I represent a simple 2D texture.

Instance variables:
wrap <Boolean> If true, wrap the texture - otherwise clamp it.
interpolate <Boolean> If true, interpolate the pixels of the texture.
envMode <Integer> How we combine colors with the texture.
Possible values:
0 - OpenGL style modulate texture
1 - OpenGL style decal texture

	converting
	asTexture

	flipping
	flipVertically

	accessing	top
	contentsOfArea: Return a new form which derives from the portion of the original form delineated by aRect.
	envMode
	envMode:
	interpolate
	interpolate:
	wrap
	wrap:

	converting	top
	asTexture

	flipping	top
	flipVertically Flip the texture vertically