小编ale*_*nha的帖子

我正在尝试在Three.js中创建一个鸡蛋网格.我使用LatheGeometry编写了下面的代码,但我错过了正确的等式.有人可以帮忙吗？

var r0 = 40
var r1 = r0/4;
var inc = Math.PI/r0;
points = [];
points.push( new THREE.Vector2( 0.0001, -r0/2 ) );
for ( var i = 0; i <= r0; i ++ ) {
    var def = i<r0/2 ? 0 : r1*Math.sin((i-r0/2)*inc);
    points.push( new THREE.Vector2( Math.sqrt(r0*i-i*i), i+def-r0/2 ) );
}
points.push( new THREE.Vector2( 0.0001, -r0/2 ) );
var geometry = new THREE.LatheGeometry( points, 30 );
var material = new THREE.MeshPhongMaterial( { color: 0xFFFF20 } );
Ovo = new …