There is no common calibration utility for DirectFB. If you're using touchscreens provided by one manufacturer or even single touchscreen, the best solution is to use hardcoded calibration values. You can try to modify it by hand to found correct values.
If touchscreens are different, or if you're using USB touchscreen via Linux Input driver, the best way is to calibrate it in your software. It's flexible and universal method. Two common calibration algorithms are described in next papers: http://www.embedded.com/story/OEG20020529S0046 http://www.elotouch.com/pdfs/manuals/program.pdf Tuesday 31 January 2006 17:44, Shaun Jackman You wrote: > Is there a touch screen calibration utility for DirectFB? The Liyitec > touch screen has a Linux input event driver, which puts out 10-bit > absolute X and Y coordinates in the range of 0-1023. Before > calibration, it uses a small rectangle somewhere in the middle of > these values, which needs to be calibrated to the screen coordinates. > > Thanks! > Shaun > > _______________________________________________ > directfb-dev mailing list > [email protected] > http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev > -- Ivan Daniluk, technical director, Profit Solution Software, Kiev, Ukraine. _______________________________________________ directfb-dev mailing list [email protected] http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
