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GDI plus limits

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Empi

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Jun 22, 2009, 10:53:41 AM6/22/09
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Hi all and thanks.

I'm about to start a new project on which I suppose to draw a graph of 16
channels, each one with 360,000 :-O samples of 1 byte.
I have to support zoom in and zoom out, scrolling, timeline etc (much like
goldwave, but with 16 channels).
The good news are that the info is static.

I wonder. Is c# with GDI+ fast enough?

If not... what do you recommend?

Is there a third party dll for such elements?

Thnaks.

Empi.


Rüdiger Klaehn

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Jun 22, 2009, 6:24:48 PM6/22/09
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Use C++ and Direct2D (new 2D API for Vista and Windows 7) or OpenGL.
GDI+ is slow as hell, and WPF is even slower.

Horst Reichert

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Jun 23, 2009, 1:53:44 AM6/23/09
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You have to do some optimization before display as I do with Rt-Tools2D:
http://www.rt-science.com/tools2d.html

Might be worth a try ;)

Regards Horst

"Empi" <mpe...@softstart.co.il> schrieb im Newsbeitrag
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Empi

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Jun 23, 2009, 8:02:14 AM6/23/09
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Thanks.

Will give it a try.

I consider - knowing that i've got a static info - drawing it once on a huge
bitmap (16 colors) and manipulating it.
It looks faster than redrawing a range in my data.

I'll check rt-science as well.

Thank you very much.

Empi.


"Horst Reichert" <horst.r...@rt-science.de> wrote in message
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