UnitsManager.evaluateExpression Method

Parent Object: UnitsManager
Defined in namespace "adsk::core" and the header file is <Core/Application/UnitsManager.h>

Description

Gets the value (in internal units) of the expression.

Syntax

Python
C++

"unitsManager_var" is a variable referencing a UnitsManager object.

# Uses no optional arguments.
returnValue = unitsManager_var.evaluateExpression(expression)

# Uses optional arguments.
returnValue = unitsManager_var.evaluateExpression(expression, units)

Return Value

Type	Description
double	Returns -1 AND GetLastError will return ExpressionError in the event of an error.

Parameters

Name	Type	Description
expression	string	EvaluateExpression("1cm + 1in") -> 3.54 EvaluateExpression("1") -> -> depends on the DistanceUnits, with "mm" it gives 0.1
units	string	If not supplied the units will default to the default length specified in the preferences. This is an optional argument whose default value is "DefaultDistance".

Samples

Name	Description
Use inputBox to get value and evaluateExpression to validate it	Uses the UserInterface.inputBox function to get a string from the user and then validates that the strinng entered is a valid expression by using the UnitsManager.evaluateExpression function.

Version

Introduced in version August 2014