Re: Animating a flickering display

2011-07-06 Thread Scott Steinman
Thanks for the help. I don't know Quartz Composer yet, but I'll take a look at the documentation and see if it fits my needs for the current program. I've been mulling it over, and may create a git branch to try Core Animation. First, it may facilitate future alternative animated displays such

Re: Animating a flickering display

2011-07-06 Thread douglas welton
Have you looked at using Quartz Composer as a solution to accomplish this? On Jul 4, 2011, at 2:31 PM, Dr. Scott Steinman wrote: > My program needs to display counterphase flickering test, i.e., one display > is white text on a black background, and the other is black text on a white > backgrou

Re: Animating a flickering display

2011-07-04 Thread Dr. Scott Steinman
The purpose of the program is to compare the visibility of the text when it is static versus when it flickers (so in some ways it's similar to signage). Therefore, I must make the text display switch back and forth between two displays with opposite black/white contrast to produce the flicker -

Re: Animating a flickering display

2011-07-04 Thread Kyle Sluder
On Mon, Jul 4, 2011 at 11:31 AM, Dr. Scott Steinman wrote: > My program needs to display counterphase flickering test, i.e., one display > is white text on a black background, and the other is black text on a white > background, and the two displays are switched back and forth. I have > conclud

Re: Animating a flickering display

2011-07-04 Thread Jens Alfke
On Jul 4, 2011, at 11:31 AM, Dr. Scott Steinman wrote: > I have concluded that there are two options to do this: > > 1. Draw each display into two NSViews, then switch back and forth between > between them (via replaceSubview:with:) with an NSTimer to time the switches. > 2. Use Core Animation