# NAME

Hull - Convex hull type
# SYNOPSIS

#include "h/h_hull.h"
Example compile flags (system dependent):
-DLINUX_X86_64 -DLINUX_X86_64_OPTERON -DGNU_COMPILER
-I/home/kobus/include
-L/home/kobus/misc/load/linux_x86_64_opteron -L/usr/lib/x86_64-linux-gnu
-lKJB -lfftw3 -lgsl -lgslcblas -ljpeg -lSVM -lstdc++ -lpthread -lSLATEC -lg2c -lacml -lacml_mv -lblas -lg2c -lncursesw
typedef struct Hull
{
int dimension;
int num_vertices;
int num_facets;
Matrix *vertex_mp;
Matrix *normal_mp;
Vector *b_value_vp;
Matrix_vector *facets;
Vector *facet_angles_vp;
char *geom_view_geometry;
int filled_resolution;
double min_x;
double min_y;
double min_z;
double max_x;
double max_y;
double max_z;
double filled_scale_x;
double filled_scale_y;
double filled_scale_z;
unsigned char **filled_2D_array;
unsigned char ***filled_3D_array;
}
Hull;

# DESCRIPTION

This type is the convex hull type for the KJB library. Most fields are self
explanatory. The rows of the matri *vertex_mp contain the
vertice vectors. Similarly, the normal vectors are the rows of the matrix
*normal_mp. The values *b_value_vp derived values. For each facet, they are
the dot products of the points on the facet with the normal. This dot product
should be the same for each facet point -- the routine find_convex_hull
computes the average of the values for each facet for improved accuracy. Each
facet of the hull is a space constraint expressed as X.N <= b, where b is the
value in the corresponding row of *b_value_vp.
Each facet is a set of points forming the rows of a matrix in the matrix
array facets.
Finally, if the geovmiew geometry is used, it is stored in the string
geom_view_geometry. This field is rarely used, as the geomview program did
not turn out to be that useful (we don't currently have a version on any
comonly used platform, as none were available when I was interested, perhaps
one is now)
# DISCLAIMER

This software is not adequatedly tested. It is recomended that
results are checked independantly where appropriate.
# AUTHOR

Kobus Barnard
# DOCUMENTER

Kobus Barnard