How to use Construction Tree

Table of Contents

• Geometries
• Attributes
• Model presentation
• PMIs and Drawings
• Selections and Groups
• Miscellaneous

A Dtk_Node is an object representing an element in the construction tree of a part.

Each Dtk_Node has a type and children and several attributes in Dtk_Info that you can get with Dtk_Node::GetInfos() method.
Following the type of node returned by Dtk_Node::GetNodeFullType(), you have to call the corresponding method (Dtk_Node::GetDtk_BodyPtr(), Dtk_Node::GetDtk_MeshPtr()...) to get the full information.

Note

The full data is read from the input CAD file only at Dtk_Node::GetDtk_***Ptr call to limit memory consumption.

Geometries

• Dtk_Node::BodyType : BREP and Wireframe, Geometrical and Topological entities (solids, shells, faces, surfaces). Sets of 3D free curves, sketches.
  • Accessing to Dtk_Body
• Dtk_Node::MeshType : Meshes included in the CAD file as display information or for design purpose.
  
  • Accessing to Dtk_mesh

Attributes

• Dtk_Node::LayerInfosSetType : layer information and layer filters.
  • Accessing to Dtk_LayerInfosSet Class
• Dtk_Node::ColorInfosSetType : palette color information.
  • Accessing to Dtk_ColorInfosSet Class
• Dtk_Node::MetaDataType : PDM file properties, generic custom properties (named values)
  • Accessing to Dtk_MetaData Class

Model presentation

• Dtk_Node::CameraType Node represents camera.
  • Accessing to Dtk_Camera Class
    
• Dtk_Node::ModelDisplayType : Model views including filtering, sections and cameras.
  • Accessing to Dtk_ModelDisplay
• Dtk_Node::AxisSystemType : additional orthonormal basis.
  • Accessing to Dtk_AxisSystem Class

PMIs and Drawings

• Dtk_Node::FdtType : Free notes, Product Manufacturing Information, set of Annotations/Dimensions/Tolerancing/Datums entities, incl. links to geometries/components.
  • Accessing to Dtk_Fdt
• Dtk_Node::DrawingType : 2D Sheet data including geometries and PMI entities.
  • Accessing to Dtk_Drawing Class

Selections and Groups

• Dtk_Node::VirtualType : Node with name containing only children.
• Selection sets : How to use Selection Set
• Publications : How to use Publications

Miscellaneous

• Dtk_Node::ConstraintType : Assembly constraints between Dtk_Component.
• Feature : Parameters to be used in downstream applications (holes, patterns, threads, pockets and others depending on the CAD format)
  • Accessing to Dtk_Feature Class

    Note

    It can be associated with any Dtk_Node type.