Polygonal Creation
There are a number of ways to model an object. Most polygonal
meshes start from a primitive, a polygon operation with splines, or a
single polygon.
Starting from a primitive is the most common way to create
polygons. Complex shapes can be made starting with a box (box
modeling), but there are other primitives that you can start from,
like a sphere, a cylinder, a torus, or a plane.
You can also start with a spline (or curve) and then apply some mod-
ification tool, like rotation, extrusion, or loft, to generate a new
mesh.
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Chapter 1 – Polygonal System Basics
Figure 1-15: Notice the flipped normals on the right. External polygons are
invisible and internal polygons become visible.
Figure 1-16: Primitives.
By starting from a single polygon you can obtain full control over
your mesh if you correctly plan the topology of the object. When
you start with a single polygon, it is common to progress the model-
ing by extruding the edge of the polygon until you get a shell of
faces, as shown in Figure 1-18.
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Chapter 1 – Polygonal System Basics
Figure 1-17: Starting from a spline.
Figure 1-18: Starting from a single polygon and then extruding the lateral
edges three times.
Figure 1-19: Selecting the bottom edges and extruding them a couple of
times gives us a quad polygon surface that started from a single polygon.
With this method it is possible to create complex inorganic forms, as well as
organic ones. With a good blueprint, you can use this method to model cars
or any other vehicle.
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