Writing Extensions

Ali Lloyd ali.lloyd at livecode.com
Wed May 17 09:09:59 CEST 2017


Mark, it would be lovely if you could be more specific. What parts of the
docs in particular could be improved and how? What specific sticking points
did you have?

Could you file a bug report about the extension builder? It may be that
something about error reporting has changed that hasn't been updated in the
extension builder.

On Wed, 17 May 2017 at 03:37, William Prothero via use-livecode <
use-livecode at lists.runrev.com> wrote:

> Herman:
> Your doAsJavascript suggestion is very cool. I might use it and might
> learn some javascript in order to use it.
>
> Great idea!
> Bill
>
> > On May 16, 2017, at 4:02 PM, hh via use-livecode <
> use-livecode at lists.runrev.com> wrote:
> >
> >>> Alejandro T. wrote:
> >>> How fast is LCB working with imagedata?
> >
> > Slower than slowest LC Script ever seen. I Stopped
> > all my experiments with imagedata after one full day
> > (was 12 hours).
> > For a first own test simply take an image of screensize
> > and walk through the pixeldata for each byte applying
> > only the identity mapping ...
> > We have to wait until the java FFI is comfortable enough
> > to use a java image library. (I couldn't get to there).
> >
> > Would be great, if not too difficult to realise, to have
> > a "do as javascript" here (which uses the js engine only
> > of the browser widget). This is at least ten times faster
> > with imagedata than fastest LC Script. See several recent
> > examples in "Sample stacks" (and some more links in the
> > Raspi-Subforum to extern servers).
> >
> >>> Alejandro T. wrote:
> >>> How fast is LCB working with transform matrices?
> >
> > Pretty fast and comfortable for transforming all 'small'
> > canvas data (pathes, text, pattern, image-as-a-whole).
> > I liked that after taking the first hurdles.
> >
> > You may test yourself with snippets or lcb files from the
> > LCB-subforum. There is a lot of stuff for starting there.
> > Or use the examples on github by Trevor DeVore or the ones
> > by the LC-stuff, variants by BerndN.
> >
> > But I wait for my next examples until there is a stable
> > widget format (we have meanwhile three formats that work on
> > some LC versions only, not on the others).
> > To adjust these costs too much time, simply recompiling
> > worked here only in 1 of 20 cases.
> >
> >
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