rotating texture

Blitz3D Forums/Blitz3D Programming/rotating texture

Neochrome (Posted 2005) [#1]

i have a problem, i have texture and drawn a oval inside it with a virtical line, i created a sprite and added the texture onto the sprite. now rotating the sprite like this has the effect im after, BUT i need it for the texture when i rotate the texture it does not rotate "from the middle" does anyone know how to achieve this? my maths isn't very good and cos, and sins i know are part of it... please help

Neochrome (Posted 2005) [#2]

im still stuck! please... help

DJWoodgate (Posted 2005) [#3]

Sigh... http://www.blitzbasic.co.nz/codearcs/codearcs.php?code=420

Neochrome (Posted 2005) [#4]

AHH! i missed out the coordinates!! irot = (irot +1) Mod 360 RotateTexture itex,irot u# = Cos(irot) / 2 v# = Sin(irot) / 2 PositionTexture itex,(u-.5),(v-.5) you can see what was missing!! haha Thanks DJWoodgate!