Javascript 镜头后的线条

如何在摄影机视图后面画一条线？请参见图中的示例：

（红线是我要生成的，蓝点是相机。）

我有这段代码生成这条线，我还有鼠标移动：

var material = new THREE.LineBasicMaterial({
    color: 0xff0000,
    linewidth: 5
});

var geometry = new THREE.Geometry();
geometry.vertices.push(
    new THREE.Vector3( 0, 5, 0 ),
    new THREE.Vector3( 5, 0, 0 )
);

var LINHATARGET = new THREE.Line( geometry, material );
LINHATARGET.position.x = 1;
LINHATARGET.position.y = 0;
LINHATARGET.position.z = 0;
scene.add( LINHATARGET );

快速解决方案：

scene.add(camera);
camera.add(line);
line.position.z = -1.0; // put the line in front of the camera

将线作为子对象添加到摄影机将使其跟随其移动

看一看