[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [ProgSoc] Question for graphics people -- building animated PNG pictures
A java applet to animate it may be worth looking at. Don't know of any
pre-built ones around, but then I haven't really been looking. Some
ideas and code on writing one is at:
Telford Tendys wrote:
> I have a bunch of pictures in Ghostscript format which include colour and
> have a correct bounding box, etc...
> I want to convert them into PNG files so looking at the ``gs --help'' output
> I have the devices available that might relate to PNG:
> pngmono pnggray png16 png256 png16m
> There are also have a few JPEG devices but these pictures are plots with sharp edges
> and flat blocks of colour so JPEG would probably blur it beyond recognition so forget
> about JPEG for the time being.
> Now I don't have much problem with the concept of taking a single ghostscript
> picture and converting it over to png256 but what I really want to do is a bit
> more than that -- each of these files is a frame in an animation sequence so I
> need a method of building an animated system of frames in a PNG format.
> Frankly I don't care what web browsers can view it -- so long as SOMETHING can
> view it for me to look at -- because I sure as anything won't be putting any GIF
> files up on my web page.
> One further question, I want the sequence to run forward through all the frames,
> then stop and pause a bit, then run backward through all the frames. It seems a waste
> to include the same frame twice so can I tell the animation sequence that I
> want to reuse some of the frames in a different order? Does the PNG standard
> support a Markov chain to step between frames (not that I need that but it could
> be useful for other cases).
> - Tel
> You are subscribed to the progsoc mailing list. To unsubscribe, send a
> message containing "unsubscribe" to firstname.lastname@example.org.
> If you are having trouble, ask email@example.com for help.
> This list is archived at <http://www.progsoc.uts.edu.au/lists/progsoc/>
You can observe a lot just by watching. -- Yogi Berra
You are subscribed to the progsoc mailing list. To unsubscribe, send a
message containing "unsubscribe" to firstname.lastname@example.org.
If you are having trouble, ask email@example.com for help.
This list is archived at <http://www.progsoc.uts.edu.au/lists/progsoc/>