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| import {
hslToRGB,
hsvToRGB,
labToRGB,
lchToRGB,
rgbToHSL,
rgbToHSV,
rgbToLAB,
rgbToLCH,
rgbToXYZ,
xyzToRGB,
} from "./colorConverters";
import { ColorHSL } from "./colorHSL";
import { ColorHSV } from "./colorHSV";
import { ColorLAB } from "./colorLAB";
import { ColorLCH } from "./colorLCH";
import { ColorRGBA64 } from "./colorRGBA64";
import { ColorXYZ } from "./colorXYZ";
import { lerp, lerpAnglesInDegrees } from "./mathUtils";
export function interpolateRGB(
position: number,
left: ColorRGBA64,
right: ColorRGBA64
): ColorRGBA64 {
Iif (isNaN(position) || position <= 0) {
return left;
} else Iif (position >= 1) {
return right;
}
return new ColorRGBA64(
lerp(position, left.r, right.r),
lerp(position, left.g, right.g),
lerp(position, left.b, right.b),
lerp(position, left.a, right.a)
);
}
export function interpolateHSL(
position: number,
left: ColorHSL,
right: ColorHSL
): ColorHSL {
if (isNaN(position) || position <= 0) {
return left;
} else if (position >= 1) {
return right;
}
return new ColorHSL(
lerpAnglesInDegrees(position, left.h, right.h),
lerp(position, left.s, right.s),
lerp(position, left.l, right.l)
);
}
export function interpolateHSV(
position: number,
left: ColorHSV,
right: ColorHSV
): ColorHSV {
if (isNaN(position) || position <= 0) {
return left;
} else if (position >= 1) {
return right;
}
return new ColorHSV(
lerpAnglesInDegrees(position, left.h, right.h),
lerp(position, left.s, right.s),
lerp(position, left.v, right.v)
);
}
export function interpolateXYZ(
position: number,
left: ColorXYZ,
right: ColorXYZ
): ColorXYZ {
if (isNaN(position) || position <= 0) {
return left;
} else if (position >= 1) {
return right;
}
return new ColorXYZ(
lerp(position, left.x, right.x),
lerp(position, left.y, right.y),
lerp(position, left.z, right.z)
);
}
export function interpolateLAB(
position: number,
left: ColorLAB,
right: ColorLAB
): ColorLAB {
if (isNaN(position) || position <= 0) {
return left;
} else if (position >= 1) {
return right;
}
return new ColorLAB(
lerp(position, left.l, right.l),
lerp(position, left.a, right.a),
lerp(position, left.b, right.b)
);
}
export function interpolateLCH(
position: number,
left: ColorLCH,
right: ColorLCH
): ColorLCH {
if (isNaN(position) || position <= 0) {
return left;
} else if (position >= 1) {
return right;
}
return new ColorLCH(
lerp(position, left.l, right.l),
lerp(position, left.c, right.c),
lerpAnglesInDegrees(position, left.h, right.h)
);
}
export enum ColorInterpolationSpace {
RGB,
HSL,
HSV,
XYZ,
LAB,
LCH,
}
export function interpolateByColorSpace(
position: number,
space: ColorInterpolationSpace,
left: ColorRGBA64,
right: ColorRGBA64
): ColorRGBA64 {
if (isNaN(position) || position <= 0) {
return left;
} else Iif (position >= 1) {
return right;
}
switch (space) {
case ColorInterpolationSpace.HSL:
return hslToRGB(interpolateHSL(position, rgbToHSL(left), rgbToHSL(right)));
case ColorInterpolationSpace.HSV:
return hsvToRGB(interpolateHSV(position, rgbToHSV(left), rgbToHSV(right)));
case ColorInterpolationSpace.XYZ:
return xyzToRGB(interpolateXYZ(position, rgbToXYZ(left), rgbToXYZ(right)));
case ColorInterpolationSpace.LAB:
return labToRGB(interpolateLAB(position, rgbToLAB(left), rgbToLAB(right)));
case ColorInterpolationSpace.LCH:
return lchToRGB(interpolateLCH(position, rgbToLCH(left), rgbToLCH(right)));
default:
return interpolateRGB(position, left, right);
}
}
|