Geometry Helpers

Utility functions for working with geometry operations.

Functions

Function	Description
applyToPoint	Transforms a point by a matrix.
applyToRect	Transforms a rectangle by a matrix and returns its bounding box: the smallest axis-aligned rectangle that contains it.
contains	Whether a point or a rectangle is inside a rectangle.
fit	Places content in a box like CSS `object-fit` and `object-position`, e.g.
fitContain	Places content in a box, as large as possible while staying entirely inside the box (CSS `object-fit: contain`).
fitCover	Places content in a box, as small as possible while covering the whole box (CSS `object-fit: cover`).
fitFill	Places content in a box, stretched to the box on each axis, without keeping its proportions (CSS `object-fit: fill`).
fitNone	Places content in a box, at its own size, only positioned (CSS `object-fit: none`).
fitScaleDown	Places content in a box, like fitContain, but never enlarged (CSS `object-fit: scale-down`).
identity	The matrix that changes nothing.
intersection	The area two rectangles have in common.
intersects	Whether two rectangles have an area in common, exactly when intersection returns a rectangle: rectangles that only touc…
invert	The matrix that undoes `m`, e.g.
matrixToCss	Writes a matrix as a CSS `transform` or SVG `transform` value.
multiply	Multiplies matrices, in the mathematical order: the last one applies first.
rotate	A matrix that rotates points around the origin.
scale	A matrix that scales points from the origin.
simplifyPolyline	Removes the points of a polyline that change its shape by less than `tolerance`, with the Ramer–Douglas–Peucker algorit…
translate	A matrix that moves points by `(tx, ty)`.
union	The smallest rectangle that contains all the given rectangles, e.g.