2008
The Tile option in the Material Editor is on by default, repeating the image
along the U and V directions. You can use the Tiling values to scale the map
image. Setting negative Tiling values increases the size of the image.
You can also set tiling values in the UVW Map modifier. These settings are in
addition to the tiling values you set for the map in the Material Editor. If the
map's base tiling parameter has a value of 2.0 and the UVW Map modifier has
a tiling value of 3.0 for the same axis, the net result is 2.0 x 3.0 = 6.0. To avoid
confusion about where the tiling is coming from, you may want to set the
map's tiling in its base parameters or with the UVW Map modifier, but not in
both locations.
The Mirror option is a variation on the Tile option. Tile repeats the image
side-by-side, while Mirror flips the image repeatedly.
Topology
When objects and shapes are created, each vertex and/or face is assigned a
number. These numbers are used internally to determine which vertices or
faces are selected at any given time. This numerical arrangement is called
topology.
When you select vertices or faces and apply a modifier to the selection, the
modifier stack keeps track of which faces/vertices the modifier affects. If you
later return to the selection level of the stack and change the selection, you
change the topology to which the modifier is applied.
The term topology refers to the structure of faces and vertices as well as their
numbers.
For example, by carefully setting various parameters, you could make a box
and a cylinder with the same number of vertices. You might then think you
could use the box as a morph target for the cylinder. However, because the
two objects are created with such different methods, the vertex numbers on
these objects would be ordered very differently. Morphing causes each
numbered vertex to go to its corresponding place on the morph target. In a
case such as this, with two objects with such different topology, morphing
from one to the other would cause the object to crumple or turn inside out
as it morphs.
7950 | Glossary