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version 6.0
DR Calculate perimeter (area; scope) 
Real
| Parameter | Type | Description | |
| area | Longint | | 4D Draw area |
| scope | Longint | | -1 = All, 0 = Selected, >0 = Object ID |
| Function result | Real |  | Perimeter of the objects described by scope |
Description
The command DR Calculate perimeter returns the perimeter of the objects described by scope.
• If scope equals -1, DR Calculate perimeter returns the perimeter of all objects in the document.
• If scope equals 0, DR Calculate perimeter returns the perimeter of the selected objects.
• If scope is greater than 0, it must be equal to a specific object's ID; DR Calculate perimeter returns the perimeter of the object.
If the object does not exist, DR Calculate perimeter returns -32000 and DR Error returns error number 2.
Example
The following example calculates the perimeter of the selected objects in area.
$Perimeter := DR Calculate perimeter (Area;0)
See Also
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