Namespace: Autodesk.Revit.DB.IFC Class: ExporterIFCUtils

ExporterIFCUtils.IsCurveLoopConvexWithOpenings

Method

Description:
Checks if the region bounded by the input curve loop can be represented as the subtraction of 0 or more convex polygons from a base convex polygon.

Remarks:
This function is intended to be used to determine if the geometry of a wall with an elevation profile can be successfully represented as a vertical extrusion with one or more openings removed. If this function is to return true, the subtracting polygons must each have at least one edge coincident with the base convex polygon. Before the check is performed, this input curve will be trimmed by the range extents of the wall, if any.

Syntax

public static bool IsCurveLoopConvexWithOpenings(
	CurveLoop inputCurveLoop,
	Wall wall,
	IFCRange range,
	out bool loopIsDegenerate
)

Public Shared Function IsCurveLoopConvexWithOpenings ( 
	inputCurveLoop As CurveLoop,
	wall As Wall,
	range As IFCRange,
	<OutAttribute> ByRef loopIsDegenerate As Boolean
) As Boolean

public:
static bool IsCurveLoopConvexWithOpenings(
	CurveLoop^ inputCurveLoop, 
	Wall^ wall, 
	IFCRange^ range, 
	[OutAttribute] bool% loopIsDegenerate
)

static member IsCurveLoopConvexWithOpenings : 
        inputCurveLoop : CurveLoop * 
        wall : Wall * 
        range : IFCRange * 
        loopIsDegenerate : bool byref -> bool

Parameters

Parameter	Type	Description
inputCurveLoop	CurveLoop	The input curve loop. It is intended that this curve loop have been obtained from the elevation profile of a wall.
wall	Wall	The wall from which the curve loop was obtained.
range	IFCRange	The range extents of the wall.
loopIsDegenerate	Boolean	If the function returns false but this returns true, the loop could be obtained but was degenerate. Thus there is no extrusion that can be produced.

Return Value

Type	Description
Boolean	True if the region can be represented by a boolean combination of polygons, false otherwise.

Exceptions

Exception	Condition
ArgumentNullException	A non-optional argument was null