Problems with subtracting

anonymous_user_5e1367941 · March 20, 2015, 2:34pm

Hi, i’m new with Unreal Engine.
Something weird it’s happening when I try to substract in the editor. I’m using BSP and i’m trying to substract an sphere over a cone:

So, when I try to do it, and I put the sphere closer to the cone:

Something appears into the sphere. And when I finally substract it

I don’t understand why. It substracts, but at the same time it adds thing that i never created inside the map.

Am I doing something wrong?

anonymous_user_b9532c9a · March 20, 2015, 4:10pm

what are the settings you have used in the details pane of both your additive cone and your subtractive sphere brushes?

anonymous_user_5e1367941 · March 20, 2015, 4:46pm

Sphere

Cone

I reset them to default.

anonymous_user_b9532c9a · March 20, 2015, 5:45pm

Is this in the main UE4 Editor or is it in the UT Editor? There is a known issue in the UT editor that causes a similar effect to occur, however I cannot get this to reproduce in the 4.7.3 version of the main editor. Which version are you on?

anonymous_user_5e1367941 · March 20, 2015, 11:19pm

UE4 Editor, 4.7.3 version. I only get this error when i try to subtract in the cone. I have a cube down and it doesn’t give me any problems.

anonymous_user_b9532c9a · March 23, 2015, 7:45pm

Unfortunately I haven’t been able to reproduce this on my end. Here are the steps I am taking, are you doing anything differently than I am?

Open Editor (any project)
Create new additive brush (cone)
Create new subtractive brush (sphere)
Move sphere to collide with cone

I have tried various rotations, scales, and hard values set in the details pane, specifically the radius on the sphere and the number of sides on the cone.

anonymous_user_5e1367941 · March 24, 2015, 4:18pm

Thank you for your help, .
I did what you say and i’m not having any problems when I try to reproduce this in another project.
Maybe I did something wrong before, but I can’t figure what.

anonymous_user_b9532c9a · March 24, 2015, 5:32pm

BSP’s can be extremely finicky, but I’m happy to hear you are not experiencing this error again. If you do, please comment and let me know what steps you took that did create this and I’ll be happy to try again. For now I will mark this as answered for tracking purposes.

anonymous_user_5e1367941 · March 25, 2015, 4:37pm

I add this; I solved it exporting everything to a new project. Thanks for your help!