Hello Ventuzians!
THE FORUMS ARE CLOSED!
Please join our discord server HERE!! << click me
We are shutting our Ventuz Forum, but don't worry, it will all be archived for you to search in if you have a query. From now on, please add all your comments, questions or observations into our Discord Server
Thanks for the great time - see you on discord!!
Dee, Karol, Daniel and the whoooole Product and Support team!
THE FORUMS ARE CLOSED!
Please join our discord server HERE!! << click me
We are shutting our Ventuz Forum, but don't worry, it will all be archived for you to search in if you have a query. From now on, please add all your comments, questions or observations into our Discord Server
Thanks for the great time - see you on discord!!
Dee, Karol, Daniel and the whoooole Product and Support team!
fisheye-foto on a hemisphere
Moderator: Support
fisheye-foto on a hemisphere
hi ventuzians,
since several days i try to map a fisheye-foto on a hemisphere, see picture below.
Surely it's not a ventuz-specific theme.
Hemisphere is in motion, so the mapping should stay fixed on the sphere.
What mapping in texture-node?
Any ideas? Google was not helpful
I only expect a little hint, not a complete solution.
Thanks a lot for your answers
Stephan
since several days i try to map a fisheye-foto on a hemisphere, see picture below.
Surely it's not a ventuz-specific theme.
Hemisphere is in motion, so the mapping should stay fixed on the sphere.
What mapping in texture-node?
Any ideas? Google was not helpful
I only expect a little hint, not a complete solution.
Thanks a lot for your answers
Stephan
Re: fisheye-foto on a hemisphere
take a look here: http://www.youtube.com/watch?v=OD_p9bTpbQ4
3DJo - [Ventuz] freelancer and trainer
Re: fisheye-foto on a hemisphere
Thanks Joschy,
unfortunately no solution shown in this clip for my problem.
The job is to import these already existing rectangular square fisheye pictures (unchanged) in ventuz and then mapping upon the hemisphere.
Any ideas from other ventuz users?
many greet,
stephan
unfortunately no solution shown in this clip for my problem.
The job is to import these already existing rectangular square fisheye pictures (unchanged) in ventuz and then mapping upon the hemisphere.
Any ideas from other ventuz users?
many greet,
stephan
Re: fisheye-foto on a hemisphere
Hi Stephan!
I think you would need to model a hemisphere with the appropriate UV-coordinates. Ventuz does not provide such a geometry primitive so you have to do it on your own.
This hemisphere needs UVs in the range [0;1] to map the whole texture!
Cheers
Karol
I think you would need to model a hemisphere with the appropriate UV-coordinates. Ventuz does not provide such a geometry primitive so you have to do it on your own.
This hemisphere needs UVs in the range [0;1] to map the whole texture!
Cheers
Karol
Re: fisheye-foto on a hemisphere
Hi Karol,
thanks for answering.
I created this hemisphere in 3dsmax and import it in ventuz, this works fine (see pictures).
The following mapping in ventuz is my problem because the texture is not fixed when moving the hemisphere.
stephan
thanks for answering.
I created this hemisphere in 3dsmax and import it in ventuz, this works fine (see pictures).
The following mapping in ventuz is my problem because the texture is not fixed when moving the hemisphere.
stephan
Re: fisheye-foto on a hemisphere
Ah ok!
You mean when you rotate the hemisphere the texture does not rotate with the object?
This behaviour is affected by the parameters of the Mapping 2D node. But with default setting this should work correctly.
Karol
You mean when you rotate the hemisphere the texture does not rotate with the object?
This behaviour is affected by the parameters of the Mapping 2D node. But with default setting this should work correctly.
Karol
Re: fisheye-foto on a hemisphere
Exactly Karol,
but I tried all possible mapping constellations with no success, so I quit my attempts and asked the forum.
Thanks for your efforts!
stephan
but I tried all possible mapping constellations with no success, so I quit my attempts and asked the forum.
Thanks for your efforts!
stephan
Re: fisheye-foto on a hemisphere
Could you post a simple demo scene (Archive VZA) so we could take a look inside your scene?
Re: fisheye-foto on a hemisphere
little demo shows my problem.
greets from stephan
greets from stephan
- Attachments
-
- mapping_problem.vza
- (1.04 MiB) Downloaded 289 times
Re: fisheye-foto on a hemisphere
Hi Stephan,
your hemisphere does not have the correct UV coordinates!
First of all the pole of your hemisphere must have the UV coordinate [0.5;0.5].
And the UVs on the 'equator' must be such that none of the black fisheye-image region is mapped to the model.
I don't know if the 3D content creation tools can calculate such UVs. Probably you need special software.
Btw. a very interesting web-page for such stuff: http://paulbourke.net/dome/
A different approach would be to program a special shader but that's not that easy neither.
Karol
your hemisphere does not have the correct UV coordinates!
First of all the pole of your hemisphere must have the UV coordinate [0.5;0.5].
And the UVs on the 'equator' must be such that none of the black fisheye-image region is mapped to the model.
I don't know if the 3D content creation tools can calculate such UVs. Probably you need special software.
Btw. a very interesting web-page for such stuff: http://paulbourke.net/dome/
A different approach would be to program a special shader but that's not that easy neither.
Karol