canvas-levels-filter

A module for applying a level filter effect to a canvas

Usage

`var canvasLevels = require('canvas-levels-filter'); var canvasLevelsInstance = svgLevels(); levelsInstance.setLevelValues({ inputBlack: 0, inputWhite: 127, gamma: 1, outputBlack: 127, outputWhite: 255 }) levelsInstance.canvas = canvas; var svgFilter = levelsInstance.compose();

Properties

• inputBlack
• outputBlack
• gamma
• outputBlack
• inputBlack
• color: the color channel
• values: an object with one or more of the previous properties
• filter: you can pass your own filter element

Methods

• setLevelValues: accepts an object with one or more of the level properties
• compose: applies the filter to the specified canvas
• resetCanvasData: restore the canvas image to it's original image