Setting Zoom Limits with OrthographicCamera and TrackballControls

When using an OrthographicCamera with TrackballControls, you need to use different properties to limit the zoom. The minDistance and maxDistance properties are specifically for PerspectiveCamera.

For OrthographicCamera, you should use minZoom and maxZoom instead:

JAVASCRIPTCopied
controls.minZoom = 0.5;  // Minimum zoom level
controls.maxZoom = 2;    // Maximum zoom level

These properties control how much the orthographic camera can zoom in and out. The values represent multipliers of the camera's original view size, so:

• Values less than 1 zoom in (making objects appear larger)
• Values greater than 1 zoom out (making objects appear smaller)

You might need to experiment with the exact values that work for your scene, as the appropriate range depends on your specific setup and the scale of your objects.

If you're using ArcballControls instead, it also supports these same properties for OrthographicCamera:

JAVASCRIPTCopied
controls.minZoom = 0.5;
controls.maxZoom = 2;

Remember that for these changes to take effect, you need to ensure that your controls are being updated in your animation loop with controls.update().