Hi

I have worked on rendering .obj files in pov-ray with poseray.

1. There is a setting called "default finish diffuse for maps" at a value of 0.6
? What does that exactly do? and is lower better or higher better?

2. Where can I get a glass texture to my creations?
   Is is just like a normal texture to use on your .mesh file?

3. What are the differences between indoor high quality and outdoor high quality
is that more light on the objects ...when choosing outdoor?

4. Is there any way of choosing another angle of the render in pov-ray or in
poseray for that sake?

Thanks

KC

Post a reply to this message

karmacowboy wrote:
> Hi
> 
> I have worked on rendering .obj files in pov-ray with poseray.
> 
> 1. There is a setting called "default finish diffuse for maps" at a value of 0.6
> ? What does that exactly do? and is lower better or higher better?
> 
> 2. Where can I get a glass texture to my creations?
>    Is is just like a normal texture to use on your .mesh file?
> 
> 3. What are the differences between indoor high quality and outdoor high quality
> is that more light on the objects ...when choosing outdoor?
> 
> 4. Is there any way of choosing another angle of the render in pov-ray or in
> poseray for that sake?
> 
> Thanks
> 
> KC
> 
> 


from the manual:
"Default finish diffuse for maps controls the lightness of the maps 
applied to the scene. Default is 0.6. Higher values make map colors more 
vivid." Typically the default works well but you can experiment and see 
what you like.

You can insert the glass material into any material using the POV-Ray 
material tab. See the pov-ray texture section under the materials 
chapter in the manual. Glass is one of the default materials that comes 
with POV-Ray. You can even type in the POV-Ray code for your own 
materials. PoseRay will insert the needed dependencies in the code 
before rendering.

As for radiosity I am no expert but higher quality usually minimizes 
artifacts but it leads to higher render times. You can go through the 
POV-Ray radiosity sample scenes and get more details.

PoseRay has a preview window. Just rotate, pan or zoom the view using 
the mouse.  If you are using a small screen just click on the preview 
tab "stay on top" in the camera section. This will bring the preview 
window to the top. POV-Ray will render the scene using the same camera 
that was used in PoseRay.

I recommend you go through the manual. It has some tutorials.

FlyerX

Post a reply to this message

karmacowboy wrote:
> 1. There is a setting called "default finish diffuse for maps" at a value
> of 0.6 ? What does that exactly do? and is lower better or higher better?

I think you can learn more by changing the value and comparing the images
than by getting an explanation of what it's for. Play around, experiment!

> 4. Is there any way of choosing another angle of the render in pov-ray or
> in poseray for that sake?

Yes, you can change the vectors in the camera{} block. I never used poseray
so I have no idea if it provides any UI to change that easily.

Post a reply to this message

karmacowboy nous illumina en ce 2008-08-04 08:44 -->
> Hi
> 
> I have worked on rendering .obj files in pov-ray with poseray.
> 
> 1. There is a setting called "default finish diffuse for maps" at a value of 0.6
> ? What does that exactly do? and is lower better or higher better?

It control how much if the incoming light effectively illuminate the texture. 
Higher values make the texture brighter and can cause oversaturation in some cases.
Lower values will make it darker.
None is "better", it all depends on what effect you want.
POV-Ray's default diffuse, if not specified otherwise, is 0.8.

> 
> 2. Where can I get a glass texture to my creations?
>    Is is just like a normal texture to use on your .mesh file?

Just add a transparent texture and an interior statement where you set the ior, 
mass coloration(fade_color, fade_distance and fade_power), optionaly the 
dispersion amount and sampling. You can also add some media. If you use media, 
you need to add "hollow" to your object to allow it to contain the media.
Typical ior for glass is 1.5. It can range from 1.4 to almost 2 for glass. 
Water's ior is about 1.33, and depend on temperature and disolved substances.
Diamond's ior is 2.5, the highest for common natural substances.

> 
> 3. What are the differences between indoor high quality and outdoor high quality
> is that more light on the objects ...when choosing outdoor?

Essentialy, the recursion level. Exterior scenes usualy only need 
recursion_level 1 or maybe 2, interior scenes often need at least 2, end often more.
In outdoor scenes, you mostly trace to the sky of far away objects.
In interior scenes, you almost always trace to the walls and other objects.

outdoor high quality use recursion_level 1 and count 500.
indoor high quality use recursion_level 3 and count 400.

> 
> 4. Is there any way of choosing another angle of the render in pov-ray or in
> poseray for that sake?

You can change the camera location, you can also use rotate and translate.
You can change the angle, add "angle Angle_of_View" or the direction vector: 
larger will reduce the angle of view, smaler will whiden it.
> 
> Thanks
> 
> KC
> 
> 


-- 
Alain
-------------------------------------------------
Any society that would give up a little liberty to gain a little security will 
deserve neither and lose both.
Benjamin Franklin

Post a reply to this message