WireframeGeometry 网格几何体

• WireframeGeometry( geometry : BufferGeometry )
  • geometry — 任意几何体对象。

const geometry = new SphereGeometry();
const wireframe = new WireframeGeometry(geometry);
const line = new LineSegments(wireframe);
const mat = line.material as LineBasicMaterial;
mat.depthTest = false;
mat.opacity = 0.5;
mat.transparent = true;

EdgesGeometry 边缘几何体

• EdgesGeometry( geometry : BufferGeometry, thresholdAngle : Integer )
  • geometry — 任何一个几何体对象。
  • thresholdAngle — 仅当相邻面的法线之间的角度（单位为角度）超过这个值时，才会渲染边缘。默认值为1。

const geometry = new SphereGeometry(2, 8, 8);
const edges = new EdgesGeometry(geometry);
const line = new LineSegments(edges);