Specifying Hatch Areas
Every hatch area is defined by a boundary containing the solid fill, pattern, or gradient. The boundary can be determined either by picking a point on the drawing canvas or by selecting an object or set of objects.
Picking Points to Determine Boundaries
When a boundary is picked, AutoCAD uses a raycasting algorithm to determine the precise extents of the area bounded by the objects on screen. In the following steps you will pick points to determine the boundaries of multiple hatch objects:
- Go to the book's web page at www.sybex.com/go/autocad2012essentials, browse to Chapter 8, get the file Ch8-A.dwg, and open it. The drawing (see Figure 8.1) is based on a 100-year-old patent for fluid propulsion (CA 135174) by Nikola ...
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