Re: [racket] newb: implementation of select items

2015-01-24 Thread Chia Kang Ren
I have been working on and off on this graphical editor, and i seem to come across a recurring problem that my initial ideas for the program design weren’t sound, and i have to go back one or two things. This affects the rest of the system and forces me to modify a lot other functions. One examp

Re: [racket] newb: implementation of select items

2014-12-22 Thread Robby Findler
I'm not seeing laggy behavior when I run your code, but I do see that you're refreshing the entire window on each mouse movement event. Probably you want to make sure that the event isn't a movement even before calling refresh-now. Also, you might want to call refresh instead of refresh-now. Robby

Re: [racket] newb: implementation of select items

2014-12-22 Thread Neil Van Dyke
I think you have some of the right ideas. Two additional ideas to consider... * Usually you will have some data representation of objects that will be drawn and manipulated. This might be as simple as a list of structs or Racket objects, and (in an OOPL way). If you're making a simple graph