IfcDistributionPortTypeEnum
此枚举标识不同类型的分发端口。它用于通过端口的通用功能指定端口，该功能确定适用的属性集和兼容系统。
IFC4增加的枚举类型。
| Constant | Description |
|---|---|
| CABLE | Connection to cable segment or fitting for distribution of electricity. |
| CABLECARRIER | Connection to cable carrier segment or fitting for enclosing cables. |
| DUCT | Connection to duct segment or fitting for distribution of air. |
| PIPE | Connection to pipe segment or fitting for distribution of solid, liquid, or gas. |
| USERDEFINED | User-defined port type. |
| NOTDEFINED | Undefined port type. |
EXPRESS Specification
TYPE IfcDistributionPortTypeEnum = ENUMERATION OF (
CABLE,
CABLECARRIER,
DUCT,
PIPE,
USERDEFINED,
NOTDEFINED);
END_TYPE;
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