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<?xml version="1.0" encoding="UTF-8" ?>
<class name="XRInterfaceExtension" inherits="XRInterface" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
<brief_description>
Base class for XR interface extensions (plugins).
</brief_description>
<description>
External XR interface plugins should inherit from this class.
</description>
<tutorials>
</tutorials>
<methods>
<method name="_end_frame" qualifiers="virtual">
<return type="void" />
<description>
Called if interface is active and queues have been submitted.
</description>
</method>
<method name="_get_anchor_detection_is_enabled" qualifiers="virtual const">
<return type="bool" />
<description>
Return [code]true[/code] if anchor detection is enabled for this interface.
</description>
</method>
<method name="_get_camera_feed_id" qualifiers="virtual const">
<return type="int" />
<description>
Returns the camera feed id for the [CameraFeed] registered with the [CameraServer] that should be presented as the background on an AR capable device (if applicable).
</description>
</method>
<method name="_get_camera_transform" qualifiers="virtual">
<return type="Transform3D" />
<description>
Returns the [Transform3D] that positions the [XRCamera3D] in the world.
</description>
</method>
<method name="_get_capabilities" qualifiers="virtual const">
<return type="int" />
<description>
Returns the capabilities of this interface.
</description>
</method>
<method name="_get_color_texture" qualifiers="virtual">
<return type="RID" />
<description>
Return color texture into which to render (if applicable).
</description>
</method>
<method name="_get_depth_texture" qualifiers="virtual">
<return type="RID" />
<description>
Return depth texture into which to render (if applicable).
</description>
</method>
<method name="_get_name" qualifiers="virtual const">
<return type="StringName" />
<description>
Returns the name of this interface.
</description>
</method>
<method name="_get_play_area" qualifiers="virtual const">
<return type="PackedVector3Array" />
<description>
Returns an [PackedVector3Array] that denotes the play areas boundaries (if applicable).
</description>
</method>
<method name="_get_play_area_mode" qualifiers="virtual const">
<return type="int" />
<description>
Returns the [enum XRInterface.PlayAreaMode] that sets up our play area.
</description>
</method>
<method name="_get_projection_for_view" qualifiers="virtual">
<return type="PackedFloat64Array" />
<param index="0" name="view" type="int" />
<param index="1" name="aspect" type="float" />
<param index="2" name="z_near" type="float" />
<param index="3" name="z_far" type="float" />
<description>
Returns the projection matrix for the given view as a [PackedFloat64Array].
</description>
</method>
<method name="_get_render_target_size" qualifiers="virtual">
<return type="Vector2" />
<description>
Returns the size of our render target for this interface, this overrides the size of the [Viewport] marked as the xr viewport.
</description>
</method>
<method name="_get_suggested_pose_names" qualifiers="virtual const">
<return type="PackedStringArray" />
<param index="0" name="tracker_name" type="StringName" />
<description>
Returns a [PackedStringArray] with pose names configured by this interface. Note that user configuration can override this list.
</description>
</method>
<method name="_get_suggested_tracker_names" qualifiers="virtual const">
<return type="PackedStringArray" />
<description>
Returns a [PackedStringArray] with tracker names configured by this interface. Note that user configuration can override this list.
</description>
</method>
<method name="_get_tracking_status" qualifiers="virtual const">
<return type="int" />
<description>
Returns a [enum XRInterface.TrackingStatus] specifying the current status of our tracking.
</description>
</method>
<method name="_get_transform_for_view" qualifiers="virtual">
<return type="Transform3D" />
<param index="0" name="view" type="int" />
<param index="1" name="cam_transform" type="Transform3D" />
<description>
Returns a [Transform3D] for a given view.
</description>
</method>
<method name="_get_velocity_texture" qualifiers="virtual">
<return type="RID" />
<description>
Return velocity texture into which to render (if applicable).
</description>
</method>
<method name="_get_view_count" qualifiers="virtual">
<return type="int" />
<description>
Returns the number of views this interface requires, 1 for mono, 2 for stereoscopic.
</description>
</method>
<method name="_get_vrs_texture" qualifiers="virtual">
<return type="RID" />
<description>
</description>
</method>
<method name="_initialize" qualifiers="virtual">
<return type="bool" />
<description>
Initializes the interface, returns [code]true[/code] on success.
