CameraHelper not linked?

Questions
1

Typing :

camera = new THREE.PerspectiveCamera(30, container.offsetWidth / container.offsetHeight, 0.1, 5);
camera.position.set(0.5, 0.2, 0.5);
var helper = new THREE.CameraHelper( camera);
scene.add( helper );

… whatever the position the camera I set, CameraHelper doesn’t move. Is there any trick missing here?

Thank you guys.

2

Please have a look at: https://threejs.org/examples/#webgl_camera

Do you update your helper in the animation loop?

1 Like
3

Michael, in this example they attach the camera and the helper to e Group.
Seems to work now - don’t know what happened. I’ll reopen this post in case of!

4

The premise of using ‘CameraHelper’ is to use at least two cameras, so that ‘CameraHelper’ will appear completely on the screen.

‘CameraHelper’使用有意义的前提是至少使用两个相机,这样‘CameraHelper’才会完整的出现在屏幕内.

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5

So strange API:

// addition
cameraRig = new THREE.Group();
cameraRig.add( camera2 );
scene.add( cameraRig );

What if we add this in source code? Seems that adding two Groups not changing anything and saving backward compatibility.

6

Had the same problem recently. Looks like you should add the camera itself to the scene too.

scene.add(camera, cameraHelper);