Snapshot command and non-rect polygon selections?

Scott Rossi scott at tactilemedia.com
Wed Jun 29 15:23:35 CDT 2011


John, I don't think you can automatically do what you're asking -- a
snapshot always "grabs" from a rectangle.

You either need to do as Andre suggests, or you have to define the L region
yourself, and mask it out of the snapshot image.  You can do this using a
combination of ink effects, or by artificially applying alpha transparency
to the snapshot.  There are probably a few other ways as well.

Here's an example of masking using ink effects:
 go url "http://tactilemedia.com/site_files/downloads/masking_options.rev"

Here's an example of applying alpha transparency to one image using the
imageData of another image:
 go url "http://tactilemedia.com/site_files/downloads/get_alpha.rev"

Hope this helps.

Regards,

Scott Rossi
Creative Director
Tactile Media, UX Design




Recently, John Patten wrote:

> Hi Andre...
> 
> The issue is the "L" shape is inside a larger image. So essentially I
> only want a part of the image and the part I want is in the shape of
> the letter L.
> 
> Thanks!
> 
> John Patten
> SUSD
> 
> On Jun 29, 2011, at 12:24 PM, Andre Garzia wrote:
> 
>> John
>> 
>> export snapshot from graphic "L" to file "l.png" as PNG
>> 
>> will do as you want. No need for coords, just pass the object
>> reference.
>> 
>> best
>> andre
>> 
>> On Wed, Jun 29, 2011 at 3:48 PM, John Patten <johnpatten at mac.com>
>> wrote:
>> 
>>> Hi All!
>>> 
>>> Is it possible to to use non rectangular shapes when creating
>>> snapshots?
>>> 
>>> What if I had capture shape like the capital letter "L"  ...  could I
>>> create a snapshot out of the outline of the letter L? (That's just an
>>> example...)
>>> 
>>> As I understand it, snapshot only works with four coordinates, the
>>> points
>>> of a rect... or can they work with any group of points on a polygon?
>>> 
>>> Thanks in advance!
>>> 
>>> John Patten
>>> SUSD
>>> 
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>> 
>> 
>> 
>> -- 
>> http://www.andregarzia.com All We Do Is Code.
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