Blast surface node

Deletes primitives, points, edges or breakpoints.

All Parameters Example files

See also: Delete, Dissolve

Blast is designed to remove geometry that you select interactively in the viewport, as opposed to Delete which is a more procedural tool.

Parameters

Group

Subset of the input geometry to delete.

Group Type

The type of entities to delete.

Guess from group

Infer which type of entity to delete based on the contents of the group.

Breakpoints

Delete breakpoints.

Edges

Delete edges.

Points

Delete points.

Primitives

Delete primitives.

Recompute Normals

The removal of geometry can change the effective normals on the surface. This option will recompute any point normals to ensure they reflect the result of the deletion.

Delete Non Selected

Negates the sense of the selection. Instead of deleting anything selected, will delete anything not selected. This is very useful to isolate some geometry.

Note that Breakpoints groups cannot be inverted with this toggle.

Fill Simple Holes

Caps complete holes that result from the deletion of points. A hole is said to be complete if it is a negative polygon i.e it has borders. This option works only with non-manifold geometry. After capping, it removes degenearate polygons that are formed during the deletion.

Example files

Blast

$HFS/houdini/help/examples/nodes/sop/blast/Blast.cmd

Load | Launch

This network contains a simple example of how the Blast SOP can be used to delete elements of your model.

The Blast SOP can be used to delete points, edges, polygons and breakpoints using designated patterns.

Usages in other examples

Example name Example for
CreaseBasic

Crease surface node

Load | Launch

PolyKnitBasic

Poly Knit surface node

Load | Launch