DSP Robotics Support

trying to rotate a bitmap of a compass card around its own centre.

Any pointers would be appreciated!

might have sorted some of it but i need to calculate the centre of the plotted bitmap. If the gui display is resized then the centre of rotation moves and things go wrong.

I have attached a copy of my display but not sure if that encapsulates the bitmaps??

It should display this




Can I just add how blown away I am at this! What a cracking piece of software! The manuals could do with a bit of work, working out where to put things like the redraw of a bitmap is mostly trial and error but 2 days ago I had not heard of Flowstone and in one evening I produced a working compass display, got a feed from a com port going, filtered out a csv stream and can control my display from a piece of hardware.

Excellent! I'll certainly be spreading the word to some of the user groups I am in!

Looks good!

To optimize the redrawing a bit you can change the Redraw primitive to a Redraw Area to make the redraw area as small as possible. Also using a Float Changed can reduce triggers when triggers are sent without changing value.

Well done.

I have to say that's one of the best looking graphic bitmaps I've seen on these forums.

good work on the compass
used this with the phidgets 3/3/3 for spatial info for my Land Rover

does anyone know how to use the 3 axis compass readings to allow pitch and roll compensation?

Depends what it is your controlling. But it will involve using the PID module to give nice progressive results.

At the mo I am using the yaw for compass heading for testing but I would like to use the compass data