提交貢獻給 Three.js 的文件在 這裡

解答: 取代 fillScene()DirectionalLight 程式:

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var light = new THREE.SpotLight( 0xFFFFFF, 1.5 );
light.position.set( -400, 1200, 300 );
light.angle = 20 * Math.PI / 180;
light.exponent = 1;
light.target.position.set( 0, 200, 0 );
scene.add( light );