| ILLUSTRATING SHADOWS focusing on education and interesting practical aspects of sundial design |
| Book purchase options are here... |
| Email comments or questions to the author at: illustratingshadows at yahoo dot com |
| MAIN TURBO-CAD FILE PAGE ( vbs macros and tcw files also) |
| MAIN Euler PAGE [using Euler] |
| MAIN PDA/PalmPilot PAGE [Palm OS standalone, and, DocsToGo] |
| SUNDIAL PROGRAMS IN COBOL There is no serious intent for these to be practical dial programs, the ATAN function has issues for a start, and for another, COBOL is just not commonly used on PCs. The COBOL programs are only for fun, and for legacy reasons. Similarly, I have a good IBM 1401 simulator, and will probably write an h-dial program in autocoder, using table lookup for ATAN, however, the reasons are the same, namely to honor the ancient legacy systems. Yes, I did program the IBM 1401 in the days of way back when. |
| An IDE COBOL compiler is here, it runs these programs, but will time out until you purchase a license. It is called KOBOL |
| H-DIAL SUNDIAL PROGRAMS IN COBOL Cobol H-dial with the general full algorithm using iteration COBOL-hDial-series.cob Cobol H-dial using inbuilt trig functions note that angles are better than using my iterative trig series COBOL-hDial-functions.cob KOBOL notes on usage are here. |
| Illustrating Time's Shadow ~ ISBN 0-9765286-8-1 plus 0-9765286-9-X and ~ Lib Cong 2005900674 plus 2006930654 Merges Illustrating Shadows and Illustrating More Shadows, deletes duplicated material, and techniques that are complex and replaced by easier methods, adds new material. Hands on, empirical, geometric, trigonometric, CAD, and spreadsheet dial design for small dials plus garden dials using common masonry supplies, clay, and glass, with emphasis on many calendar line techniques, and inclined decliners, while providing details on the use of DeltaCAD programming including the animation of many sheets as parameters vary. Get CD here. Case studies abound with associated problems solved, and cover the infamous inclined decliner, as well as all the other kinds of outdoor dials. You get a free CD of booklets, spreadsheets, VRML/WRL files, templates, etc with the book. The CD has all books and booklets and programs along with source code. PayPal here to buy. |