#ifndef MARKER_H
#define MARKER_H

#include "MotionCapturer.h"

/* basically converts local coord to world coord of a pt */

class Marker;

// keeps track of a link list of one's ancestral info
typedef struct Ancestry Ancestry;

// marker ptr + whether it should be drawn
typedef struct MarkerDrawn {
	Marker *marker;
	bool	b_draw;
} MarkerDrawn;

class Marker
{
public:
	char	name[LINESIZE];
	char	parent_name[LINESIZE];
	Ancestry *ancestors;		
	Node	*parent;		// last one in the last of ancestors
	double	offset[3];		// xyz offset from parent joint
	double	*trans;
	int		frame_cnt;
	Marker	*next;

	Marker(int in_frame_cnt);

	~Marker();

};

/* read a marker request file, alloc and init a link list of markers,
	headed by m_head 
*/
Status read_marker_request_file(char *filename, int f_cnt, Marker* &m_head);

// create an end effector marker and add it to the list of end effector marker list
void add_endsite_marker(Node *parent, Node *root, double local_pos[3], int f_cnt, Marker* &m_head);

// draw trace of one marker
void draw_marker(Marker *m, int begin_frame, int end_frame);

#endif