Rick wrote:
> 
> I always use tga files, are you sure povray and moray can find the file, and
> that the tga really is a tga? -
> 
> Rick

  If it were an improper file format of if Pov were unable to find
it an error would be returned to that effect and the render would stop.

-- 
Ken Tyler -  1100+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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Hi SWIFT ETEBA, you recently wrote in moray.win:

> Is there anyone out there to tell me why when I use a .tga file to produce a
> heightfield, I see a flat plane instead of mountains and valleys?
Only thing I can think of is that the waterlevel is too high, the
heightfield is scaled too small in Z, the TGA file has very little
contrast.

Does Moray show the heightfield as flat, too?
- Lutz
  email : lut### [at] stmuccom
  Web   : http://www.stmuc.com/moray

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381### [at] 194174214110...
> Hi SWIFT ETEBA, you recently wrote in moray.win:
>
> > Is there anyone out there to tell me why when I use a .tga file to
produce a
> > heightfield, I see a flat plane instead of mountains and valleys?
> Only thing I can think of is that the waterlevel is too high, the
> heightfield is scaled too small in Z, the TGA file has very little
> contrast.
>
> Does Moray show the heightfield as flat, too?
> - Lutz
>   email : lut### [at] stmuccom
>   Web   : http://www.stmuc.com/moray
Yes! Moray shows the heightfield flat.
I will try for a different value in Z.
Thanks.

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Did you click on read?


SWIFT ETEBA wrote:

> Is there anyone out there to tell me why when I use a .tga file to produce a
> heightfield, I see a flat plane instead of mountains and valleys?
> Thanks in advance
> Margaritis Paktitis

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Yes! I clicked on READ.
Yes! I altered the Z factor.
Nothing! Always flat
Thanks for your reply.

>Did you click on read?
>
>
>SWIFT ETEBA wrote:
>
>> Is there anyone out there to tell me why when I use a .tga file to
produce a
>> heightfield, I see a flat plane instead of mountains and valleys?
>> Thanks in advance
>> Margaritis Paktitis
>

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SWIFT ETEBA wrote:
> 
> Yes! I clicked on READ.
> Yes! I altered the Z factor.
> Nothing! Always flat
> Thanks for your reply.

If you will send me the tga file I will examine it for you and let you know
if it contains bad data or no data at all.

-- 
Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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> If you will send me the tga file I will examine it for you and let you
know
> if it contains bad data or no data at all.

isnt that what i suggested right at the start of the thread? we seem to have
come full circle..

Que the sound track from lion king.....

Rick

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This is the tga file I am trying to use.
Thanks again and please be gentle with me if all this is caused only because
I am a newbie

382290AC.BBA03AF9@pacbell.net...
>
>
> SWIFT ETEBA wrote:
> >
> > Yes! I clicked on READ.
> > Yes! I altered the Z factor.
> > Nothing! Always flat
> > Thanks for your reply.
>
> If you will send me the tga file I will examine it for you and let you
know
> if it contains bad data or no data at all.
>
> --
> Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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Attachments:
Download 'takis.tga.tar' (193 KB)

Takis Paktitis wrote:
> 
> This is the tga file I am trying to use.
> Thanks again and please be gentle with me if all this is caused only because
> I am a newbie

The tga file contains ho height data because it has only one color - black.
With HF's you need to understand how they work when you are designing the
image to make terrain with it. Black = no height and white = maximum height.
For example if you go into a paint program and put white lettering on a
black background then render it the white lettering will become a raised
text object. If you put black lettering on a white background you will
end up with a raised background when you render it with the letters sunken
into the surface.

There is a great discussion on height fields at this site that you should
read for detailed info on the subject:

http://www.daylongraphics.com/products/leveller/hf.htm

P.S. Please cancel your last post - the one with the attached image.
This is a non binaries group and images should not be posted here.

Thanks,

-- 
Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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ok, that tga you posted is fine - however being totally black it will only
create a perfect flat plane.

open it up in psp, put some big white splodges on it, then try again.

black = 0 height
white = max height

Rick

Takis Paktitis <mpa### [at] groovygr> wrote in message
news:382323fb@news.povray.org...
> This is the tga file I am trying to use.
> Thanks again and please be gentle with me if all this is caused only
because
> I am a newbie

> 382290AC.BBA03AF9@pacbell.net...
> >
> >
> > SWIFT ETEBA wrote:
> > >
> > > Yes! I clicked on READ.
> > > Yes! I altered the Z factor.
> > > Nothing! Always flat
> > > Thanks for your reply.
> >
> > If you will send me the tga file I will examine it for you and let you
> know
> > if it contains bad data or no data at all.
> >
> > --
> > Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> > http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
>
>
>

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