Definition according to ISO/CD 10303-42:1992
The reparametrised composite curve segment is a special type of composite curve segment which provides the capability to re-define its parametric length without changing its geometry. Entity adapted from reparametrised_composite_curve_segment in ISO 10303-42. New entity in IFC4
If t~0~ ≤ t ≤ t~1~ is the parameter range of ParentCurve, the new parameter . for the reparametrised composite curve segment is given by the equation:
if SameSense = TRUE;
or by the equation:Figure 8.9.3.56.A if SameSense = FALSE;Figure 8.9.3.56.B
Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.
The inverse attribute LayerAssignments has been added. The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed.
Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.
The inverse attribute StyledByItem has been added.
Connectivity between the continuous segments is not enforced per se to be tangential. Setting "TangentialContinuity" to True means that the current segment shall continue with tangential continuity to the previous one.
The space dimensionality of this abstract class, handled by a function specific for concrete subtypes which returns the dimensionality of the ParentCurve attribute (defined on both subtypes).
An indicator of whether or not the sense of the segment agrees with, or opposes, that of the parent curve. If SameSense is false, the point with highest parameter value is taken as the first point of the segment.
If the datatype of ParentCurve is IfcTrimmedCurve, the value of SameSense overrides the value of IfcTrimmedCurve.SenseAgreement
if SameSense = TRUE; or by the equation:
if SameSense = FALSE;