shapeBoolean

Clipper2-backed boolean operations on closed paths.

Imports

import {
  union, unionAll, intersect, subtract, subtractAll,
  symDifference, complement, occlusionSubtract, overlapRegions,
  shapeBoolean,
} from 'pattapatta'

Functions

Function	Description
`union(a, b)`	A ∪ B
`unionAll(paths)`	Folded union
`intersect(a, b)`	A ∩ B
`subtract(a, b)`	A \ B
`subtractAll(base, shapes)`	Sequential subtract
`symDifference(a, b)`	XOR
`complement(shape, w, h)`	`[0,w]×[0,h]` minus shape
`occlusionSubtract(group)`	Painter occlusion (later on top)
`overlapRegions(a, b)`	Overlap contours

All return a Group.

Examples

Union

const merged = union(createRect(10, 25, 50, 40), createRect(40, 35, 50, 40))

Union

Subtract

const cut = subtract(createRect(10, 25, 50, 40), createRect(40, 35, 50, 40))

Subtract