Rotating 90 degrees

Is it possible to rotate image by 90 degrees without using GetPixel and SetPixel?

Well there's DirectX ;)

VB4, can't use DX.

:eek:

UPGRADE!

Use BitBlt for every pixel :p

Use stretchblt, you can use negative numbers for width/height to rotate it 90º ;)

Wouldn't that just mirror and flip the picture?

Use c++, loop trough all pixels
counter clockwise

newX=-oldY;
newY=oldX;

clockwise

newX=oldY;
newY=-newX;

PsychoMark, thanks for the BilBlt pixel-by-pixel idea. It really works faster than GetPixel/SetPixel, atleast my game loads much faster now :)

Wow, never though it would actually work faster. Thanks for letting me know too... :)

Maybe it has something to do with the number of API calls. Like, with GetPixel & SetPixel you need more VB code in the middle. You never know for sure.