Slic3r::AreaMoments Struct Reference

Public Member Functions
void	add (const Polygon &polygon)

Public Attributes
double	area { 0. }
Vec2d	first { Vec2d::Zero() }
Vec3d	second { Vec3d::Zero() }

Detailed Description

Member Function Documentation

add()

void Slic3r::AreaMoments::add ( const Polygon & polygon )

inline

    {
        if (polygon.points.size() < 3)
            return;
        Vec2d p1 = unscaled(polygon.points.back());
        for (const Point &point : polygon.points) {
            const Vec2d  p2 = unscaled(point);
            const double a  = cross2(p1, p2);
            area += a / 2.;
            first += a / 6. * (p1 + p2);
            second += a / 12. *
                      Vec3d(p1.x() * p1.x() + p1.x() * p2.x() + p2.x() * p2.x(), p1.y() * p1.y() + p1.y() * p2.y() + p2.y() * p2.y(),
                            p1.x() * p1.y() + p2.x() * p2.y() + 0.5 * (p1.x() * p2.y() + p2.x() * p1.y()));
            p1 = p2;
        }
    }

References area, Slic3r::cross2(), first, Slic3r::MultiPoint::points, second, and Slic3r::unscaled().

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Member Data Documentation

area

double Slic3r::AreaMoments::area { 0. }

{ 0. };

Referenced by add().

first

Vec2d Slic3r::AreaMoments::first { Vec2d::Zero() }

{ Vec2d::Zero() };

Referenced by add().

second

Vec3d Slic3r::AreaMoments::second { Vec3d::Zero() }

{ Vec3d::Zero() };

Referenced by add().

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The documentation for this struct was generated from the following file:

• /home/runner/work/OrcaSlicer/OrcaSlicer/src/libslic3r/ConnectedBodies.cpp