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Overview


The Objects tab allows you to replace basic Revit families of various categories with advanced photoreal geometries from external files at render time only. They are not present in the Revit model and do not use up any resources. This allows the rendering of models with many millions of faces, more than Revit itself can handle.

Note that you can import a .vrscene file, which allows for assets, such as geometry, materials, and lights, to be shared together between all platforms that run V-Ray. V-Ray Scene materials and geometry are non-editable and lights can only be toggled on and off. 

Depending on the use case, a proxy file might be more appropriate than a .vrscene file. Once imported, its parameters are available in the Asset Editor's Geometry tab.

Search Bar and Filters


Show Families

The filter allows you to filter the list of objects based on the following options:

All – Shows all families that are currently loaded into the Revit project file.

Used in project – Shows all families that are already placed into the Revit model.

Families can also be searched by name or material ID in the Filter search bar. Selecting a single or multiple families in the Revit viewport activates the filter as well.

V-Ray Mapping

Applies a filter based on the proxy override. 

All – Shows a list of all families.

Mapped – Shows a list of all families which are currently overridden with a V-Ray Proxy or V-Ray Scene.

Unmapped – Shows a list of all families which have not been overridden with a V-Ray Proxy/V-Ray Scene yet.

 

 

 

Parameters


Replace objects with V-Ray Proxy

The .vrmesh is a special file format which contains all geometric information of a mesh, needed to render it - vertices and face topology, as well as texture channels, face material IDs, smoothing groups, normals, etc. In addition, the mesh is preprocessed and subdivided into chunks for easier access.

It is important to realize that the mesh is in a "ready to render" format in terms of geometric state, therefore no further modifications to its geometry are possible.

To override an object with a V-Ray Proxy, press Replace objects with V-Ray Proxy/V-Ray Scene.
A dialog box will appear allowing you to search for V-Ray Proxy (.vrmesh) or alembic (.abc) files. Once you have selected a file, the following options become available:

Scale – Allows you to scale the V-Ray Proxy.

Rotation – Allows you to rotate the V-Ray Proxy around its vertical axis.

Flip Axis – Allows you to flip the V-Ray Proxy around its horizontal axis.

Randomize – Defines scale and rotation range (min/max) for the selected items to be randomized. Use the Refresh button on the right to choose between random combinations.

Material Transformation

Material 0/1 Allows you to assign a V-Ray material to the V-Ray Proxy.

Width/Height  – Sets the width and the height of the V-Ray material.

Rotation – Rotates the V-Ray material (in degrees). 

Offset V/H – Controls the V-Ray material offset in the vertical (V) and horizontal (H) direction. 

 

 

 

Replace objects with V-Ray Scene

VRayScene allows for assets to be shared between all platforms that run V-Ray. It links a previously saved .vrscene file into V-Ray for Revit and supports rendering geometry, materials and lights.

To override an object with a V-Ray scene, press Replace objects with V-Ray Proxy/V-Ray Scene. A dialog box will appear allowing you to search for V-Ray Scene (.vrscene). Once you have selected a file, the following options become available:

Scale – Allows you to scale the V-Ray Scene

Rotation – Allows you to rotate the V-Ray Scene around its vertical axis.

Flip Axis – Allows you to flip the V-Ray Scene around its horizontal axis.

Randomize – Defines scale and rotation range (min/max) for the selected items to be randomized. Use the Refresh button on the right to choose between random combinations.

Lights enabled – When enabled, renders the lights within the V-Ray Scene file.