Hi folks, So i've moved forward a little with Tkinter, & had a play & hack around with some example canvas drawing code from the example directory today.
I posted a few weeks back about a creating a "function" drawing tool, but I'm looking now to represent a number of "freehand functions" on the canvas at the same time. Drawing on the canvas is relatively easy. The problem is I want to restrict my line to a "function" representation (in the mathematical sense) IE, as I draw relative to the canvas X axis, there should only ever be 1 & only one y value displayed against that particular X (for each function line anyway) to say this another way, i want to write lists / arrays of Y values to X indices as defined via the mouse, & then display the contents of these lists on the canvas, all together, but each array / list represented by a different colour line /squiggle once I am happy with my superimposed graph of trajectories, i would hit some sort of publish button, & the output of the function arrays / lists would be published to .txt file so i can go off & use the data in Csound. That's the easy bit ; ) Im not sure this is possible with tkinter, although in theory it should be pretty simple. The best i can think of involves maybe using 1 pixel diameter circles on the canvas or something.. the canvas.line() method after all does some smoothing & interpolation on the mouse input data... in a way it would be nice if my "trajectories" in the array reflected the discrete mapping from this "post smoothing" state... I'm aware that a greater "hybridisation" of input & plotting functionality might be available through some sort of wxPython / matplotlib combo ... essentially i am, after all, "plotting" data - it's just the data I am inputting is arbitrary / via the mouse - & the display needs to refresh after input I want to be sure however that I can't achieve this in Tkinter first before i go off trying more complex tools or environments. cheers T. ----- ******************* www.phasetransitions.net hermetic music * python * csound * possibly mindless ranting various werk in perpetual delusions of progress.... -- View this message in context: http://www.nabble.com/drawing-multiple-functions-on-the-canvas-tp16064458p16064458.html Sent from the Python - tkinter-discuss mailing list archive at Nabble.com. _______________________________________________ Tkinter-discuss mailing list Tkinter-discuss@python.org http://mail.python.org/mailman/listinfo/tkinter-discuss
