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Added contrast pixel filter

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This commit is contained in:
Devine Lu Linvega 2019-07-15 13:37:01 +09:00
parent beddb42000
commit 92664359c2
1 changed files with 6 additions and 1 deletions
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7
desktop/sources/scripts/library.js
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@ -209,10 +209,15 @@ function Library (ronin) {
} }
this.saturation = (pixel, q = 1) => { this.saturation = (pixel, q = 1) => {
var color = 0.2126 * pixel.r + 0.7152 * pixel.g + 0.0722 * pixel.b const color = 0.2126 * pixel.r + 0.7152 * pixel.g + 0.0722 * pixel.b
return [color, color, color, pixel.a] return [color, color, color, pixel.a]
} }
this.contrast = (pixel, q = 1) => {
const intercept = 128 * (1 - q)
return [pixel.r * q + intercept, pixel.g * q + intercept, pixel.b * q + intercept, pixel.a]
}
// Math // Math
this.add = (...args) => { this.add = (...args) => {