Function createFilterMatrix

src/generators/utils/matrix.ts:6–24

(config: Theme)

export function createFilterMatrix(config: Theme): Matrix5x5 {
    let m: Matrix5x5 = Matrix.identity();
    if (config.sepia !== 0) {
        m = multiplyMatrices(m, Matrix.sepia(config.sepia / 100));
    }
    if (config.grayscale !== 0) {
        m = multiplyMatrices(m, Matrix.grayscale(config.grayscale / 100));
    }
    if (config.contrast !== 100) {
        m = multiplyMatrices(m, Matrix.contrast(config.contrast / 100));
    }
    if (config.brightness !== 100) {
        m = multiplyMatrices(m, Matrix.brightness(config.brightness / 100));
    }
    if (config.mode === 1) {
        m = multiplyMatrices(m, Matrix.invertNHue());
    }
    return m;
}

export function applyColorMatrix([r, g, b]: [number, number, number], matrix: Matrix5x5): [number, number, number] {
    const rgb: Matrix5x1 = [[r / 255], [g / 255], [b / 255], [1], [1]];