Card SnapShot from Negative Rect?

Earthednet-wp prothero at earthednet.org
Mon Jun 6 22:35:25 CEST 2016


Scott,
The important thing to recognize is that if you specify the rect in the snapshot command, you are essentially getting the data from the screenshot, but if you take a snapshot from a group, you get the data before it goes to the screen, where it exists in memory. 

I had a situation where a user was getting an extremely pixelated image from a screen snapshot. Putting the desired region on a group and using the syntax BNig suggests eliminates the possibility of this happening.

Best,
Bill

William Prothero
http://es.earthednet.org

> On Jun 6, 2016, at 12:42 PM, BNig <bernd.niggemann at uni-wh.de> wrote:
> 
> Hi Scott,
> 
> what happens if you reference the object directly:
> 
> on mouseUp
>   export snapshot from field 1 of group 1 to tImg as png
>   set the text of image 1 to tImg
>   put the rect of field 1 of group 1
> end mouseUp
> 
> or 
> 
> on mouseUp
>   import snapshot from field 1 of group 1 
>   put the rect of field 1 of group 1
> end mouseUp
> 
> the rect of field 1 being 327,-125,577,-69
> 
> both work for me in LC 7.1.4. Both retain transparency.
> 
> Kind regards
> Bernd
> 
> 
> Scott Rossi wrote
>> Anyone know how to snapshot a rect location of a card that includes
>> negative values?
>> 
>> In LC 7.1.3, I have an object in a group that's scrolled out of view,
>> resulting in the object's rect having negative values.  I want to snapshot
>> the object, but I'm unable to snapshot any part of the card outside the
>> card's rect (where the rect contains values less than zero).  I know it's
>> possible to snapshot an offscreen stack, but can't seem to do this with an
>> offscreen object on a card.
>> 
>> Any option for this besides locking the screen and moving the object to a
>> visible location?
>> 
>> Thanks,
>> 
>> Scott Rossi
> 
> 
> 
> 
> 
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