Method lineTo

docs/app/js/sanddance-app.js:140272–140274

(x, y)

        }
    }
    lineTo(x, y) {
        this._ += `L${this._x1 = +x},${this._y1 = +y}`;
    }
    arc(x, y, r) {
        x = +x, y = +y, r = +r;
        const x0 = x + r;