GRASS GIS 8 Programmer's Manual 8.2.1RC1(2022)-exported
dataquad.h
Go to the documentation of this file.
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
25#ifndef DATAQUAD_H
26
27#define DATAQUAD_H
28
29#define NW 1
30#define NE 2
31#define SW 3
32#define SE 4
33
34
35/*!
36 * Point structure to keep coordinates
37 *
38 * It also contains smoothing for the given point.
39 */
40struct triple
41{
42 double x;
43 double y;
44 double z;
45 double sm; /*!< variable smoothing */
46};
47
49{
50 double x_orig;
51 double y_orig;
52 double xmax;
53 double ymax;
54 int n_rows;
55 int n_cols;
57 struct triple *points;
58};
59
60struct triple *quad_point_new(double, double, double, double);
61struct quaddata *quad_data_new(double, double, double, double, int, int, int,
62 int);
63int quad_compare(struct triple *, struct quaddata *);
64int quad_add_data(struct triple *, struct quaddata *, double);
65int quad_intersect(struct quaddata *, struct quaddata *);
66int quad_division_check(struct quaddata *, int);
67struct quaddata **quad_divide_data(struct quaddata *, int, double);
68int quad_get_points(struct quaddata *, struct quaddata *, int);
69
70#endif
struct quaddata * quad_data_new(double, double, double, double, int, int, int, int)
Definition: dataquad.c:62
struct quaddata ** quad_divide_data(struct quaddata *, int, double)
Definition: dataquad.c:237
int quad_get_points(struct quaddata *, struct quaddata *, int)
Definition: dataquad.c:323
int quad_intersect(struct quaddata *, struct quaddata *)
Definition: dataquad.c:180
int quad_add_data(struct triple *, struct quaddata *, double)
Definition: dataquad.c:145
int quad_division_check(struct quaddata *, int)
Definition: dataquad.c:219
int quad_compare(struct triple *, struct quaddata *)
Definition: dataquad.c:100
struct triple * quad_point_new(double, double, double, double)
Definition: dataquad.c:38
double ymax
Definition: dataquad.h:53
double y_orig
Definition: dataquad.h:51
double x_orig
Definition: dataquad.h:50
struct triple * points
Definition: dataquad.h:57
int n_points
Definition: dataquad.h:56
double xmax
Definition: dataquad.h:52
int n_cols
Definition: dataquad.h:55
int n_rows
Definition: dataquad.h:54
double z
Definition: dataquad.h:44
double sm
Definition: dataquad.h:45
double x
Definition: dataquad.h:42
double y
Definition: dataquad.h:43