Method constructor

examples/extern/gmath.bundle.js:509–516

(x, y, z, w2)

        return new Vector4(1);
    }
    constructor(x, y, z, w2){
        if (x !== undefined) {
            this.x = x;
            this.y = y ?? x;
            this.z = z ?? x;
            this.w = w2 ?? x;
        }
    }
    clone() {
        return new Vector4(this.x, this.y, this.z, this.w);
    }