![]() A positive value of distance defines an offset in the direction which is normal to the curve in the sense of an anti-clockwise rotation through 90 degrees from the tangent vector T at the given point. distance may be positive, negative or zero. The distance of the offset curve from the basis curve. HISTORY New entity in IFC2x Attribute definitions # NOTE Entity adapted from offset_curve_2d defined in ISO 10303-42. The underlying curve shall be two-dimensional. Where T is the unit tangent vector to the basis curve C( u) at parameter value u, and d is distance. The offset curve 2d takes its parameterization from the basis curve. Care should be taken to ensure that the offset to a continuous curve does not become discontinuous. NOTE The offset curve 2d may differ in nature from the basis curve the offset of a non self- intersecting curve can be self-intersecting. In the case of a composite curve, the transition code between each segment shall be cont same gradient or cont same gradient same curvature. The underlying curve shall have a well-defined tangent direction at every point. This entity defines a simple plane-offset curve by offsetting by distance along the normal to basis curve in the plane of basis curve. NOTE Definition according to ISO/CD 10303-42:1992Īn offset curve 2d is a curve at a constant distance from a basis curve in two-dimensional space. Semantic definitions at the entity Entity definitionĪn IfcOffsetCurve2D is a curve defined by an offset in 2D space from its BasisCurve. ![]() Versetzte Kurve im zweidimensionalen Raum (2D) ![]() IfcOffsetCurve2D IfcOffsetCurve2D Natural language names
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |