css-gradient-angle-to-svg-gradient-coordinates

css-gradient-angle-to-svg-gradient-coordinates

Converts a CSS gradient's angle in degrees to an SVG gradient's coordinates (x1/y1/x2/y2) to produce a linear gradient of the same angle.

install

yarn add css-gradient-angle-to-svg-gradient-coordinates

usage

import angleToCoordinates from 'css-gradient-angle-to-svg-gradient-coordinates'

const coordinates = angleToCoordinates(90)

const linearGradient = `
  <linearGradient x1="${coordinates.x1}" y1="${coordinates.y1}" x2="${coordinates.x2}" y2="${coordinates.y2}">
    <stop offset="0%" stop-color="#000000" />
    <stop offset="75%" stop-color="#FFFFFF" />
  </linearGradient
`

API

angleToCoordinates(angleInDegrees, [sizeOfSquare])

Takes an angle in degrees and finds a set of coordinates around the edge of a square which will draw a line dissecting the center of that square. For the purposes of using this to create SVG gradients, the square is 1 long and 1 high, such that the output coordinates are percentages that will understand — but this is also customizable.

• angleInDegrees - an angle in degrees between -Infinity to Infinity.
• sizeOfSquare (optional, default = 1) - the size of the square to calculate coordinates on. Usually not necessary to specify unless you've changed gradientUnits or you're trying to do something else with this module.

Returns an object that looks like this: { x1: 0.5, y1: 1, x2: 0.5, y2: 0 }

testing

yarn run test

license

MIT