Data and Math
vgeometry
Flat 2D geometry: distances, polygon areas, convex hulls and segment crossings.
Released v1.0.0 · 2026-09-28use "stdlib/geometry.ven"print distance((0.0, 0.0), (3.0, 4.0))
:: 5.0Reference (11 functions)
API reference
distance(a, b)
Gives back the straight line distance between two points.
distance((0.0, 0.0), (3.0, 4.0))
:: 5.0polygon_signed_area_x2(points)
Gives back twice the signed area of a polygon.
polygon_signed_area_x2([(0.0, 0.0), (4.0, 0.0), (4.0, 3.0), (0.0, 3.0)])
:: 24.0polygon_area(points)
Gives back the area enclosed by a polygon.
polygon_area([(0.0, 0.0), (4.0, 0.0), (4.0, 3.0), (0.0, 3.0)])
:: 12.0polygon_perimeter(points)
Gives back the total length of a polygon's boundary.
polygon_perimeter([(0.0, 0.0), (4.0, 0.0), (4.0, 3.0), (0.0, 3.0)])
:: 14.0centroid(points)
Gives back a polygon's area-weighted centroid.
centroid([(0.0, 0.0), (1.0, 0.0), (1.0, 1.0), (0.0, 1.0)])
:: (0.5, 0.5)bounding_box(points)
Gives back the axis-aligned bounding box of a set of points.
bounding_box([(1.0, 5.0), (3.0, 1.0), (0.0, 2.0)])
:: ((0.0, 1.0), (3.0, 5.0))turn(o, a, b)
Gives back twice the signed area of triangle (o, a, b).
turn((0.0, 0.0), (1.0, 0.0), (1.0, 1.0))
:: 1.0convex_hull(points)
Gives back the convex hull of a set of points.
convex_hull([(0.0, 0.0), (4.0, 0.0), (4.0, 4.0), (0.0, 4.0), (2.0, 2.0)])
:: [(0.0, 0.0), (4.0, 0.0), (4.0, 4.0), (0.0, 4.0)]point_in_polygon(p, polygon)
Tests whether a point lies inside a polygon.
point_in_polygon((2.0, 2.0), [(0.0, 0.0), (4.0, 0.0), (4.0, 4.0), (0.0, 4.0)])
:: yesline_segments_intersect(a1, a2, b1, b2)
line_segments_intersect((0.0, 0.0), (4.0, 4.0), (0.0, 4.0), (4.0, 0.0))
:: yesrotate_point(p, around, radians)
Rotates a point around another point by an angle in radians.
rotate_point((1.0, 0.0), (0.0, 0.0), 1.5707963267948966)
:: (6.123233995736766e-17, 1.0)