Tekla.Structures.Geometry3d Namespace 
The Tekla.Structures.Geometry3d namespace contains the required basic 3D geometric classes that are used by Tekla Structures. Additionally, some helper functionality to ease the usage of these classes is provided.
Classes
Class  Description  

AABB 
The AABB class represents an axisaligned 3d bounding box.
 
Arc 
Represents an arc geometry
 
CoordinateSystem 
The CoordinateSystem class defines a coordinate system in space. The system is
defined by an origin, an Xaxis and a Yaxis. The Zaxis is the cross product of the Xaxis and the Yaxis.
 
Distance 
The Distance class contains methods for calculating the distance between geometric objects.
 
FacetedBrep 
The FacetedBrep class defines a faceted BREP.
 
FacetedBrepFace 
The FacetedBrepFace class defines a face of a faceted BREP.
A FacetedBrepFace cannot be instantiated directly. They are managed internally by a FacetedBrep.
 
FacetedBrepFaceHole 
The FacetedBrepFaceHole class defines a hole on a faceted BREP face.
A FacetedBrepFaceHole cannot be instantiated directly. They are managed internally by a FacetedBrepFace.
You can look also at the code example for the class FacetedBrepFace to see more examples.
 
FacetedBrepWithNormals 
The FacetedBRepWithNormals class defines a faceted BREP that has also vertex normal vectors.
 
GeometricPlane 
The GeometricPlane class represents a 3d geometric plane.
 
GeometryConstants 
The Constants class of Geometry3d holds certain constant values that are used
internally by the other geometry classes.
 
IndirectPolymeshEdge 
The IndirectEdge class represents a single global edge in a solid
using integer indexes to reference to vertices instead of directly using
geometric (coordinate) values.
 
Intersection 
The Intersection class contains methods for calculating intersections between geometric objects.
 
Line 
The Line class represents a single infinite line in 3D space. See LineSegment for
the implementation of a segment of a line.
 
LineSegment 
The LineSegment class represents a single finite segment of a line in 3D space. See Line
for the implementation of a straight line.
 
Matrix 
The Matrix class represents a 4x3 matrix.
 
MatrixFactory 
The MatrixFactory class provides a convenient way to generate different
kinds of transformation matrices.
 
OBB 
The OBB class represents an oriented 3d bounding box.
 
Parallel 
The Parallel class contains methods for testing the parallelism of geometric objects.
 
Point 
The Point class represents a single position in 3D space.
 
Polycurve 
Represents 3D polycurve geometry, which itself is composed of one or more connected curves. The class offers
facilities for iteration through the polycurve, and implements the ICurve interface.
Once this class is constructed, it represents an immutable polycurve. The curves that can be obtained during
iteration are mere copies of the curves in the polycurve, and mutating them won't affect the polycurve. Please
use the PolycurveGeometryBuilder class to build and manipulate this objects of this class.
Since it implements IEnumerable, the curves can be iterated using foreach loops, and it supports
all of the LINQ operations, and it is possible to build arbitrarily complex queries over the curves of this
class.
 
PolycurveGeometryBuilder 
The polycurve geometry builder class is in charge of building the geometry list of a polycurve. All the
geometries that the builder connects must be connected on the correct end points. The builder has a fluent
interface, and can be used as follows:
using Tekla.Structures.Geometry3d; using Tekla.Structures.Model; public class Example { static void Main(string[] args) { var segment = new LineSegment(new Point(0, 0, 0), new Point(1000, 0, 0)); var arc = new Arc(new Point(1000, 0, 0), new Point(2000, 1000, 0), new Point(1707.1, 292.89, 0)); var geometryList = new PolycurveGeometrySolver().Append(arc).Append(segment).GetPolycurve(); var polycurve = new ControlPolycurve(); polycurve.Geometry = geometryList; polycurve.Insert(); } }  
PolyLine 
The PolyLine class represents a line that consists of one or more line segments.
To create a polyline, you have to give a list of the points that will form the polyline.
The first point in the list will be connected with the second point in the list,
the second point in the list will be connected with the third point in the list, etc.
 
Projection 
The Projection class contains methods for calculating the projection of geometric objects on
other geometric objects.
 
Vector 
The Vector class defines a direction and magnitude from the current origin.

Interfaces
Interface  Description  

IBoundingVolume 
The BoundingVolume interface represents any generic 3D bounding volume.
 
ICurve 
Interface that represents an abstract curved geometry defined by a set of points. This interface is intended
to be the base class of 3D curves.

Enumerations
Enumeration  Description  

PolymeshEdgeTypeEnum 
The type of the polymesh edge. This should always correspond 1:1 with
geometry::IndirectEdge_s::EdgeType_e on the Tekla Structures Core side
