GraphicPrimitive -- the class of all graphic primitives

Types of GraphicPrimitive :

• Circle -- the class of a circle in a 2D space
• Point2D -- the class of a point in a 2D space
• Point3D -- the class of a point in a 3D space
• Polygon2D -- the class of a polygon in a 2D space
• Polygon3D -- the class of a polygon in a 3D space
• Segment2D -- the class of a line segment in a 2D space
• Segment3D -- the class of a line segment in a 3D space
• Sphere -- the class of a sphere in a 3D space
• TextTag -- the class of a text tag

For the programmer

The object GraphicPrimitive is a type, with ancestor classes BasicList < Thing.