6.0

Table Of Contents
Basic Concepts of Surfacing Wireframe Models | 621
In this example, the top area of the pump is not suitable for a single surface
because there are abrupt changes in its smoothness. The center area is curved
in one direction but straight in the other. When you have a surface area that
can be defined by a straight line between two curves, you can create a ruled
surface between the two curves.
Look beyond the obvious visible surface to find a workable solution. Because
the inlet at the right top area of the pump extends from the surface, consider
making the base surface first and then trimming it to the correct shape.
With the inlet shape removed, you can see possibilities for surfaces. The
shape created by the four wires contains a sharp corner. Avoid creating a
surface from these four wires because they might produce a surface that is
not smooth.
possible surface wire
inlet
abrupt corner