RogCAD, for DOS and Windows operating systems
3D CAD modeling
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
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.
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),
1024 X 768 and 1280 X 960 for Windows
(255 colors per palette).
Here's the Windows 1024 x 768 interface:
click: gear cineplex
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Click image for better detail
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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 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.
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More about RogCAD features:
* It's strictly keyboard entry, therefore inherently
precise. Design elements fit together seamlessly.
* Data for a project is displayed collectively in a
text file, allowing data entry and editing in any order.
* Can combine wireframe and surface modeling in any manner.
* Provides automatic shading for light source direction.
* Provides customizable grids and multicolor wireframe lines.
* Provides unlimited range of perspective points and
focal points, and allows you to specify these values
using 3D coordinates.
* Can overlay multiple projects.
* Provides excellent control of the color palette.
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 a lot 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
end rogcad rogcad.com site map
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Special Relativity explained in absolute terms -
eliminates the twin paradox, shows Einstein's clock sychronization
diagrammed in absolute terms, and ends all confusion regarding
relative frames of reference. Completely compatible with, and in
fact subsumes, Einstein's relativity. Not Lorentzian relativity.
Reveals what is transpiring behind the scenes of Einstein's
treatment.
Documents:
Relativity in Absolute Terms.
My most comprehensive online document. A concise overview
of why special relativity must be diagrammed in absolute terms.
Twin Paradox Animation on youtube.
More concise text than found in the document below.
Twin Paradox Animation.
Expanded text, and animation of the twin paradox. (Embedded youtube animation.)
Twin Paradox Explained.
A similar discussion of the failure of spacetime diagrams.
Twin Paradox Animation.
Alternative text, and animation of the twin paradox. (Embedded youtube animation.)
Absolute Frame of Reference
Absolute frame of reference in the physics community.
Free pdf file of the book:
Relativity Trail, free pdf format, with 192 pages, 65 diagrams
and 75 illustrations, will provide you with complete
detailed algebraic derivations of all the
kinematical effects of special relativity.
Everything is charted out in absolute terms
against a system at rest with respect to the
totality of the universe for perfect clarity as
well as soundness of theoretical basis. It is
the totality of the universe that imparts the
inertial properties of clock rates and lengths
which generate the effects of relativity. This
is explained in detail in Relativity Trail.
Excerpts from the book Relativity Trail with included images.
Einstein explained in excerpts from Relativity Trail.
Diagrams and derivations from the book Relativity Trail.
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Chaos etc - equations and graphical output.
Eight equations generating exotic behavior,
along with the program code and graphical output.
RogCAD Girder and Panel Building Set
3D CAD virtual building set, modeled after the
1957 - 1962 Kenner Girder and Panel building set.
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Jester (His story and music videos.)
The Hermit Thrush
Uncle Remus illustrations by A. B. Frost
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Vintage American Locks
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home page: olden-days.me
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Hull wireframe modeled in RogCAD Hull surface modeled in RogCAD
Three options for an addition
