GRASS Programmer's Manual
6.4.2(2012)
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dataquad.h
Go to the documentation of this file.
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/*-
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* Written by H. Mitasova, I. Kosinovsky, D. Gerdes Fall 1992
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* University of Illinois
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* US Army Construction Engineering Research Lab
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* Copyright 1992, H. Mitasova (University of Illinois),
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* I. Kosinovsky, (USA-CERL), and D.Gerdes (USA-CERL)
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*
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* Modified by H.Mitasova November 1996 to include variable smoothing
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*/
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#ifndef DATAQUAD_H
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#define DATAQUAD_H
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#define NW 1
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#define NE 2
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#define SW 3
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#define SE 4
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struct
triple
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{
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double
x
;
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double
y
;
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double
z
;
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double
sm
;
/* structure extended to incl. variable smoothing */
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};
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struct
quaddata
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{
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double
x_orig
;
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double
y_orig
;
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double
xmax
;
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double
ymax
;
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int
n_rows
;
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int
n_cols
;
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int
n_points
;
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struct
triple
*
points
;
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};
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struct
triple
*
quad_point_new
(
double
,
double
,
double
,
double
);
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struct
quaddata
*
quad_data_new
(
double
,
double
,
double
,
double
,
int
,
int
,
int
,
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int
);
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int
quad_compare
(
struct
triple
*,
struct
quaddata
*);
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int
quad_add_data
(
struct
triple
*,
struct
quaddata
*,
double
);
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int
quad_intersect
(
struct
quaddata
*,
struct
quaddata
*);
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int
quad_division_check
(
struct
quaddata
*,
int
);
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struct
quaddata
**
quad_divide_data
(
struct
quaddata
*,
int
,
double
);
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int
quad_get_points
(
struct
quaddata
*,
struct
quaddata
*,
int
);
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#endif
lib
rst
data
dataquad.h
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