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#include <2geom/basic-intersection.h>
#include <2geom/d2.h>
#include <2geom/sbasis.h>
#include <2geom/sbasis-2d.h>
#include <2geom/bezier-to-sbasis.h>
#include <toys/path-cairo.h>
#include <toys/toy-framework-2.h>
using std::vector;
using namespace Geom;
class SelfIntersect: public Toy {
PointSetHandle psh;
void draw(cairo_t *cr, std::ostringstream *notify, int width, int height, bool save, std::ostringstream *timer_stream) override {
cairo_set_line_width (cr, 0.5);
cairo_set_source_rgba (cr, 0., 0., 0, 1);
D2<SBasis> A = psh.asBezier();
//Rect Ar = *bounds_fast(A);
cairo_d2_sb(cr, A);
cairo_stroke(cr);
std::vector<std::pair<double, double> > all_si;
find_self_intersections(all_si, A);
cairo_stroke(cr);
cairo_set_source_rgba (cr, 1., 0., 1, 1);
for(auto & i : all_si) {
draw_handle(cr, A(i.first));
}
cairo_stroke(cr);
*notify << "total intersections: " << all_si.size();
Toy::draw(cr, notify, width, height, save,timer_stream);
}
public:
SelfIntersect (unsigned bez_ord) {
handles.push_back(&psh);
for(unsigned i = 0; i < bez_ord; i++)
psh.push_back(uniform()*400, uniform()*400);
}
};
int main(int argc, char **argv) {
unsigned bez_ord=5;
if(argc > 1)
sscanf(argv[1], "%d", &bez_ord);
init(argc, argv, new SelfIntersect(bez_ord));
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=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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