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Classes
Object Properties (relations)
Datatype Properties

Circle

This class represents the concept Circle.

Class

Class Inheritance Structure
class GeometricItem
   relation material
      range Material, cardinality [0, 1]
class Curve
class ConicalCurve
   property a
      range double (64 bit), cardinality [1, 1]
   property segmentationParts
      range integer (64 bit), cardinality [0, 1]
   property size
      range double (64 bit), cardinality [0, 1]
   property start
      range double (64 bit), cardinality [0, 1]
class Circle

subClasses 
      class CircleByPoints

Example (based on pure API calls)

Here you can find code snippits that show how the API call Circle can be used.

C++ 32 bit
C++ 64 bit
C# 32 bit
C# 64 bit
using RDF;      //  include at least engine.cs within your solution

public void CreateCircle()
{
    Int64 model = RDF.engine.CreateModel();

    if (model != 0)
    {
        //
        //  Classes
        //
        Int64   classCircle = RDF.engine.GetClassByName(model, "Circle");

        //
        //  Datatype Properties (attributes)
        //
        Int64   propertyRadius = RDF.engine.GetPropertyByName(model, "radius"),
                propertyStart = RDF.engine.GetPropertyByName(model, "start"),
                propertySize = RDF.engine.GetPropertyByName(model, "size"),
                propertySegmentationParts = RDF.engine.GetPropertyByName(model, "segmentationParts");

        //
        //  Instances (creating)
        //
        Int64   myInstanceCircle = RDF.engine.CreateInstance(classCircle, (string) null);

        double  radius = 1.3,
                start = 1.57079633,
                size = 3.14159265;
        Int64   segmentationParts = 36;
        
        RDF.engine.SetDatatypeProperty(myInstanceCircle, propertyRadius, ref radius, 1);
        RDF.engine.SetDatatypeProperty(myInstanceCircle, propertyStart, ref start, 1);
        RDF.engine.SetDatatypeProperty(myInstanceCircle, propertySize, ref size, 1);
        RDF.engine.SetDatatypeProperty(myInstanceCircle, propertySegmentationParts, ref segmentationParts, 1);

        //
        //  The resulting model can be viewed in 3D-Editor.exe
        //
        RDF.engine.SaveModel(model, "c:\\created\\myCircle.bin");
        RDF.engine.CloseModel(model);
    }
}