Function GetSplineParams3( _
   ByVal ForceNonPeriodic As System.Boolean _
) As System.Object

Dim instance As ISketch
Dim ForceNonPeriodic As System.Boolean
Dim value As System.Object
 
value = instance.GetSplineParams3(ForceNonPeriodic)

System.object GetSplineParams3( 
   System.bool ForceNonPeriodic
)

System.Object^ GetSplineParams3( 
&   System.bool ForceNonPeriodic
) 

Parameters

ForceNonPeriodic

True to attempt to convert all non-periodic splines to periodic, false to not

Return Value

See ISketch::GetSketchSegments or ISketch::IEnumSketchSegments for access to individual ISketchSegment and ISketchSpline objects.

The return value is an array of doubles containing data for all the splines in the sketch:

[ packedDouble1, packedDouble2, ControlPoint1[Dimension elements], ControlPoint2[Dimension elements],... knot1, knot2,..., packedDouble3, packedDouble4, packedDouble5, ]

packedDouble1 and packedDouble2

The first two array elements for each spline contain four integer values holding information that describes the rest of the data in that spline's parameters:

 

Spline Element	Packed Data
	low part	high part
0	Dim	Order
1	nCtrlPoints	Periodic

 

where: 

• Dim is the number of dimensions in which the spline is defined

• Order is the order of the spline

• nCtrlPoints is the number of control points

• Periodic is 1 for a closed spline or 0 for an open spline
  

NOTE: For information about unpacking double arrays into integer pairs, see:

• Unpacking Double Arrays into Integer Paris in VB.NET and Visual Basic
• Unpacking Double Arrays into Integer Pairs in C++
• Unpacking Double Arrays into Integer Pairs in C#

 

ControlPoint#

The ControlPoint data (in the sketch coordinate system) follows the two packed data elements.

knots#

The number of knots depends on whether the spline is periodic or not:

packedDouble3, packedDouble4, and packedDouble5

The last three array elements for each spline contain five integer values holding style and layer information:

where: 

• i is the index following the last Knot or [2 + numKnots + numControlPointDoubles * Dim]

• Color is the COLORREF value describing the color used for the ith spline

• lineStyle is the line style used for the ith spline. Valid values can be found in the swLineStyles_e enumeration

• lineWidth is line width used for the ith spline. Valid values can be found in the swLineWeights_e enumeration

• Layer is an integer index to the layer that the ith spline is on

• layerOverride is integer with bit flags set to determine which properties, if any, have been overridden or should be overridden.

Therefore, the size of the data for each spline is given by:

2 + numKnots + numControlPointDoubles * Dim + 3