dd-normal

function ddNormal(ps: number[][], t: number): number[][]

Defined in local-properties-at-t/normal/double-double/dd-normal.ts:15

• Returns a normal vector (not necessarily of unit length) of a bezier curve at a specific given parameter value t by simply taking the tangent at that point and rotating it by 90 degrees.

Parameters:

Name	Type	Description
ps	number[][]	a linear, quadratic or cubic bezier, e.g. [[0,0],[1,1],[2,1],[2,0]]
t	number	the t parameter