46 lines
1.5 KiB
TypeScript
46 lines
1.5 KiB
TypeScript
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export class Color4
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{
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static black: Color4 = new Color4(0.0, 0.0, 0.0, 1.0);
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static white: Color4 = new Color4(1.0, 1.0, 1.0, 1.0);
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constructor(public red: number | Buffer, public green: number, public blue: number | boolean, public alpha: number | boolean = 0)
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{
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if (red instanceof Buffer && typeof blue === 'boolean')
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{
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const buf = red;
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const pos = green;
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const inverted = blue;
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let alphaInverted = false;
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if (typeof alpha === 'boolean' && alpha === true)
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{
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alphaInverted = true;
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}
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this.red = 0.0;
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this.green = 0.0;
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this.blue = 0.0;
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this.alpha = 0.0;
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const quanta: number = 1.0 / 255.0;
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if (inverted)
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{
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this.red = (255 - buf[pos]) * quanta;
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this.green = (255 - buf[pos + 1]) * quanta;
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this.blue = (255 - buf[pos + 2]) * quanta;
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this.alpha = (255 - buf[pos + 3]) * quanta;
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}
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else
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{
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this.red = buf[pos] * quanta;
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this.green = buf[pos + 1] * quanta;
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this.blue = buf[pos + 2] * quanta;
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this.alpha = buf[pos + 3] * quanta;
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}
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if (alphaInverted)
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{
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this.alpha = 1.0 - this.alpha;
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}
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}
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}
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}
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