export function grayShadeFromString()

in lib/@uncharted/cards/src/util/images.js [13:38]

• 21 lines of code
• 4 McCabe index (conditional complexity)

export function grayShadeFromString(str, min, max) {
    let hash = 0;
    for (let i = 0; i < str.length; i++) {
        hash = str.charCodeAt(i) + ((hash << 5) - hash);
    }

    const color32bit = (hash & 0xFFFFFF);
    let r = (color32bit >> 16) & 255;
    let g = (color32bit >> 8) & 255;
    let b = color32bit & 255;

    /* clamp the colors */
    if (min !== undefined) {
        r = Math.max(r, min);
        g = Math.max(g, min);
        b = Math.max(b, min);
    }

    if (max !== undefined) {
        r = Math.min(r, max);
        g = Math.min(g, max);
        b = Math.min(b, max);
    }

    return Math.floor((r + g + b) / 3);
}