AutoCAD 2005: Boundary Hatch Enhancements
March 17, 2004 There are several enhancements in AutoCAD 2005
drawing and editing tools. For example the Copy command is now
creates multiple copies by default. The following tutorial
demonstrates the new enhancements in the BHATCH command.
Note: This tutorial is designed for AutoCAD 2005.
1. Download and
then open
2005_Hatch.dwg. The file displays the top view of a chair
[Figure 1].
Figure 1
2. Open the
list of layers from the Layers toolbar and thaw the "New
Elements" layer [Figure 2].
Figure 2
3. A circle
appears in the middle of the drawing. Invoke the TRIM command
(choose Modify > Trim). Select the circle as the cutting edge.
Press Enter and select the hatch to trim it. As you see in
AutoCAD 2005 you can trim hatches with respect to a cutting edge
[Figure 3].
Figure 3
4. The hatch
remains associative with its boundary. For example move the
circle 3 units to the left the hatch is modified respectively
[Figure 4].
Figure 4
5. Invoke the
BHATCH command (choose Draw > Hatch). The Boundary Hatch dialog
box appears. From the list of predefined hatch patterns select
Solid. From the list of colors in the Swatch list select
Magenta. Notice that there is a new option for the hatch draw
order on the right side of the dialog box. Make sure that "Send
behind boundary" is selected [Figure 5].
Figure 5
6. Click the
Pick Points button. Pick a point inside the uppermost closed
area. Press Enter and then click OK to place the hatch in the
area [Figure 6].
Figure 6
7. Repeat the
BHATCH command. Click the Advanced tab. Notice the new Gap
Tolerance option that allows you to hatch open areas [Figure 7].
Make sure that the value is set to 1. This option affects the
HPGAPTOL system variable. You can assign values between 0 and
5000 to this system variable.
Figure 7
8. Click the
Hatch tab. Click the Pick Points button. Pick a point in the
upper open area of the drawing. A message appears on the screen
[Figure 8].
Figure 8
9. Click Yes.
Press Enter and then OK. The hatch appears in the area [Figure
9].
Figure 9
10. Close the
file without saving.
About the Author
Alireza Parsai is the founder of cadpanel.com. He is a
mechanical engineer with more than 12 years experience with
AutoCAD. Alireza is an Autodesk Authorized Author, the AutoCAD
consultant for Al Khawarizmi Institute, a contributing editor
for Augiworld magazine, a writer for CAD Digest, and an
instructor for AUGI Training Program. He has written 8 books in
Farsi, 3 booklets in English, and more than 100 articles for
different magazines and newsletters. You can reach Alireza at
alireza.parsai@cadpanel.com or visit his website
www.cadpanel.com.
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