Generation of Model Objects

Generating model objects is done in one of three ways, depending on the type of object to create:

• Create a curve in an existing surface, defining the geometry of the object. Seams, butts, hull curves and shell profiles are modelled this way.

• Collect a number of existing model objects. This is true for developed plates and curved panels. However, curved panel with their shell plates may also be generated by selection of a matrix of seams and butts.

• Replace an existing model object with a number of new ones, by splitting it into several smaller pieces. This is the case for shell stiffeners.

A curve can be modelled in several different ways:

• Intersecting a surface with a plane.

• Intersecting a surface with a cylinder.

• Setting a curve parallel to another one (including the trace of a shell profile).

• Combining two other curves.

• Creating a curve from an existing curve, hull curve or lines fairing curve. Curves defined in an external surface system may also be used.