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# SPDX-License-Identifier: GPL-2.0-or-later
import bpy
from bpy.types import (
PropertyGroup,
)
from bpy.app.handlers import persistent
### Landmarks.
@persistent
def vr_ensure_default_landmark(context: bpy.context):
# Ensure there's a default landmark (scene camera by default).
landmarks = bpy.context.scene.vr_landmarks
if not landmarks:
landmarks.add()
landmarks[0].type = 'SCENE_CAMERA'
def vr_landmark_active_type_update(self, context):
wm = context.window_manager
session_settings = wm.xr_session_settings
landmark_active = VRLandmark.get_active_landmark(context)
# Update session's base pose type to the matching type.
if landmark_active.type == 'SCENE_CAMERA':
session_settings.base_pose_type = 'SCENE_CAMERA'
elif landmark_active.type == 'OBJECT':
session_settings.base_pose_type = 'OBJECT'
elif landmark_active.type == 'CUSTOM':
session_settings.base_pose_type = 'CUSTOM'
def vr_landmark_active_base_pose_object_update(self, context):
session_settings = context.window_manager.xr_session_settings
landmark_active = VRLandmark.get_active_landmark(context)
# Update the anchor object to the (new) camera of this landmark.
session_settings.base_pose_object = landmark_active.base_pose_object
def vr_landmark_active_base_pose_location_update(self, context):
session_settings = context.window_manager.xr_session_settings
landmark_active = VRLandmark.get_active_landmark(context)
session_settings.base_pose_location = landmark_active.base_pose_location
def vr_landmark_active_base_pose_angle_update(self, context):
session_settings = context.window_manager.xr_session_settings
landmark_active = VRLandmark.get_active_landmark(context)
session_settings.base_pose_angle = landmark_active.base_pose_angle
def vr_landmark_active_base_scale_update(self, context):
session_settings = context.window_manager.xr_session_settings
landmark_active = VRLandmark.get_active_landmark(context)
session_settings.base_scale = landmark_active.base_scale
def vr_landmark_type_update(self, context):
landmark_selected = VRLandmark.get_selected_landmark(context)
landmark_active = VRLandmark.get_active_landmark(context)
# Don't allow non-trivial base scale for scene camera landmarks.
if landmark_selected.type == 'SCENE_CAMERA':
landmark_selected.base_scale = 1.0
# Only update session settings data if the changed landmark is actually
# the active one.
if landmark_active == landmark_selected:
vr_landmark_active_type_update(self, context)
def vr_landmark_base_pose_object_update(self, context):
landmark_selected = VRLandmark.get_selected_landmark(context)
landmark_active = VRLandmark.get_active_landmark(context)
# Only update session settings data if the changed landmark is actually
# the active one.
if landmark_active == landmark_selected:
vr_landmark_active_base_pose_object_update(self, context)
def vr_landmark_base_pose_location_update(self, context):
landmark_selected = VRLandmark.get_selected_landmark(context)
landmark_active = VRLandmark.get_active_landmark(context)
# Only update session settings data if the changed landmark is actually
# the active one.
if landmark_active == landmark_selected:
vr_landmark_active_base_pose_location_update(self, context)
def vr_landmark_base_pose_angle_update(self, context):
landmark_selected = VRLandmark.get_selected_landmark(context)
landmark_active = VRLandmark.get_active_landmark(context)
# Only update session settings data if the changed landmark is actually
# the active one.
if landmark_active == landmark_selected:
vr_landmark_active_base_pose_angle_update(self, context)
def vr_landmark_base_scale_update(self, context):
landmark_selected = VRLandmark.get_selected_landmark(context)
landmark_active = VRLandmark.get_active_landmark(context)
# Only update session settings data if the changed landmark is actually
# the active one.
if landmark_active == landmark_selected:
vr_landmark_active_base_scale_update(self, context)
def vr_landmark_active_update(self, context):
wm = context.window_manager
vr_landmark_active_type_update(self, context)
vr_landmark_active_base_pose_object_update(self, context)
vr_landmark_active_base_pose_location_update(self, context)
vr_landmark_active_base_pose_angle_update(self, context)
vr_landmark_active_base_scale_update(self, context)
if wm.xr_session_state:
wm.xr_session_state.reset_to_base_pose(context)
class VRLandmark(PropertyGroup):
name: bpy.props.StringProperty(
name="VR Landmark",
default="Landmark"
)
type: bpy.props.EnumProperty(
name="Type",
items=[
('SCENE_CAMERA', "Scene Camera",
"Use scene's currently active camera to define the VR view base "
"location and rotation"),
('OBJECT', "Custom Object",
"Use an existing object to define the VR view base location and "
"rotation"),
('CUSTOM', "Custom Pose",
"Allow a manually defined position and rotation to be used as "
"the VR view base pose"),
],
default='SCENE_CAMERA',
update=vr_landmark_type_update,
)
base_pose_object: bpy.props.PointerProperty(
name="Object",
type=bpy.types.Object,
update=vr_landmark_base_pose_object_update,
)
base_pose_location: bpy.props.FloatVectorProperty(
name="Base Pose Location",
subtype='TRANSLATION',
update=vr_landmark_base_pose_location_update,
)
base_pose_angle: bpy.props.FloatProperty(
name="Base Pose Angle",
subtype='ANGLE',
update=vr_landmark_base_pose_angle_update,
)
base_scale: bpy.props.FloatProperty(
name="Base Scale",
description="Viewer reference scale associated with this landmark",
default=1.0,
min=0.000001,
update=vr_landmark_base_scale_update,
)
@staticmethod
def get_selected_landmark(context):
scene = context.scene
landmarks = scene.vr_landmarks
return (
None if (len(landmarks) <
1) else landmarks[scene.vr_landmarks_selected]
)
@staticmethod
def get_active_landmark(context):
scene = context.scene
landmarks = scene.vr_landmarks
return (
None if (len(landmarks) <
1) else landmarks[scene.vr_landmarks_active]
)
classes = (
VRLandmark,
)
def register():
for cls in classes:
bpy.utils.register_class(cls)
bpy.types.Scene.vr_landmarks = bpy.props.CollectionProperty(
name="Landmark",
type=VRLandmark,
)
bpy.types.Scene.vr_landmarks_selected = bpy.props.IntProperty(
name="Selected Landmark"
)
bpy.types.Scene.vr_landmarks_active = bpy.props.IntProperty(
update=vr_landmark_active_update,
)
bpy.app.handlers.load_post.append(vr_ensure_default_landmark)
def unregister():
for cls in classes:
bpy.utils.unregister_class(cls)
del bpy.types.Scene.vr_landmarks
del bpy.types.Scene.vr_landmarks_selected
del bpy.types.Scene.vr_landmarks_active
bpy.app.handlers.load_post.remove(vr_ensure_default_landmark)
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