Bring real world creation to your experience with Constructive Solid Geometry (CSG) improvements [Beta]

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#206

ive tried spawning parts but i just couldn’t figure it out lol

#207

though thank you anyway for your response

#208

i got the parts spawning correctly
however i cant figure out intersect and subtract to work on it… well ill figure it out soon enough. I hope.

#209

I have found a case where SplitApart fails to separate small WedgeParts when subtracting.
Attached is a repro file with the wedges in workspace: CSG Issue.rbxl (50.2 KB)

#210

Thanks for bringing the issue up. Looking at it

1 Like
#211

i dont know if we are that far ahead yet but if the color changes why cant we change the material too?

1 Like
#212

Hey guys, is there a way to prevent ‘blinking’ while substracting? Like the part which is going to be substracted is have a small delay, and it’s disappers for like 100 miliseconds, can it be prevented? Thanks

#213

The issue with materials is that currently Roblox has a 1 material per part limitation. (just like a 1 texture per part). This is unfortunately not a trivial thing to fix

1 Like
#214

We do have a solution when using the substitute API. unfortunately, there was a bug causing an interaction with asset loading on devices with slow internet. It’s being worked on

#215

Thank you very much, so there’s no bugs in the code/API’s usage?

#216

:IntersectAsync() appears to be crashing when used on any Union or Negate or Intersect, but only when playing in-game. Trying the same operations on those type of parts in studio works fine, if a little slow. CSG Crash - Roblox test place (uncopylocked; press x to form a cylinder)

1 Like
#217

Thank you for reporting this crash, We will look into this.

1 Like
#218

We are working on some improvements to performance and stability for these new APIs. Since you are active users, we would love to invite you to test these changes out on your places to make sure we aren’t breaking anything. To try out these improvements, please use the following sign-up link: Roblox Betas | CSG Performance & Stability improvements Sign-up

4 Likes
#219

We’ve rolled out the improvements for everyone who signed up! Let us know if you run into any issues.

2 Likes
#220

is this form going to open again in the near future? I would like to try but didn’t see this

2 Likes
#221

@h_vcn Honestly, we’re looking for a very quick turnaround. If you want/need to test immediately, feel free to shoot me or pho01proof a message with the place. Otherwise, we’re trying to look at less than a 2 week turnaround

P.S. That’s a goal assuming nothing unforeseen happens

4 Likes
#222

CalculateConstraintsToPreserve doesn’t seem be taking velocity into account, causing constraints to be removed when they shouldn’t be.

2 Likes
#223

@JLW1009, thank you very much for sharing!
May I ask if you could describe or share a place?

1 Like
#224

It’s pretty easy to replicate on the Simple Tools place, you just have to create enough motion on the part so that the attachment moves by more than the tolerance in one physics step.

1 Like
#225

So I was messing around and found this peculiar glitch(?) where a model containing a humanoid does not replicate new geometry to client. Idk if it is a bug or intended behavior or if there’s some extra coding needed to update the union

Video example: https://youtu.be/H8Upw5XwXqo

1 Like