CreateModel

This function creates and empty model.
References inside to other ontologies will be included. A handle to the model will be returned, or 0 in case something went wrong.

Syntax

C++ 32 bit

C++ 64 bit

C# 32 bit

C# 64 bit

public const string enginedll = @"engine.dll";

[DllImport(enginedll, EntryPoint = "CreateModel")]
public static extern Int64 CreateModel();

Example (based on pure API calls)

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

using RDF;      //  include at least engine.cs within your solution

...

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

    if (model != 0)
    {
        //
        //  Classes
        //
        Int64   classBooleanOperation = RDF.engine.GetClassByName(model, "BooleanOperation"),
                classCube = RDF.engine.GetClassByName(model, "Cube"),
                classCylinder = RDF.engine.GetClassByName(model, "Cylinder"),
                classMatrix = RDF.engine.GetClassByName(model, "Matrix"),
                classTransformation = RDF.engine.GetClassByName(model, "Transformation");

        //
        //  Object Properties (relations)
        //
        Int64   propertyFirstObject = RDF.engine.GetPropertyByName(model, "firstObject"),
                propertyMatrix = RDF.engine.GetPropertyByName(model, "matrix"),
                propertyObject = RDF.engine.GetPropertyByName(model, "object"),
                propertySecondObject = RDF.engine.GetPropertyByName(model, "secondObject");

        //
        //  Datatype Properties (attributes)
        //
        Int64   property_41 = RDF.engine.GetPropertyByName(model, "_41"),
                propertyLength = RDF.engine.GetPropertyByName(model, "length"),
                propertyRadius = RDF.engine.GetPropertyByName(model, "radius"),
                propertySegmentationParts = RDF.engine.GetPropertyByName(model, "segmentationParts"),
                propertyType = RDF.engine.GetPropertyByName(model, "type");

        //
        //  Instances
        //
        Int64   instanceBooleanOperation = RDF.engine.CreateInstance(classBooleanOperation, (string) null),
                instanceCube = RDF.engine.CreateInstance(classCube, (string) null),
                instanceCylinder = RDF.engine.CreateInstance(classCylinder, (string) null),
                instanceMatrix = RDF.engine.CreateInstance(classMatrix, (string) null),
                instanceTransformation = RDF.engine.CreateInstance(classTransformation, (string) null);

        RDF.engine.SetObjectProperty(instanceTransformation, propertyObject, ref instanceCylinder, 1);
        RDF.engine.SetObjectProperty(instanceTransformation, propertyMatrix, ref instanceMatrix, 1);

        double  length = 1.8,
                radius = 1.3,
                offsetX = 4.2;
        Int64   segmentationParts = 36;
        
        RDF.engine.SetDatatypeProperty(instanceCylinder, propertyLength, ref length, 1);
        RDF.engine.SetDatatypeProperty(instanceCylinder, propertyRadius, ref radius, 1);
        RDF.engine.SetDatatypeProperty(instanceCylinder, propertyFirstObject, ref segmentationParts, 1);
        RDF.engine.SetDatatypeProperty(instanceMatrix, property_41, ref offsetX, 1);

        //
        //  Saves only the Transformation and (indirectly) related instances
        //
        RDF.engine.SaveInstanceTreeW(instanceTransformation, System.Text.Encoding.Unicode.GetBytes("c:\\created\\TranformedCylinder.bin"));

        RDF.engine.SetObjectProperty(instanceBooleanOperation, propertyFirstObject, ref instanceCube, 1);
        RDF.engine.SetObjectProperty(instanceBooleanOperation, propertySecondObject, ref instanceCylinder, 1);

        length = 2.1;
        Int64   type = 1;

        RDF.engine.SetDatatypeProperty(instanceCube, propertyLength, ref length, 1);
        RDF.engine.SetDatatypeProperty(instanceBooleanOperation, propertyType, ref type, 1);

        //
        //  Saves all instances
        //
        RDF.engine.SaveModelW(model, System.Text.Encoding.Unicode.GetBytes("c:\\created\\TranformedCylinderAndCubeWithSubtractedCylinder.bin"));

        //
        //  Saves only the Boolean Operation and (indirectly) related instances
        //
        RDF.engine.SaveInstanceTreeW(instanceBooleanOperation, System.Text.Encoding.Unicode.GetBytes("c:\\created\\CubeWithSubtractedCylinder.bin"));

        RDF.engine.CloseModel(model);
    }
}