@cornerstonejs/dicom-image-loader/dist/esm/shared/scaling/replicate.js

Cornerstone Image Loader for DICOM WADO-URI and WADO-RS and Local file

export default function replicate(src, dest) {
    const { rows: srcRows, columns: srcColumns, pixelData: srcData, samplesPerPixel = 1, } = src;
    const { rows, columns, pixelData } = dest;
    const xSrc1Off = [];
    for (let x = 0; x < columns; x++) {
        const xSrc = (x * (srcColumns - 1)) / (columns - 1);
        xSrc1Off[x] = Math.floor(xSrc) * samplesPerPixel;
    }
    for (let y = 0; y < rows; y++) {
        const ySrc = (y * (srcRows - 1)) / (rows - 1);
        const ySrc1Off = Math.floor(ySrc) * srcColumns * samplesPerPixel;
        const yOff = y * columns;
        for (let x = 0; x < columns; x++) {
            for (let sample = 0; sample < samplesPerPixel; sample++) {
                pixelData[yOff + x + sample] = srcData[ySrc1Off + xSrc1Off[x] + sample];
            }
        }
    }
    return pixelData;
}