Bug Viewport Orthographic

[Anonymous]

Hello, 

I have a problem. When I select an object in my scene, I switch automatically  on the Orthographic viewport.

I used 3dsmax 2017 and the SP3 is installed.. Help me please!

Ivan

[Alfred.DeFlaminis]

Hello @Anonymous,

Thanks for the information.  It's tricky because I can't log it as a bug for W10 and Max 2016 since 2016 is technically unsupported/uncertified for use on W10.  (I even tested in W10 and it worked fine for me with no error.)  

I've seen in your video that this is happening, so I don't doubt you at all.  The fact that is works fine in 2017 on W10 makes me think it may be one of those things that's related to the unsupported OS.  If you happen to come across another action that produces this please let me know.  Otherwise I am unsure how I can properly investigate this.  

Best Regards, 

[Anonymous]

Hello @Alfred.DeFlaminis,

I just re-installed 3dsmax 2016 on my computer, and the same thing happens. This should be a conflict or something like that.

I will check on others computers at my office.

[Alfred.DeFlaminis]

Thank you for the update @Anonymous,

I'm sorry you had to go through all that.  I wonder, do any of the compatibility modes help with this?  It's a reach but I wonder if it has to do with differences in handling of the code.  (I'm not a developer so it's a guess.)  Thanks for all the communication thus far, it's very helpful.  

Best Regards,

[Anonymous]

I found one solution.And it works for me.

If you have dwg files in your scene then: select all dwg files, then in modifier panel add editable poly and then colapse all.

Cheers

[Anonymous]

I haven't imported any dwg files in the scene 😉

[Macker101]

I'm having this problem too.

Merged all geometry into new file, problem persists. it's truly awful and actually stopping me from working.

It isn't adaptive degredation. Switching off the viewcube helped in perspective - temporarily. Now all all the top/bottom/front etc viewports are affected too.

P.S. This is the first time I've taken to the forums to report it though, as I (and my colleagues) usually just suffer through it because our deadlines don't give us the time to log these things. Suffice to say we're absolutely sick and tired of such a basic feature in a 3D application not working. If anyone else has a solution to working in 3D without a viewport then I'm all ears.

[MrScratcher]

Boy, this bug is horrific. I am getting it on two different computers, Max 2018 (20.0.0.966). For me, it's when importing AI files as shapes. Steps to reproduce are import an AI file, merge into scene. I always have to Xform it up to get the scale right, then collapse the stack to preserve the transformation. Then start selecting or using the imported shape and it completely makes Max unusable. Everything jumps to orthographic view and very zoomed out when you select things. This has happened on multiple occasions with imported AI file, just finally took the time to research the issue. I'll report back if I find any workarounds. 

Edit: Ok, looks like there is a workaround. If you keep at least two viewports open and always keep one of them on the janky orthographic view that it loves so much, you can use the other standard viewports (front, top, etc.) as expected without the jumping to ortho. (But you can't go to fullscreen viewport sadly). Also a note, this bug will damage your scene permanently. Even removing the offending imported AI, the issue persisted.

[Anonymous]

Dude, i think i have found a solution from a related post (This one: https://forums.autodesk.com/t5/3ds-max-forum/3ds-max-2016-viewport-keep-jumping/td-p/5674736 )

It basically says to DISABLE the AUTOCAM plugin by renaming it in the /stdplugins max folder, check the link.

i try it and totally works form me.

Now my soul is calmed and chillin with a cold beer. CHEERS!

[Anonymous]

I experienced the same problem of jumping camera to orthogonal each time i selected an object.

To fix that : I went to the Viewport Layout tab and changed from a 4 view which was my original layout to a third views.

...

[Byteman]

Few weeks ago, I've reported it as a bug for Max 2018. Issue still exists, but happens on a file which contains imported models from several sources. (Sketchup, Autocad etc.) The reason is likely a bad object, destroying the session's integrity.

After the view turns to Ortho, if you try to orbit the view, Object center gizmos move to viewport center like a visual glitch. Actually objects seem to be moved to infinity. If you render the scene like that, Mental Ray message window gives clues to what is going on. There are several invalid normal errors:

MSG 0.0 186 MB warn : expected structure "E" missing from "m" shader declaration
MSG 0.0 609 MB error: Invalid normal found on object "balta" on face 7827, replacing with a dummy normal

LIB  0.0     10 MB warn   292006: cannot invert a transformation matrix

SCEN 0.4 922 MB error 071011: world-to-camera transformation is singular, abort RC 0.4 922 MB error 081008: scene preprocessing failed

Final is the crash message. Max hangs and you have to terminate the program. But interestingly, it doesn't happen right now, although nothing has changed. I think Autocam plugin has nothing to do with it. May be sparing a few bytes of memory and  just delay the issue.

Figuring out the reason of such problems is sheer "mission impossible" when those rendered pixels are the composition of such infinitely many components. Even Windows 10's memory management shoud be examined.

[Anonymous]

maybe, maybe not... maybe its a bug in the matrix causing a *deja vu.*
*The thing is, that renaming for disable-ing the autocam works for me real
good. Never ever had the same issue here.*

*Thank dude.*

[alanza.br]

Hello I have a similar problem!!!

Whats de solution?

Do you speak spanish???

[Byteman]

Sorry I don't speak Spanish. Neither could I find a reasonable solution to the problem, however it is obvious that this instability is due to some incompatibility between the imported models and 3ds Max. It may as well occur even when you have no imported models. 

There is a list of "things to do when 3ds Max shows sluggish performance".  The most useful advice from the list is collapsing the Modifier Stack and converting your models to editable meshes. I believe Editable Poly also has issues.

Anyway, converting models to Editable Mesh and sometimes attaching a bad model to a simple box object solves many problems. 

My daily problem dose is about another performance issue. Scene is complex. There are several imported Sketchup models. 3DS Max gets stuck about a minute or less while working but periodically. There is a 5500 frame walkthrough animation. It happens almost everytime between moving an object and switching to Motion Path move mode. I turn one mode on and wait for 30 secs or so then I can move my keyframes. After moving a few times or change viewport and do something else, again it gets stuck. 

I can't finish the job. I'm sure collapsing stacks will solve my problem, too, but I need my booleans and some modifiers. If only I could collapse only the unnecessary models automatically. I have thousands of objects.

[alanza.br]

Thank you friend. I'll try to do what you said, I hope it works out !!! Thanks for the help.

[alanza.br]

Hello I have a similar problem!!!

Whats de solution?

Do you speak spanish???