Three.js中的當前頂點位置

Question

我正在創建一個標準爲new THREE.CubeGeometry的多維數據集。我也在改變網格的位置（x，y，z），並將它添加到場景中。稍後當用戶點擊該選項時，我想在立方體的所有六個角上畫一個立方體。我怎樣才能得到座標系中每個頂點的位置？

Answer 1

你可以簡單地做：

var geometry = new THREE.CubeGeometry(...); 
var verices = geometry.vertices; 

Answer 2

如果u尋找8個頂點/角落 ... http://jsfiddle.net/ebeit303/54uQ9/

function addShapes() { 
width = 100; 
height = 100 
depth = 100; 
var geometry = new THREE.CubeGeometry(width, height, depth); 
var material = new THREE.MeshBasicMaterial({color:0xffccff, side:2, overdraw:true}); 

mesh = new THREE.Mesh(geometry, material); 
group.add(mesh); 
mesh.position.set(10,20,20); 
var x = mesh.position.x; 
var y = mesh.position.y; 
var z = mesh.position.z; 
console.log(geometry.vertices); 
var len = geometry.vertices.length; 
for(var i = 0; i < len; i++){ 
    var vx = geometry.vertices[i].x; 
    var vy = geometry.vertices[i].y; 
    var vz = geometry.vertices[i].z; 
     var material1 = new THREE.MeshBasicMaterial({color:Math.random()*0xffffff, side:2, overdraw:true, opacity:0.6, transparent:true}); 
    var mesh1 = new THREE.Mesh(geometry, material1); 
    group.add(mesh1); 
    mesh1.position.set((vx*2)+x,(vy*2)+y,(vz*2)+z); 
} 
} 

這裏的立方體現在包括8個頂點/角落，新的立方體被繪製，並在中間立方體的每個頂點上的位置，其簡單的邏輯... cubegeometry - geo metry.vertices和網位置用於簡單的計算....只是經過的jsfiddle鏈接...它可能給你一些公平的想法...