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WIP TreeSupports: Extracting make_circle() into Polygon.cpp,hpp

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Vojtech Bubnik 2022-09-01 15:47:13 +02:00
parent 19f0d94be3
commit f790468cca
3 changed files with 27 additions and 13 deletions
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19
src/libslic3r/Polygon.cpp
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@ -528,4 +528,23 @@ bool contains(const Polygons &polygons, const Point &p, bool border_result)
return (poly_count_inside % 2) == 1;
}
Polygon make_circle(double radius, double error)
{
double angle = 2. * acos(1. - error / radius);
size_t num_segments = size_t(ceil(2. * M_PI / angle));
return make_circle_num_segments(radius, num_segments);
}
Polygon make_circle_num_segments(double radius, size_t num_segments)
{
Polygon out;
out.points.reserve(num_segments);
double angle_inc = 2.0 * M_PI / num_segments;
for (size_t i = 0; i < num_segments; ++ i) {
const double angle = angle_inc * i;
out.points.emplace_back(coord_t(cos(angle) * radius), coord_t(sin(angle) * radius));
}
return out;
}
}