Not to sound super-demanding, but I must say that a LOT of people use Paint
Shop Pro, so you might want to consider changing it to that format.

This program looks cool, btw :)

-Ian

Andrew Woodfin <adw### [at] unccedu> wrote in message
news:3727499B.FD41BA87@uncc.edu...
>     The short answer to Ken's question re: the coordinate system assumed
by my
> utility is no, it assumes left-handed standard POV.
>     The long answer, also as a clarification of Magnus' remark, is this
depends
> on the software you use to create your TGA. I usually run mine through
Lview
> Pro to create the TGA, and this yields top-to-bottom ordering, with the
first
> pixel going to the top left corner. I've noticed the same "upside-downing"
with
> files created by some paint programs (e.g., PaintShop Pro), where the
image
> data is oriented so that the first pixel goes to the bottom left corner. I
had
> actually forgotten about this since I last encountered it, since all my
images
> are top-bottom. I don't work with a wide variety of paint programs, at
least
> not for creating TGA, so I don't know what is the most common pixel
ordering,
> but both are indeed equally valid under the TGA specification. I'll try
working
> a section into my code to discriminate between the different orderings so
you
> won't have to flip images before sending them through, this shouldn't be
too
> difficult.
>     Just as a technical note: if you look at your 24-bit uncompressed
(type 2)
> TGA in a hex editor, the 18th byte will show the pixel ordering. Decimal
32
> (hex 20) denotes first pixel goes to top-left corner, while decimal 0
denotes
> first pixel goes to bottom-left corner. The TGA specification actually
supports
> the image origin being in any corner, and the original motivation behind
this
> escapes me at the moment.
>
> Andy
>
> Margus Ramst wrote:
>
> > I'd say this is because the image file is read from top to bottom. Top
left
> > pixel of the image is in the bottom left of the TGA and BMP files.
> >
> > Margus
> >
> > Ken wrote in message <372### [at] pacbellnet>...
> > >
> > >  There seems to be a minor bug in the default output of your utility.
> > >To get the image to "read right" that is to say to have it oriented
> > >as expected using the default camera that is provided the input image
> > >must be flipped or it is incorrect. The two examples below illustrate
> > >what I am referring to. If I don't flip the image in a paint program
> > >then the rendered image appears inverted on screen.
> > >
> > >  Out of curiosity do you have an ini file or something set up so that
> > >for your setup of pov it will use a right hand coordinate system
> > >instead of Pov default left handed system. This might to some degree
> > >explain the bassackwardness of the in vs out.
> > >
> > >--
> > >Ken Tyler
> > >
> > >mailto://tylereng@pacbell.net
>
>
>
> --
>
> --------------------
> "There are three men in a boat with four cigarettes but no matches.
> How do they smoke??"
>   -The Riddler
>
> Andrew Woodfin
> UNC Charlotte Center for Precision Metrology
> adw### [at] unccedu | http://www.coe.uncc.edu/~adwoodfi
> --------------------
>
>

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