Line Trace Over Screen Space Widgets / UMG

Baserage · October 11, 2015, 7:12am

4.9.1

Is it possible to line trace and return a hit result over a widget component and its children?

anonymous_user_9b74c645 · October 12, 2015, 7:26am

What do you mean when you said “line trace”? Is this between UMG widgets?(I am wanting to do this.)
“hit result over a widget component” so UMG widgets to display a number in a text box?(I have a guide for this.)
Need some understanding.

anonymous_user_b9532c9a · October 12, 2015, 8:26pm

Hi Baserage,

Do you mean running a trace over 3D widgets or widgets that are specifically displayed as a HUD? Linetraces are typically done to an object within the level, so with 3D widgets it should be possible as long as you set up your trace visibility/collision settings properly.

alperenakyuz · October 16, 2015, 3:30pm

What you’re asking is probably line tracing on a 3D widget and getting the child widget such as buttons or text inside it that the trace hits. It’s not possible using traces.

motorsep · March 2, 2016, 9:52pm

Could you please elaborate a bit more about trace hit on 3D widget? (I’d like to be able to interact with 3d widget by using crosshair/aim, in mobile VR)

ENiari_Games · July 15, 2016, 3:34am

Then how would you do something of the sort?

anonymous_user_33d428af1 · July 15, 2016, 7:11am

Slate does it all the time when checking out mouse clicks, you can probably use that same logic to find the widget at a specific location.