代码
球体形状里面的纬度参数会影响他的最终效果呈现，详见下：
1
new THREE.SphereGeometry(1/2, 18, 12, Math.PI / 2, Math.PI, 0, 1 * Math.PI / 2),
2
new THREE.SphereGeometry(1/2, 18, 12, Math.PI / 2, Math.PI, 0, 2 * Math.PI / 2),
3
new THREE.SphereGeometry(1/2, 18, 12, Math.PI / 2, Math.PI, 0, 3 * Math.PI / 2),
4
new THREE.SphereGeometry(1/2, 18, 12, Math.PI / 2, Math.PI, 0, 4 * Math.PI / 2)
12
new THREE.SphereGeometry(1/2, 18, 12, Math.PI / 2, Math.PI, 0, 12 * Math.PI / 2)
23
new THREE.SphereGeometry(1/2, 18, 12, Math.PI / 2, Math.PI, 0, 23 * Math.PI / 2)
23是最大了，24点时候就消失了。
