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

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