Re: Simple Crosshair
 

i would like to use the drawrect function, but i am unsure where it is. i found a drawrect int value under constants for squawk, but i am not sure how it helps.

Re: Simple Crosshair
 

I'm feeling really stupid, but where do I find the option to draw the rectangles. I have the Dashboard Main.vi Front Panel open, and I right-click in an open area and i get a Controls pop-up, but I don't see any drawing tools there or anywhere else.
I haven't used Labview at all - but we'd really like crosshairs!
Thanks for any help you may be able to give me.
Dale

Re: Simple Crosshair
 

If you are on the panel, you will find the rectangle and lines in the decoration palette. If you are running on a pretty fast computer, this will be fine, but a more efficient method is available if programmed on the diagram. Give the decoration a try and post again if this isn't fast enough.

Greg Mckaskle

Re: Simple Crosshair
 

Hi Greg,
The problem is that I don't see anything called a decoration pallette. The closest thing I found was under Vision, Machine Controls, IMAQ Rectangle. But when I added that it just gave me a box where I could enter a start and end coordinates. I didn't see how I could just draw a box, or show the box that I specified by coordinates.
Remember that this is literally the first time I opened Labview. :-)
You mentioned a speed issue too. Is the "decoration" applied to each frame of the video feed? We'll be running this on the standard Classmate, so that could be an issue.
If I can't get this to work, there is always the rubber bands around the screen option.
Thanks for the time you give to all of us!
Dale

Re: Simple Crosshair
 

In the upper right of the palette is a search button. Try searching for decoration or rectangle.

Greg Mckaskle

Re: Simple Crosshair
 

Ok, I got it now by searching for decoration - thanks!
My only remaining issue is that I'm having trouble keeping the lines in front of the image. In the designed I chose the option to move the line to the front - and it stays for a second and goes behind the image. I have it sticking out above the image area, so I can still see it there - so it's actually workable this way.
Thanks for the help.
Dale