Thanks, Slava! Putting the variable into the gadget as a slot seems to be working fine. Since the word where I use the getter is declared as : pyramids-scene ( gadget -- ) ... it was no need for find-parent, I just did "dup pyr-rot>> ..."
I must do some more work on it before I have the "animation" going. /Jon > Hi Jon, > > Factor's namespaces vocabulary implements dynamically-scoped > variables. This means if you set a variable in the scope of the code > calling open-window, your draw-gadget* and other callbacks won't be > able to see that variable since that code runs in a different scope > (and indeed, in a different thread). > > There are several ways to share state between gadgets: > > - Put it all in slots of a parent gadgets (that will subclass track, > pack, frame, or similar). Have the children use find-parent to find > the parent. Eg, [ foo-gadget? ] find-parent tidbit>> > - Use local variables and lexical scope to bake your values into > closures, storing the closure in a button's callback quotation or > something. Look at "locals" about > - Use global variables. I don't recommend this for obvious reasons. > > Slava > > On Thu, Apr 9, 2009 at 4:26 AM, Jon Kleiser <jon.klei...@usit.uio.no> > wrote: >> Hi, >> >> In my little OpenGL "pyramids" project I want to make use of a variable >> holding an angle value that represents the current degree of folding. >> I've >> tried to use the "vars" vocabulary, but when I do things like "VAR: >> pyr-rot 32.0 >pyr-rot" in the upper part of my program, the word >> pyr-rot> >> don't seem to give me anything (but f) where I need the value, in my >> pyramids-scene word. There must be something about scope here that I >> don't >> understand. Can somebody give me a clue? >> >> My little project, which is to a high degree based on Joe Groff's >> "spheres" code, can be found here: >> <https://vortex.uio.no/brukere/jkleiser/factor/> >> >> /Jon ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ Factor-talk mailing list Factor-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/factor-talk
