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/*
* =========================================================================
* dlg.h - A header file to define parameters for DLG files.
* Copyright (c) 2000 Fred M. Erickson
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* =========================================================================
*/
#define DLG_RECORD_LENGTH 80
#define MAX_ATTRIB_RECORD_LENGTH 1000
#define HYPSOGRAPHY 20
#define HYDROGRAPHY 50
#define VEG_SURFACE_COVER 70
#define NON_VEG_FEATURES 80
#define BOUNDARIES 90
#define SURVEY_CONTROL 150
#define ROADS_AND_TRAILS 170
#define RAILROADS 180
#define PIPE_TRANS_LINES 190
#define MANMADE_FEATURES 200
#define PUBLIC_LAND_SURVEYS 300
#define MAX_A_ATTRIB 100 // Maximum number of Area attributes
#define MAX_L_ATTRIB 100 // Maximum number of Line attributes
#define MAX_POLY_NUM MAX_AREAS // Maximum number of stored polygon attribute references
#define MAX_LINE_LIST 2000 // Maximum size of a line list for output.
#define MAX_EXTRA 8 // Maximum number of attributes per line, area, or node entry
#define MAX_ATTRIB_FILES 10 // Maximum number of SDTS attribute files that we can read in
#define MAX_LINES 25938 // Theoretical maximum number of lines in a 100K DLG file. This number may be out of date.
#define MAX_AREAS 25960 // Theoretical maximum number of areas in a 100K DLG file. This number may be out of date.
#define MAX_NODES 25960 // Theoretical maximum number of nodes in a 100K DLG file. This number may be out of date.
/*
* For storing linked lists of points.
*/
struct point {
double x;
double y;
struct point *point;
};
/*
* Storage for attribute types.
*/
struct maj_min {
short major;
short minor;
};
struct attribute {
short major;
short minor;
struct attribute *attribute;
};
/*
* The sizes of the nodes, areas, and lines arrays are their theoretical maximum values.
* It would probably be cooler to malloc() these as we go, but coolness was not an
* objective of this program. It would still be cool to read the maximum values from
* the DLG file headers and check them against the values below to verify that
* the standards haven't changed and left this program behind.
*/
struct nodes {
short id;
double x;
double y;
short number_attrib;
struct attribute *attribute;
};
struct areas {
short id;
double x;
double y;
short number_attrib;
struct attribute *attribute;
};
struct lines {
short id;
short start_node;
short end_node;
short left_area;
short right_area;
short number_coords;
struct point *point;
short number_attrib;
struct attribute *attribute;
};
/*
* Arrays to keep track of attributes from various SDTS files.
*/
struct attribute_list {
short major[MAX_EXTRA];
short minor[MAX_EXTRA];
};
struct polygon_attrib {
short poly_id;
long attrib;
char module_num;
};
void fill_area(struct datum *, double, double, long, struct image_corners *);
void process_dlg_optional(int, int, struct image_corners *, long);
long process_dlg_sdts(char *, char *, long, struct image_corners *, long, long);
void draw_lines(struct datum *, struct point *, long, struct image_corners *);
void process_attrib(char *);
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