Subject:
|
Re: POV-Ray help needed
|
Newsgroups:
|
lugnet.cad.dev
|
Date:
|
Thu, 9 Apr 2009 21:49:33 GMT
|
Viewed:
|
12050 times
|
| |
|
|
Travis Cobbs wrote:
> In lugnet.cad.dev, Roland Melkert wrote:
> > That could be interesting, My problem at the moment is indeed finding
> > the correct camera angle. Point is I do not (always) have access to
> > OpenGL during export so I have to recreate the camera with the eye, up
> > and lookat vectors I also us for gluLookAt. I also copy the 60 degree
> > FOV I use in gluPerspective.
> >
> > But like said this does not give the wanted result, the 'zoom' is off. I
> > am now looking into using the OpenGL frustum as a starting point in
> > finding the angle.
>
> I believe that POV's FOV is the horizontal field of view, while OpenGL's is
> vertical field of view. So you have to convert from one to the other (which I
> do in LDView). Set your rendering window in both the OpenGL view and the POV
> rendering to square to check if this is your problem. If the views come out the
> same, you'll know that you have found the problem.
>
> --Travis
Hi Travis,
I've finally picked up the povray export project again, You were right I
needed to calculate the horizontal fov from the vertical one used in OpenGL.
Also you may be interested in knowing that I now also have a basic
"hierarchical compositions" export in place (no lgeo, no primitive
substitutions (yet)). And it seems the mesh2 approach, i used before, is
about 15-20% faster on bigger models. So I keep that option in the final
version for faster test runs.
Roland
|
|
Message has 1 Reply:
 | | Re: POV-Ray help needed
|
| (...) Thanks for the info. I have implemented mesh2 support in LDView's export as part of my new curve smoothing support for POV exports, but haven't completely removed the mesh support (although it is currently hard-coded to use mesh2 whether or (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
|
Message is in Reply To:
| | Re: POV-Ray help needed
|
| (...) I believe that POV's FOV is the horizontal field of view, while OpenGL's is vertical field of view. So you have to convert from one to the other (which I do in LDView). Set your rendering window in both the OpenGL view and the POV rendering to (...) (16 years ago, 26-Jun-08, to lugnet.cad.dev)
|
7 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
