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/*
* OverlapMan.h -- Track label overlap avoidance manager header file
*
* Authors :
* Creation date :
*
* $Id$
*/
/*
* Copyright (c) 1993 - 1999 CENA --
*
* This code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This code 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this code; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _OverlapMan_h
#define _OverlapMan_h
#include <string.h>
#include <math.h>
/*
* This is the interface with the zinc widget. To substitute
* a different overlap manager, it is necessary to conform to
* this API.
*/
void
OmRegister(void *w,
void *(*_fnext_track)(void *ptr,
void *item,
int *x, int *y,
int *sv_dx, int *sv_dy,
/* Fri Oct 13 15:16:13 2000
int *label_x, int *label_y,
int *label_width, int *label_height,
*/
int *rho, int *theta,
int *visibility,
int *locked ,
int *preferred_angle ,
int *convergence_style),
void (*_fset_label_angle)(void *ptr, void *item, int rho, int theta),
void (*_fquery_label_pos)(void *ptr, void *item, int theta,
int *x, int *y, int *w, int *h));
void
OmUnregister(void *w);
void
OmProcessOverlap(void *zinc,
int width,
int height,
double scale);
/*
* Parameter data type which ease exchange of parameters between
* Radar Image toolkit and Om library
*/
#define OM_PARAM_END 0
#define OM_PARAM_INT 1
#define OM_PARAM_FLOAT 2
#define OM_PARAM_DOUBLE 3
#define OM_PARAM_STRING 4
typedef struct {
int type ; /* should be among OM_PARAM_ */
char name[50] ;
} OmParam ;
/*
* These are the generic overlap manager public functions used
* to set/get any parameters that the Om library allow to modify
* dynamically (tunable parameters)
*/
/* OmSetNParam
return 1 if ok , anythingelse if nok (non existing parameters ,
wrong type) */
int
OmSetNParam(char *name, /* parameter's name */
void *value);
/* OmGetNParam
return 1 if ok , anythingelse if nok (non existing parameters ,
wrong type)
*/
int
OmGetNParam(char *name, /* parameter's name */
void *ptvalue);
/* OmGetNParamList
return 1 and next index if remains to read, the current param
being written in current_param
return 0 if end of list and no param */
int
OmGetNParamList(OmParam *current_param, int *idx_next);
#endif /* _OverlapMan_h */
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