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[John Henckel <question255516@xxxxxxxxxxxxxxxxxxxxx>]

New question #255516 on Sikuli:
https://answers.launchpad.net/sikuli/+question/255516

I'm trying to determine the refresh rate of an animation so I need to test when the region changes. I wrote this code in Java to measure how frequently the screen is changing.

Region reg = new Region(500,500,10,10);   // small region of the screen
reg.waitVanish(Screen.getPrimaryScreen().capture(reg), 10);

But this crashes with below. 

[error] Region: doFind: invalid parameter: org.sikuli.script.ScreenImage@dc67e
[error] ***** Terminating SikuliX after a fatal error 999 *****
It makes no sense to continue!
If you do not have any idea about the error cause or solution, run again
with a Debug level of 3. You might paste the output to the Q&A board.

I set debug=3, but it didn't show anything else. I changed the code to be

reg.waitVanish(new Pattern(Screen.getPrimaryScreen().capture(reg).getFile()), 10);

and this WORKS! but it is very slow, because of writing disk files.


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