javascript - 如何在三个js中为子网格添加轮廓

Question

我想给网格添加轮廓。我按照示例 which created a new mesh using the same geometry, and scaled the mesh.

    var outlineMaterial = new THREE.MeshBasicMaterial({color: 0x00ffff, side: THREE.BackSide});
    this.outlineMesh = new THREE.Mesh(target.geometry, outlineMaterial);
    this.outlineMesh.quaternion = target.quaternion;
    this.outlineMesh.position = target.position;
    this.outlineMesh.scale.copy(target.scale);
    this.outlineMesh.scale.multiplyScalar(1.05);
    this.scene.add(this.outlineMesh);

工作正常，outlineMesh 的位置始终与目标网格相同。但是，当我将目标网格作为子网格添加到其他网格时，outlineMesh 的位置与目标网格不同。我以为是因为target position和parent的坐标有关，但是outlineMesh还在world坐标。

知道如何为子网格制作轮廓吗？非常感谢!

Answer 1

只需将 outlineMesh 添加为目标 mesh 的子项，如下所示:

var outlineMaterial = new THREE.MeshBasicMaterial( { color: 0x00ffff, side: THREE.BackSide } );
outlineMesh = new THREE.Mesh( geometry, outlineMaterial );
outlineMesh.scale.multiplyScalar( 1.05 );
mesh.add( outlineMesh );

three.js r.67