The GNU 3DLDF Sundials Page

Author: Laurence D. Finston

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Last updated: November 25, 2010


Table of Contents

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Calculating Dials
Dodecahedron Model

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Calculating Dials

2007.10.10.
The following files are similar to the ones in the files sundl_02.* below. They, too, contain samples of generating vertical and horizontal sundials for various cities, but I have added more in these files.

2007.10.11.
Please note: The code for generating sundials is experimental. I will do my best to ensure that they are correct, but I cannot guarantee this. I would be grateful for any corrections.

2007.10.11.
Please note: The perspective projections are duplicated at the front of the document, so it's probably not a good idea to print out the entire file!

2007.10.11.
I have put the code for generating the images into a macro called draw_sundials. The definition is contained in the file sundl_03.lmc, which is included in sundl_03.ldf. draw_sundials is also included in the file sundials.lmc in the distribution, but that version is likely to change. It may change in ways that will break the code in sundl_03.ldf, which is why sundl_03.ldf includes sundl_03.lmc and not sundials.lmc. The definition of draw_sundials in sundl_03.lmc is not completely bullet-proof.


GNU 3DLDF code:  sundl_03.ldf
Macro definition file:  sundl_03.lmc
TeX code:  sundl_03.txt
PostScript file:  sundl_03.ps
PDF file:  sundl_03.pdf
Compressed (gzipped) PostScript file:  sundl_03.ps.gz
Compressed (gzipped) PDF file:  sundl_03.pdf.gz

2007.10.07. The following files contain samples of generating vertical and horizontal sundials for the latitudes of Chicago, Illinois, USA, Göttingen, Germany, and London, UK. The time division lines are found by means of intersecting planes.


GNU 3DLDF code:  sundl_02.ldf
TeX code:  sundl_02.txt
PostScript file:  sundl_02.ps
PDF file:  sundl_02.pdf
Compressed (gzipped) PostScript file:  sundl_02.ps.gz
Compressed (gzipped) PDF file:  sundl_02.pdf.gz

2007.09.30.
GNU 3DLDF code:  sundl_01.ldf
TeX code:  sundl_01.txt
PostScript file:  sundl_01.ps
PDF file:  sundl_01.pdf
Compressed (gzipped) PostScript file:  sundl_01.ps.gz
Compressed (gzipped) PDF file:  sundl_01.pdf.gz

Dodecahedron Model

2007.11.08.
The following files currently contain the source files for generating a plan of a dodecahedron with a single sundial face and the output. There are additional diagrams illustrating how the face is found. I plan to add additional sundial faces for other more-or-less southward-pointing faces.


GNU 3DLDF code:  dodec_03.ldf
Macro definition file:  dodec_03.lmc
TeX code:  dodec_03.txt
PostScript file:  dodec_03.ps
PDF file:  dodec_03.pdf
Compressed (gzipped) PostScript file:  dodec_03.ps.gz
Compressed (gzipped) PDF file:  dodec_03.pdf.gz


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