在 Three.js 中，如何给我的形状自定义边缘颜色？（不仅仅是设置线框：true）

Question

我正在制作一个 3d 条形图，我希望我的条形具有自定义颜色的边缘。谁有想法？我的形状是这样创建的

var threeWidth = 400,
  threeHeight = 300;
var viewAngle = 45,
  aspect = threeWidth / threeHeight,
  near = 0.1,
  far = 10000;

var $chart = $('#chart');
var renderer = new THREE.WebGLRenderer();
var camera = new THREE.PerspectiveCamera(viewAngle, aspect, near, far);
var scene = new THREE.Scene();
scene.add(camera);

renderer.setSize(threeWidth, threeHeight);
$chart.append(renderer.domElement);

var geometry = new THREE.BoxGeometry( 10, 100, 10 );
var material = new THREE.MeshBasicMaterial( {color: 0xCC0000} );
var cube = new THREE.Mesh( geometry, material );
scene.add( cube );

Answer 1

从 r81 开始，EdgesHelper已弃用：

// edges geometry
var geometry = new THREE.EdgesGeometry( mesh.geometry ); // or WireframeGeometry
var material = new THREE.LineBasicMaterial( { color: 0xffff00, linewidth: 2 } );
var edges = new THREE.LineSegments( geometry, material );
mesh.add( edges ); // add wireframe as a child of the parent mesh

在Github上查看问题

Answer 2

这是相当古老的，但我只是偶然发现了这个......

var edges = new THREE.EdgesHelper( cube, 0x0000ff);
edges.material.linewidth = 2;
scene.add(edges);

这是一个帮助我的小提琴。
EdgesHelper 文档在这里。