148 lines
3.9 KiB
C
148 lines
3.9 KiB
C
|
/* types.h: general types.
|
||
|
|
*
|
||
|
|
* Copyright (C) 1992 Free Software Foundation, Inc.
|
||
|
|
*
|
||
|
|
* 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 3, 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, see <https://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef TYPES_H
|
||
|
|
#define TYPES_H
|
||
|
|
|
||
|
|
/* Booleans. */
|
||
|
|
typedef enum { false = 0, true = 1 } boolean;
|
||
|
|
|
||
|
|
/* The X11 library defines `FALSE' and `TRUE', and so we only want to
|
||
|
|
define them if necessary. */
|
||
|
|
#ifndef FALSE
|
||
|
|
#define FALSE false
|
||
|
|
#define TRUE true
|
||
|
|
#endif /* FALSE */
|
||
|
|
|
||
|
|
/* The usual null-terminated string. */
|
||
|
|
typedef char *string;
|
||
|
|
|
||
|
|
/* A generic pointer in ANSI C. */
|
||
|
|
typedef void *address;
|
||
|
|
|
||
|
|
/* We use `real' for our floating-point variables. */
|
||
|
|
typedef double real;
|
||
|
|
|
||
|
|
/* A character code. Perhaps someday we will allow for 16-bit
|
||
|
|
character codes, but for now we are restricted to 256 characters per
|
||
|
|
font (like TeX and PostScript). */
|
||
|
|
typedef unsigned char charcode_type;
|
||
|
|
|
||
|
|
|
||
|
|
/* Used in file formats. */
|
||
|
|
typedef unsigned char one_byte;
|
||
|
|
typedef signed char signed_byte;
|
||
|
|
typedef unsigned short two_bytes;
|
||
|
|
typedef short signed_2_bytes;
|
||
|
|
typedef unsigned int four_bytes;
|
||
|
|
typedef int signed_4_bytes;
|
||
|
|
typedef int byte_count_type;
|
||
|
|
|
||
|
|
/* These are intended to be used for output in file formats where a
|
||
|
|
``byte'' is defined to be eight bits, regardless of the hardware. */
|
||
|
|
#define ONE_BYTE_BIG (1 << 8)
|
||
|
|
#define TWO_BYTES_BIG (1 << 16)
|
||
|
|
#define THREE_BYTES_BIG (1 << 24)
|
||
|
|
|
||
|
|
|
||
|
|
/* Complex numbers. */
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
real real;
|
||
|
|
real imag;
|
||
|
|
} complex;
|
||
|
|
typedef enum { first_complex_part, second_complex_part} complex_part_type;
|
||
|
|
typedef enum { polar_rep, rectangular_rep} complex_rep_type;
|
||
|
|
|
||
|
|
|
||
|
|
/* Dimensions of a rectangle. */
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
unsigned height, width;
|
||
|
|
} dimensions_type;
|
||
|
|
|
||
|
|
#define DIMENSIONS_HEIGHT(d) ((d).height)
|
||
|
|
#define DIMENSIONS_WIDTH(d) ((d).width)
|
||
|
|
|
||
|
|
|
||
|
|
/* Cartesian points. */
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
int x, y;
|
||
|
|
} coordinate_type;
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
double x, y;
|
||
|
|
} real_coordinate_type;
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
double align_threshold;
|
||
|
|
double corner_always_threshold;
|
||
|
|
unsigned int corner_surround;
|
||
|
|
double corner_threshold;
|
||
|
|
double error_threshold;
|
||
|
|
unsigned int filter_alternative_surround;
|
||
|
|
double filter_epsilon;
|
||
|
|
unsigned int filter_iteration_count;
|
||
|
|
double filter_percent;
|
||
|
|
unsigned int filter_secondary_surround;
|
||
|
|
unsigned int filter_surround;
|
||
|
|
boolean keep_knees;
|
||
|
|
double line_reversion_threshold;
|
||
|
|
double line_threshold;
|
||
|
|
double reparameterize_improvement;
|
||
|
|
double reparameterize_threshold;
|
||
|
|
double subdivide_search;
|
||
|
|
unsigned int subdivide_surround;
|
||
|
|
double subdivide_threshold;
|
||
|
|
unsigned int tangent_surround;
|
||
|
|
} SELVALS;
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
double align_threshold;
|
||
|
|
double corner_always_threshold;
|
||
|
|
double corner_surround;
|
||
|
|
double corner_threshold;
|
||
|
|
double error_threshold;
|
||
|
|
double filter_alternative_surround;
|
||
|
|
double filter_epsilon;
|
||
|
|
double filter_iteration_count;
|
||
|
|
double filter_percent;
|
||
|
|
double filter_secondary_surround;
|
||
|
|
double filter_surround;
|
||
|
|
boolean keep_knees;
|
||
|
|
double line_reversion_threshold;
|
||
|
|
double line_threshold;
|
||
|
|
double reparameterize_improvement;
|
||
|
|
double reparameterize_threshold;
|
||
|
|
double subdivide_search;
|
||
|
|
double subdivide_surround;
|
||
|
|
double subdivide_threshold;
|
||
|
|
double tangent_surround;
|
||
|
|
} SELVALS;
|
||
|
|
|
||
|
|
#endif /* 1 */
|
||
|
|
|
||
|
|
#endif /* not TYPES_H */
|
