Frequently Asked Questions

Frequently Asked Questions 2017-09-27T07:37:29+00:00
What is augmented CAD? 2017-12-07T11:32:11+00:00

Augmented CAD is a superior way of CAD modeling, where augmented access to the CAD object is provided. Augmented CAD simulates immediate responsiveness to a broad range of geometrical parameters that are key for complex 3D modeling such as

  • direct control of tangents
  • direct control of curvature
  • direct access to the digital object through interpolating control points
  • watertight junctions with immediate smoothness control
  • subdivision and local refinement with controllable smoothness
  • more localized control than NURBS and fewer parameters.

Augmented CAD is fully provided by the Xirus® kernel.

What are the advantages of augmented CAD compared to standard CAD? 2017-12-07T11:32:45+00:00

NURBS: Standard CAD that is based on NURBS has several drawbacks which make the modeling process tedious and time-consuming. The consequences of the limitations of NURBS are non-interpolating control points, non-local refinement, non-intuitive and challenging handling of smoothness, junctions or curvature. The reason for these limitations are the underlying mathematics. Xirus® implements a superior digital geometry representation that has been developed specifically to overcome today’s limitations in 3D CAD.

Subdivision and polygons: Classical subdivision has the drawback that the control-net does not interpolate the limit surface and uv-mapping or solid modeling is more difficult than with NURBS, whereas polygon meshes do interpolate a surface but do not allow for smooth modeling.

Mirrakoi®’s newly developed digital geometry representation for augmented CAD provides new powerful means for 3D CAD which simplify the task of complex 3D modeling, reduce training and learning costs, improve efficiency and accuracy during the modeling process and also allow for a superior design experience.

Is the Xirus® kernel compatible with NURBS? 2017-12-07T11:33:59+00:00

Yes. Xirus® is 100% forward compatible with NURBS. A CAD object that is modeled with Xirus® can be converted to NURBS at any moment during the modeling process. In the near future, a “NURBS-to-augmented CAD command” will be available in order to convert a NURBS object into the native Xirus® geometry.

For which Rhino versions is Xirus® available? 2018-01-16T16:32:59+00:00

Xirus® is currently developed for Rhino 5 for Windows and will also be available for Rhino 6.

Does a free trial version of Xirus® exist? 2018-02-16T16:57:32+00:00

Yes. A free trial version is available on our website: