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New ExPolygon::triangulate() method

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This commit is contained in:
Alessandro Ranellucci
2014-04-24 17:06:16 +02:00
parent bb0ce3cccd
commit 37c7b958d4
5 changed files with 26 additions and 3 deletions
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12
xs/src/ExPolygon.cpp
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@@ -176,6 +176,18 @@ ExPolygon::get_trapezoids(Polygons* polygons, double angle) const
polygon->rotate(-(PI/2 - angle), Point(0,0));
}
void
ExPolygon::triangulate(Polygons* polygons) const
{
// first make trapezoids
Polygons trapezoids;
this->get_trapezoids(&trapezoids);
// then triangulate each trapezoid
for (Polygons::iterator polygon = trapezoids.begin(); polygon != trapezoids.end(); ++polygon)
polygon->triangulate_convex(polygons);
}
#ifdef SLIC3RXS
SV*
ExPolygon::to_AV() {

1
xs/src/ExPolygon.hpp
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@@ -29,6 +29,7 @@ class ExPolygon
void medial_axis(double max_width, double min_width, Polylines* polylines) const;
void get_trapezoids(Polygons* polygons) const;
void get_trapezoids(Polygons* polygons, double angle) const;
void triangulate(Polygons* polygons) const;
#ifdef SLIC3RXS
void from_SV(SV* poly_sv);

4
xs/src/Polygon.cpp
View File

@@ -168,7 +168,9 @@ Polygon::triangulate_convex(Polygons* polygons) const
p.points.push_back(this->points.front());
p.points.push_back(*(it-1));
p.points.push_back(*it);
polygons->push_back(p);
// this should be replaced with a more efficient call to a merge_collinear_segments() method
if (p.area() > 0) polygons->push_back(p);
}
}