AnnotationControl is a class responsible for annotation movements. Usually, you don't need to use this class directly- to create custom annotations it's better to override the descendant [page:Annotation Annotation] class.
container - the ID of an HTML-element or the HTML-element itself which will contain the annotation.
See the base [page:Object3D] class for common properties.
The container ID or HTML-element.
Vector with projected annotation coordinates.
Annotaion update callback. Input params: projected X and Y coordinates, annotation visibility flag.
Used to check whether this or derived classes are annotation controls.
You should not change this, as it is used internally for optimization.
See the base [page:Object3D] class for common methods.
Returns a clone of this AnnotationControl object and any descendants.
Update annotation controller position and visibility, execute [page:AnnotationControl.updatedCallback updatedCallback] if it is provided. This method is used internally by [page:WebGLRenderer] class.
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