               // 3D scene
                this.scene = new Scene();
                this.scene.background = new Color(colors.backgroundColor);
                this.camera = new PerspectiveCamera(30);
                this.camera.near = 1;
                this.camera.far = 40;
                this.camera.position.set(0, 6, 8);
                this.camera.lookAt(this.scene.position);

                // Global geometries
                this.screenTriangle = getFullscreenTriangle();

                // Global