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.
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:
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
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.
* 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
From 1993 to 2001, I developed it into its current form.
RogCAD is freeware. - Roger Luebeck
Twins Paradox (html)
Twin Paradox Abstract (pdf)
Clock Paradox Animation (html)
Twins Paradox in Relativity (html)
Twins Paradox Resolution