invert()

The invert function allows you to get a negative color. This function returns a new Spectrum instance representing the inverted color.

Usage

import Spectrum, { invert } from '@snipshot/spectrum';

const yellow = new Spectrum('rgb', [255, 255, 0]);
const negativeColor = invert(yellow, 1); // 1 is a weight of the inverted color

console.log(negativeColor.rgb); // { r: 0, g: 0, b: 255, a: 1 } - blue

Parameters

invert(color1Obj, weight)

Parameter	Type	Required	Valid range	Description
colorObj	Spectrum instance	true	-	The initial color
weight	number	true	[0; 1]	The weight of the inverted color in the result

Return Value

The invert function returns a new Spectrum instance representing the negative color.

Examples

Weight is 0.5

When the weight value is equal to 0.5 (50% of initial color and 50% of inverted color), it will always produce grey color (#808080).

import Spectrum, { invert } from '@snipshot/spectrum';

const yellow = new Spectrum('rgb', [255, 255, 0]);
const negativeYellow = invert(yellow, 0.5);

console.log(negativeYellow.hex); // #808080

const crimson = new Spectrum('hex', '#DC143C');
const negativeCrimson = invert(crimson, 0.5);

console.log(negativeCrimson.hex); // #808080

Weight is 0

import Spectrum, { invert } from '@snipshot/spectrum';

const yellow = new Spectrum('rgb', [255, 255, 0]);
const negativeColor = invert(yellow, 0);

console.log(negativeColor.rgb); // { r: 255, g: 255, b: 0, a: 1 } - initial color