</description>
</method>
<method name="_is_initialized" qualifiers="virtual const">
<return type="bool" />
<description>
Returns [code]true[/code] if this interface has been initialized.
</description>
</method>
<method name="_notification" qualifiers="virtual">
<return type="void" />
<param index="0" name="what" type="int" />
<description>
Informs the interface of an applicable system notification.
</description>
</method>
<method name="_post_draw_viewport" qualifiers="virtual">
<return type="void" />
<param index="0" name="render_target" type="RID" />
<param index="1" name="screen_rect" type="Rect2" />
<description>
Called after the XR [Viewport] draw logic has completed.
</description>
</method>
<method name="_pre_draw_viewport" qualifiers="virtual">
<return type="bool" />
<param index="0" name="render_target" type="RID" />
<description>
Called if this is our primary [XRInterfaceExtension] before we start processing a [Viewport] for every active XR [Viewport], returns [code]true[/code] if that viewport should be rendered. An XR interface may return [code]false[/code] if the user has taken off their headset and we can pause rendering.
</description>
</method>
<method name="_pre_render" qualifiers="virtual">
<return type="void" />
<description>
Called if this [XRInterfaceExtension] is active before rendering starts, most XR interfaces will sync tracking at this point in time.
</description>
</method>
<method name="_process" qualifiers="virtual">
<return type="void" />
<description>
Called if this [XRInterfaceExtension] is active before our physics and game process is called. most XR interfaces will update its [XRPositionalTracker]s at this point in time.
</description>
</method>
<method name="_set_anchor_detection_is_enabled" qualifiers="virtual">
<return type="void" />
<param index="0" name="enabled" type="bool" />
<description>
Enables anchor detection on this interface if supported.
</description>
</method>
<method name="_set_play_area_mode" qualifiers="virtual const">
<return type="bool" />
<param index="0" name="mode" type="int" />
<description>
Set the play area mode for this interface.
</description>
</method>
<method name="_supports_play_area_mode" qualifiers="virtual const">
<return type="bool" />
<param index="0" name="mode" type="int" enum="XRInterface.PlayAreaMode" />
<description>
Returns [code]true[/code] if this interface supports this play area mode.
</description>
</method>
<method name="_trigger_haptic_pulse" qualifiers="virtual">
<return type="void" />
<param index="0" name="action_name" type="String" />
<param index="1" name="tracker_name" type="StringName" />
<param index="2" name="frequency" type="float" />
<param index="3" name="amplitude" type="float" />
<param index="4" name="duration_sec" type="float" />
<param index="5" name="delay_sec" type="float" />
<description>
Triggers a haptic pulse to be emitted on the specified tracker.
</description>
</method>
<method name="_uninitialize" qualifiers="virtual">
<return type="void" />
<description>
Uninitialize the interface.
</description>
</method>
<method name="add_blit">
<return type="void" />
<param index="0" name="render_target" type="RID" />
<param index="1" name="src_rect" type="Rect2" />
<param index="2" name="dst_rect" type="Rect2i" />
<param index="3" name="use_layer" type="bool" />
<param index="4" name="layer" type="int" />
<param index="5" name="apply_lens_distortion" type="bool" />
<param index="6" name="eye_center" type="Vector2" />
<param index="7" name="k1" type="float" />
<param index="8" name="k2" type="float" />
<param index="9" name="upscale" type="float" />
<param index="10" name="aspect_ratio" type="float" />
<description>
Blits our render results to screen optionally applying lens distortion. This can only be called while processing [code]_commit_views[/code].
</description>
</method>
<method name="get_color_texture">
<return type="RID" />
<description>
</description>
</method>
<method name="get_depth_texture">
<return type="RID" />
<description>
</description>
</method>
<method name="get_render_target_texture">
<return type="RID" />
<param index="0" name="render_target" type="RID" />
<description>
Returns a valid [RID] for a texture to which we should render the current frame if supported by the interface.
</description>
</method>
<method name="get_velocity_texture">
<return type="RID" />
<description>
</description>
</method>
</methods>
</class>
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