[Etoys] alpha property

Karl Ramberg karlramberg at gmail.com
Thu Apr 23 12:46:21 EDT 2009

On 2009-04-23 13:24, Bert Freudenberg wrote:
> On 23.04.2009, at 09:41, Angel Arias wrote:
>> i'd like to have different images in a project and change their alpha
>> property dynamically using scripts.
>> since i can't find the color category of an image in the viewer i
>> don't know how to access its alpha property.
> Using Etoys tiles you can only hide and show an image completely, not
> adjust its transparency.
> - Bert -

You can do image adjustments in a very slow way using a turtle to read 
each pixel and adjust the color and draw it another place :-)
I did a project that does that here:

To add alpha channel would not be hard, but this project is more prof of 
concept and  it is slllllooooowwww


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