CIVL 114 Civil Engineering Drawing

1
CIVL 114Civil Engineering Drawing

• Topic 8
• AutoLISP program
• Introduction to 3D drawing

2
Outline

• AutoLISP program
• Plotting with layouts
• Inserting external reference and image
• Introduction to 3D drawing
• Reference reading

3
AutoLISP Program

• For CIVL102 and 114 students only
• A programming language for AutoCAD
• Autoplot program
• To plot 2-D points labels automatically

4
AutoLISP Program

• Procedures
• Download the AutoLISP program file from
  teaching.ust.hk/civl114 and open it with Word
  (or any word processor)
• Save as a plain text type (i.e. a text file),
  with
• filename AUTOPLOT.LSP (include the quotes)
• drive your AutoCAD program directory
• (usually C\Program Files\ACAD2006)
• (alternatively C\temp)
• (if the computer does not allow you to save in
  Program Files directory)

5
AutoLISP Program

• Create your data as a text file
• each line MUST follow this format
• Easting (6 digits3 decimals), one space,
  Northing, one space, Point name
• for example,
• 123456.789 222888.333 P5
• 234567.899 333888.222 G5-Point8
• i.e. E and N must each have 6 digits 3 decimals
• Point name can have any number of characters
• Do not hit enter/space when you finish
  typing the last point name, just save the file!

6
AutoLISP Program

• Recommended data preparation procedure
• (i) prepare the 3 columns of required data (E N
  name) in Excel
• (ii) copy the data and paste to word (becomes a
  table)
• (iii) Table Convert Table to Text Separate
  Text with (Others type one space)
• (iv) delete any space(s) after the last character
  at the end
• (v) File Save as (Save as Type Plain Text)
• If you use the trial data on the web, make
  sure you use IE not Netscape to save it,
  otherwise there may be formatting problems.

7
AutoLISP Program

• Run AutoCAD, and in the command line, type
• (LOADAUTOPLOT) including the ( )
• OR
• (if program was saved on non-default directory)
• Tools Options Files click on the in
  front of Support File Search Path- Add (enter a
  permitted directory such as C\temp)
• and
• (LOADC/temp/autoplot)
• As program requests, select the saved data file
• All points in data file are plotted and labeled
  automatically!

8
Plotting with layouts

• Using layouts
• Creating a new layout
• Creating multiple views in one layout
• Plotting multiple views

9
3D Drawing

• User Coordinate System (UCS)
• Tools New UCS -
• Shortcut bar (Right click ACAD tick UCS)
• Type UCS N --

10
3D Drawing

• 3D orbit
• View 3D orbit
• Shortcut bar
• (Right click ACAD
• tick 3D orbit)
• View
• View 3D views
• Shortcut bar
• (Right click
• ACAD view)

11
3D Drawing

• Dice
• 50 x 50 mm cube
• 5mm-diameter hemispheres subtracted from the dice
  for the black dots
• Fillet the edges of the cube with fillet radius
  3mm

12
Reference reading

• Textbook
• More AutoLISP programs of interest to engineers
• http//jefferypsanders.com