Method toVec4

src/main/java/field/linalg/Vec2.java:1315–1317

Converts this Vec2 to a Vec4 (with z=0, w=0) @return Vec4(this.x, this.y, 0, 0)

()

     * @return Vec4(this.x, this.y, 0, 0)
     */
    public Vec4 toVec4() {
        return new Vec4(this, 0, 0);
    }

    /**
     * returns true if any component of this Double.isNaN