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

[Boo]

[Johan]

[DillRye]

[Johan]

[DillRye]

[BooRad]

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.

[BooRad]

[tedson]

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?

[thevicar]

[DillRye]

I believe just the normal Blt function has what your lookin for.......

[Johan]

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...

/Johan