const materialLine = new THREE.LineBasicMaterial( { color: 0x0000ff,linewidth:20 } );
const pointsLine = [];
pointsLine.push( new THREE.Vector3( - 10, 0, 0 ) );
pointsLine.push( new THREE.Vector3( 0, 10, 0 ) );
pointsLine.push( new THREE.Vector3( 10, 0, 0 ) );
const geometryLine = new THREE.BufferGeometry().setFromPoints( pointsLine );
const line = new THREE.Line( geometryLine, materialLine );
line.computeLineDistances();
scene.add( line );
可以创建一个两条线组成的向上的三角形∧,但当我想改变它的宽度时,linewidth的设置并没有用;
原因如下

那有没有什么办法呐,看到官网包里面有一个利用mesh的操作

官方默认为5
改变为20时
