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saoimage.lha
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rgnmake.c
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C/C++ Source or Header
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1991-08-03
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10KB
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332 lines
#ifndef lint
static char SccsId[] = "%W% %G%";
#endif
/* Module: rgnmake.c (Region Make)
* Purpose: Create cursor regions given sets of parameters
* Subroutine: make_next_region() returns: void
* Xlib calls: none
* Copyright: 1989 Smithsonian Astrophysical Observatory
* You may do anything you like with this file except remove
* this copyright. The Smithsonian Astrophysical Observatory
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
* Modified: {0} Michael VanHilst initial version 11 May 1989
* {1} MVH box dims are read as diameters 7 Dec 1989
* {2} MVH support for text and arrow label cursors 1 Jan 1991
* {n} <who> -- <does what> -- <when>
*/
#ifndef VMS
#ifdef SYSV
#include <string.h> /* strlen, strcat, strcpy, strrchr */
#else
#include <strings.h> /* strlen, strcat, strcpy, rindex */
#define strchr index
#endif
#else
#include <string.h> /* strlen, strcat, strcpy, strrchr */
#endif
#include <stdio.h> /* get stderr, define sscanf */
#include <math.h> /* sin, cos, etc */
#include <X11/Xlib.h> /* X window stuff */
#include <X11/Xutil.h> /* X window manager stuff */
#include "hfiles/constant.h" /* define codes */
#include "hfiles/define.h" /* TWO_PI */
#include "hfiles/struct.h" /* declare structure types */
#include "hfiles/extern.h" /* extern main SAOimage parameter structures */
/* Amount of space for string is actually (CURSOR_MAX - 1)*sizeof(XPoint) */
struct curText {
int char_cnt;
char string[CURSOR_MAX*2];
};
#ifdef ANSIC
void make_next_region( int type, char *line, int exclude,
int draw, float *scratch, int scratch_max);
static void parse_error( char* line);
static void make_annuli( struct cursorRec *region, char *line,
float *radii, int radii_max);
void make_polygon( char *line, int exclude, int draw,
float *vertex_coord, int coord_max);
void make_polygon( char *line, int exclude, int draw,
float *vertex_coord, int coord_max);
static int parse_coords( char *line, float *coord, int maxcnt);
#else
static void make_annuli(), parse_error();
static int parse_coords();
struct cursorRec *get_new_cursor();
char *next_token();
void set_cursor_from_file_coords(), disp_cursor();
void make_polygon(), free_cursor();
int parse_radii();
void set_cursor_from_file_coords(), make_new_annulus();
void set_polygon_from_file_coords();
#endif
#define DEG(r) ((360.0 / TWO_PI) * (r))
#define RAD(d) ((TWO_PI / 360.0) * (d))
extern int CircleCnt;
extern int EllipseCnt;
/* Subroutine: make_next_region
* Purpose: Make and install a region given basic file coord parameters
*/
#ifdef ANSIC
void make_next_region( int type, char *line, int exclude,
int draw, float *scratch, int scratch_max )
#else
void make_next_region( type, line, exclude, draw, scratch, scratch_max )
int type; /* i: cursor type */
char *line; /* i: ascii string with parameters */
int exclude; /* i: region-is-exclude_region */
int draw; /* i: draw-region-after-making-it */
float *scratch; /* i: scratch space for list of floats */
int scratch_max; /* i: size of scratch space */
#endif
{
struct cursorRec *region;
float angle, tempX, tempY;
int point_cnt, tokens, char_cnt;
int annuli = 0;
switch( type ) {
case COP_Point:
point_cnt = 0;
break;
case COP_Box:
point_cnt = 5;
break;
case COP_Annuli:
annuli = 1;
type = COP_Circle;
case COP_Circle:
point_cnt = CircleCnt + 1;
break;
case COP_Ellipse:
point_cnt = EllipseCnt + 1;
break;
case COP_Arrow:
point_cnt = 6;
break;
case COP_Text:
if( 3 != sscanf(line, "%f%f%d", &tempX, &tempY, &char_cnt) ) {
parse_error(line);
return;
}
point_cnt = ((char_cnt + 1) / sizeof(XPoint)) + 2;
break;
case COP_Polygon:
make_polygon(line, exclude, draw, scratch, scratch_max);
default:
return;
}
region = get_new_cursor(point_cnt, 0);
region->type = type;
region->point_cnt = point_cnt;
if( (region->next_region = cursor.next_region) != NULL )
region->index = cursor.next_region->index + 1;
else
region->index = 1;
cursor.next_region = region;
/* Put in text cursor info */
if( type == COP_Text ) {
struct curText *curtext = (struct curText *)cursor.next_region->points;
curtext->char_cnt = char_cnt;
line = strchr(line, '\"');
(void)strncpy(curtext->string, &line[1], char_cnt);
region->file.X = tempX;
region->file.Y = tempY;
