(This can be corrected by retoplogizing with Dynamesh as it merges any touching geometry and removes any hidden.) What is a VDM BrushĪ VDM brush is very similar to an IMM brush but for one major difference. This is why IMM brushes are popular with hard surface modelling as they can look a lot more natural. You have to manipulate the ear and head separately to blend it. You can get it in place, but making it look like its attached to the head can be tricky.
The biggest limitation is the fact it can be difficult to integrate and blend into your mesh especially when organic modelling.įor example you have a IMM brush to add an ear to a model. This is great for concepting out your ideas without wasting to much time sculpting.Īll in all it can considerably speed up your workflow. Using’s IMM brushes allows you to quickly iterate in a non-destructive manner. If you want to move the IMM brush simply select the poly group associated with it and move it. Having sperate geometry makes it really handy to select and to move around as it does not affect the model it is applied to. As the below demonstrates each of the screws are separate meshes attached to the sphere with separate playgroups. It is similar to just creating a new subtool, however the added geometry from a IMM brush stays with the tool it is applied to. What is a IMM BrushĪ IMM brush is a brush that usually contains one or more pieces of geometry that you can choose from.
In this article we will go into more depth what each of these are so we can more clearly understand the difference. A IMM creates new geometry separate to the mesh and a VDM integrates with the mesh. The biggest difference between a IMM Brush and a VDM Brush in Zbrush is how it interacts with the the mesh it is being applied to. From experience and research I can conclude the following. It can get very confusing as to what they do and what the differences are. Because they are brushes they sometimes are referred to interchangeably which is not true. VDM (Vector Displacement Mesh) and IMM (Insert Multi Mesh) brushes are terms that you will regularly come across in Zbrush.
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