Autodesk 00128-051462-9310 User Guide - Page 1632

7 For Offset boundaries, select how the 4 space boundaries (base, net, usable, and gross boundary) are offset from each other: ■ Manual: The offsets of the net, usable, and gross boundaries from the base boundary can be manually edited with grips. Each boundary has its own set of grips, except for the base boundary, which is generated from the bounding objects. ■ By Style: The offsets of the net, usable, and gross boundaries from the base boundary are defined in the space style. The boundaries have no grips. For more information, see "Specifying Space Boundary Offsets in a Space Style" on page 1687. ■ By Standard: The offsets of the net, usable, and gross boundaries from the base boundary are defined by the boundary offset calculation standard selected for the drawing. The boundaries have no grips. For more information, see "Specifying an Area Calculation Standard for a Drawing" on page 1629. 8 For Create type, select Generate. 9 To add a calculation modifier to the space, click the setting for Calculation modifiers, and select one or more calculation modifiers to add to the space. For information about calculation modifiers, see "Adding and Removing Calculation Modifiers for Spaces" on page 1724. 10 Before selecting options under the Generate Space category, scroll down to the Component Dimensions category, and for Geometry type, select Freeform. The geometry type determines which other options are available for generating the space, so the geometry type should be defined before proceeding with the remaining settings. 11 For Boundary set, specify how the bounding objects for the space should be selected: If you want to... Then... let the software detect spaces in the visible drawing area select Reset visible boundaries. select bounding objects manually in the drawing select Select boundaries. When you generate a 3D freeform space, the following properties are predefined and read-only: ■ Filter boundary set: 3D freeform spaces can only be generated from bounding AEC objects. Regardless of what selection is displayed here, the boundary set used is always AEC Objects. For a list of objects included in that selection, see "Bounding Objects for Associative 3D Freeform Spaces" on page 1588. If an AEC object has been defined as non-bounding in its style or its object properties, it will be filtered out, regardless of whether it is included in the boundary set. For more information, see "Setting an Object Style as Bounding" on page 1590 and "Setting an Object Instance as Bounding" on page 1590. IMPORTANT If your selection set includes walls with different bounding conditions, make sure to put the walls in different cleanup groups. If a non-bounding wall intersects with a bounding wall, and they are in the same cleanup group, the cleanup with the non-bounding wall will create a hole in the bounding wall through which the space leaks. As a result, no spaces can be generated even if the geometry would otherwise be closed. ■ Ignore holes: You cannot explicitly exclude objects from the geometry of a 3D freeform space. If an object is a valid bounding object for 3D freeform spaces and is set to be bounding, it will be deducted from the surrounding space. In any other case, the object will be ignored during the generation of the surrounding space. ■ Maximum gap size: No gaps in the bounding objects are allowed in the generation of 3D freeform spaces. If the bounding objects are not completely closed, no valid boundary for the space is found. 12 If you need to generate spaces within boundaries that already contain a space, select Yes for Allow overlapping spaces. 13 Expand Component Dimensions. 1592 | Chapter 36 Spaces