Push Pull

Determines how the extrusion distance is set. You can use the following methods:

• Click in Viewport: Mouse movement controls extrusion height and depth. Click in the viewport to complete the extrusion and exit the operation. Using the cursor, you can align the extrusion distance to objects in the level. An additional line from the center of the selection indicates the direction of measurement for the extrusion.
• Fixed: Set extrusion height or depth from a numerical input (Distance).

Determines the direction vertices move during extrusion before the boolean operation. You can use the following methods:

• Vertex Normals: Follow the vertex normals regardless of selection.
• Single Direction: Move all triangles in the same direction regardless of their normals.
• Selected Triangle Normals: Take the angle-weighted average of the selected triangles around each extruded vertex to determine vertex movement direction.
• Selected Triangle Normals Even: Similar to Selected Triangle Normals, but also adjust the distance moved in an attempt to keep triangles parallel to their original facing.
  • Max Distance Scale Factor: Controls the maximum distance vertices can move from the target distance in order to stay parallel with their source triangles.

See below for examples.

Controls whether extruding an entire open-border patch should create a solid or open shell.

• True (enable): Open-border faces are extruded as a solid shell (no holes in the mesh).
• False (disable): Open-border faces are extruded with an open shell.

The direction to measure the distance of extrusion when Selected Triangle Normals, Vertex Normals, or Selected Triangle Normals Even is active. The extrusion height is set based on the mouse location on the respective axis. When Single Direction is active, the direction of the extrusion is based on Measure Direction. The setting is only available when Distance Mode is set to Click in Viewport. You can choose from the following directions:

• Selection Normal
• World X
• World Y
• World Z
• Local X
• Local Y
• Local Z

Considers edge colinearity for determining how side triangles connecting the extruded face are grouped when extruded faces touch the mesh border.

• If true, side triangles touching the mesh border are grouped per colinear section of boundary.
• If false, all side triangles touching the mesh border are grouped as one.

For example, when true, extruding a flat rectangle gives four different PolyGroups on its side rather than one connected PolyGroup.