} else {
tokens = sscanf(line, "%f%f%f%f%f", ®ion->file.X, ®ion->file.Y,
®ion->file.Xdim, ®ion->file.Ydim, &angle);
if( type == COP_Box ) {
/* Boxes in PROS use diameter, internally they use radius */
region->file.Xdim *= 0.5;
region->file.Ydim *= 0.5;
}
if( (tokens > 4) && (type != COP_Circle) && (type != COP_Point) ) {
region->rot.angle = RAD((double)angle);
region->rot.cos = cos(PI - region->rot.angle);
region->rot.sin = sin(PI - region->rot.angle);
} else {
region->rot.angle = 0.0;
region->rot.cos = -1.0;
region->rot.sin = 0.0;
if( (tokens < 3) || (type == COP_Point) ) {
if( type != COP_Point ) {
parse_error(line);
cursor.next_region = region->next_region;
free_cursor (region);
return;
} else {
region->file.Xdim = 0.0;
/* Recurse on a list of points */
if( tokens >= 4 ) {
/* Advance to next coordinate pair */
line = next_token (line, 2);
make_next_region(type, line, exclude, draw, scratch, scratch_max);
}
}
if( (tokens < 4) || (type == COP_Circle) )
region->file.Ydim = region->file.Xdim;
}
}
}
if( (region->exclude_region = exclude) )
region->draw = &color.gcset.excl;
else
region->draw = &color.gcset.incl;
region->win.display = dispbox.display;
region->win.ID = dispbox.ID;
region->overwrites_image_data = 1;
/* in case of circular annuli, this was just the beginning */
if( annuli ) {
region->annuli = 1;
make_annuli(region, line, scratch, scratch_max);
} else {
set_cursor_from_file_coords(region, &coord.filetodisp);
}
if( draw )
disp_cursor(region);
}
/* Subroutine: parse_error
* Purpose: Print parsing error message
*/
#ifdef ANSIC
static void parse_error( char* line )
#else
static void parse_error( line )
char* line;
#endif
{
(void)fprintf(stderr, "Parse error: too few parameters parsed\n");
(void)fprintf(stderr, "-> %s\n", line);
}
/* Subroutine: make_annuli
* Purpose: Make circular annuli given base region and string of radii
* Note: Base region is circle of first radius
* Method: Make base region as each ring, then copy as one of its annuli
* (mimics procedure user would take).
* Called by: make_region() above
*/
#ifdef ANSIC
static void make_annuli ( struct cursorRec *region, char *line,
float *radii, int radii_max )
#else
static void make_annuli ( region, line, radii, radii_max )
struct cursorRec *region;
char *line;
float *radii;
int radii_max;
#endif
{
int i, cnt;
/* Advance beyond center coords */
line = next_token(line, 2);
cnt = parse_radii(line, radii, radii_max);
/* Reverse order for ascending insert sort from list in ascending order */
for( i = cnt - 1; i >= 0; i-- ) {
region->file.Xdim = radii[i];
region->file.Ydim = region->file.Xdim;
set_cursor_from_file_coords(region, &coord.filetodisp);
make_new_annulus(region);
}
}
/* Subroutine: parse_coords
* Purpose: Parse coordinate pairs off the line
* Called by: make_polygon() below
*/
#ifdef ANSIC
static int parse_coords ( char *line, float *coord, int maxcnt )
#else
static int parse_coords ( line, coord, maxcnt )
char *line;
float *coord;
int maxcnt;
#endif
{
int i;
/* Keep reading while there are tokens on the line */
for( i=0; (line != NULL) && (i < maxcnt); i+= 2 ) {
if( sscanf(line, "%f%f", &coord[i], &coord[i+1]) != 2 )
return( 0 );
line = next_token(line, 2);
}
return( i );
}
/* Subroutine: make_polygon
* Purpose: Parse line and make a polygon region
*/
#ifdef ANSIC
void make_polygon ( char *line, int exclude, int draw, float *vertex_coord,
int coord_max )
#else
void make_polygon ( line, exclude, draw, vertex_coord, coord_max )
char *line;
int exclude;
int draw;
float *vertex_coord;
int coord_max;
#endif
{
int i, j;
int cnt;
struct cursorRec *region;
cnt = parse_coords(line, vertex_coord, coord_max);
if( cnt % 2 ) {
(void)fprintf(stderr, "Parse error: odd number for pairs: %d\n", cnt);
(void)fprintf(stderr, "-> %s\n", line);
return;
}
cnt /= 2;
region = get_new_cursor(cnt + 1, cnt);
region->type = COP_Polygon;
region->poly_cnt = cnt;
region->point_cnt = cnt + 1;
for( j=0, i=0; i<cnt; i++ ) {
region->poly[i].fileX = vertex_coord[j++];
region->poly[i].fileY = vertex_coord[j++];
}
region->file.X = vertex_coord[0];
region->file.Y = vertex_coord[1];
set_polygon_from_file_coords(region, &coord.filetodisp, 0);
if( (region->next_region = cursor.next_region) != NULL )
region->index = cursor.next_region->index + 1;
else
region->index = 1;
cursor.next_region = region;
if( (region->exclude_region = exclude) )
region->draw = &color.gcset.excl;
else
region->draw = &color.gcset.incl;
region->win.display = dispbox.display;
region->win.ID = dispbox.ID;
region->overwrites_image_data = 1;
if( draw )
disp_cursor(region);
}