++)
|
|
{
|
|
CCurve& curve = *It;
|
|
curve_list.push_back(curve);
|
|
}
|
|
}
|
|
}
|
|
|
|
void CArea::Split(std::list<CArea> &m_areas)const
|
|
{
|
|
if(HolesLinked())
|
|
{
|
|
for(std::list<CCurve>::const_iterator It = m_curves.begin(); It != m_curves.end(); It++)
|
|
{
|
|
const CCurve& curve = *It;
|
|
m_areas.push_back(CArea());
|
|
m_areas.back().m_curves.push_back(curve);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
CArea a = *this;
|
|
a.Reorder();
|
|
|
|
if(CArea::m_please_abort)return;
|
|
|
|
for(std::list<CCurve>::const_iterator It = a.m_curves.begin(); It != a.m_curves.end(); It++)
|
|
{
|
|
const CCurve& curve = *It;
|
|
if(curve.IsClockwise())
|
|
{
|
|
if(m_areas.size() > 0)
|
|
m_areas.back().m_curves.push_back(curve);
|
|
}
|
|
else
|
|
{
|
|
m_areas.push_back(CArea());
|
|
m_areas.back().m_curves.push_back(curve);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
double CArea::GetArea(bool always_add)const
|
|
{
|
|
// returns the area of the area
|
|
double area = 0.0;
|
|
for(std::list<CCurve>::const_iterator It = m_curves.begin(); It != m_curves.end(); It++)
|
|
{
|
|
const CCurve& curve = *It;
|
|
double a = curve.GetArea();
|
|
if(always_add)area += fabs(a);
|
|
else area += a;
|
|
}
|
|
return area;
|
|
}
|
|
|
|
eOverlapType GetOverlapType(const CCurve& c1, const CCurve& c2)
|
|
{
|
|
CArea a1;
|
|
a1.m_curves.push_back(c1);
|
|
CArea a2;
|
|
a2.m_curves.push_back(c2);
|
|
|
|
return GetOverlapType(a1, a2);
|
|
}
|
|
|
|
eOverlapType GetOverlapType(const CArea& a1, const CArea& a2)
|
|
{
|
|
CArea A1(a1);
|
|
|
|
A1.Subtract(a2);
|
|
if(A1.m_curves.size() == 0)
|
|
{
|
|
return eInside;
|
|
}
|
|
|
|
CArea A2(a2);
|
|
A2.Subtract(a1);
|
|
if(A2.m_curves.size() == 0)
|
|
{
|
|
return eOutside;
|
|
}
|
|
|
|
A1 = a1;
|
|
A1.Intersect(a2);
|
|
if(A1.m_curves.size() == 0)
|
|
{
|
|
return eSiblings;
|
|
}
|
|
|
|
return eCrossing;
|
|
}
|
|
|
|
bool IsInside(const Point& p, const CCurve& c)
|
|
{
|
|
CArea a;
|
|
a.m_curves.push_back(c);
|
|
return IsInside(p, a);
|
|
}
|
|
|
|
bool IsInside(const Point& p, const CArea& a)
|
|
{
|
|
CArea a2;
|
|
CCurve c;
|
|
c.m_vertices.push_back(CVertex(Point(p.x - 0.01, p.y - 0.01)));
|
|
c.m_vertices.push_back(CVertex(Point(p.x + 0.01, p.y - 0.01)));
|
|
c.m_vertices.push_back(CVertex(Point(p.x + 0.01, p.y + 0.01)));
|
|
c.m_vertices.push_back(CVertex(Point(p.x - 0.01, p.y + 0.01)));
|
|
c.m_vertices.push_back(CVertex(Point(p.x - 0.01, p.y - 0.01)));
|
|
a2.m_curves.push_back(c);
|
|
a2.Intersect(a);
|
|
if(fabs(a2.GetArea()) < 0.0004)return false;
|
|
return true;
|
|
}
|
|
|
|
void CArea::SpanIntersections(const Span& span, std::list<Point> &pts)const
|
|
{
|
|
// this returns all the intersections of this area with the given span, ordered along the span
|
|
|
|
// get all points where this area's curves intersect the span
|
|
std::list<Point> pts2;
|
|
for(std::list<CCurve>::const_iterator It = m_curves.begin(); It != m_curves.end(); It++)
|
|
{
|
|
const CCurve &c = *It;
|
|
c.SpanIntersections(span, pts2);
|
|
}
|
|
|
|
// order them along the span
|
|
std::multimap<double, Point> ordered_points;
|
|
for(std::list<Point>::iterator It = pts2.begin(); It != pts2.end(); It++)
|
|
{
|
|
Point &p = *It;
|
|
double t;
|
|
if(span.On(p, &t))
|
|
{
|
|
ordered_points.insert(std::make_pair(t, p));
|
|
}
|
|
}
|
|
|
|
// add them to the given list of points
|
|
for(std::multimap<double, Point>::iterator It = ordered_points.begin(); It != ordered_points.end(); It++)
|
|
{
|
|
Point p = It->second;
|
|
pts.push_back(p);
|
|
}
|
|
}
|
|
|
|
void CArea::CurveIntersections(const CCurve& curve, std::list<Point> &pts)const
|
|
{
|
|
// this returns all the intersections of this area with the given curve, ordered along the curve
|
|
std::list<Span> spans;
|
|
curve.GetSpans(spans);
|
|
for(std::list<Span>::iterator It = spans.begin(); It != spans.end(); It++)
|
|
{
|
|
Span& span = *It;
|
|
std::list<Point> pts2;
|
|
SpanIntersections(span, pts2);
|
|
for(std::list<Point>::iterator It = pts2.begin(); It != pts2.end(); It++)
|
|
{
|
|
Point &pt = *It;
|
|
if(pts.size() == 0)
|
|
{
|
|
pts.push_back(pt);
|
|
}
|
|
else
|
|
{
|
|
if(pt != pts.back())pts.push_back(pt);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class ThickLine
|
|
{
|
|
public:
|
|
CArea m_area;
|
|
CCurve m_curve;
|
|
|
|
ThickLine(const CCurve& curve)
|
|
{
|
|
m_curve = curve;
|
|
m_area.append(curve);
|
|
m_area.Thicken(0.001);
|
|
}
|
|
};
|
|
|
|
void CArea::InsideCurves(const CCurve& curve, std::list<CCurve> &curves_inside)const
|
|
{
|
|
//1. find the intersectionpoints between these two curves.
|
|
std::list<Point> pts;
|
|
CurveIntersections(curve, pts);
|
|
|
|
//2.seperate curve2 in multiple curves between these intersections.
|
|
std::list<CCurve> separate_curves;
|
|
curve.ExtractSeparateCurves(pts, separate_curves);
|
|
|
|
//3. if the midpoint of a seperate curve lies in a1, then we return it.
|
|
for(std::list<CCurve>::iterator It = separate_curves.begin(); It != separate_curves.end(); It++)
|
|
{
|
|
CCurve &curve = *It;
|
|
double length = curve.Perim();
|
|
Point mid_point = curve.PerimToPoint(length * 0.5);
|
|
if(IsInside(mid_point, *this))curves_inside.push_back(curve);
|
|
}
|
|
}
|