An Environment Map is a [[Bitmap Image]] used for [[Environment Mapping]]. Common types of environment maps are: - [[Planar Map]] - [[Polar Spherical Map]] - [[Cube Map]] - [[Dual Parabolic Map]] There are two types of maps, View Independent & View Dependent. A View Independent [[Function|Map]] is one that is generated once and does not need to be updated when the $\hat{v}$ changes. A view dependent map is one who needs to be updated whenever the view vector changes.