Remeshing
From ZBrush Info
To create a base mesh for your sculpting in ZBrush, you can use ZSpheres, ZSketch, the built-in primitives or importing a model from another 3D package. Another solution is to do a remeshing of a model or a set of different objects. The Remeshing method creates new geometry with a new topology, but which is based off an existing one.
ZBrush uses its Unified Skin technology (based on voxels) to create the model. The purpose of these tools is to create a new base mesh rather than a high resolution mesh, based on the combination of different high resolution models. We recommend you use this only for the purpose of creating base meshes.
The Remesh function can use a symmetry option, associated with the Remesh All option. It will create a symmetrical result based on the selected SubTool when clicking on the Remesh all button. If you have a SubTool which is located on the right of the selected SubTool, when remeshing the model, the final mesh will have the shape of this SubTool on the right -and- left of the selected SubTool, the three of them combined in one and unique mesh.
At the top in the center, the original SubTool and below, the result of different Remeshes.
Note: You can use remesh to combine different high resolution models and then use the Project All function in the SubTool menu to reproject the details. Please keep in mind that some artifacts can appear on the junction of certain models.
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Remeshing One or More SubTools
To remesh one or more SubTools, go to the Tool >> SubTool menu and make visible all SubTools which need to be remeshed. Invisible/hidden SubTools won’t be used for this operation.
The Remesh All button and its options
In the Remesh All section, change the options according to your needs and press the Remesh All button to generate a new SubTool. This new SubTool will be appended to your existing model.
Remesh All options
Remesh All offers different options which affect the quality or the shape of the resulting model. Change these options before pressing the Remesh All button.
- Resolution slider: Increase or decrease the slider value to modify the resolution of the remesh model. Increasing the value can create high resolution meshes, making final sculpting more complex.
- Remesh Polish slider: Makes the resulting surface smooth or close to the original Tools or SubTools. This function is combined with two options, represented by a square or a rounded corner. The square will maintain the edges/volume of the mesh while the round square will give a round smoothness to the edges.
- Polygroup: Creates automatic polygroups based on the combination of the SubTools.
- Choose a symmetry axis: In the Remesh All button, click on the axis of your choice to create a symmetrical result for your combination of SubTools. The symmetry axis of the selected SubTool will be applied on all results. You don’t need to specify the Symmetry axis on non-selected SubTools.
Combining different SubTools with operators
To create a large amount of variation for your remeshing of models and create the base mesh that you need, you can define how the SubTools interact to create the new mesh. ZBrush includes these three Boolean operators for use when generating a remesh. The generated model will be computed from the top SubTool to the bottom one, as listed in the SubTool menu. To activate or change an operator, click on one of the three small icons in the SubTool selector: Union (the default), Subtraction or Intersection.
These operators can be mixed with the symmetry option of the activated SubTool before launching the Remeshing function.
The new SubTool operators for the Remesh All tool.
