The Surface Mapper (WSM) modifier takes a map assigned to a NURBS surface and projects it onto the modified object or objects. Surface Mapper is especially useful for seamlessly applying a single map to a group of surface sub-objects within the same NURBS model. You can also use it for other kinds of geometry.
The NURBS surface's map is projected onto the other geometry in the direction of the NURBS surface's normals, or opposite the normals if the modified object is on the other side of the NURBS surface.
To use the surface mapper world-space modifier:
3ds Max now uses the NURBS surface's normals to project the texture onto the modified objects.
These controls let you choose the NURBS surface to project.
Picks the NURBS surface to use for projection. Click to turn on this button, then click the NURBS surface in an active viewport.
Shows "<none>" before you pick a NURBS surface; shows the name of the surface after you pick one.
These controls let you choose which map channels to use.
Selects the NURBS surface map channel to use before projection.
Selects the modified object's map channel to use after projection.
These controls let you choose how to update the mapping displayed in viewports. They have no effect if Show Map In Viewport is off.
Updates viewports. This is unavailable unless you've chosen Manually.