flatten-js is a javascript library for manipulating abstract geometrical shapes like point, vector, line, ray, segment, circle, arc and polygon. Shapes may be organized into Planar Set - searchable ...

a b = segment a b; g1 = on_tline g1 a a b; g2 = on_tline g2 b b a; m = on_circle m g1 a, on_circle m g2 b; n = on_circle n g1 a, on_circle n g2 b; c = on_pline c m a ...