Smooth Image Animations in Vb.net - Bitblt? DirectX, OpenGl?

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Hello-

I have a program that draws a dozen thumbnail images on a full screen double buffered picturebox. It uses drawimage on the pb. Then, when the user clicks on one of the images (collision detection), that image will animate to full size. I am also moving some text, and drawing another image, etc. etc... Well, it stutters horribly. I am using a timer to change the heights, widths and locations of the images and the text.

Basically, I understand that gdi+ DrawImage() is just too slow to draw that, resize it, and draw it again (at 20fps+.) So, how do I fix it?

DirectX - REALLY complicated
OpenGl - Possibly?
Or direct bitblt'ing? Can't find much on this with VB.net. Anyone have any examples or areas to look at? I am using vb.net 2008.

Opinions? Please for the love of god help! :) I have looked everywhere for this solution.

Thanks,

Josh

Posted 29-Dec-10 20:47pm

JBenhart

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Espen Harlinn · Answer 1 · 2010-12-30T00:03:00

Fast gdi animation:
http://www.daniweb.com/code/snippet241875.html[^]

If that doesn't help you can try to create a wpf UserControl and use System.Windows.Forms.Integration.ElementHost to integrate that with your forms application. Slide.Show[^] could be used as a starting point

If you want to use OpenGL or DirectX, take a look at mogre[^]

regards
Espen Harlinn

JBenhart · Answer 2 · 2010-12-30T09:57:00

Thank you for your response. Well, with a lot of debugging and head scratching, it looks like drawimage will actually suffice just fine. During the animation, I had a mouse move event that would fire on mouse move. It handled the collision detection and wasn't necessary during the animation (which really slowed everything down.) So, I just created a conditional in the mouse move, click and wheel (if timer.enabled) and it works great! In fact, I ran it at 100 fps and didn't have any stuttering what so ever.

Thanks for the info though! I have another animation in which it will come in handy!

-Josh

Smooth Image Animations in Vb.net - Bitblt? DirectX, OpenGl?

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