Planar
Planar mapping pushes pixels through the world on one plane. It works well on relatively flat objects and can be applied to multiple objects.
To create a planar texture mapper, go to,
Menu Bar-> Create-> Texture Mapper-> 
Planar
Planar Mapping Properties
Many of the Texture Mapper properties are shared between the different types. However Lens parameters may vary. See Perspective Mapping properties for the shared attributes.
Lens
- Resolution: The resolution of texture being applied to objects. This should match the selected materials resolution.
- Aspect Ratio: The aspect ratio of the texture mapper based on resolution.
- Width: How wide is the planar mapper in physical units of measurement
- Height: How high is the planar mapper in physical units of measurement
- Dynamic Clipping Planes: With this enabled, Clipping Planes, Near and Far will automatically set themselves to the region of interest.
- Near: This sets the closest plane the texture mapper will begin to render within.
- Far: This sets the furthest plane the texture mapper will will stop to render within.