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Originally Posted by Mav87th
Rely good idea making a real sextant to put on the screen.
I think ill use a transparrent sheet and mark on that one. That can be lined up all along the buttom of the screen and up along one side giving high precision for all placements.
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This is how I did the original. Once you have that you use the ratios to mark off the scale on the image.
Say from..
1) 0-10 = 30mm
10-20 = 28mm
20-30 = 25mm
.
.
80-90 = 25mm
You totalise the mm (say 300)
your vertical resolution is 1024
0-10 scale will be marked at
(30/300) x 1024 = 102.4 pixels high
So
10 marker is at 102(103)
Now the
unit scales 1,2,3,...8,9 will be marked off at every
102.4/10 = 10.24 pixels
and so on up the scale..
I'll post a picture on this, as well, later.
