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canvas-levels-filter

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    canvas-levels-filter

Module ffor applying a level filter effect to a canvas


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2
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14.1 kB
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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

FAQs

Last updated on 22 Jan 2017

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