how "angle" in Sprite Class work?

[Lukas]

any change in angle will rewrite pixel of bitmap ? 
Can someone show/tell me the code used in the Sprite Class

thanks, sorry for my bad English. 

[Blizzard]

The Bitmap stays unchanged. Bitmap represents the image data while Sprite contains data about how Bitmap should be rendered. "angle" is a property of the Sprite class. It can be used like this:

sprite = Sprite.new
sprite.bitmap = Bitmap.new(64, 64) # or any bitmap in existence
sprite.angle = 30

[Lukas]

yeah, i know that.

i mean..

def angle=(value)
blablaabla
end

I want to know the contents(blablaabla) of "angle" method . 

sorry for my bad english 

[Blizzard]

They are implemented in C and are not accessible. I expect that it's a simple assigner of a variable that is then internally used for rotation during rendering.

[Lukas]

oww 
uhm.. thanks Blizzard.   
good luck ARC