Detect the normal of a polygon face

Development Programming & Scripting Blueprint
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1

Hello everyone.

I am trying to deflect a non physic projectile with a pipe, So I thinked to get the normal of the face the projectile hits using a linetrace, but when I get the normal that always returned me the normal of the object, not the normal of the impact face.

Anyone knows how can I detect that normal to send the projectile in that way? I am using blueprints for all of this.

Thanks for your time

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2

Check if this helps:

Edit:
In short - the normal should be correct. To draw it correctly, however you should make:

Start = ImpactPoint;
End = ImpactPoint + ImpactNormal * 100.0f;
//The *100 is just because the ImpactNormal is 1 centimeter long by definition and you might not see it.

Also, you don’t need the second LineTraceByChannel just to draw a line. You can use DrawDebugLine instead.

3

Non physics actors can still use Collision hit results and dont have to trace in addition to that. The collision should give an impact normal