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In This Chapter

So far in this book, you learned to create interesting 3D objects, some by starting with 2D shapes that, through various modifiers and construction methods such as lofting, end up as 3D objects. You also have started with 3D primitive objects and pushed and pulled at sub-object level until they resembled a boat, for example. In any case, all the objects you created are classified as polygon mesh objects, objects made up of triangular or quad sets of vertices, edges, and surfaces.

In this chapter, you learn a different form of modeling in which the final objects are made of patch surfaces. These smooth-flowing surfaces can be manipulated by adjusting Bézier handles at each vertex that influence the curvature of the surface between adjacent vertices in a weighted manner. Figure 10.1 shows a basic comparison between an editable mesh surface and an editable patch surface. In each, a vertex has been moved in the Z-axis. The editable mesh has a vertex at each visible intersection, whereas the editable patch has only nine total vertices. The white lines on this patch surface are for display only and are not all editable edges. There is a clear difference in the surfaces of the two objects.


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