The Split Block option splits the blocking at the selected edge.
- Visible
splits only blocks that are visible, where visibility is managed by blanking blocks in the graphical window or by using the index control.
- Selected
splits only the selected blocks.
- Copy distribution from nearest parallel edge
copies the edge distribution (initial heights, ratios and bunching law) from the nearest parallel index to the new edges created by the split operation. This is useful when adding splits to a blocking after already setting up advanced distributions on existing edges. With this option disabled, the default edge distribution ( ) is used. Parallel node counts are always used when splitting a block.
- Project vertices
enables the automatic projection of the new vertices to the underlying geometry.
- Move O-Grid nodes
moves internal nodes (that are not projecting) which are attached via an Ogrid edge to external nodes (nodes that are projecting) relative to the projection.
Note: This option is available only if Project vertices is enabled.
- Split at nearest meshed node
causes the split to happen at a given node and propagate with that node to other parallel edges. Node distribution on the edges on either side of the split is unaffected. Node distribution along the new split is inherited from the nearest parallel edge.
- Split Method
- Screen select
allows you to select the position manually where the block is to be split.
- Prescribed point
allows you to split the edges through the selected point.
- Relative
allows you to split the edge with the given parameter.
- Absolute
allows you to split the edge in proportion to the maximum grid length in the edge direction. Edge direction corresponds to minimum vertices number to maximum vertex number.
- Curve parameter
allows you to split the edge through a selected point on a curve. Select the edge to be split first, and then the curve at the point through which the split will be placed.
Note: The Split Block option will only propagate splits through mapped faces, and will terminate at free faces. For 2D blocking, all mapped blocks attached edge to edge will be split, but the split will terminate at any free block. For 3D blocking, a split will propagate through mapped blocks and swept blocks, if the split is along the sweeping direction. A split in 3D blocking will terminate at free 3D blocks and swept blocks, if the split is in any direction other than the sweeping direction.