Tips for restricting camera movement in threejs

Being new to working with threejs, I am struggling to set limits on the camera position within my scene. When using OrbitControls, I noticed that there are no restrictions on how far I can zoom in or out, which I would like to change. Ideally, I want the camera to stop when camera.position.z = 5 and resume restriction when it reaches approximately camera.position.z = 10. I seek to confine the range of camera.position.z between these values. To better understand my goal, you can view the limited camera movement on this website:

My attempted solution:

if (camera.position.z <= 5) {
    camera.position.z = 5;
}
else if (camera.position.z >=10)
{
    camera.position.z = 10;
}

Answer №1

To restrict the zoom levels, you can utilize the OrbitControls.maxDistance and .minDistance properties. By default, these values are set to infinity and zero respectively, allowing unlimited zooming.

controls.maxDistance = 20;
controls.minDistance = 3;

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