Markus Neteler 0f9edc1ed8 v.hull manual: add note on where parameter and layer option setting 7 лет назад
..
Makefile a0c262926a v.hull: remove -a flag, add -r flag and cats and where options 12 лет назад
README db49180dd7 welcome to GRASS 7.0.svn 17 лет назад
chull.c e0607ef6b1 v.hull: message cosmetics, add keyword for 3D 12 лет назад
globals.h 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 17 лет назад
hull.c d33152f1d5 Numerous typos fixed (identified with tools/fix_typos.sh) 8 лет назад
hull.h a0c262926a v.hull: remove -a flag, add -r flag and cats and where options 12 лет назад
macros.h 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 17 лет назад
main.c e0607ef6b1 v.hull: message cosmetics, add keyword for 3D 12 лет назад
read.c f078f17bab v.hull: use new vector li fns for cats and where options 12 лет назад
v.hull.html 0f9edc1ed8 v.hull manual: add note on where parameter and layer option setting 7 лет назад
v_hull.png db49180dd7 welcome to GRASS 7.0.svn 17 лет назад
v_hull_3d.png babb0aba89 v.hull manual: 3D screenshot added 10 лет назад
write.c d33152f1d5 Numerous typos fixed (identified with tools/fix_typos.sh) 8 лет назад

README

ALGORITHM

v.hull calculates the planar convex hull of a sites list by
means of an algorithm like Graham scan, by computing
first the upper part of the convex hull, and the
the lower part. The algorighm has been converted to C
from the pseudo-code found in "Computational Geometry,
algorithms and applications", M. de Berg, M. van Kreveld,
M. Overmars, O. Schwarzkopf, Springer.
Some reference about the algoright can be found in the
online course "CMSC 754: Computational geometry" by Dave Mount.


Andrea Aime 9/2001

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chull.c
http://maven.smith.edu/~orourke/books/compgeom.html
http://maven.smith.edu/~orourke/books/ftp.html