Visit: RogCAD Girder and Panel Building Set home page
RogCAD is freeware. Click here. music
R o g C A D 3 D m o d e l i n g
	Click on a New York City landmark for full image
Hull wireframe modeled in RogCAD Hull surface modeled in RogCAD

RogCAD, for DOS and Windows operating systems Keyboard data entry CAD software from yesteryear, for technically oriented users. For hobby or productivity. This software, typical of simplistic 80's CADware, does not provide photo-realism or fast modeling routines, but it does provide complete control over the output, being keyboard entry based. It's especially useful for combining wireframe modeling with surface modeling in a customized manner. Also, being keyboard entry based, it allows for easy editing of designs. One simply edits a text file containing the data elements, using Notepad or any text editor. RogCAD is a general use CAD program. You can request a copy of it or hire me to model your project for you. Recent project: BVI yacht 02/26/06 Recent project: BVI yacht 04/03/06 Recent project: BVI yacht animation Recent project: Sunrise - sunset modeling Recent project: Virtual Girder and Panel (1960 toy) (Also visit the Girder and Panel home page)	You can take a look at some output from a recent project by clicking here. It's a proposed awning/ possible screenporch for a client's cabin. Here's another recent project for a house addition - New workshop/office.    05/13/03 update. FREEWARE: If you would just like a copy of RogCAD, drop me a line. (But first take a look at the How To document, which is a brief introduction to using RogCAD, then the instruction document for the DOS version.) RogCAD is available in 640 X 480 for DOS (15 colors per palette), and 1024 X 768, 1280 X 960, 1400 X 1050, and 1600 X 1200 for Windows (255 colors per palette). Here's the Windows 1024 x 768 interface: gear       cineplex
Click image for better detail Projects in RogCAD are built up mostly through the use of cubic primitives. The user defines a cubic shape by specifying two diagonally opposite vertices. RogCAD automatically supplies the remaining six vertices as well as the connecting lines and planes. These cubic elements can be skewed, resized, rotated, translated and repeated along straight or curved lines. Thus generated are things like rows of mitered boards, windows, or rows of buildings. Points, lines and planes can also be defined independently, and are integrated with the cubic primitive data structures, as are curved surfaces. Complex curved surfaces are modeled by stretching basic circular shapes in a variety of directions. The boat shown here required about two hours of data entry.

 Limitations:

   *  Not compatible with any other CAD format.

   *  Slow learning curve.  You need to have an
      appreciation for the old fashioned "nuts and bolts"
      approach used in this software.

   *  Contains no libraries of predrawn elements, 
      therefore not best suited for detailed 
      drawings of standard designs.  Best suited 
      for accurately conveying the overall look of 
      an object, especially the unconventional.

   *  Surface modeling of curved surfaces is not
      fully automatic and requires alot from the user.

   *  Surface modeling of complex objects needs to
      be done in multiple operations.


 I originally wrote RogCAD to run on my old IBM XT
 with the text-only monitor.  The data points had to 
 be plotted on paper by hand and then connected with 
 a straightedge.

 From 1993 to 2001, I developed it into its current form. 

 RogCAD is freeware.  - Roger Luebeck


 RogCAD code

Twins Paradox (html)
Twin Paradox Abstract (pdf)
Clock Paradox Animation (html)
Spacetime (html)
Twins Paradox in Relativity (html)
Twins Paradox Resolution
Synopsis (pdf)
Book


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