程序包 org.sikongsphere.ifc.model.schema.resource.geometry.entity

类概要

类	说明
Ifc2DCompositeCurve	An Ifc2DCompositeCurve is an IfcCompositeCurve that is defined within the coordinate space of an IfcPlane.
IfcAxis1Placement	The direction and location in three dimensional space of a single axis.
IfcAxis2Placement2D	IfcAxis2Placement2D
IfcAxis2Placement3D	The location and orientation in three dimensional space of three mutually perpendicular axes.
IfcBezierCurve	This is a special type of curve which can be represented as a type of B-spline curve in which the knots are evenly spaced and have high multiplicities.
IfcBoundedCurve	A bounded curve is a curve of finite arc length with identifiable end points.
IfcBoundedSurface	A bounded surface is a surface of finite area with identifiable boundaries.
IfcBSplineCurve	A B-spline curve is a piecewise parametric polynominal or rational curve described in terms of control points and basis functions.
IfcCartesianPoint	A point defined by its coordinates in a two or three dimensional rectangular Cartesian coordinate system, or in a two dimensional parameter space.
IfcCartesianTransformationOperator	A Cartesian transformation operator defines a geometric transformation composed of translation, rotation, mirroring and uniform scaling.
IfcCartesianTransformationOperator2D	A Cartesian transformation operator 2d defines a geometric transformation in two-dimensional space composed of translation, rotation, mirroring and uniform scaling.
IfcCartesianTransformationOperator2DnonUniform	A Cartesian transformation operator 2d non uniform defines a geometric transformation in two-dimensional space composed of translation, rotation, mirroring and non uniform scaling.
IfcCartesianTransformationOperator3D	A Cartesian transformation operator 3d defines a geometric transformation in three-dimensional space composed of translation, rotation, mirroring and uniform scaling.
IfcCartesianTransformationOperator3DnonUniform	A Cartesian transformation operator 3d non uniform defines a geometric transformation in three-dimensional space composed of translation, rotation, mirroring and non uniform scaling.
IfcCircle	An IfcCircle is defined by a radius and the location and orientation of the circle.
IfcCompositeCurve	A composite curve (IfcCompositeCurve) is a collection of curves joined end-to-end.
IfcCompositeCurveSegment	A composite curve segment (IfcCompositeCurveSegment) is a bounded curve together with transition information which is used to construct a composite curve (IfcCompositeCurve).
IfcConic	A conic (IfcConic) is a planar curve which could be produced by intersecting a plane with a cone.
IfcCurve	A curve can be envisioned as the path of a point moving in its coordinate space.
IfcCurveBoundedPlane	The curve bounded surface is a parametric surface with curved boundaries defined by one or more boundary curves.
IfcDirection	his entity defines a general direction vector in two or three dimensional space.
IfcElementarySurface	An elementary surface (IfcElementarySurface) is a simple analytic surface with defined parametric representation.
IfcEllipse	An ellipse (IfcEllipse) is a conic section defined by the lengths of the semi-major and semi-minor diameters and the position (center or mid point of the line joining the foci) and orientation of the curve.
IfcGeometricRepresentationItem	a instance of the class is a representation item that has the additional meaning of having geometric position or orientation or both.
IfcLine	A line is an unbounded curve with constant tangent direction.
IfcMappedItem	A mapped item is the use of an existing representation (the mapping source - mapped representation) as a representation item in a second representation.
IfcOffsetCurve2D	An offset curve 2d (IfcOffsetCurve2d) is a curve at a constant distance from a basis curve in two-dimensional space.
IfcOffsetCurve3D	An offset curve 3d is a curve at a constant distance from a basis curve in three-dimensional space.
IfcPlacement	A placement entity defines the local environment for the definition of a geometry item.
IfcPlane	A plane is an unbounded surface with a constant normal.
IfcPoint	An point is a location in some real Cartesian coordinate space Rm, for m = 1, 2 or 3.
IfcPointOnCurve	A point on curve is a point which lies on a curve.
IfcPointOnSurface	A point on surface is a point which lies on a parametric surface.
IfcPolyline	An IfcPolyline is a bounded curve of n -1 linear segments, defined by a list of n points, P1, P2 ...
IfcRationalBezierCurve	A rational Bezier curve is a B-spline curve described in terms of control points and basic functions.
IfcRectangularTrimmedSurface	The trimmed surface is a simple bounded surface in which the boundaries are the constant parametric lines u1 = u1, u2 = u2, v1 = v1 and v2 = v2.
IfcRepresentationItem	A instance of the class is an element of product data that participates in one or more representations or contributes to the definition of another representation item.
IfcRepresentationMap	A representation map is the identification of a representation and a representation item in that representation for the purpose of mapping.
IfcSurface	A surface can be envisioned as a set of connected points in 3-dimensional space which is always locally 2-dimensional, but need not be a manifold.
IfcSurfaceOfLinearExtrusion	This surface is a simple swept surface or a generalised cylinder obtained by sweeping a curve in a given direction.
IfcSurfaceOfRevolution	A surface of revolution (IfcSurfaceOfRevolution) is the surface obtained by rotating a curve one complete revolution about an axis.
IfcSweptSurface	A swept surface is one that is constructed by sweeping a curve along another curve.
IfcTrimmedCurve	A trimmed curve is a bounded curve which is created by taking a selected portion, between two identified points, of the associated basis curve.
IfcVector	The vector is defined in terms of the direction and magnitude of the vector.