react-native-reanimated
Version:
More powerful alternative to Animated library for React Native.
158 lines (157 loc) • 6.48 kB
JavaScript
import { hsvToColor, RGBtoHSV, rgbaColor, processColor, red, green, blue, opacity, } from './Colors';
import { makeMutable } from './core';
import { interpolate } from './interpolation';
// @ts-ignore JS file
import { Extrapolate } from '../reanimated1/derived';
import { useSharedValue } from './hook/useSharedValue';
const interpolateColorsHSV = (value, inputRange, colors, options) => {
'worklet';
let h = 0;
const { useCorrectedHSVInterpolation = true } = options;
if (useCorrectedHSVInterpolation) {
// if the difference between hues in a range is > 180 deg
// then move the hue at the right end of the range +/- 360 deg
// and add the next point in the original place + 0.00001 with original hue
// to not break the next range
const correctedInputRange = [inputRange[0]];
const originalH = colors.h;
const correctedH = [originalH[0]];
for (let i = 1; i < originalH.length; ++i) {
const d = originalH[i] - originalH[i - 1];
if (originalH[i] > originalH[i - 1] && d > 0.5) {
correctedInputRange.push(inputRange[i]);
correctedInputRange.push(inputRange[i] + 0.00001);
correctedH.push(originalH[i] - 1);
correctedH.push(originalH[i]);
}
else if (originalH[i] < originalH[i - 1] && d < -0.5) {
correctedInputRange.push(inputRange[i]);
correctedInputRange.push(inputRange[i] + 0.00001);
correctedH.push(originalH[i] + 1);
correctedH.push(originalH[i]);
}
else {
correctedInputRange.push(inputRange[i]);
correctedH.push(originalH[i]);
}
}
h =
(interpolate(value, correctedInputRange, correctedH, Extrapolate.CLAMP) +
1) %
1;
}
else {
h = interpolate(value, inputRange, colors.h, Extrapolate.CLAMP);
}
const s = interpolate(value, inputRange, colors.s, Extrapolate.CLAMP);
const v = interpolate(value, inputRange, colors.v, Extrapolate.CLAMP);
const a = interpolate(value, inputRange, colors.a, Extrapolate.CLAMP);
return hsvToColor(h, s, v, a);
};
const toLinearSpace = (x, gamma) => {
'worklet';
return x.map((v) => Math.pow(v / 255, gamma));
};
const toGammaSpace = (x, gamma) => {
'worklet';
return Math.round(Math.pow(x, 1 / gamma) * 255);
};
const interpolateColorsRGB = (value, inputRange, colors, options) => {
'worklet';
const { gamma = 2.2 } = options;
let { r: outputR, g: outputG, b: outputB } = colors;
if (gamma !== 1) {
outputR = toLinearSpace(outputR, gamma);
outputG = toLinearSpace(outputG, gamma);
outputB = toLinearSpace(outputB, gamma);
}
const r = interpolate(value, inputRange, outputR, Extrapolate.CLAMP);
const g = interpolate(value, inputRange, outputG, Extrapolate.CLAMP);
const b = interpolate(value, inputRange, outputB, Extrapolate.CLAMP);
const a = interpolate(value, inputRange, colors.a, Extrapolate.CLAMP);
if (gamma === 1) {
return rgbaColor(r, g, b, a);
}
return rgbaColor(toGammaSpace(r, gamma), toGammaSpace(g, gamma), toGammaSpace(b, gamma), a);
};
const getInterpolateRGB = (colors) => {
'worklet';
const r = [];
const g = [];
const b = [];
const a = [];
for (let i = 0; i < colors.length; ++i) {
const color = colors[i];
const processedColor = processColor(color);
// explicit check in case if processedColor is 0
if (processedColor !== null && processedColor !== undefined) {
r.push(red(processedColor));
g.push(green(processedColor));
b.push(blue(processedColor));
a.push(opacity(processedColor));
}
}
return { r, g, b, a };
};
const getInterpolateHSV = (colors) => {
'worklet';
const h = [];
const s = [];
const v = [];
const a = [];
for (let i = 0; i < colors.length; ++i) {
const color = colors[i];
const processedColor = processColor(color);
if (typeof processedColor === 'number') {
const processedHSVColor = RGBtoHSV(red(processedColor), green(processedColor), blue(processedColor));
h.push(processedHSVColor.h);
s.push(processedHSVColor.s);
v.push(processedHSVColor.v);
a.push(opacity(processedColor));
}
}
return { h, s, v, a };
};
export const interpolateColor = (value, inputRange, outputRange, colorSpace = 'RGB', options = {}) => {
'worklet';
if (colorSpace === 'HSV') {
return interpolateColorsHSV(value, inputRange, getInterpolateHSV(outputRange), options);
}
else if (colorSpace === 'RGB') {
return interpolateColorsRGB(value, inputRange, getInterpolateRGB(outputRange), options);
}
throw new Error(`Invalid color space provided: ${colorSpace}. Supported values are: ['RGB', 'HSV']`);
};
export var ColorSpace;
(function (ColorSpace) {
ColorSpace[ColorSpace["RGB"] = 0] = "RGB";
ColorSpace[ColorSpace["HSV"] = 1] = "HSV";
})(ColorSpace || (ColorSpace = {}));
export function useInterpolateConfig(inputRange, outputRange, colorSpace = ColorSpace.RGB, options = {}) {
return useSharedValue({
inputRange,
outputRange,
colorSpace,
cache: makeMutable(null),
options,
});
}
export const interpolateSharableColor = (value, interpolateConfig) => {
'worklet';
let colors = interpolateConfig.value.cache.value;
if (interpolateConfig.value.colorSpace === ColorSpace.RGB) {
if (!colors) {
colors = getInterpolateRGB(interpolateConfig.value.outputRange);
interpolateConfig.value.cache.value = colors;
}
return interpolateColorsRGB(value, interpolateConfig.value.inputRange, colors, interpolateConfig.value.options);
}
else if (interpolateConfig.value.colorSpace === ColorSpace.HSV) {
if (!colors) {
colors = getInterpolateHSV(interpolateConfig.value.outputRange);
interpolateConfig.value.cache.value = colors;
}
return interpolateColorsHSV(value, interpolateConfig.value.inputRange, colors, interpolateConfig.value.options);
}
throw new Error(`Invalid color space provided: ${interpolateConfig.value.colorSpace}. Supported values are: ['RGB', 'HSV']`);
};