Great work. You make very approachable projects. Always fun to watch.
Karl On Mon, Jun 11, 2012 at 2:43 PM, Steve Thomas <[email protected]> wrote: > Thanks Bert. > > On Mon, Jun 11, 2012 at 6:02 AM, Bert Freudenberg <[email protected]> > wrote: >> >> >> On 2012-06-11, at 05:57, Steve Thomas wrote: >> >> Folks, >> >> I created a video of a code walk through for my students. It's an >> algorithm to create a "Green Screen" effect in Etoys. >> As I am definitely a novice when it comes to Squeak, I would appreciate >> any feedback on how I can correct/improve the explanations. >> >> Here is a link to the video of the code walk through and the introduction >> video to wet the kids appetitie. >> >> >> >> Awesome walkthrough! >> >> Nit picks: >> >> * pages 8 and 10: when you explain iterating over y, the example code on >> the right should use height, not width ;) >> >> * page 14: 0@0 in Squeak generally denotes the top-left, with increasing y >> values going down. Only Etoys pretends to use a proper Cartesian coordinate >> system with y going up, and the origin in the lower left (or center, >> depending on your playfield's settings). So the image code actually goes >> through the pixels from top to bottom, whereas you show it going from bottom >> to top. >> >> Also, for others to replicate your coding, you may have to briefly show >> how to make a textual Etoys script. >> >> - Bert - >> >> >> >> _______________________________________________ >> Beginners mailing list >> [email protected] >> http://lists.squeakfoundation.org/mailman/listinfo/beginners >> > > > _______________________________________________ > Beginners mailing list > [email protected] > http://lists.squeakfoundation.org/mailman/listinfo/beginners > _______________________________________________ Beginners mailing list [email protected] http://lists.squeakfoundation.org/mailman/listinfo/beginners
