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Unread 14-02-2012, 08:49
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Re: Simple Crosshair

Quote:
Originally Posted by Greg McKaskle View Post
The second approach is to add the lines into the image programmatically. Go to the diagram and find the loop near the top that Reads the MJPG and the next step it does is clear the overlays. Instead, you want to right click on the Clear and choose Replace Overlay and choose the Line function. Copy it and hook up another. Hook up the parameter values to describe the line endpoints and color.

To test it, stop the other dashboard EXE and run your VI using the run arrow. To build it into an EXE, you go to the bottom of the project window, open the Build Specifications, and right click and Build. The resulting dialog will tell you where the EXE was saved. Copy it to the Program Files/FRC Driver Station folder and you are good to go. The DS will launch yours next time it starts up.

Greg McKaskle

I did A similar technique last year.

what I did was I used the "draw rectangle" overlay block twice, one for each crosshair. I did it this way so I could adjust the thickness...

It also was linked to the tilt servo position so it would automatically rotate the image when the camera passed 90 degrees... it also changed the crosshairs to a set of parallel lines that could be used to line up with the minibot pole.
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