gpc

polygon, err := gpc.ParseFile(filepath.Join("testdata", "test_orientation.wwl"))
if err != nil {
	panic(err)
}

goon.Dump(polygon)

Output:

(gpc.Polygon)(gpc.Polygon{
	Contours: ([]gpc.Contour)([]gpc.Contour{
		(gpc.Contour)(gpc.Contour{
			Vertices: ([]mgl64.Vec2)([]mgl64.Vec2{
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-210),
					(float64)(-210),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(210),
					(float64)(-210),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(210),
					(float64)(210),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-210),
					(float64)(210),
				}),
			}),
		}),
		(gpc.Contour)(gpc.Contour{
			Vertices: ([]mgl64.Vec2)([]mgl64.Vec2{
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(180),
					(float64)(180),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(180),
					(float64)(120),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(120),
					(float64)(180),
				}),
			}),
		}),
		(gpc.Contour)(gpc.Contour{
			Vertices: ([]mgl64.Vec2)([]mgl64.Vec2{
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(0),
					(float64)(180),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-15),
					(float64)(150),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(15),
					(float64)(150),
				}),
			}),
		}),
		(gpc.Contour)(gpc.Contour{
			Vertices: ([]mgl64.Vec2)([]mgl64.Vec2{
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-150),
					(float64)(150),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-134),
					(float64)(150),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-134),
					(float64)(166),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-150),
					(float64)(166),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-150),
					(float64)(150),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-166),
					(float64)(150),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-166),
					(float64)(134),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-150),
					(float64)(134),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-150),
					(float64)(118),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-134),
					(float64)(118),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-134),
					(float64)(134),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-150),
					(float64)(134),
				}),
				(mgl64.Vec2)(mgl64.Vec2{
					(float64)(-150),
					(float64)(150),
				}),
			}),
		}),
	}),
})