First, if you want to get the maximum performance out of Rhino, Boot Camp is the way to go. Boot Camp lets you to install Windows on your Mac, essentially allowing you to turn on your computer and use Windows instead of Mac OS X. You don't have to get rid of Mac OS X; you can switch between the two every time you boot up.

• In Rhino 6 for Windows use the Tools drop down menu Options Licenses, click Change your license. In Rhino 6 for Mac use the Rhinoceros drop down menu Preferences Licenses. Click Remove License on the bottom left of the dialog. (If your license is in a Zoo server, select it in the Zoo admin console, and press the delete tool icon.).
• Have you been using Rhinoceros on a Windows PC for years and now you want change over to a Mac? Here is a way to make your transition easier!
• Grasshopper is a unit-less application, as is Rhino in fact. Units are only little bits of text that are appended to numbers when these numbers are displayed to the user. Rhino doesn't care whether you work in feet, or meters, or parsecs, it will only affect the formatting of numerics.

Rhino.io is an Import/Export plugin for Rhino scenes usingthe OpenNURBS toolkit. It requires CINEMA 4D R11 orhigher and can read Rhino files up to version 4. The most up to date information can be found on theofficial support website.

• Installation
• Rhino Import
  • Merge
• Rhino Export

Installation

You can always download the most recent versions of rhino.io for CINEMA 4D from thesupport website. The Zip-File contains both,the windows version and a Universal Binary for Mac OS X.

After downloading the rhino.io Zip-File, unzip it and copy the folder into the 'plugins' folderof your CINEMA 4D application directory. The screenshots below show the correct locations forWindows and Mac OS X users respectively.

Obtaining a License

After you installed rhino.io as a CINEMA 4D plugin, you need to obtain a rhino.io license. Thislicense is generated based on the rhino.io serial you received on purchase, as well as the CINEMA 4Dserial of the installation you want to use rhino.io with. Do not use the temporary CINEMA 4D serialyou get on purchase of CINEMA 4D, but the final number you get after registering with MAXON.

The easiest way to get your license code, is to start CINEMA 4D with the plugin installed. Itwill complain about the missing rhino.io license and bring up the Register window. Ignore this bypressing cancel, CINEMA 4D will continue to load. In the Plugins Menu you will find an entrycalled Register rhino.io. Clicking this entry will bring up the registration website with most ofthe info already filled in from what you entered in CINEMAs Register window. Finish filling outthis form and click submit. The license will then be sent instantly to the e-mail adress yousupplied.

You can also directly visit the registration website here:www.rhino.io/register/. If thereare any problems with obtaining a license, please check the support website or send an e-mail to info@rhino.io.

Rhino Import

General Operation

The Rhino Importer will load Rhino Mesh Objects as they are, but it is unableto tesselate NURBS and Brep Objects. Rhino does, however, store Render Meshes with NURBS objects,as long as they have at least once been rendered or drawn in shaded mode into the viewport and theSave Small flag has not been set when the file is saved. These Render Meshes can beimported.

For proper import, it is best to convert NURBS objects into meshes within Rhino before youimport into CINEMA 4D, or they need to have proper render tesselation settings.

The exact behaviour of the Rhino Import is guided by a number of settings, which come up at thetime of import and can always be found under Edit -> Preferences -> Import/Export -> RhinoImport.

Import Options

Scale Mode defines how the Rhino model is scaled on import. It defaults to Scale toDisplay Units, which means it will consider the unit in the Rhino file and the Basic Unitssetting from CINEMAs Units Preferences to compute the appropriate scaling factor. Customlets you define a custom scaling factor. The former option is probably the one you will mostlywant to use, since it automatically accounts for the scale information embedded in the Rhino file.

Custom Scale is the scaling factor used when Scale Mode is set to Custom

Import Layers controls how Rhino layers are imported. It defaults to As Layers,meaning Rhino Layers are directly converted to CINEMA layers. For certain workflows it might bemore appropriate to import layers as Null Objects and group all objects on the layer (andsublayers) thereunder. This is what As Groups does. Layers, that have no content, will neverbe imported.To completely ignore layers, set this option to Off.

If you want to Create Materials from Rhino materials, set this option to From RhinoMaterials. It is also possible to have materials created From Layer Colors. If you donot want any materials to be created, set this option to Off.

Clean Up Materials will remove any unused or duplicate material from the Rhino scene.Unused materials can come from objects that the Rhino Importer doesn't import, duplicate materialsoften happen when several objects have materials with identical settings applied.

Import Mesh Objects specifies whether Rhino Meshes are imported. If it is not checked,they are ignored on import.

When Import Render Meshes is checked, the Render Meshes stored with NURBS objects areimported. This is the way you will probably import most of your data, since the NURBS objects cannot be imported directly.

