Shapes types

• Axis — A line in space with a direction: an origin and a unit direction, such as the axis of a cylinder.
• Bounding Box — A box aligned with the axes, given by its two opposite corners.
• Curve — A curve in space, kept as a chain of short straight pieces.
• Frame — A coordinate system: an origin and three axes at right angles.
• Plane — A flat plane in space, with an origin, a normal and axes of its own.
• Point — A position in space: x, y and z in mm.
• Profile — A closed flat shape in a plane, such as a circle or a rectangle.
• Solid — A body.