john@newave.UUCP (John A. Weeks III) (02/28/91)
I have an array of data that represents a screen bitmap from a non-Mac system. I want to display this data in a Mac window. In looking through the QuickDraw sections of the Mac programming books, I find all kinds of procedures to draw lines, squares, circles, etc, but no procedure to draw a single point (pixel). How do you plot a point in QuickDraw? I worked around this by plotting lines of length 1, but this seems like it would carry extra overhead (I could have also used squares of size 1 x 1). -john- -- =============================================================================== John A. Weeks III (612) 942-6969 john@newave.mn.org NeWave Communications ...uunet!rosevax!tcnet!wd0gol!newave!john ===============================================================================
pepke@gw.scri.fsu.edu (Eric Pepke) (02/28/91)
A much better way to do this would be to transform the data into an offscreen bitmap internally and then copy it to the screen with a single CopyBits. The last time the single pixel question came up, the consensus seemed to be that the fastest way to do it was with a CopyBits of a rectangle containing a single black pixel. Eric Pepke INTERNET: pepke@gw.scri.fsu.edu Supercomputer Computations Research Institute MFENET: pepke@fsu Florida State University SPAN: scri::pepke Tallahassee, FL 32306-4052 BITNET: pepke@fsu Disclaimer: My employers seldom even LISTEN to my opinions. Meta-disclaimer: Any society that needs disclaimers has too many lawyers.
Lawson.English@p88.f15.n300.z1.fidonet.org (Lawson English) (03/02/91)
Eric Pepke writes in a message to All
EP> The last time the single pixel question came up, the consensus
EP> seemed to be that the fastest way to do it was with a CopyBits
EP> of a rectangle containing a single black pixel.
No doubt with NGetTrapUsed prior to the first call to CopyBIts...
Lawson
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