DG Kernel Documentation


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Skip Navigation LinksHome Page > Deprecated > Deprecated Geometry > Pipes Search Documentation


Pipes

Pipe sections is a type of object which is built around a 3D curve (Central Curve). They are similar to Surface Of Revolution objects. The difference is that in SOR the central curve is a straight line along the local z-axis. Pipes on the other hand have constant profile along an arbitrary shaped central curve.

A Pipe object can represent a geometric pipe with solid walls or external surface of a pipe. When ends of pipe are covered (use IBoundary interface queried from IPipeSection) pipe represents a curved solid bar.

Pipes can be programmed using IPipeSection interface.

Pipes are entities and hence implement ISection and ISection2

Properties

Name Type Description Interface
CentralCurve ICurve* Central Curve. Reference to a curve created separately from the pipe. Normally the curve implements more specific interface like ICurveFreeForm, which can be queried from ICurve. See also Arc Spline Curves and notes below. IPipeSection
Diameter double Outer diameter of the pipe IPipeSection
InnerDiameter double Inner diameter of the pipe IPipeSection
InternalSurface bool Determines whether cylindrical surface of inner patch of the pipe is part of the object IPipeSection
RenderType int Determines whether meshed surface is created for rendering. Valid values: 0 - to create mesh for faster rendering, 1 - to use direct drawing to reduce memory consumption IPipeSection
CoverEdge0 bool Inherited form Entity. Determines whether disk at the first end is part of the object IBoundary
CoverEdge1 bool Inherited form Entity. Determines whether disk at the last end is part of the object IBoundary

Pipe objects can be created with a call to Create or Create2 method of IDIObjectGenerator interface with parameter eType set to eObjTypePipeSection member of EObjectType enumeration. Query IPipeSection  from the returned IUnknown interface.

Before using a pipe object the CentralCurve property must be set to ICurve implemented by a curve object. The curve can be created with another call to Create(2) of IDIObjectGenerator interface with parameter eType set to eObjTypeFreeFormCurve or eObjTypeArcSplineCurve member of EObjectType enumeration.

See also: Pipes sample,