The tyFaceExtrude modifier allows you to procedurally extrude and scale mesh faces, using vertex soft selection values to control the extrusion/scale amounts.
Polygons are groups of faces whose adjacent edges are invisible.
Window: all vertices of a face must be selected in order for the face to be extruded.
Crossing at least one vertex of the face must be selected in order for the face to be extruded.
Select affected faces: when enabled, affected faces (faces that are extruded or scaled) will be selected.
Select new faces: when enabled, new faces (faces created during extrusion process) will be selected.
Amount: the amount to extrude applicable faces.
Along face normals: extruded face vertices will be moved along the direction of the extruded face normal.
Along face verts: extruded face vertices will be moved along the direction of the extruded face vertex normals.
Selection affect curve: soft selection values will be interpolated along this curve.
Relative to area: the length of the extrusion will be relative to the area of the face.
Area: the target face area.
Invert: inverts the effect of the face area multiplier.
Average: the average selection weight of a face’s vertices will be used to control the extrude amount.
Per-Vertex: the extrude amount of each face’s vertex will be individually controlled by the vertex’s selection weight.
Count: the number of extra segments to add to the height of each extrusion.
Jitter %: the amount of random jitter to displace each segment by, relative to its neighboring segments.
Scale %: the amount to scale extruded faces, tapering the extrusion up to its maximum height.
Segment interpolation curve: controls how each segment along the extrusion’s height will conform to the linear taper towards the top of the extrusion (the taper controlled by the “scale %” value).
Selection affect curve: soft selection values will be interpolated along this curve.
Relative to area: the amount to scale will be relative to the area of the face.
Area: the target face area.
Invert: inverts the effect of the face area multiplier.
Average: the average selection weight of a face’s vertices will be used to control the scale amount.
Per-Vertex: the scale amount of each face’s vertex will be individually controlled by the vertex’s selection weight.