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Posted

Hi,

I am new to uGFX. In my application, I need to rotate the wire or filled ellipse axes by a given angle. Is there a simple way to do this without delving into implementation details of the ellipse function?

Regards,

Renan

Posted

No. The ellipse is currently xy axis only for code size and complexity reasons.

You could estimate it with line segments and then use the matrix 2d rotation api and then gsispDrawPoly but that is just an elipse approximation.

Posted

Thank you all for your prompt responses. My intend was to display the error ellipse of a 2D covariance matrix. I understood that pressing on this will lead unnecessarily complex and possibly resource heavy floating point operations. So, I will take a different approach to represent this information on the display.

Regards. 

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