Ben, thanks I'll look into this. Cheers, Werner
On Aug 12, 2012, at 1:26 PM, Ben Coman <[email protected]> wrote: > Since I am not familiar with BalloonMorph, I will answer generically, and how > I would go about learning it... > > One way to try to understand this, insert the line "self haltOnce." in front > of "corner :=" > then enable Halt Once (see [1] & [2]). The highlight and Inspect various > bits of the code and single-step through the debugger watching how it does > its stuff. > > The other main advantage of this as opposed to just trying to understand the > code from reading it, is that you get to see what calls this method and in > what context. > > [1] http://squeak.preeminent.org/tut2007/html/095.html > [2] http://marianopeck.wordpress.com/2012/05/19/pharo-tips-and-tricks/ > > cheers -ben > > Werner Gaisbauer wrote: >> >> Hello, >> >> I really like the BallonMorph of Squeak (aka tooltip) and would like to port >> it to another programming language. But I’m a newbie in Smalltalk and Squeak >> so I’m having a hard time understanding e.g. the getVertices method. As far >> as I understand this method creates the vertices of the polygon that is the >> speech bubble? >> >> It would really help me if someone could post this method in e.g. Java (my >> goal is to port BalloonMorph to Processing - see http://www.processing.org/) >> or give me some hints on how to read it. >> >> Here is the method: >> >> getVertices: bounds >> "Construct vertices for a balloon up and to left of anchor" >> >> | corners | >> corners := bounds corners atAll: #(1 4 3 2). >> ^ (Array >> with: corners first + (0 - bounds width // 2 @ 0) >> with: corners first + (0 - bounds width // 4 @ (bounds height >> // 2))) , corners >> >> Thanks for helping, >> >> Werner Gaisbauer >> >> >> _______________________________________________ >> Beginners mailing list >> [email protected] >> http://lists.squeakfoundation.org/mailman/listinfo/beginners >> > > _______________________________________________ > Beginners mailing list > [email protected] > http://lists.squeakfoundation.org/mailman/listinfo/beginners
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