Procedurally select and grow polygon selection, groups in Houdini

Procedurally select and grow polygon selection, groups

grow or shrink polygons selection:

with group expand node

add group node for a poly selection name it: start add group expand node group name: set some base group: start steps: set some

manually

shift - G to grow it shift - S to shrink it

selection with bounding box:

add a group node below some geo and check display flag (group type: points) keep in bounding regions -> check enable bounding type: bounding sphere then move sphere/box in viewport for poly selection

selection with normal direction:

keep by normals -> check enable direction: 0 1 0 (to select all upwards points normals) spread angle: 60

bevel procedurally afterwards

(create the group) add poly bevel node group: someGroup exclusion: check ignore flat edges

excluding/inverting a group

group: !group1 (or use group invert node)

selecting patterns

add group expression node group type: points VEXpression -> click dropdown to select

select only the edges, for bevel

add group node group type: edges uncheck base group check include by edges min angle: 20