I am trying to render a flat glass plate and mirror. What
I get is large distortions in the reflections. Is there 
anyway to define a "prefectly' flat/smooth surface in 
moray/povray?

TIA...

	R

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Rocco Pochy wrote:

> I am trying to render a flat glass plate and mirror. What
> I get is large distortions in the reflections. Is there
> anyway to define a "prefectly' flat/smooth surface in
> moray/povray?

For some bizarre reason, a texture with no normal has a big old bozo
(granite? I dunno) normal applied by default.

Give it a normal with a bump size of 0.

Yeah, this really sucks.

Simon
http://home.istar.ca/~sdevet

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Hi
Thanks for the tip !!!
I just spent ages trying to figure out why a rendered button I was making
for a windows program was looking horrible. I am using the latest Moray and
Pov versions, the Phong highlight was very odd and non uniform. I tried your
tip of putting in an agate normal with a bump size of 0. Hey presto, the
highlighting I was expecting. See the 2 small samples attached.I haven't
looked into this problem, anyone know if this is a Moray or more likely a
POV bug ?

                                 Geoff


Simon de Vet wrote in message <369FB0E6.185A71C0@istar.ca>...
>
>
>Rocco Pochy wrote:
>
>> I am trying to render a flat glass plate and mirror. What
>> I get is large distortions in the reflections. Is there
>> anyway to define a "prefectly' flat/smooth surface in
>> moray/povray?
>
>For some bizarre reason, a texture with no normal has a big old bozo
>(granite? I dunno) normal applied by default.
>
>Give it a normal with a bump size of 0.
>
>Yeah, this really sucks.
>
>Simon
>http://home.istar.ca/~sdevet
>

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Attachments:
Download 'ok.gif' (6 KB) Download 'odd.gif' (6 KB)

Preview of image 'ok.gif'

Preview of image 'odd.gif'

Hi Simon de Vet, you recently wrote in moray.win:

> For some bizarre reason, a texture with no normal has a big old bozo
> (granite? I dunno) normal applied by default.
That's was my fault. The last maintenance releas of Moray includes a
file called MorayPOV.inc which defines a default texture with normals
and phong highlighting.

Simply delete or edit the MorayPOV.inc file and the renderings will be
as expected.

The final V3.1 release (due early next week) will fix this.

- Lutz
  email : lut### [at] stmuccom
  Web   : http://www.stmuc.com/moray

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Geoff wrote:

> Hi
> Thanks for the tip !!!
> I just spent ages trying to figure out why a rendered button I was making
> for a windows program was looking horrible. I am using the latest Moray and
> Pov versions, the Phong highlight was very odd and non uniform. I tried your
> tip of putting in an agate normal with a bump size of 0. Hey presto, the
> highlighting I was expecting. See the 2 small samples attached.I haven't
> looked into this problem, anyone know if this is a Moray or more likely a
> POV bug ?

Nice button. May I ask how you got the nice rounded edge between the conical
base and the flat surface?

Simon
http://home.istar.ca/~sdevet

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Simon de Vet schrieb in Nachricht <36A### [at] istarca>...
>
>Nice button. May I ask how you got the nice rounded edge between the
conical
>base and the flat surface?
>
>Simon
>http://home.istar.ca/~sdevet


Don't know how he did it, but you could do it:
- using a lathe object
- using a sor (ahem, no, impossible: multiple points with same y value)
- using a CSG of a cylinder, a cone and a torus (hard to adjust the torus on
the cone)
- using a non-standard transformation of a superellipsoid (hard to figure
out).

So I think it was a lathe object (I would use one) here. OR a CSG of a sor
and a cylinder.

But your tip was very useful. Is this default bozo documented somewhere
(except for the source code, which I didn't have a look at yet)?

O sorry again. I should have read a bit further. It was in the MorayPOV.inc,
not in POV-Ray. I am rather new to Moray, but I like it.

--
Rudy Velthuis

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