Any thoughts on speed limitations of Revlet?

[Sarah Reichelt]

On Sun, Jul 26, 2009 at 1:48 AM, James Hurley<jhurley0305 at sbcglobal.net> wrote:
>
>>> > P.S. The stack I tried was "RainbowTest.rev" and if you are interested
>>> > you  can see it in action by running the line below in the message box. And
>>> > if  you have Rev 4.0 you can create your own test by saving it for the web.
>>>  go url "http://www.jamesphurley.com/RainbowTest.rev"
>>>  Not only does the "mouseMove" handler run lethargically, but the image
>>> (a  flashlight, or up in Scotland, a torch) carrying that script breaks up
>>> on  the screen, i.e. the image breaks up into two separate parts. Odd.
>>
>>  I tested your stack Jim. It was very interesting as it worked at full
>> speed when running in the browser but from the files on my desktop. When I
>> uploaded the revlet & it's html file to my web server
>> <http://troz.on-rev.com/rainbow/test.html>, it ran as described.
>> Interestingly, the "Draw bunches" script runs fine, it seems to be dragging
>> the torch around that causes the delay. This may be an optimization thing
>> that will be improved as the plugin develops, or it may be that mouseMoves
>> need to be handled differently.
>>  Cheers, Sarah
>
> Thanks Sarah. Your feed back was very helpful. I confess that when I ran the
> stack I posted to you I got the same results you did--and not the same as I
> obtained earlier when I ran the full stack from which I extracted the bit I
> posted.
>
> Just to isolate the  issue of the graphic display, I tried a very simple
> stack: A single image (my barn last winter) with a MouseMove handler.
>
> go url "http://www.jamesphurley.com/MoveGraphicTest.rev"
>
> When I drag this image around the screen (running in Safari from the file on
> my desktop) I found the motion to be rather bumpy, not nearly as smooth as
> when running in desktop RunRev. It is tolerable, but bumpy. As you say, this
> may be something that needs tweaking as the plug in evolves.
>
> I haven't tried uploading it to the my web server. Not sure how to proceed
> to the next step. The url in Safari looks like this:
>
> file:///Rev%20apps%20on%20web/Untitled%201/test.html
>
> I never have figured out what character the  %20 is a substitution for.
> Little help? How would I proceed from this Safari rendition to posting it to
> my on-rev web site for a test?
>

I built your image moving stack and uploaded it to
<http://troz.on-rev.com/rainbow/move.html>.
It seems to work at full speed, so it isn't the mouseMove itself, but
the amount of processing that has to happen on every mouseMove.
I tried several options: locking the screen, only drawing the lines if
the torch has moved more than a certain number of pixels, limiting the
number of redraws per second, flushing events. I even tried replacing
the torch image with a button in case redrawing the image was too
much.
I think I made it a bit better, but it's still not great, but you can
try it again at the same address.

As regards the odd URL, in the standalone settings, I recommend
entering a name for the revlet with no spaces or other odd characters.
When you build the revlet, you get 2 files: the revlet file and a
test.html file. Rename the test.html file if you want and then upload
them both into the same folder of your on-rev site. Then the web
address will be: http://yourname.on-rev.com/foldername/test.html
(filling in the blanks as appropriate).

Cheers,
Sarah