OpenCPN Radar Overlay PlugIn

[GHammond]

Dear Joel

That was really helpful - thank you.

I changed the source as you suggested and the screen did NOT draw red all over.

I then added another line of code inside the drawing code to make a log entry each time the radar tried to draw a blob to make sure that the drawing code was being called - and quickly generated a huge log which proved that the radar plugin was trying to draw blobs and they do not appear.

In other words, I did this:

                glColor4ub((GLubyte)red, (GLubyte)green, (GLubyte)blue, (GLubyte)alpha);    // red, blue, green
                wxLogMessage(wxT("Drawing blob right now"));
                draw_blob_gl(angleDeg, radius,  blobRadius, .75);

So...I think it must be an openGL phenomenon: it can't be just a 64 bit issue since you're running 64 bit so I'll concentrate on the openGL flags/switches/variables.

The only other anomaly I can see by comparing the logs from the working box with the non working is that the non working box always reports max_range as 0 -- like this:

10:48:51 SGT: Rotating image for HDT=0.000000 Correction=0 Rotation=0.000000 Result=0.000000
10:48:51 SGT: max_range=0 angle_prev=4095

Not sure if this is material.

If any one has any ideas I'm all ears...

Thank you Joel

Pete