Splits selected polygon components (edges or faces) into smaller components. Add Divisions is useful when you need to add detail to an existing polygon mesh in either a global or localized manner.
Polygon faces can be divided into three-sided (triangles) or four-sided (quadrangles) faces. Edges can be subdivided so that the number of sides on a face is increased.
The contents of the Add Divisions options window changes depending on what component selection mode you are currently in.
Exponential Controls (for faces)
Specifies the number of divisions that occur for selected faces. The option can have a value ranging between one and four. The default value is one. A Division level of one divides a single face into four smaller faces when Exponentially is the selected Division method. If the Division level is set to two, a single face is subdivided into sixteen smaller faces.
When turned on, the specified Division value is the distance between vertices in world space. When turned off, the Divisions value is the distance between vertices in local space. This option is available for edges only.
The Add Divisions feature is driven from the pick mask, not the current selection. For instance, if you select a face, but the pick mask is set to Edge, Add Divisions will not work and if you open the option window, the option window for Edges displays. Also, if the pick mask is set to Vertex or UV, the Add Divisions option window will not open, since only faces and edges can be subdivided. To work around this, ensure that the pick mask corresponds to the selection.
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