Disk
Another way to select 2D geometric entities is to define an enclosing Disk () to select geometric entities that are completely or partially inside the disk. To add this node, right-click the Definitions node and choose Selections>Disk.
Geometric Entity Level
Select the Level for the geometric entities: Domain, Boundary, or Point.
If Boundary is selected, also select the Group by continuous tangent check box to extend the selection to all adjacent boundaries that have continuous tangents (an angle less than the value in the Angular tolerance field) at their junctions.
When the Group by continuous tangent check box is selected, set the tolerance on the continuity condition in the Angular tolerance field as the maximum angle between two boundaries that are considered as having continuous tangents (a value between 0 and 180 degrees; the default value is 5 degrees).
See Output Entities for details about how the behavior depends on the condition for which the selection considers the group of entities to be enclosed.
Input Entities
The Entities list defaults to All, which bases the selection on all entities of the selected type.
Select From selections to base the selection on other defined selections. Then, in the Selections list, add the selections for which you want to create a selection of geometric entities from those selections that are located within the disk that you define for the resulting selection. Click the Add button () to open an Add dialog box that contains selections of the chosen geometric entity level that appear earlier in the geometry sequence. Use the Move Up (), Move Down (), and Delete () buttons to organize the list.
Disk Center
Position the center of the disk by entering the center position in the x, and y fields (the unit is the length unit for the geometry).
Size and Shape
Define the dimensions of the disk by entering the outer and inner radius in the Outer radius and Inner radius fields. The unit is the length unit for the geometry. For a solid disk, leave the inner radius at 0. To define a sector of a full disk, use the Start angle (default: 0) and End angle (default: 360 degrees) fields. The selection includes entities that intersect or are contained in the disk sector (depending on the settings under Output Entities below).
Output Entities
For the selections made under Input Entities, define the dimension of the disk and select the condition for the geometric entities to be selected. Choose an option from the Include entity if list: Entity intersects disk (the default), Entity inside disk, Some vertex inside disk, or All vertices inside disk.
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If Entity intersects disk is kept as the default, it includes all geometric entities that intersect the enclosing disk; that is, the selection includes all entities that are partially or completely inside the disk. If in addition the Group by continuous tangent check box is selected for a boundary under the Geometric Entity Level section, all entities in each group are selected if any entity in the group intersects the disk.
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For Entity inside disk it includes all geometric entities that are completely inside the enclosing disk. If in addition the Group by continuous tangent check box is selected for a boundary under the Geometric Entity Level section, the entities in each group are selected only if all entities in the group are completely inside the disk.
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For Some vertex inside disk it includes all geometric entities where at least some vertex is inside the enclosing disk. If in addition the Group by continuous tangent check box is selected for a boundary under the Geometric Entity Level section, all entities in each group are selected if any entity in the group has at least some vertex inside the disk.
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For All vertices inside disk it includes all geometric entities where all vertices are inside the enclosing disk. If the Group by continuous tangent check box is selected for a boundary under the Geometric Entity Level section, the entities in each group are selected only if all entities in the group have all vertices inside the disk. This selection might differ slightly compared to when selecting Entity inside disk if the geometric entity is outside the disk at some points between the vertices.
Color
In this section, choose a color from the Color list for use with this selection. See Selection Colors.
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Creating Named Selections in the Geometry Sequence
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Disk Selection (Geometry Sequences)