CSG Failures

THEvortexModels · July 13, 2015, 1:50pm

I found this really annoying bug.

After unioning some parts to create smooth edges,shadows glitch out terribly.

Check out images to see more details.

Silent137 · July 13, 2015, 6:31pm

[quote] I found this really annoying bug.

After unioning some parts to create smooth edges,shadows glitch out terribly.

Check out images to see more details. [/quote]

Do you have the repro place for this? That probably shouldn’t happen!

Dapale · July 13, 2015, 6:40pm

[quote] I found this really annoying bug.

After unioning some parts to create smooth edges,shadows glitch out terribly.

Check out images to see more details. [/quote]

Do you have the repro place for this? That probably shouldn’t happen![/quote]

This happens all the time, when unioning parts into long parts (such as a high rise building), there happens to be really bad shadows which don’t make any sense

EchoReaper · July 13, 2015, 6:51pm

Is this tall enough?

Tried to reproduce what vortex posted but no luck

Silent, you should edit the OP to say that repro files are a necessity for bug reports here here because you must have the appearance of a wizard that people think can magically fix a bug just by looking at it.

Silent137 · July 13, 2015, 7:45pm

Well… about that…

THEvortexModels · July 13, 2015, 8:34pm

Sorry guys,I had file ready but forgot to post it

Here it is

Mister_Mystery · July 13, 2015, 8:49pm

I have another union with a shadow issue. The union is roughly triangular but produces circular shadows.

Silent137 · July 13, 2015, 11:12pm

[quote] I have another union with a shadow issue. The union is roughly triangular but produces circular shadows.

[/quote]

Without a repro place I’m unsure if this is a rendering issue, a CSG issue, or both

Mister_Mystery · July 13, 2015, 11:43pm

[quote] I have another union with a shadow issue. The union is roughly triangular but produces circular shadows.

[/quote]

Without a repro place I’m unsure if this is a rendering issue, a CSG issue, or both :([/quote]
But I did attach the file…
EDIT: Can rbxmx files not be attached? I’ve tried attaching as a zip file this time.

EchoReaper · July 14, 2015, 12:40am

Yeah – rbxm/rbxl files can be attached but rbxmx and rbxlx files cannot be attached:

I guess whoever was whitelisted the rbxm/rbxl files forgot about the xml equivalents.

Silent137 · July 14, 2015, 6:36pm

Fixed

Crykee · July 19, 2015, 5:33pm

Union rendering error:

As8D · July 30, 2015, 2:05am

Same problem as Crykee - here’s some more material to work with.

As8D · August 6, 2015, 1:05am

User PearSprite has reported his unions disappearing after a few saves and working on it.
He’s uploaded it here, in case it’s still free-to-take when someone takes a look at it:

Trying to seperate the union will return Union Unsolvable -1.
The union in the free model is according to him:

[quote=PearSprite]that’s the one that went invisible
but that’s a previous version
so it’s not completely corrupt yet
i didn’t give you the actual corrupt version
that one is when it went unseparable[/quote]

woot3 · August 17, 2015, 6:58pm

Something quite interesting happened to me the other day. I created a place and made a union, the union looked a little funny. When I reopened the place the Union was gone and there was this error in the output.

[size=2]SolidModelContentProvider failed to process http://www.roblox.com//asset/?id=29526480 because Unrecognized format[/size]

Which in turn links to a model created 5 years ago. http://www.roblox.com/Restraunt-Seats-and-Table-item?id=29526480

I haven’t touched the file that it was saved to and I am unable to reproduce this in anyway. I’ve attached a model containing the union.

DieSoft · August 18, 2015, 1:21pm

Whenever I try to union these two objects, instead of the NegativePart negating a section from the union it adds the entire NegativePart to the union (see image below). No clue why this happens but hopefully the information provided can help out to solve this issue.

:shocked:

jcfc · August 18, 2015, 4:07pm

Increase the polygon limit
Pre-loading of unions
Better CSG union calculations
Box collisions (for lag reasons)
Multiple materials
Less buggy behaviour (invisible unions, errors)
Additional union operation commands (intersect)

EchoReaper · August 18, 2015, 4:13pm

“- Increase the polygon limit”
Pretty sure they haven’t increased this because the format they store them in doesn’t allow it

“- Pre-loading of unions”
Yes please

“- Box collisions (for lag reasons)”
Khanovich said he’d look into it if someone provided him a game that had lag issues due to CSG physics

“- Multiple materials”
I guess

“- Additional union operation commands (intersect)”
You can do this with plugins – there’s a function for it listed on the wiki, and if you’re not a scripter, you can use this: http://www.roblox.com/CSG-Intersect-and-Brute-Force-item?id=248826344 (you’ll probably like the brute force even more than the intersect)

“- Less buggy behaviour (invisible unions, errors)”
“- Better CSG union calculations”
Apparently the issue is with Geometros and not them, but it’s weird considering that I can inject meshes with almost 100% success with good MeshData and PhysicsData. I would assume the problem is with ChildData.

gkku · August 18, 2015, 5:20pm

Though when you inject a model as a union you’re handing it a blueprint you already figured out and saying “do this for me”. When you union 2 spheres together you’re not telling it anything besides “here’s these 2 things, put them together for me” so it has to figure out how to combine them in an expected manner (“solving” it).

EchoReaper · August 18, 2015, 5:54pm

All I’m giving it are coordinates and faces. I could convert every BasePart to coordinates and faces and that would work, but you aren’t able to union regular parts together at odd angles, so I assume ROBLOX doesn’t do that.