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. 1.3. See Also Block Shape Curved Plate Shape Geometric Shape