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/**************************************************************************/
/* openxr_hand_tracking_extension.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef OPENXR_HAND_TRACKING_EXTENSION_H
#define OPENXR_HAND_TRACKING_EXTENSION_H
#include "openxr_extension_wrapper.h"
#include "../util.h"
#define MAX_OPENXR_TRACKED_HANDS 2
class OpenXRHandTrackingExtension : public OpenXRExtensionWrapper {
public:
struct HandTracker {
bool is_initialized = false;
XrHandJointsMotionRangeEXT motion_range = XR_HAND_JOINTS_MOTION_RANGE_UNOBSTRUCTED_EXT;
XrHandTrackerEXT hand_tracker = XR_NULL_HANDLE;
XrHandJointLocationEXT joint_locations[XR_HAND_JOINT_COUNT_EXT];
XrHandJointVelocityEXT joint_velocities[XR_HAND_JOINT_COUNT_EXT];
XrHandTrackingAimStateFB aimState;
XrHandJointVelocitiesEXT velocities;
XrHandJointLocationsEXT locations;
};
static OpenXRHandTrackingExtension *get_singleton();
OpenXRHandTrackingExtension();
virtual ~OpenXRHandTrackingExtension() override;
virtual HashMap<String, bool *> get_requested_extensions() override;
virtual void on_instance_created(const XrInstance p_instance) override;
virtual void on_instance_destroyed() override;
virtual void on_session_destroyed() override;
virtual void *set_system_properties_and_get_next_pointer(void *p_next_pointer) override;
virtual void on_state_ready() override;
virtual void on_process() override;
virtual void on_state_stopping() override;
bool get_active();
const HandTracker *get_hand_tracker(uint32_t p_hand) const;
XrHandJointsMotionRangeEXT get_motion_range(uint32_t p_hand) const;
void set_motion_range(uint32_t p_hand, XrHandJointsMotionRangeEXT p_motion_range);
private:
static OpenXRHandTrackingExtension *singleton;
// state
XrSystemHandTrackingPropertiesEXT handTrackingSystemProperties;
HandTracker hand_trackers[MAX_OPENXR_TRACKED_HANDS]; // Fixed for left and right hand
// related extensions
bool hand_tracking_ext = false;
bool hand_motion_range_ext = false;
bool hand_tracking_aim_state_ext = false;
// functions
void cleanup_hand_tracking();
// OpenXR API call wrappers
EXT_PROTO_XRRESULT_FUNC3(xrCreateHandTrackerEXT, (XrSession), p_session, (const XrHandTrackerCreateInfoEXT *), p_createInfo, (XrHandTrackerEXT *), p_handTracker)
EXT_PROTO_XRRESULT_FUNC1(xrDestroyHandTrackerEXT, (XrHandTrackerEXT), p_handTracker)
EXT_PROTO_XRRESULT_FUNC3(xrLocateHandJointsEXT, (XrHandTrackerEXT), p_handTracker, (const XrHandJointsLocateInfoEXT *), p_locateInfo, (XrHandJointLocationsEXT *), p_locations)
};
#endif // OPENXR_HAND_TRACKING_EXTENSION_H
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