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Very strange UV projector bug

Posted: Thu Nov 23, 2017 12:22 am
by feynman
When I import a cube from the library, scale it and rotate it a bit, the cubic or planar projector becomes skewed when rotated (to place a decal on one of the faces in a specific location); also when I click normalise (for a real scale material); also when I create a new projector. Also, one can see the XYZ axes are totally off and unrelated to the orientation of the object.

When I take an icosahedron or torus from the library, cubic or planar projectors (normalised or adjusted) behave normally and it is easy to slap on product graphics and place/rotate them as expected.

What's going on here? Thanks for some advice!

[img]https://www.dropbox.com/s/oma1uqvysdi1r ... 1.png?dl=0[/img]
[img]https://www.dropbox.com/s/jh1c9b0ryxnnw ... 2.png?dl=0[/img]

Oops, imgur or dropbox hosted images no longer embed? Where else to upload?

Re: Very strange UV projector bug

Posted: Thu Nov 23, 2017 12:31 am
by seghier
Hi
for the image you need put the link of the png

Image

Image

can you share the scene for test

Re: Very strange UV projector bug

Posted: Thu Nov 23, 2017 12:53 am
by feynman
Cheers, there you go https://www.dropbox.com/sh/7zdf6kos1w33 ... e79fa?dl=0 Very strange, no? Any hints much appreciated!

Re: Very strange UV projector bug

Posted: Thu Nov 23, 2017 1:00 am
by seghier
is this a new scene or the scene with the problem ?
i use maxwell V4 and the problem don't exist in this scene ; if you use V3 maybe it is a bug

Re: Very strange UV projector bug

Posted: Thu Nov 23, 2017 1:35 am
by feynman
Thanks. Yes, that's the scene. I'm using 3 and 4. This particular scene is 3. Just plain weird. Also that zeroed objects show slight translations, when a realscale material is assigned.

Re: Very strange UV projector bug

Posted: Thu Nov 23, 2017 1:55 am
by seghier
do you have the same problem in V4 ? i don't understand that " when a realscale material is assigned." and i don't see any problem in your scene.
if you use a simple material with checker texture and capture a video maybe it will be clear

Re: Very strange UV projector bug

Posted: Thu Nov 23, 2017 5:18 pm
by feynman
Yep. The same thing happens. Export OBJ data from NX, Alias or Catia. Import. Scale, place and rotate until happy. Assign realscale material - and the coordinate(s) change, but the object actually does not shift visibly, even weirder. If one then clicks Reset, one gets those "black triangles" and even odder visual effects.

This way, it is really hard to position and rotate assemblies in Maxwell Studio. It certainly is a bug.

Image
https://imgur.com/a/YkxjG

Still can't embed imgur hosted images here, btw. - neither in IMG tags, nor just posted as a link directly.

Re: Very strange UV projector bug

Posted: Thu Nov 23, 2017 5:53 pm
by seghier
for the link : right click on the image and open it in a new tab than use new link

https://i.imgur.com/CgqKYTV.png

Re: Very strange UV projector bug

Posted: Tue Dec 05, 2017 6:25 pm
by feynman
I just upgraded to V4, hoping that at least CPU speed is now on par with V3 in its last incarnation - and the Maxwell Studio realscale material and UV projector bug still exists; see a short Jing video here [flv]https://www.screencast.com/t/t5EKD79S[/flv]