New Compatibility Enhancements

More than 30 new compatibility enhancements and new updated libraries allow hundreds of other applications to read and write Rhino 4.0's native 3DM files.

Direct I/O support ( new, enhanced)

• Save 3DM - Rhino V4 saves 3dm files in V4 format and has a SaveAs V3 and V2 option.
• DWG/DXF import/export -
• Opens, imports, and saves AutoCAD 2004, 2005, and 2006 files in addition to previous versions.
• Opens and imports AutoCAD 2007 files.
• Reads solids, hatchs, linetypes, line width, ordinate dimension, and MLINES.
• Imports AutoCAD blocks as Rhino blocks.
• Save DWG - Unreferenced block definitions are now exported to DWG file format.
• Use schemes to save the option settings. The schemes apply to both DWG and DXF exporting.
• Control the way curves are converted to AutoCAD.
• DGN - Open, import, insert, or attach MicroStation DGN files.
• FBX - Import and export.
• GHS (General Hydrostatics) import/export (updated) - Major enhancement for reading and writing GHS geometry and part maker files.
• GTS import - Import GNU Triangulated Surface (GTS) files.
• KML - Export to Google Earth.
• EarthAnchorPoint - Stores a latitude and longitude in the model so that when it is exported to mapping and GIS software (like Google Earth) it will be properly located.
• PDF/AI import - PDF and Adobe Illustrator 8+ files.
• AI export
  • Supports page size, line weight, line type, and object color.
  • ViewportBoundary option.
• PLY - Import and export.
• SketchUp - Import.
• SketchUpImportOptions - Specifies how SketchUp files are read into Rhino.

• STEP import - Updated to support parts and assemblies as blocks.

• STL export - warns if objects are not closed.

• STEPTree - Browse the structure of a STEP file.

• SolidWorks - Open, import, insert, or attach SolidWorks files.

• WMF - Supports units.

Third-party I/O support

• openNURBS developer's toolkit supports Rhino 4.0 native 3DM files. Other 2-D and 3-D CAD/CAM/CAE and graphic applications can read and write Rhino's 3DM files directly without Rhino. These development tools are free to all software developers.