Spatial

Inherits: Node < Object

Inherited By: ARVRAnchor, ARVRController, ARVROrigin, AudioStreamPlayer3D, BoneAttachment, Camera, CollisionObject, CollisionPolygon, CollisionShape, GridMap, Joint, Listener, Navigation, NavigationMeshInstance, Path, PathFollow, Position3D, ProximityGroup, RayCast, RemoteTransform, Skeleton, SpringArm, VehicleWheel, VisibilityNotifier, VisualInstance

Category: Core

Brief Description

Most basic 3D game object, parent of all 3D related nodes.

Properties

Methods

Signals

• visibility_changed ( )

Emitted when node visibility changes.

Constants

• NOTIFICATION_TRANSFORM_CHANGED = 29 — Spatial nodes receives this notification when their global transform changes. This means that either the current or a parent node changed its transform.

In order for NOTIFICATION_TRANSFORM_CHANGED to work, users first need to ask for it, with set_notify_transform.

• NOTIFICATION_ENTER_WORLD = 41 — Spatial nodes receives this notification when they are registered to new World resource.
• NOTIFICATION_EXIT_WORLD = 42 — Spatial nodes receives this notification when they are unregistered from current World resource.
• NOTIFICATION_VISIBILITY_CHANGED = 43 — Spatial nodes receives this notification when their visibility changes.

Description

Most basic 3D game object, with a 3D Transform and visibility settings. All other 3D game objects inherit from Spatial. Use Spatial as a parent node to move, scale, rotate and show/hide children in a 3D project.

Affine operations (rotate, scale, translate) happen in parent’s local coordinate system, unless the Spatial object is set as top level. Affine operations in this coordinate system correspond to direct affine operations on the Spatial’s transform. The word local below refers to this coordinate system. The coordinate system that is attached to the Spatial object itself is referred to as object-local coordinate system.

Tutorials

• Introduction to 3D

Property Descriptions

• SpatialGizmo gizmo

The SpatialGizmo for this node. Used for example in EditorSpatialGizmo as custom visualization and editing handles in Editor.

• Transform global_transform

World space (global) Transform of this node.

• Vector3 rotation

Rotation part of the local transformation in radians, specified in terms of YXZ-Euler angles in the format (X-angle, Y-angle, Z-angle).

Note that in the mathematical sense, rotation is a matrix and not a vector. The three Euler angles, which are the three independent parameters of the Euler-angle parametrization of the rotation matrix, are stored in a Vector3 data structure not because the rotation is a vector, but only because Vector3 exists as a convenient data-structure to store 3 floating point numbers. Therefore, applying affine operations on the rotation “vector” is not meaningful.

• Vector3 rotation_degrees

Rotation part of the local transformation in degrees, specified in terms of YXZ-Euler angles in the format (X-angle, Y-angle, Z-angle).

• Vector3 scale

Scale part of the local transformation.

• Transform transform

Local space Transform of this node, with respect to the parent node.

• Vector3 translation

Local translation of this node.

• bool visible

If true, this node is drawn. Default value: true.

Method Descriptions

• void force_update_transform ( )

• Spatial get_parent_spatial ( ) const

Returns the parent Spatial, or an empty Object if no parent exists or parent is not of type Spatial.

• World get_world ( ) const

Returns the current World resource this Spatial node is registered to.

• void global_rotate ( Vector3 axis, float angle )

Rotates the global (world) transformation around axis, a unit Vector3, by specified angle in radians. The rotation axis is in global coordinate system.

• void global_scale ( Vector3 scale )

• void global_translate ( Vector3 offset )

Moves the global (world) transformation by Vector3 offset. The offset is in global coordinate system.

• void hide ( )

Disables rendering of this node. Changes visible to false.

• bool is_local_transform_notification_enabled ( ) const

Returns whether node notifies about its local transformation changes. Spatial will not propagate this by default.

• bool is_scale_disabled ( ) const

• bool is_set_as_toplevel ( ) const

Returns whether this node is set as Toplevel, that is whether it ignores its parent nodes transformations.

• bool is_transform_notification_enabled ( ) const

Returns whether the node notifies about its global and local transformation changes. Spatial will not propagate this by default.

• bool is_visible_in_tree ( ) const

Returns whether the node is visible, taking into consideration that its parents visibility.

• void look_at ( Vector3 target, Vector3 up )

Rotates itself so that the local -Z axis points towards the target position.

The transform will first be rotated around the given up vector, and then fully aligned to the target by a further rotation around an axis perpendicular to both the target and up vectors.

Operations take place in global space.

• void look_at_from_position ( Vector3 position, Vector3 target, Vector3 up )

Moves the node to the specified position, and then rotates itself to point toward the target as per look_at. Operations take place in global space.

• void orthonormalize ( )

Resets this node’s transformations (like scale, skew and taper) preserving its rotation and translation by performing Gram-Schmidt orthonormalization on this node’s Transform.

• void rotate ( Vector3 axis, float angle )

Rotates the local transformation around axis, a unit Vector3, by specified angle in radians.

• void rotate_object_local ( Vector3 axis, float angle )

Rotates the local transformation around axis, a unit Vector3, by specified angle in radians. The rotation axis is in object-local coordinate system.

• void rotate_x ( float angle )

Rotates the local transformation around the X axis by angle in radians

• void rotate_y ( float angle )

Rotates the local transformation around the Y axis by angle in radians.

• void rotate_z ( float angle )

Rotates the local transformation around the Z axis by angle in radians.

• void scale_object_local ( Vector3 scale )

Scales the local transformation by given 3D scale factors in object-local coordinate system.

• void set_as_toplevel ( bool enable )

Makes the node ignore its parents transformations. Node transformations are only in global space.

• void set_disable_scale ( bool disable )

• void set_identity ( )

Reset all transformations for this node. Set its Transform to identity matrix.

• void set_ignore_transform_notification ( bool enabled )

Set whether the node ignores notification that its transformation (global or local) changed.

• void set_notify_local_transform ( bool enable )

Set whether the node notifies about its local transformation changes. Spatial will not propagate this by default.

• void set_notify_transform ( bool enable )

Set whether the node notifies about its global and local transformation changes. Spatial will not propagate this by default.

• void show ( )

Enables rendering of this node. Changes visible to true.

• Vector3 to_global ( Vector3 local_point ) const

Transforms Vector3 “local_point” from this node’s local space to world space.

• Vector3 to_local ( Vector3 global_point ) const

Transforms Vector3 “global_point” from world space to this node’s local space.

• void translate ( Vector3 offset )

Changes the node’s position by given offset Vector3.

Note that the translation offset is affected by the node’s scale, so if scaled by e.g. (10, 1, 1), a translation by an offset of (2, 0, 0) would actually add 20 (2 * 10) to the X coordinate.

• void translate_object_local ( Vector3 offset )

• void update_gizmo ( )

Updates the SpatialGizmo of this node.