Implemented utility functions to operate over lines, polylines, polygons,

surfaces.
This commit is contained in:
bubnikv 2016-11-07 22:49:11 +01:00
parent aac968162b
commit 5a81731577
13 changed files with 495 additions and 66 deletions

View file

@ -50,6 +50,8 @@ class Polygon : public MultiPoint {
extern BoundingBox get_extents(const Polygon &poly);
extern BoundingBox get_extents(const Polygons &polygons);
extern BoundingBox get_extents_rotated(const Polygon &poly, double angle);
extern BoundingBox get_extents_rotated(const Polygons &polygons, double angle);
// Remove sticks (tentacles with zero area) from the polygon.
extern bool remove_sticks(Polygon &poly);
@ -70,8 +72,71 @@ inline void polygons_append(Polygons &dst, Polygons &&src)
std::move(std::begin(src), std::end(src), std::back_inserter(dst));
}
#endif
inline void polygons_rotate(Polygons &polys, double angle)
{
for (Polygons::iterator p = polys.begin(); p != polys.end(); ++p)
p->rotate(angle);
}
inline Lines to_lines(const Polygon &poly)
{
Lines lines;
lines.reserve(poly.points.size());
for (Points::const_iterator it = poly.points.begin(); it != poly.points.end()-1; ++it)
lines.push_back(Line(*it, *(it + 1)));
lines.push_back(Line(poly.points.back(), poly.points.front()));
return lines;
}
inline Lines to_lines(const Polygons &polys)
{
size_t n_lines = 0;
for (size_t i = 0; i < polys.size(); ++ i)
n_lines += polys[i].points.size();
Lines lines;
lines.reserve(n_lines);
for (size_t i = 0; i < polys.size(); ++ i) {
const Polygon &poly = polys[i];
for (Points::const_iterator it = poly.points.begin(); it != poly.points.end()-1; ++it)
lines.push_back(Line(*it, *(it + 1)));
lines.push_back(Line(poly.points.back(), poly.points.front()));
}
return lines;
}
inline Polylines to_polylines(const Polygons &polys)
{
Polylines polylines;
polylines.assign(polys.size(), Polyline());
size_t idx = 0;
for (Polygons::const_iterator it = polys.begin(); it != polys.end(); ++ it) {
Polyline &pl = polylines[idx ++];
pl.points = it->points;
pl.points.push_back(it->points.front());
}
assert(idx == polylines.size());
return polylines;
}
#if SLIC3R_CPPVER >= 11
inline Polylines to_polylines(Polygons &&polys)
{
Polylines polylines;
polylines.assign(polys.size(), Polyline());
size_t idx = 0;
for (Polygons::const_iterator it = polys.begin(); it != polys.end(); ++ it) {
Polyline &pl = polylines[idx ++];
pl.points = std::move(it->points);
pl.points.push_back(it->points.front());
}
assert(idx == polylines.size());
return polylines;
}
#endif
} // Slic3r
// start Boost
#include <boost/polygon/polygon.hpp>
namespace boost { namespace polygon {