threejs物体加线框

let edges = new THREE.EdgesGeometry( tWall.mWallMesh.geometry );

tWall.m_Outline = new THREE.LineSegments( edges, new THREE.LineBasicMaterial( { color: 0x4b96ff,depthTest:false,transparent:true } ) );

GlobalApi.scene3D.add( tWall.m_Outline );