Import Curves will cause NURBS Curves and Polylines in the Rhino file to be imported asSpline Objects, when checked. While Polylines can be converted precisely, NURBS Curves will beautomatically tesselated creating 64 linear segments per span.

Import Cameras controls whether Named Views from Rhino are imported as Cameras.

Import Lights defines if light sources are imported from Rhino. Be aware, that for lightsdefined as camera space lights in Rhino, position and orientation may not match!

It is possible to have Rhino Groups imported as Selection Objects. If you want this to happen,make sure Import Groups is checked.

If Skip Invisible Objects is checked, the importer will ignore all hidden objects,otherwise they are imported and flagged as hidden within CINEMA 4D.

Objects in Rhino usually consist of separate NURBS patches, that are often joined at patchboundaries or trim curves. These patches are tesselated independently from each other, which causesduplicate vertices to be created at patch or trim boundaries. When working with these objects inCINEMA 4D, this is often a waste of resources and can be inconvenient when editing the model orapplying texture coordinates. It is possible to use the Optimize command after import.Checking the Merge Overlapping Points checkbox does the same thing on import. When thecheckbox is checked Threshold defines the maximum distance two points can have to beconsidered the same.

In Rhino objects to not have an axis associated with them, so normally the objects would importwith all their Axes at the origin. If Axis Center Objects is enabled, every objects axis ismoved to the center of the contained points.

Merge

When Merge is used to open a Rhino file, the importer checks if any objects that havebeen imported previosly from the same model already exist in the current CINEMA 4D scene. If thatis the case, a dialog window pops up, asking you if you just want the model to be updated with thechanges you made to the Rhino model. If you choose to do so, changes to objects will be appliedto the existing objects in CINEMA 4D, everything else (like material or layer reassignements orregrouping of the objects in the object manager) will stay intact.

This functionality uses some relatively new features of CINEMA 4D and thus won't reliably workin CINEMA 4D versions older than 11.531. If you are using an older version, a warning will pop upany time you use the Merge command and the functionality is disabled!

Rhino attaches unique IDs to all objects and layers. You can see this ID within Rhino byclicking on Details in the Object Properties Tab. On import, this ID is stored with theobjects and layers (or groups) in CINEMA 4D, so they can be looked up later. When the scene isupdated, the importer checks if any object in the merged Rhino file already exists in the CINEMAscene and updates the geometry. There are a few things to keep in mind, though:

• If an object has been removed within CINEMA, but still exists in the Rhino scene, it will be imported again. If you don't want this to happen you could e.g. hide the object and choose Skip Hidden Objects in the import settings.
• Some operations in Rhino (e.g. Join, Explode, Extract) don't keep the object ID intact. In that case, the importer doesn't know how the objects relate and imports the object anew.
• If an object is imported that didn't exist previously, the importer tries to put it inside the same layer or group, as long as the layer or group already exist. New layers do not get added.
• Some attention has to be paid on import settings when updating a scene. If e.g. a scene has been originally opened with layers imported as groups and, on merge, layer import is set to import as CINEMA 4D layers, new objects will not be sorted into the existing groups, because the importer looks for existing layers in the CINEMA 4D layer list.

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Rhino Export

General Operation

A layer called Default is created always, all objects that have no layer assigned in cinema, areassigned to that layer on export.

The exporter uses viewport visibility, not render visibility, to set Rhino layer visibilities

For advanced users: Be aware that exporting polygon meshes will not retain vertex order. Rhinocan not represent discontinous texture coordinates or normals, so the mesh will be processed sothat vertices can be split up in those cases. This has the downside that vertex count and orderwill, in most cases, be different.

The exact behaviour of the Rhino Import is guided by a number of settings, which come up at thetime of export and can always be found under Edit -> Preferences -> Import/Export -> RhinoExport.

Export Options

Scale Mode defines how information about the physical scale of the scene is stored. Itdefaults to Use Display Units, which will apply no scaling to the geometry in the scene andset the unit stored with the Rhino file to the units currently used in CINEMA 4D. A special caseare units that do not have a physical meaning (pixels). In this case, the unit is assumed to bemeters. Custom will let you define a Unit and Custom Scale factor.

If Export Splines is checked, any Spline Objects found in the scene are exported aspolylines. If the box is not checked, Spline Objects are ignored.

Disclaimer

The rhino.io Import/Export Tools have been created in cooperation betweenLAUBLab KG andTimm Dapperand are Copyright (C) 2009-2010 Timm Dapper

How To Change Units In Rhino 6 Mac

Rhino and OpenNURBS are Trademarks of Robert McNeel & Associates.The OpenNURBS toolkit is copyright (C) 1993-2007 Robert McNeel & Associates.All Rights Reserved.

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MAXON and CINEMA 4D are registered Trademarks of MAXON Computer GmbH.