threejs-显示帮助

照相机：

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1 2	shadowCameraHelper = new THREE.CameraHelper(camera); scene.add(shadowCameraHelper)

 

灯光：

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1 2	lightHelper = new THREE.SpotLightHelper( spotLight,0x000000 ); scene.add(lightHelper)

　　

坐标轴：

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1	cene.add(new THREE.AxesHelper(300,300));