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In addition to simply deleting unwanted parts of a model, this operator is useful for culling primitives from very dense geometry to speed up cooking of nodes downstream.
This operation can also delete profile groups (for example,
0.5 1.2-3.9) and mixed groups (for example,
0 0.5 4-12 1.2-3.9).
causing the remaining hierarchy to update. By deleting the root of a paste hierarchy, the whole hierarchy becomes undone.
Select the object at the object level or components of the object at the geometry level.
Click the Delete tool on the Modify tab.
This tool is mapped to the ⌦ Del key.
This node deletes entries in the Group field and any polygons matching the criteria in the Operation, Entity, and Geometry Type fields.
Subset of the input geometry to delete, in addition to those parts matching the other criteria.
How the rules below affect the geometry.
Delete the geometry that matches the rules below.
Delete the geometry that doesn’t match the rules below.
Delete the points associated with each selected edge.
Type of geometry to delete.
Turns on the controls for this tab and allows you to delete by point/primitive/edge numbers.
How to choose which points/primitives/edges to delete.
Delete by pattern
Delete points/primitives whose numbers match a pattern string. Edges use primitive numbers.
Delete by range
Delete points/primitives whose numbers fall within a certain range, and/or delete every few points/primitives. Edges use primitive numbers.
Delete by expression
Evaluate an expression for each point/primitive and delete it if the expression returns true.
(When Operation is “Delete by pattern”) Deletes points/primitives/edges that match this pattern.
(When Operation is “Delete by range”) The range of geometry to be deleted.
(When Operation is “Delete by range”) Deletes every (number in the left field) points/primitives for every (number in the right field) points/primitives in the input. Edges are ranged by primitive numbers.
Turns on the controls for this tab and allows you to delete entities inside a bounding volume.
Shape of bounding volume.
Delete points/primitives/edges within a bounding box.
Delete points/primitives/edges within a bounding sphere.
Size of the bounding volume.
Center of the bounding volume.
Turns on the controls for this tab and allows you to delete entities based on their normals.
Delete points/primitives/edges with normals pointing in this direction. Use the Spread angle
Angle of deviation from specified direction for which geometry will be deleted.
Specifies a camera. Polygons that face away from the camera are deleted.
Turns on the controls for this tab and allows you to delete degenerate entities.
Delete Degenerate Primitives
Remove repeated references of points and vertices within faces and then delete all degenerate primitives.
Delete Zero-Area Faces
Delete faces with surface area less than the tolerance. For area, the tolererance is squared, so the provided tolerance is the side of a square quad that will not be deleted.
Treat Open Faces as Closed
Delete open faces with perimeter less than the tolerance.
The length to consider zero area or zero perimeter. For area, this is squared, so becomes the side of the smallest square that would be considered zero area.
Turns on the controls for this tab and allows you to delete elements based on a random value computed on each element.
The initial seed used to determine which elements are deleted.
Use Seed Attribute
Whether to use an integer attribute on the specified elements that is used in place of the element number when determining whether an element is deleted.
An integer attribute on the specified elments that is used in place of the element number when determining whether an element is deleted. For edges, the point numbers or the attribute value on both points is combined and used to determine the seed for each edge. For vertices, the point number or attribute value on the point that the vertex belongs to is used to determine the seed for each vertex.
The approximate percentage of elements to remove (or keep if Operation is Delete Non-Selected). The Global Seed is combined with the Seed Attribute or element number if Use Seed Attribute is disabled, to determine a seed value for each element. This seed value is then used to find a value between 0 and 100 for each element, and any element with a value less than or equal to the Percent is included in the group.
Delete Unused Groups
Remove any groups that are left empty after deleting points/primitives/edges.
By default, if you delete a lot of polygons, the points that are no longer in use are also deleted. Turning on Keep Points will keep these points floating in space.
The number minus one of points or primitives, depending on the “Entity” choice.
This example demonstrates how the Delete SOP is used to remove specified geometry from a scene.
Geometry may be deleted by Point or Primitive Numbers, by Group, or by position within a Bounding Box.