GRASS GIS 8 Programmer's Manual 8.4.1(2025)-45ca3179ab
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dataquad.h
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1/*!
2 * \file qtree.c
3 *
4 * \author
5 * H. Mitasova, I. Kosinovsky, D. Gerdes, Fall 1993,
6 * University of Illinois and
7 * US Army Construction Engineering Research Lab
8 *
9 * \author H. Mitasova (University of Illinois),
10 * \author I. Kosinovsky, (USA-CERL)
11 * \author D.Gerdes (USA-CERL)
12 *
13 * \author modified by H. Mitasova, November 1996 (include variable smoothing)
14 *
15 * \copyright
16 * (C) 1993-1996 by Helena Mitasova and the GRASS Development Team
17 *
18 * \copyright
19 * This program is free software under the
20 * GNU General Public License (>=v2).
21 * Read the file COPYING that comes with GRASS for details.
22 */
23
24#ifndef DATAQUAD_H
25
26#define DATAQUAD_H
27
28#define NW 1
29#define NE 2
30#define SW 3
31#define SE 4
32
33/*!
34 * Point structure to keep coordinates
35 *
36 * It also contains smoothing for the given point.
37 */
38struct triple {
39 double x;
40 double y;
41 double z;
42 double sm; /*!< variable smoothing */
43};
44
45struct quaddata {
46 double x_orig;
47 double y_orig;
48 double xmax;
49 double ymax;
50 int n_rows;
51 int n_cols;
53 struct triple *points;
54};
55
56struct triple *quad_point_new(double, double, double, double);
57struct quaddata *quad_data_new(double, double, double, double, int, int, int,
58 int);
59int quad_compare(struct triple *, struct quaddata *);
60int quad_add_data(struct triple *, struct quaddata *, double);
61int quad_intersect(struct quaddata *, struct quaddata *);
62int quad_division_check(struct quaddata *, int);
63struct quaddata **quad_divide_data(struct quaddata *, int, double);
64int quad_get_points(struct quaddata *, struct quaddata *, int);
65
66#endif
struct quaddata * quad_data_new(double, double, double, double, int, int, int, int)
Definition dataquad.c:59
struct quaddata ** quad_divide_data(struct quaddata *, int, double)
Definition dataquad.c:226
int quad_get_points(struct quaddata *, struct quaddata *, int)
Definition dataquad.c:305
int quad_intersect(struct quaddata *, struct quaddata *)
Definition dataquad.c:176
int quad_add_data(struct triple *, struct quaddata *, double)
Definition dataquad.c:139
int quad_division_check(struct quaddata *, int)
Definition dataquad.c:209
int quad_compare(struct triple *, struct quaddata *)
Definition dataquad.c:95
struct triple * quad_point_new(double, double, double, double)
Definition dataquad.c:36
double ymax
Definition dataquad.h:49
double y_orig
Definition dataquad.h:47
double x_orig
Definition dataquad.h:46
struct triple * points
Definition dataquad.h:53
int n_points
Definition dataquad.h:52
double xmax
Definition dataquad.h:48
int n_cols
Definition dataquad.h:51
int n_rows
Definition dataquad.h:50
double z
Definition dataquad.h:41
double sm
Definition dataquad.h:42
double x
Definition dataquad.h:39
double y
Definition dataquad.h:40