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

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