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Table Of Contents
Basic Concepts of Surfacing Wireframe Models | 617
Likewise, the side of the top part of the pump constitutes a single surface.
Each of these two surface areas requires a surface because no single surface
could cover both.
Surfaces can contain multiple wires.
All lines inside the four boundaries share the same smooth curvature as the
boundary edges. There are no abrupt curvature changes, so the goal is to sur-
face the entire area with a single surface, using the additional wires to con-
strain the surface shape.
Identifying Base Surface Areas
The bottom of the pump housing appears to be a smoothly-curved area.
However, at the top edge, there is an almost 90-degree bend. Also, a flanged
area is formed by a slot opening in the otherwise smooth area.
The primary guideline in wireframe surfacing is to create an acceptable sur-
face first. Later, add a hole by trimming the surface with the shape of the
hole.
wireframe surface
pump housing close-up
top edge