react-native-image-filter-kit/dist/convolve-matrix-filters/shape-transforms.js

Various image filters for iOS & Android

var __rest = (this && this.__rest) || function (s, e) {
    var t = {};
    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
        t[p] = s[p];
    if (s != null && typeof Object.getOwnPropertySymbols === "function")
        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
            t[p[i]] = s[p[i]];
    return t;
};
import { Platform } from 'react-native';
const edgeDetectionMatrix = [
    -1, -1, -1,
    -1, 8, -1,
    -1, -1, -1
];
const embossMatrix = [
    -2, -1, 0,
    -1, 1, 1,
    0, 1, 2
];
const fuzzyGlassMatrix = [
    0, 20, 0,
    20, -59, 20,
    1, 13, 0
].map(w => w / 7);
const asNative3x3FilterConfig = Platform.select({
    ios: ({ matrix, image, disableCache }) => ({
        name: 'CIConvolution3X3',
        inputWeights: matrix,
        inputImage: image,
        disableCache
    }),
    android: ({ matrix, image, disableCache }) => ({
        name: 'ScriptIntrinsicConvolve3x3',
        coefficients: matrix,
        image,
        disableCache
    })
});
const asNative5x5FilterConfig = Platform.select({
    ios: ({ matrix, image, disableCache }) => ({
        name: 'CIConvolution5X5',
        inputWeights: matrix,
        inputImage: image,
        disableCache
    }),
    android: ({ matrix, image, disableCache }) => ({
        name: 'ScriptIntrinsicConvolve5x5',
        coefficients: matrix,
        image,
        disableCache
    })
});
export const shapeTransforms = {
    ConvolveMatrix3x3: asNative3x3FilterConfig,
    ConvolveMatrix5x5: asNative5x5FilterConfig,
    Sharpen: (_a) => {
        var { amount = 1 } = _a, config = __rest(_a, ["amount"]);
        return (asNative3x3FilterConfig(Object.assign({}, config, { matrix: [
                0, -amount, 0,
                -amount, amount * 4 + 1, -amount,
                0, -amount, 0
            ] })));
    },
    EdgeDetection: Platform.select({
        ios: ({ image, disableCache }) => ({
            name: 'CIColorInvert',
            inputImage: Object.assign({}, asNative3x3FilterConfig({
                image,
                disableCache,
                matrix: edgeDetectionMatrix
            }), { inputBias: 1 }),
            disableCache
        }),
        android: ({ image, disableCache, disableIntermediateCaches = true }) => ({
            name: 'PlusBlendColor',
            dstImage: asNative3x3FilterConfig({
                image,
                disableCache,
                matrix: edgeDetectionMatrix
            }),
            disableCache,
            disableIntermediateCaches,
            srcColor: 'black'
        })
    }),
    Emboss: (config) => (asNative3x3FilterConfig(Object.assign({}, config, { matrix: embossMatrix }))),
    FuzzyGlass: (config) => (asNative3x3FilterConfig(Object.assign({}, config, { matrix: fuzzyGlassMatrix })))
};
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