Custom gizmo for editing Spatial objects. Custom gizmo that is used for providing custom visualization and editing (handles) for 3D Spatial objects. See [EditorSpatialGizmoPlugin] for more information. Adds the specified [code]segments[/code] to the gizmo's collision shape for picking. Call this function during [method redraw]. Adds collision triangles to the gizmo for picking. A [TriangleMesh] can be generated from a regular [Mesh] too. Call this function during [method redraw]. Adds a list of handles (points) which can be used to deform the object being edited. There are virtual functions which will be called upon editing of these handles. Call this function during [method redraw]. Adds lines to the gizmo (as sets of 2 points), with a given material. The lines are used for visualizing the gizmo. Call this function during [method redraw]. Adds a mesh to the gizmo with the specified [code]billboard[/code] state, [code]skeleton[/code] and [code]material[/code]. If [code]billboard[/code] is [code]true[/code], the mesh will rotate to always face the camera. Call this function during [method redraw]. Adds an unscaled billboard for visualization. Call this function during [method redraw]. Removes everything in the gizmo including meshes, collisions and handles. Commit a handle being edited (handles must have been previously added by [method add_handles]). If the [code]cancel[/code] parameter is [code]true[/code], an option to restore the edited value to the original is provided. Gets the name of an edited handle (handles must have been previously added by [method add_handles]). Handles can be named for reference to the user when editing. Gets actual value of a handle. This value can be anything and used for eventually undoing the motion when calling [method commit_handle]. Returns the [EditorSpatialGizmoPlugin] that owns this gizmo. It's useful to retrieve materials using [method EditorSpatialGizmoPlugin.get_material]. Returns the Spatial node associated with this gizmo. Returns [code]true[/code] if the handle at index [code]index[/code] is highlighted by being hovered with the mouse. This function is called when the [Spatial] this gizmo refers to changes (the [method Spatial.update_gizmo] is called). This function is used when the user drags a gizmo handle (previously added with [method add_handles]) in screen coordinates. The [Camera] is also provided so screen coordinates can be converted to raycasts. Sets the gizmo's hidden state. If [code]true[/code], the gizmo will be hidden. If [code]false[/code], it will be shown. Sets the reference [Spatial] node for the gizmo. [code]node[/code] must inherit from [Spatial].