Teigha Interface Specific Options

Teigha is the interface responsible for converting DWG, DXF, DWF, DGN and similar file types.

To specify an assembly detail merging depth:

  1. Click on the Interface Settings tab.

On the drop-down list, select Teigha:

  1. Go to the Teigha Interface Specific Options and change the values which will affect the AutoCAD DXF, DWG, DWF, DGN format conversions.
  2. With theAssembly Depth option, preservation or merging of assemblies can be controlled. Teigha input files may result in rather deep (complex) scene tree. Such deep hierarchies affect both rendering performance and size of 3D PDF files. This parameters specifies maximum hierarchy depth in the resulting 3D PDF file. Nodes at deeper levels, such as small leaf nodes, than this parameter will be merged into appropriate scene tree group. With the default value of 1, the entire model is merged into a single node.
  3. Suppressing Lines. Models may contain either or both Lines and Surfaces. As a general guide, surfaces compress much better in PRC-HCT than lines. Also, sometimes the wireframe representation is not needed for the final PDF. So the Suppress Lines option allows only surfaces to be converted. If you still need lines but wish to control resolution, then enable Advanced Simplifcation and set a budget for the number of lines to convert.
  4. View selection. Some DWG files contain multiple views, for instance a 2D paper space view and a 3D view. By default with View Selection "*", all views are converted and merged into the same 3D scene. If the 3D model is contained in one specific view, this can be specified, ignoring other inappropriate views.
  5. Export Layers - If input contains a logical layer structure and this option is enabled, the layers become new parent nodes in the assembly hierarchy. This allows visibility or rendering settings to be applied to the layer without selection of individual parts within the layer. The Model tree becomes deeper with more entries. Where possible the layer names are preserved. If the input does not contain layers then this option has no effect.
  6. Export Materials - If input contains various distinct material properties on assembly parts and this option is enabled, separate model tree nodes are exported for each of the materials. This allows the exported model to reflect the variation of properties available, avoiding combining them into single nodes. This option may significantly increase the size and depth of the model tree output.
  7. Between Knots - Specifies distance between knots. When the input contains smooth surfaces, curves or NURBS, a tessellation may be applied. This parameter specifies the distance between NURBS parametric UV surface definition knots, so that the tessellation resolution may be controlled to give either a smooth or stepped, facet appearance.
  8. Normal Tolerance - Specifies normal tolerance for parallel faces. When the input contains smooth surfaces, curves or NURBS, a tessellation may be applied. To assist user control for the degree and resolution of tessellation, this parameter provides a tolerance for when adjacent faces should be created to approximate surface curvature. Normals are the vector pointing perpendicular to the surface. This parameter relates to the variation in direction angle between normals.