Is this what you are after.

Dave B



"yooper" <Out### [at] huntelnet> wrote in message
news:3aabbed2$1@news.povray.org...
> If anybody has any good ideas I
> would
> > love to hear them. I just want to get my teeth stuck into something new.
> >
> > Happy Rendering
> >
> > Dave B
> -------------
> Lookin' good . . .
>
> Here's an idea that I haven't had much time to explore . . .
> I want to use an image file to create a stained-glass window
> with light shining thru it and thru some media into a dark
> room . . . rays streaming thru it all.
> I started but ran into trouble getting the .png format to be
> transparent.  I think I have that figured out . . . changing it
> to 256 colors . . . but haven't had time to get back to it.
> And I know nothing about media . . .
> Also . . . I suffer from the same affliction that you have . . .
> I keep getting new ideas along the way and easily get diverted
> in other directions.  Whata ya gonna do . . . ;)
> So . . . if that's something you would like to explore . . .
> have at it and enjoy. . .
> Y
> POVaholic
>
>

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Attachments:
Download 'stain_window.jpg' (18 KB)

Preview of image 'stain_window.jpg'

Dave B wrote:
> I have sorted a couple of things that you brought up in earlier
> posts but I dont think I am going to do any more.
> <SNIP>

Oh yes, I like that very much, time to call it finished.

Dave B continued:
> <SNIP>
> If anybody has any good ideas I would love to hear them. I just
> want to get my teeth stuck into something new.
> <SNIP>

How about the IRTC Stills competition. Current theme is "Fortress".

Inspire any idea's ?

--
Duncan Gray
(warning: may contain traces of nut)

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You have to (I believe and could be very wrong in this) manually add the
alpha channel to the png to get transparency.
--------
How????  I have PSP6 but the help files don't seem to address this . . .
. .
Y

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Is this what you are after.

Dave B
----------
Yup . . . intended having it shine down onto the floor tho . . .
Got a snippet of code for the image_map portion?
Also don't understand how the .png and alpha channel thing works
so would appreciate any hints there.
TIA
. .
Y

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"yooper" <Out### [at] huntelnet> wrote in message
news:3aac5443$1@news.povray.org...
> Also don't understand how the .png and alpha channel thing works
> so would appreciate any hints there.

You output a PNG or TGA having a Alpha Channel by using +UA on the
command-line or Output_Alpha=On in the INI.  Needs to be at least a 24 bit
image (default).  Any transmit in the pigments will be part of that, and in
PSP you can see it by going to the Selections or Masks menu (I still have
PSP 5 but I'm guessing it's the same) and Load from Alpha Channel... once
the image file is open.
Be aware that MegaPov 0.7 seems to break the Alpha Channel; also that filter
is not converted to it, only transmit.  Value can be 0 to 1 so it can vary
in transparency but color doesn't matter.

Bob H.

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"yooper" <Out### [at] huntelnet> wrote in message
news:3aac5442$1@news.povray.org...
> You have to (I believe and could be very wrong in this) manually add the
> alpha channel to the png to get transparency.
> --------
> How????  I have PSP6 but the help files don't seem to address this . . .

I can't seem to do it in PSP 5.  Supposed to be able to make a selection
(could be All of image) and then Save to Alpha Channel but I never use it so
I don't know how to go about it.  If I try, all I get is a blank.

Bob H.

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"Bob H." wrote:

> I can't seem to do it in PSP 5.  Supposed to be able to make a selection
> (could be All of image) and then Save to Alpha Channel

The Gimp does this.
--
Bye,
Pabs

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Bob H. wrote in message <3aac6351@news.povray.org>...
>"yooper" <Out### [at] huntelnet> wrote in message
>news:3aac5442$1@news.povray.org...
>> You have to (I believe and could be very wrong in this) manually add the
>> alpha channel to the png to get transparency.
>> --------
>> How????  I have PSP6 but the help files don't seem to address this . . .
>
>I can't seem to do it in PSP 5.  Supposed to be able to make a selection
>(could be All of image) and then Save to Alpha Channel but I never use it
so
>I don't know how to go about it.  If I try, all I get is a blank.
>
>Bob H.


In PSP 5,6, or 7 you make a mask from the image from the image itself. You
can then save it to the alpha channel just like a selection. You'll probably
want to delete the mask afterwards, and that's ok because it'll still be in
the alpha channel. While it is still a mask though, you can choose to edit
the mask as a separate bitmap. This will let you use the various
photo-retouch tools  ( i.e. smudge, darken, lighten, etc.) to gain more
control over the transparency. When you save the image, any file format
supporting alpha channel will have it. Hope that helps.

Batronyx ^"^
bat### [at] cadronhsacom

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thanks Bob . . .

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In PSP 5,6, or 7 you make a mask from the image from the image itself.
You can then save it to the alpha channel just like a selection.
------
I be thankin' you, sir . . .
. .
Y

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