1. Cylinder Shape

A cylinder shape represents a body as a circular cylinder or pipe. Use it for columns, spars, risers, pipes, and other rotationally symmetric members where a cuboid is too coarse but a full graphics file is unnecessary.

1.1. Description

The cylinder is centred on its local axis and defined by a length and two diameters. An inner diameter of zero gives a solid cylinder; a non-zero inner diameter smaller than the outer diameter gives a hollow pipe (annular cross section). The shape is placed in the model by the shared pose fields inherited from the generic shape: position (X, Y, Z) locates the local origin and rotation (Rot X, Rot Y, Rot Z) orients the cylinder axis, both relative to the owning body’s coordinate system.

1.2. Fields

  • X, Y, Z: Position of the shape origin relative to the body (m).

  • Rot X, Rot Y, Rot Z: Rotation of the shape about its local axes (deg).

  • Length: Length of the cylinder along its local axis (m).

  • Outer Diameter: Outer diameter of the cylinder (m).

  • Inner Diameter: Inner diameter (m). Leave at 0 for a solid cylinder; set a value smaller than the outer diameter for a hollow pipe.