Circle_2 DT::global_largest_circumcircle_bruteforce(FH &face) const
{
Circle_2 largest(Point_2(0, 0), 0);
CDT::Face_iterator fi;
for (fi = dt.faces_begin(); fi != dt.faces_end(); ++fi) {
if (dt.is_infinite(fi)) continue;
if (!fi->info().main_face) continue;
Circle_2 c = fi->info().circle;
if (c.squared_radius() > largest.squared_radius()) {
largest = c;
face = fi;
}
}
return largest;
}
void DT::save_triangulation_eps(const char *fname, bool debug) const
{
std::ofstream os;
os.open(fname, std::ofstream::out | std::ofstream::trunc);
double scale = 512.0;
double radius = 3.0 / scale;
Point_2 BB[2];
if (debug) {
BB[0] = Point_2( -scale, -scale);
BB[1] = Point_2(2*scale, 2*scale);
} else {
BB[0] = Point_2(0, 0);
BB[1] = Point_2(scale, scale);
}
os << "%!PS-Adobe-3.1 EPSF-3.0\n";
os << "%%HiResBoundingBox: " << BB[0] << " " << BB[1] << "\n";
os << "%%BoundingBox: " << BB[0] << " " << BB[1] << "\n";
os << "%%CropBox: " << BB[0] << " " << BB[1] << "\n";
os << "/radius { " << radius << " } def\n";
os << "/p { radius 0 360 arc closepath fill stroke } def\n";
os << "gsave " << scale << " " << scale << " scale\n";
os << (1.0 / scale) << " setlinewidth\n";
// Faces
os << "0.75 0.75 0.75 setrgbcolor\n";
CDT::Face_iterator fi;
for (fi = dt.faces_begin(); fi != dt.faces_end(); ++fi) {
if (!fi->info().main_face) continue;
Point_2 p0 = fi->vertex(0)->point(),
p1 = fi->vertex(1)->point(),
p2 = fi->vertex(2)->point();
os << p0 << " moveto "
<< p1 << " lineto " << p2 << " lineto closepath "
<< (debug ? "fill" : "stroke") << "\n";
}
// Edges
os << "0.25 0.25 0.25 setrgbcolor\n";
CDT::Edge_iterator ei;
for (ei = dt.edges_begin(); ei != dt.edges_end(); ++ei) {
const FH fh = ei->first;
const int i = ei->second;
Point_2 p0 = fh->vertex(CDT::cw(i))->point(),
p1 = fh->vertex(CDT::ccw(i))->point();
os << p0 << " moveto " << p1 << " lineto stroke\n";
}
// Vertices
os << "0 0 0 setrgbcolor\n";
for (unsigned i = 0; i < sites.size(); ++i)
os << sites[i].vertex->point() << " p\n";
os << "grestore\n";
// Bounding Box
if (debug) {
os << "0 0 0 setrgbcolor\n";
os << "1.0 setlinewidth\n";
os << "0 0 moveto 0 " << scale << " rlineto " << scale
<< " 0 rlineto 0 " << -scale << " rlineto closepath stroke\n";
}
os.close();
}