@loaders.gl/math/dist/geometry/colors/rgb565.js

Experimental math classes for loaders.gl

/**
 * Decode color values
 * @param rgb565
 * @param target
 * @returns target
 */
export function decodeRGB565(rgb565, target = [0, 0, 0]) {
    const r5 = (rgb565 >> 11) & 31;
    const g6 = (rgb565 >> 5) & 63;
    const b5 = rgb565 & 31;
    target[0] = r5 << 3;
    target[1] = g6 << 2;
    target[2] = b5 << 3;
    return target;
}
/**
 * Encode color values
 * @param rgb
 * @returns color
 */
export function encodeRGB565(rgb) {
    const r5 = Math.floor(rgb[0] / 8) + 4;
    const g6 = Math.floor(rgb[1] / 4) + 2;
    const b5 = Math.floor(rgb[2] / 8) + 4;
    return r5 + (g6 << 5) + (b5 << 11);
}