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EditColor.ts
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EditColor.ts
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import {
AnimConstants,
Color,
GammaUtils,
} from "@systemic-games/pixels-core-animation";
import { assertNever } from "@systemic-games/pixels-core-utils";
import { ColorMode } from "./ColorMode";
import { observable } from "./decorators";
export default class EditColor {
@observable
mode: ColorMode;
@observable
color?: Color; // Used when type is "rgb"
constructor(colorOrMode?: Color | Exclude<ColorMode, "rgb">) {
if (typeof colorOrMode === "string") {
this.mode = colorOrMode;
} else {
this.mode = "rgb";
this.color = colorOrMode ?? Color.black.duplicate();
}
}
toColorIndex(refPalette: Readonly<Color>[]): number {
switch (this.mode) {
case "rgb":
return EditColor.toColorIndex(refPalette, this.color ?? Color.black);
case "face":
return AnimConstants.paletteColorFromFace;
case "random":
return AnimConstants.paletteColorFromRandom;
default:
assertNever(this.mode, `Unsupported EditColor type: ${this.mode}`);
}
}
static toColorIndex(
refPalette: Readonly<Color>[],
color: Readonly<Color>
): number {
const colorGamma = GammaUtils.gamma(color);
let colorIndex = refPalette.findIndex((c) => colorGamma.equals(c));
if (colorIndex < 0) {
colorIndex = refPalette.length;
refPalette.push(colorGamma);
}
return colorIndex;
}
duplicate(): EditColor {
return this.mode === "rgb"
? new EditColor(this.color)
: new EditColor(this.mode);
}
}