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SetOffset Method

Sets the offset of the analytical model at end.

Namespace: Autodesk.Revit.DB.Structure
Assembly: RevitAPI (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0)
Since: 2011

Syntax

C# 
public void SetOffset(
	AnalyticalElementSelector selector,
	XYZ offset
)
Visual Basic 
Public Sub SetOffset ( _
	selector As AnalyticalElementSelector, _
	offset As XYZ _
)
Visual C++ 
public:
void SetOffset(
	AnalyticalElementSelector selector, 
	XYZ^ offset
)

Parameters

selector
Type: Autodesk.Revit.DB.Structure AnalyticalElementSelector
End of analytical model to offset.
offset
Type: Autodesk.Revit.DB XYZ
New offset for end of analytical model.

Examples

Copy C# 
// extend the analytical model by 1 foot at each end. Direction of offset is parallel to the analytical model curve.
AnalyticalModel model = familyInstance.GetAnalyticalModel();
Curve curve = model.GetCurve();
XYZ tangentDirection0 = curve.ComputeDerivatives(0, true).BasisX.Normalize().Negate();
XYZ tangentDirection1 = curve.ComputeDerivatives(1, true).BasisX.Normalize();
model.SetOffset(AnalyticalElementSelector.StartOrBase, tangentDirection0);
model.SetOffset(AnalyticalElementSelector.EndOrTop, tangentDirection1);
Copy VB.NET 
' extend the analytical model by 1 foot at each end. Direction of offset is parallel to the analytical model curve.
Dim model As AnalyticalModel = familyInstance.GetAnalyticalModel()
Dim curve As Curve = model.GetCurve()
Dim tangentDirection0 As XYZ = curve.ComputeDerivatives(0, True).BasisX.Normalize().Negate()
Dim tangentDirection1 As XYZ = curve.ComputeDerivatives(1, True).BasisX.Normalize()
model.SetOffset(AnalyticalElementSelector.StartOrBase, tangentDirection0)
model.SetOffset(AnalyticalElementSelector.EndOrTop, tangentDirection1)

Exceptions

Exception Condition
Autodesk.Revit.Exceptions ArgumentNullException A non-optional argument was null
Autodesk.Revit.Exceptions ArgumentOutOfRangeException A value passed for an enumeration argument is not a member of that enumeration
Autodesk.Revit.Exceptions InvalidOperationException Function only work for curve-based elements.

See Also