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VRay.com - Your source for all things VRay  ::  VRay for Rhino  ::  Manual  ::  Mesh Settings

VRay for Rhino Manual

VRay for Rhino Manual

Mesh Settings

In order for geometry to be rendered, whether it be with V-Ray or in the veiwport, a mesh needs to be created. Because Rhino uses NURBS instead of meshes for modeling all of the NURBS geometry must be converted to meshes in order to even appear in the viewport. The good part about using NURBS is that a different mesh can be created from the same geometry; one which is very fine or another which is coarse.

Setting a Custom Render Mesh

Access Render Mesh settings by clicking on Rhino Options and under Document properties clicking on Mesh. By default Rhino uses the preset Jagged & Faster. While you are working on your model it is recommended that you use the Jagged & Faster preset. However, when it becomes time to do render final images the Jagged & Faster preset may not produce a fine mesh, which can lead to odd looking renders.

Setting a Custom Render Mesh

To set a custom mesh click custom and the options below will become active with whatever were the previous mesh settings. The most effective way to create a mesh is by defining only a few of the parameters and letting Rhino figure out the rest. First change all of values to 0 except Maximum distance, edge to surface which should be set close to the tolerance value for your scene. Now set one of two different parameters, Maximum angle or Maximum Edge length. The best setting for Max angle is usually somewhere between 6 and 12. Maximum edge length will depend on your scene, and usually works well for high detail scenes without many large flat surfaces, such as jewelry. Beware of setting too fine of a mesh as this may take a long time for Rhino to calculate. Below are two examples with the mesh on the left and the rendered result on the right.

Setting a Custom Render Mesh - Example

The images above are from a very course mesh. Notice how the handle and the rim of the cup look jagged and odd. The images below are from a very fine mesh. Now the cups appear completely smooth.

Setting a Custom Render Mesh - Example

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Saturday, January 3, 2015

V-Ray 3.0 for Modo Preview

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V-Ray 3.0 for Modo provides flexibility and production-proven rendering capabilities for MODO artists creating 3D content.

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