UG Secondary Program - Create and Edit Features

stephen zhang · 发表于 2009-6-30 19:15

Most features use a builder method to create new features and to edit existing features.  Features that do not use the builder method use constructor methods that are specific to the feature. The feature specific constructors are defined in the language reference guides.  This section discusses the general concepts of the builder method.
Builder Method
The builder method uses the following general steps.
Create a New Feature
Create an instance of the builder object for the desired feature type providing a null object as input.
Edit the properties of the builder object to set the feature parameters and options.
Use the Commit method of the builder object to create an instance of the feature.  The Commit method will return the new feature object.
Use the Destroy method of the builder object to delete the builder object.
Edit an Existing Feature (same steps except provide an existing object)
Create an instance of the builder object for the desired feature type providing the object of the feature to edit.
Edit the properties of the builder object to edit the feature parameters and options.
Use the Commit method of the builder object to edit the existing feature.
Use the Destroy method of the builder object to delete the builder object.
Each type of feature that uses the builder method will have a specific builder class.  All builder classes can be found in the Features name space. For instance the class for the Block Feature builder is found in: Features.BlockFeatureBuilder.
The create a builder object, the Part Class contains a Features property that contains create methods for each builder class.  For instance, given "workPart" as an instance of a part object, the create method for a Block Feature builder is workPart.Features.CreateBlockFeatureBuilder(), and the create method for an Edge Blend Feature builder is workPart.Features.CreateEdgeBlendFeatureBuilder().
Create and Edit Features - Language Specific Details
NX Open for C++
NX Open for .NET
NX Open for Java
NX Open for C++
The following examples shows how to create a feature builder for a Block Feature and then use the feature builder to create a new Block Feature.  A feature builder is then created to edit the Block Feature.
Session *NXSession = Session::GetSession();
Part *workPart (NXSession->Parts()->Work());

Feature *nullFeature (NULL);

Point3d origin = new Point3d(0.0, 0.0, 0.0);

//**************************************************************************
//CREATE BLOCK

BlockFeatureBuilder *newBlock = NULL;
newBlock = workPart->Features()->CreateBlockFeatureBuilder(nullFeature);

newBlock->SetOriginAndLengths(origin, "50", "80", "100");

Feature *blockFeature = newBlock->CommitFeature();

newBlock->Destroy();

//**************************************************************************
//EDIT BLOCK

BlockFeatureBuilder *oldBlock = workPart->Features()->CreateBlockFeatureBuilder(blockFeature);

oldBlock->SetOriginAndLengths(origin, "100", "20", "50");

oldBlock->CommitFeature();

oldBlock->Destroy();
NX Open for .NET
The following examples shows how to create a feature builder for a Block Feature and then use the feature builder to create a new Block Feature.  A feature builder is then created to edit the Block Feature.
Dim NXSession As Session = Session.GetSession()
         Dim workPart As Part = NXSession.Parts.Work

         Dim nullFeature As Feature = Nothing

         Dim origin As Point3d = New Point3d(0.0, 0.0, 0.0)

         '**************************************************************************
         'CREATE BLOCK

         Dim newBlock As BlockFeatureBuilder = workPart.Features.CreateBlockFeatureBuilder(nullFeature)

         newBlock.SetOriginAndLengths(origin, "50", "80", "100")

         Dim blockFeature As Feature = newBlock.CommitFeature()

         newBlock.Destroy()

         '**************************************************************************
         'EDIT BLOCK

         Dim oldBlock As BlockFeatureBuilder = workPart.Features.CreateBlockFeatureBuilder(blockFeature)

         oldBlock.SetOriginAndLengths(origin, "100", "20", "50")

         oldBlock.Commit()

         oldBlock.Destroy()
NX Open for Java
The following examples shows how to create a feature builder for a Block Feature and then use the feature builder to create a new Block Feature.  A feature builder is then created to edit the Block Feature.
Session NXSession = (Session)SessionFactory.get("Session");
Part workPart = NXSession.parts().work();
Point3d origin = new Point3d(0.0, 0.0, 0.0, 0.0);
nxopen.features.Feature nullFeature = null;
//**************************************************************************
//CREATE BLOCK
nxopen.features.BlockFeatureBuilder newBlock = workPart.features().createBlockFeatureBuilder(nullFeature);
newBlock.setOriginAndLengths(origin,  "50", "80", "100");
nxopen.features.Feature blockFeature = newBlock.commitFeature();
newBlock.destroy();
//**************************************************************************
//EDIT BLOCK
nxopen.features.BlockFeatureBuilder oldBlock = workPart.features().createBlockFeatureBuilder(blockFeature);
oldBlock.setOriginAndLengths(origin,  "100", "20", "50");
oldBlock.commitFeature();
oldBlock.destroy();

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