How to use Construction Tree

A Dtk_Node is a tree data structure representing 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 info() method. There are several different types:

• Virtual Node contains only children.
• Body Node represents Brep and Wireframe.
• Mesh Node represents Tesselated Geometry.
• Drawing Node represents a 2D drawing.
• AxisPlacement Node represents an additional orthonormal basis.
• LayerInfosSet Node represents layer information and layer filters.
• ColorInfosSet Node represents color palette information.
• MetaData Node represents Additional Information or Parameter.
• Feature Node represents feature information.
• Camera Node represents camera.
  
• ModelDisplay Node represents a 'snapshot' of the scene display.
• Fdt Node represents basic FDT/GDT entities.

Following the type of node, you have to call the corresponding method (GetDtk_BodyPtr, GetDtk_MeshPtr,...) to get the full information.
The full data is read in the input file only at this time to limit memory consumption. Any Dtk_Node can also have a corresponding Dtk_feat which can be construction or manufacturing feature.

See More Details for each type of node:

• Accessing to Dtk_Body
• Accessing to Dtk_mesh
• Accessing to Dtk_Drawing Class
• Accessing to Dtk_AxisSystem Class
• Accessing to Dtk_LayerInfosSet Class
• Accessing to Dtk_ColorInfosSet Class
• Accessing to Dtk_MetaData Class
• Accessing to Dtk_Feature Class
• Accessing to Dtk_Camera Class
• Accessing to Dtk_ModelDisplay
• Accessing to Dtk_Fdt