Making new Static Mesh using BSPs, encountering problem:

I have an additive cone BSP and want to apply a subtractive cylindrical BSP to it and then make that into a new static mesh. I’m encountering a strange issue:



I’m somewhat new and have no idea why this is happening. It looks almost like the cylinder is subtracting from an invisible object, and the new dimensions that result are now visible… But there are no such invisible objects. The invisible objects also seem to emanate (for lack of a better word) from the cone brush. I’d really appreciate any insight on this problem. Thanks!

Hey Kelsomatic,

Be sure to build your geometry after editing your BSPs. I am also curious if this issue occurs in engine version 4.8.3?

Would you mind attempting to reproduce the issue in build 4.8.3? I have attempted to do this on my end, but am not seeing what you are reporting.

There is a setting within the ‘Editor Preferences’ to ‘Update BSP Automatically’ which can give you a preview to what you can see when the geometry is built. To find this option go to the Editor Preferences - Miscellaneous section.

Thank you,

I’ve tried building geometry and as it turns out the setting you mentioned has been on this whole time. I’ve discovered that this issue only appears once I change the scale of any dimension of the cone. It does NOT occur when I alter the scale of of the cylinder. Altering anything aside from the scale of the cone seems to leave everything as you’d expect. Not sure if this helps you better understand what’s going on. Thanks.

Thank you for the update. Were you able to reproduce this in 4.8.3?

I am not seeing this in either version of the engine. Can you reproduce this in your current engine version in a new project or does this only occur in this project?

Thank you,

I was using 4.7.6 and I just moved the project to 4.8.3 and everything is working perfectly! Thanks for the tip!