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PocketMatrix • View topic - How do I clip a bitmap to only display the part on-screen?
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How do I clip a bitmap to only display the part on-screen?


How do I clip a bitmap to only display the part on-screen?

Postby Boo » Aug 3, 2002 @ 1:51am

Boo
 


Postby Johan » Aug 3, 2002 @ 4:40am

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Postby DillRye » Aug 4, 2002 @ 9:38am

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Postby Johan » Aug 5, 2002 @ 5:32pm

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Postby DillRye » Aug 5, 2002 @ 6:39pm

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Postby BooRad » Aug 6, 2002 @ 5:40am

Thanks for the advise and code DillRye and sbl. I'm making an asteroids-type scrolling game and just kind of hit a mental block. 8O
Make it idiot proof and someone will make a better idiot.
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Postby BooRad » Aug 11, 2002 @ 2:44am

Make it idiot proof and someone will make a better idiot.
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What about rotation

Postby tedson » Aug 21, 2002 @ 11:09pm

I was using almost the exact code above to clip my sprites but the problem I am running in to now is I am rotating the sprites by setting a rotation angle and passing GDBLT_ROTATIONANGLE to Blt. The problem is the width and height of the sprite are now different. Anyone know a good way around this one?
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this looks like a time for a FEATURE REQUEST

Postby thevicar » Aug 29, 2002 @ 12:54am

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Postby DillRye » Aug 29, 2002 @ 8:42pm

I believe just the normal Blt function has what your lookin for.......
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Postby Johan » Aug 29, 2002 @ 8:49pm

Yep...


And the next version of GapiDraw will also support a variable pivot point on the target surface with automatic clipping (so if you want to rotate a sprite and place it in the corner you no longer need to Blt with rotate to a temp surface and then copy/clip the result to the correct location).

I will announce a betaprogram of 1.1 next month...

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