export class Vector3 { x: number; y: number; z: number; constructor(x: number = 0, y: number = 0, z: number = 0) { this.x = x; this.y = y; this.z = z; } set(x: number, y: number, z: number) : Vector3 { this.x = x; this.y = y; this.z = z; return this; } }