modifiers

Cast Modifier

This modifier shifts the shape of a mesh, curve, surface or lattice to any of a few pre-defined shapes (sphere, cylinder, cuboid).

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It is equivalent to the To Sphere tool in Edit Mode Mesh ‣ Transform ‣ To Sphere, Alt-Shift-S and what other programs call “Spherify” or “Spherize”, but, as written above, it is not limited to casting to a sphere.

Decimate Modifier

The Decimate Modifier allows you to reduce the vertex/face count of a mesh with minimal shape changes.

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Duplication is not a modifier

There are currently four ways in Blender to procedurally duplicate objects. These options are located in the Object menu.

 

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Notes :

Yes, it’s not a modifier. But it’s so modifier like I put it here.

manual – duplication

 

Vertices

This creates an instance of all children of this object on each vertex (for mesh objects only).
Faces
This creates an instance of all children of this object on each face (for mesh objects only).
Group
This creates an instance of the group with the transformation of the object. Group duplicators can be animated using actions, or can get a Proxy.
Frames
For animated objects, this creates an instance on every frame. As you will see on this topic’s subpage, this is also a very powerful technique for arranging objects and for modeling them.

MODIFIERS WITH VERTEX GROUPS

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modifiers