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rbox_r.c
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Sun, Sep 1, 17:19
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Tue, Sep 3, 17:19 (2 d)
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rCADDMESH CADD_mesher
rbox_r.c
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/*<html><pre> -<a href="../libqhull/index.htm#TOC"
>-------------------------------</a><a name="TOP">-</a>
rbox.c
rbox program for generating input points for qhull.
notes:
50 points generated for 'rbox D4'
*/
#include "libqhull_r.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef _MSC_VER
/* Microsoft Visual C++ -- warning level 4 */
#pragma warning( disable : 4706)
/* assignment within conditional function */
#endif
char
prompt
[]
=
"
\n
\
-rbox- generate various point distributions. Default is random in cube.
\n
\
\n
\
args (any order, space separated): Version: 2001/06/24
\n
\
3000 number of random points in cube, lens, spiral, sphere or grid
\n
\
D3 dimension 3-d
\n
\
c add a unit cube to the output ('c G2.0' sets size)
\n
\
d add a unit diamond to the output ('d G2.0' sets size)
\n
\
l generate a regular 3-d spiral
\n
\
r generate a regular polygon, ('r s Z1 G0.1' makes a cone)
\n
\
s generate cospherical points
\n
\
x generate random points in simplex, may use 'r' or 'Wn'
\n
\
y same as 'x', plus simplex
\n
\
Pn,m,r add point [n,m,r] first, pads with 0
\n
\
\n
\
Ln lens distribution of radius n. Also 's', 'r', 'G', 'W'.
\n
\
Mn,m,r lattice(Mesh) rotated by [n,-m,0], [m,n,0], [0,0,r], ...
\n
\
'27 M1,0,1' is {0,1,2} x {0,1,2} x {0,1,2}. Try 'M3,4 z'.
\n
\
W0.1 random distribution within 0.1 of the cube's or sphere's surface
\n
\
Z0.5 s random points in a 0.5 disk projected to a sphere
\n
\
Z0.5 s G0.6 same as Z0.5 within a 0.6 gap
\n
\
\n
\
Bn bounding box coordinates, default %2.2g
\n
\
h output as homogeneous coordinates for cdd
\n
\
n remove command line from the first line of output
\n
\
On offset coordinates by n
\n
\
t use time as the random number seed(default is command line)
\n
\
tn use n as the random number seed
\n
\
z print integer coordinates, default 'Bn' is %2.2g
\n
\
"
;
/*--------------------------------------------
-rbox- main procedure of rbox application
*/
int
main
(
int
argc
,
char
**
argv
)
{
int
return_status
;
qhT
*
qh
=
(
qhT
*
)
qh_malloc
(
sizeof
(
qhT
));
if
(
argc
==
1
)
{
printf
(
prompt
,
qh_DEFAULTbox
,
qh_DEFAULTzbox
);
return
1
;
}
qh_init_A
(
qh
,
stdin
,
stdout
,
stderr
,
argc
,
argv
);
/* sets qh->qhull_command */
return_status
=
qh_rboxpoints
(
qh
,
qh
->
qhull_command
);
return
return_status
;
}
/*main*/
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