Game Development Reference
In-Depth Information
Look at the two cubes in Figure 5.1 . They look exactly the same; the only way they differ
is in construction.
FIGURE 5.1 Although these cubes look the same, they are constructed differently.
Now look at their wireframes in Figure 5.2 . You can see that the one on the right contains
morepolygonsthantheoneontheleft.Sincetheedgesarestraight, thecubedoesnotneed
the extra polygons to create that straight edge. If we removed these polygons, the cube
would look exactly the same.
FIGURE 5.2 In the wireframe, you can see that the cube on the right unnecessarily uses
far more polygons than the one on the left.
Removing areas that contain shallow angles is also a good way to reduce the polygon
count, although this will slightly affect the way the geometry looks.
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