image methods

image:draw( rect )

Draws the image to the window. The first two numbers stored in rect represent the x and y coordinates to draw to. rect can contain two more numbers, specifying the width and height to scale the image to

image:drawBackground( )

Draws the image, scaled to fit the size of the entire window

image:drawClip( dest, source )

Draws a section of the image into the window. source is an array containing the x coordinate, y coordinate, width and height to clip out of the image. dest is an array containing the x and y coordinates to draw the image to in the window. dest may also contain two more numbers specifying the width and height to scale the image to

image:getSize( )

Returns an array containing the width and height of the image

image:getAlpha( )

Returns a normalized number from 0.0 to 1.0 representing the alpha level of the image

image:setAlpha( alpha )

Sets the alpha level of the image. alpha is a normalized number from 0.0 to 1.0