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#include <iostream>
#include <2geom/path.h>
#include <2geom/svg-path-parser.h>
#include <2geom/path-intersection.h>
#include <2geom/basic-intersection.h>
#include <2geom/pathvector.h>
#include <2geom/exception.h>
#include <2geom/sbasis-geometric.h>
#include <2geom/path-intersection.h>
#include <2geom/nearest-time.h>
#include <2geom/circle.h>
#include <cstdlib>
#include <map>
#include <vector>
#include <algorithm>
#include <toys/path-cairo.h>
#include <toys/toy-framework-2.h>
#include <2geom/bezier-to-sbasis.h>
#include <2geom/ord.h>
using namespace Geom;
using namespace std;
class IntersectDataTester: public Toy {
int nb_paths;
int nb_curves_per_path;
int degree;
std::vector<PointSetHandle> paths_handles;
std::vector<Slider> sliders;
void draw(cairo_t *cr, std::ostringstream *notify, int width, int height, bool save, std::ostringstream *timer_stream) override {
cairo_set_source_rgba (cr, 0., 0., 0, 1);
cairo_set_line_width (cr, 1);
std::vector<D2<SBasis> > pieces;
PathVector paths;
for (int i = 0; i < nb_paths; i++){
paths.push_back(Path(paths_handles[i].pts[0]));
for (unsigned j = 0; j+degree < paths_handles[i].size(); j+=degree){
D2<SBasis> c = handles_to_sbasis(paths_handles[i].pts.begin()+j, degree);
paths[i].append(c);
pieces.push_back(c);
}
}
cairo_path(cr, paths);
cairo_set_source_rgba (cr, 0., 0., 0, 1);
cairo_set_line_width (cr, 1);
cairo_stroke(cr);
double r = sliders[0].value();
D2<SBasis> B = pieces[0];
Piecewise<D2<SBasis> > offset_curve0 = Piecewise<D2<SBasis> >(pieces[0])+rot90(unitVector(derivative(pieces[0])))*(-r);
Piecewise<D2<SBasis> > offset_curve1 = Piecewise<D2<SBasis> >(pieces[1])+rot90(unitVector(derivative(pieces[1])))*(-r);
//cairo_pw_d2_sb(cr, offset_curve0);
//cairo_pw_d2_sb(cr, offset_curve1);
//cairo_stroke(cr);
Path p0 = path_from_piecewise(offset_curve0, 0.1)[0];
Path p1 = path_from_piecewise(offset_curve1, 0.1)[0];
Crossings cs = crossings(p0, p1);
for(auto & c : cs) {
*notify << c.ta << ", " << c.tb << '\n';
Point cp =p0(c.ta);
//draw_circ(cr, cp);
//cairo_stroke(cr);
double p0pt = nearest_time(cp, pieces[0]);
double p1pt = nearest_time(cp, pieces[1]);
Circle circ(cp[0], cp[1], r);
//cairo_arc(cr, circ.center(X), circ.center(Y), circ.ray(), 0, 2*M_PI);
std::unique_ptr<EllipticalArc> eap(
circ.arc(pieces[0](p0pt), pieces[0](1), pieces[1](p1pt)) );
D2<SBasis> easb = eap->toSBasis();
cairo_d2_sb(cr, easb);
cairo_stroke(cr);
}
Point ends[2];
if (0)
for(int endi = 0; endi < 2; endi++) {
D2<SBasis> dist = pieces[endi]-pieces[0].at1();
*notify << dist << "\n";
vector<double> locs = roots(dot(dist,dist) - SBasis(r*r));
for(double loc : locs) {
//draw_circ(cr, pieces[endi](locs[i]));
*notify << loc << ' ';
}
if(locs.size()) {
std::sort(locs.begin(), locs.end());
if (endi)
ends[endi] = pieces[endi](locs[0]);
else
ends[endi] = pieces[endi](locs.back());
draw_circ(cr, ends[endi]);
}
}
Toy::draw(cr, notify, width, height, save, timer_stream);
}
public:
IntersectDataTester(int paths, int curves_in_path, int degree) :
nb_paths(paths), nb_curves_per_path(curves_in_path), degree(degree) {
for (int i = 0; i < nb_paths; i++){
paths_handles.emplace_back();
}
for(int i = 0; i < nb_paths; i++){
for(int j = 0; j < (nb_curves_per_path*degree)+1; j++){
paths_handles[i].push_back(uniform()*400, 100+ uniform()*300);
}
handles.push_back(&paths_handles[i]);
}
sliders.emplace_back(0.0, 100.0, 1, 30.0, "min radius");
sliders.emplace_back(0.0, 100.0, 1, 0.0, "ray chooser");
sliders.emplace_back(0.0, 100.0, 1, 0.0, "area chooser");
handles.push_back(&(sliders[0]));
handles.push_back(&(sliders[1]));
handles.push_back(&(sliders[2]));
sliders[0].geometry(Point(50, 20), 250);
sliders[1].geometry(Point(50, 50), 250);
sliders[2].geometry(Point(50, 80), 250);
}
void first_time(int /*argc*/, char** /*argv*/) override {
}
};
int main(int argc, char **argv) {
unsigned paths=1;
unsigned curves_in_path=2;
unsigned degree=3;
if(argc > 3)
sscanf(argv[3], "%d", °ree);
if(argc > 2)
sscanf(argv[2], "%d", &curves_in_path);
if(argc > 1)
sscanf(argv[1], "%d", &paths);
init(argc, argv, new IntersectDataTester(paths, curves_in_path, degree));
return 0;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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