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IconLayer class manages a collection of WWIcon objects
for rendering and picking.IconLayer with an empty collection of Icons.
GLEventListener.init(GLAutoDrawable).
DrawContext.
line.
Position of the globe terrain with the ray starting
at origin in the given direction.
Position of the globe terrain with the ray starting
at origin in the given direction.
Extent intersects frustum.
line intersects this Extent.
Extent is intersected by plane.
Frustum.
Line.
Plane.
Vec4 point of the globe terrain with a line segment
defined between two points.
Vec4 point of the globe terrain with the a segment
defined between two points.
View will detect collisions with other objects,
such as the surface geometry.
Annotation is highlighted and should be drawn bigger - see setHighlightScale().
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