The parameters of this modifier are similar to those of the Soft Selection function of an editable mesh or editable poly object.
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Modify panel > Optionally make a vertex sub-object selection. > Modifier List > Object-Space Modifiers > Affect Region
Modifier Stack
- Points sub-object level
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At this sub-object level, you can select the base and tip of the gizmo arrow. You can translate and animate these two points together or individually to adjust the effect of the modifier.
Parameters rollout
- Falloff
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Sets the radius of affected vertices, in units, from the base of the gizmo arrow. (Spinner value range: float, 0.0 to 999,999.0)
- Ignore Back Facing
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When on, affects only those vertices whose face normals are in the same general direction as the gizmo arrow. When off, all vertices within the Falloff range are affected.
- Pinch
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Affects the tangency of the curve where it meets the gizmo arrow tip. Positive values produce a pointed tip while negative values produce a dimple. (Spinner value range: float, –999,999.0 to 999,999.0)
- Bubble
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Changes the curvature of the affected vertices. A value of 1.0 produces a half-dome. As you reduce this value, the sides of the dome slope more steeply. Negative values lower the base of the curve below the base of the arrow gizmo. (Spinner value range: float, –999,999.0 to 999,999.0)