pickFromPoint Take Longer to Execute on Certain Models

HOOPS Communicator
1

I’ve encountered a performance issue while working on a project that involves surface snapping for certain graphical elements. Specifically, when invoking the snapping method, the process seems to cause noticeable lag. The await pickFromPoint function takes a relatively long time to execute, which results in unresponsive or choppy mouse movement during interaction.

Has anyone experienced similar issues? Are there any effective methods or optimization techniques to improve the performance of surface snapping and reduce the delay caused by pickFromPoint?

Any insights or suggestions would be greatly appreciated. Thank you in advance!

2

Hello @wwj8867486,

If the model in question has a lot of features, such as tessellation lines, this can activate the snapping feature and slow the interaction. If your workflow involves zooming in to a model for better precision, the snapping delay will be less pronounced as there will typically be fewer features to activate the snapping.

Thanks,
Tino

3

Thank you for your response, Tino.

I understand that zooming in can reduce the number of features in view and improve performance. However, in our actual application scenarios, users often need to operate the entire model at a lower zoom level,especially since we are developing a mobile application with limited screen size.

I would like to ask if there are any optimization solutions available when working at smaller scales:

  1. Control or filter the number of displayed feature points
  2. Set display thresholds for feature points
  3. Implement dynamic loading or LOD (Level of Detail) mechanism for feature points

The goal is to maintain basic functionality while improving performance at lower zoom levels. If there are any relevant APIs or best practices for mobile scenarios, please let me know.

Thank you for your help!

4

Hello @wwj8867486,

For the workflow you described, there are no settings or parameters that can reduce the selectivity/processing of particular feature points. Our recommendation here would be to create a feature request in our Support Portal. If there are additional details beyond what you’ve provided already, you can just add those to your feature request.

Thanks,
Tino