#include "region.h" #include "utils.h" #include "shape.h" namespace Geom { Region Region::operator*(Matrix const &m) const { Region r((m.flips() ? boundary.reverse() : boundary) * m, fill); if(box && m.onlyScaleAndTranslation()) r.box = (*box) * m; return r; } bool Region::invariants() const { return self_crossings(boundary).empty(); } unsigned outer_index(Regions const &ps) { if(ps.size() <= 1 || ps[0].contains(ps[1])) { return 0; } else { /* Since we've already shown that chunks[0] is not outside it can be used as an exemplar inner. */ Point exemplar = Path(ps[0]).initialPoint(); for(unsigned i = 1; i < ps.size(); i++) { if(ps[i].contains(exemplar)) { return i; } } } return ps.size(); } }