m_relation_history.cpp File Reference

Small utility for keeping track of the history of an xrt_space_relation, ie. More...

#include "m_relation_history.h"
#include "math/m_api.h"
#include "math/m_predict.h"
#include "math/m_vec3.h"
#include "os/os_time.h"
#include "util/u_logging.h"
#include "util/u_trace_marker.h"
#include "xrt/xrt_defines.h"
#include "os/os_threading.h"
#include "util/u_template_historybuf.hpp"
#include <memory>
#include <algorithm>
#include <cstring>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <assert.h>
#include <mutex>

Include dependency graph for m_relation_history.cpp:

Data Structures
struct	relation_history_entry
struct	m_relation_history

Functions
void	m_relation_history_create (struct m_relation_history **rh_ptr)
bool	m_relation_history_push (struct m_relation_history *rh, struct xrt_space_relation const *in_relation, uint64_t timestamp)
enum m_relation_history_result	m_relation_history_get (const struct m_relation_history *rh, uint64_t at_timestamp_ns, struct xrt_space_relation *out_relation)
bool	m_relation_history_estimate_motion (struct m_relation_history *rh, const struct xrt_space_relation *in_relation, uint64_t timestamp, struct xrt_space_relation *out_relation)
bool	m_relation_history_get_latest (const struct m_relation_history *rh, uint64_t *out_time_ns, struct xrt_space_relation *out_relation)
uint32_t	m_relation_history_get_size (const struct m_relation_history *rh)
void	m_relation_history_clear (struct m_relation_history *rh)
void	m_relation_history_destroy (struct m_relation_history **rh_ptr)

Variables
static constexpr size_t	BufLen = 4096

Detailed Description

Small utility for keeping track of the history of an xrt_space_relation, ie.

for knowing where a HMD or controller was in the past.

Author

Moses Turner moses.nosp@m.@col.nosp@m.labor.nosp@m.a.co.nosp@m.m

Rylie Pavlik rylie.nosp@m..pav.nosp@m.lik@c.nosp@m.olla.nosp@m.bora..nosp@m.com

Korcan Hussein korca.nosp@m.n.hu.nosp@m.ssein.nosp@m.@col.nosp@m.labor.nosp@m.a.co.nosp@m.m

Function Documentation

m_relation_history_get()

enum m_relation_history_result m_relation_history_get	(	const struct m_relation_history *	rh,
		uint64_t	at_timestamp_ns,
		struct xrt_space_relation *	out_relation
	)

Todo:

Does interpolating the velocities make any sense?

Referenced by Device::get_pose().