Function stroke

pattern/canvas.js:677–684

(r, g, b, a)

    return _ctx.state.fill;
}
function stroke(r, g, b, a) {
    /* Sets the current stroke color.
     */
    if (r !== undefined) {
        _ctx.state.stroke = (r instanceof Color)? r.copy() : new Color(r, g, b, a);
    }
    return _ctx.state.stroke;
}

function nofill() {
    /* No current fill color.