显示线框和纯色 [英] Display wireframe and solid color

问题描述

是否可以在同一对象上显示对象的线框及其表面的纯色?我找到了一种使用对象克隆并分配不同材质的方法，例如

Is it possible to display the wireframe of the object and also the solid color of its faces on the same object? I found a way using a clone of the object and assign different materials e.g

var geometry = new THREE.PlaneGeometry(plane.width, plane.height,width - 1, height - 1);
var materialWireframe = new THREE.MeshPhongMaterial({color:"red",wireframe:true});
var materialSolid = new THREE.MeshPhongMaterial({color:"green",wireframe:false});
var plane = new THREE.Mesh(geometry, materialWireframe );
var plane1 = plane.clone();
plane1.material = materialSolid ;
plane1.material.needsUpdate = true;

有什么想法吗?

推荐答案

要同时渲染模型及其线框，可以使用如下所示的模式:

To render both a model and its wireframe, you can use a pattern like this one:

// mesh
var material = new THREE.MeshPhongMaterial( {
    color: 0xff0000,
    polygonOffset: true,
    polygonOffsetFactor: 1, // positive value pushes polygon further away
    polygonOffsetUnits: 1
} );
var mesh = new THREE.Mesh( geometry, material );
scene.add( mesh )

// wireframe
var geo = new THREE.EdgesGeometry( mesh.geometry ); // or WireframeGeometry
var mat = new THREE.LineBasicMaterial( { color: 0xffffff, linewidth: 2 } );
var wireframe = new THREE.LineSegments( geo, mat );
mesh.add( wireframe );

使用polygonOffset将有助于防止网格物体材料与线框线之间发生z角碰撞.因此，线框看起来会好很多.

The use of polygonOffset will help prevent z-fighting between the mesh material and the wireframe line. Consequently, the wireframe will look a lot better.

小提琴: http://jsfiddle.net/tfjvggfu/24/

已更新为three.js r.82

updated to three.js r.82

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