Suggest a means to handle resolution variation in graphic applications

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I am starting a mini-project in c# which simulates a moving LED display.
I would like some suggestion on how to handle the resolution across various systems.

When the application runs under different resolutions the form size changes and hence the drawing position also changes.

As i am new to graphics programming and moderate knowledge of c#,
i would really appreciate any suggestions.

Posted 21-Sep-10 19:48pm

HW_Programmer

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E.F. Nijboer · Answer 1 · 2010-09-21T21:57:00

The most important issue is to use floating point numbers internally and apply rounding just before drawing. Internally you can then scale very easily by multiplying with some calculated screen ratio. If you created your application for 800x600 and now running on 1920x1080 you would do:

horizontal multiplier = (1920 / 800) = 2.4
vertical multiplier = (1080 / 600) = 1,8

When you multiply every value on the x axis by 2.4 and every value on the y axis by 1.8 you scale to the new resolution. You can simply check this by simply assume you draw from (0,0) to (800,600) and when multiplying both you will get (0,0) to (1920, 1080).

As mentioned you need to separate internal calculation and drawing and thats it. You can the also easily apply other kind of effects rather easy, like rotation for example.

Good luck!

HW_Programmer · Answer 2 · 2010-09-25T18:52:00

Solution 2

I tried ur suggestion and it worked ok.I created 2 scale factors then
applied it to all the elements including graphics and controls.
Thanks, it really helped.

Posted 25-Sep-10 18:52pm