Plotting Software for the Illustromat-Recordamat System.
Abstract
The Illustromat-Recordamat plotting system forms a complete graphics system. The machines may be used as a digitizer, accepting two or more views of a blueprint, or data on a magnetic tape. As no software existed to prepare magnetic tape input, it became attractive to design a Cal-Comp-like library of subroutines to fulfill this function. Besides greatly expanding the system's capability, compatibility with other government agencies, and/or contractors having access to Cal-Comp software was achieved. The Illustromat plotter is an analog machine with a .005 inch resolution, Combined with the Recordamat 1250-2 mini computer (a 16 bit machine with 8192 words of memory built by Lockheed Electronics) the plotter may be directed to move to a point, draw straight lines, draw circles, and draw general curved lines (using cubic interpolation). Data generated by the routines described in this report drives the plotting system. Driving data is stored as 7 bit NRZI code at a density of 556 bits per inch. Limitations of the hardware and suggested solutions are described. Use of formatted data of two views of an object to reconstruct its three-dimensional representation is a desired goal for the future. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1976
- Accession Number
- ADA021640
Entities
People
- Bernard Soroka
- Morton A. Hirschberg
Organizations
- Ballistic Research Laboratory