IfcBoundingBox
Definition from ISO/CD 10303-42:1992: A box domain is an
orthogonal box parallel to the axes of the geometric coordinate system which
may be used to limit the domain of a half space solid. A box domain is
specified by the coordinates of the bottom left corner, and the lengths of the
sides measured in the directions of the coordinate axes.
Definition from IAI: Every semantic object having a physical
extent might have a minimum default representation of a bounding box. The
bounding box is therefore also used as minimal geometric representation for any
geometrically represented object. Therefore the IfcBoundingBox is
subtyped from IfcGeometricRepresentationItem.
NOTE: Corresponding STEP entity :
box_domain, please refer to ISO/IS 10303-42:1994, p. 186 for the final
definition of the formal standard. In IFC the bounding box can also be used
outside of the context of an IfcBoxedHalfSpace.
HISTORY: New entity in IFC Release 1.0
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Illustration:
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The IfcBoundingBox
is defined with an own location which can be used to place the
IfcBoundingBox relative to the geometric coordinate system. The
IfcBoundingBox is defined by the lower left corner (Corner) and
the upper right corner (XDim, YDim, ZDim measured within the parent
co-ordinate system). |
EXPRESS specification:
Attribute definitions:
| Corner
|
:
|
Location of the bottom left corner (having the minimum values).
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| XDim
|
:
|
Length attribute (measured along the edge parallel to the X Axis)
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| YDim
|
:
|
Width attribute (measured along the edge parallel to the Y Axis)
|
| ZDim
|
:
|
Height attribute (measured along the edge parallel to the Z Axis).
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| Dim
|
:
|
The space dimensionality of this class, it is always 3.
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Inheritance graph