Method extend3

examples/extern/gmath.bundle.js:754–756

(z)

        return isFinite(this.x) && isFinite(this.y);
    }
    extend3(z) {
        return new Vector3(this.x, this.y, z);
    }
    extend4(z, w8) {
        return new Vector4(this.x, this.y, z, w8);
    }