Good day, For the last few days I've been working on my own "2D Scatter Plot View" all is going great and it looks nice:
http://i729.photobucket.com/albums/ww297/karolisr/Screenshot2009-10-27at12636AM.png At this point I started optimizing drawing, so I implemented some cacheing, etc. and I see significant performance gains. Now my attention is on drawing multiple series as can be seen in the picture above. I decided that this is a great place to introduce some multithreading (note that I have never done any multithreading until two days ago). I've been reading documentation and this is what I came up with: 1. For each series create an operation using NSInvocationOperation 2. The operation consists of: - looping through the points in the series and creating an NSBezierPath - creating NSBitmapImageRep - creating NSGraphicsContext with that NSBitmapImageRep - stroking the path onto that Bitmap - adding Bitmap to an array 3. In the queue I wait until all the operations are finished and then proceed to loop over all Bitmaps and drawing them I will post detailed code in reply to this post soon (original message was too big and required approval). My questions are: 1. Is this a correct approach? 2. How do I measure (using instruments, I guess) the performance gain, if any? Thanks to everyone, Karolis _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
