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AddCurveToRegion(RasterRegionXForm,RasterCollection<LeadPoint>,Single,LeadFillMode,RasterRegionCombineMode) Method
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Leadtools Namespace > RasterImage Class > AddCurveToRegion Method : AddCurveToRegion(RasterRegionXForm,RasterCollection<LeadPoint>,Single,LeadFillMode,RasterRegionCombineMode) Method



xform
RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
points
Collection of LeadPoint objects. The points in the array must be in the order in which the vertices of the polygon are connected. To create the line that closes the polygon, the last point in the array is connected to the first point of the array.
tension
A value that specifies the amount that the curve bends between control points. Values greater than 1 produce unpredictable results.
fillMode

Indicates how to handle complex crossing lines.

Value Meaning
LeadFillMode.Winding All pixels that are inside the resulting exterior lines are in the region.
LeadFillMode.Alternate The region includes the area between odd-numbered and even-numbered polygon sides on each scan line.

combineMode
The action to take regarding the existing image region, if one is defined.
xform
RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
points
Collection of LeadPoint objects. The points in the array must be in the order in which the vertices of the polygon are connected. To create the line that closes the polygon, the last point in the array is connected to the first point of the array.
tension
A value that specifies the amount that the curve bends between control points. Values greater than 1 produce unpredictable results.
fillMode

Indicates how to handle complex crossing lines.

Value Meaning
LeadFillMode.Winding All pixels that are inside the resulting exterior lines are in the region.
LeadFillMode.Alternate The region includes the area between odd-numbered and even-numbered polygon sides on each scan line.

combineMode
The action to take regarding the existing image region, if one is defined.
Creates or updates the image region by adding a curved region.

Syntax

Visual Basic (Declaration) 
Overloads Public Sub AddCurveToRegion( _
   ByVal xform As RasterRegionXForm, _
   ByVal points As RasterCollection(Of LeadPoint), _
   ByVal tension As Single, _
   ByVal fillMode As LeadFillMode, _
   ByVal combineMode As RasterRegionCombineMode _
) 
Visual Basic (Usage)Copy Code
Dim instance As RasterImage
Dim xform As RasterRegionXForm
Dim points As RasterCollection(Of LeadPoint)
Dim tension As Single
Dim fillMode As LeadFillMode
Dim combineMode As RasterRegionCombineMode
 
instance.AddCurveToRegion(xform, points, tension, fillMode, combineMode)
C++/CLI 
public:
void AddCurveToRegion( 
   RasterRegionXForm^ xform,
   RasterCollection<LeadPoint>^ points,
   float tension,
   LeadFillMode fillMode,
   RasterRegionCombineMode combineMode
) 

Parameters

xform
RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
points
Collection of LeadPoint objects. The points in the array must be in the order in which the vertices of the polygon are connected. To create the line that closes the polygon, the last point in the array is connected to the first point of the array.
tension
A value that specifies the amount that the curve bends between control points. Values greater than 1 produce unpredictable results.
fillMode

Indicates how to handle complex crossing lines.

Value Meaning
LeadFillMode.Winding All pixels that are inside the resulting exterior lines are in the region.
LeadFillMode.Alternate The region includes the area between odd-numbered and even-numbered polygon sides on each scan line.

combineMode
The action to take regarding the existing image region, if one is defined.

Example

Remarks

To update an existing region, you specify how the new region is to be combined with the existing one using the combineMode parameter. For more information, refer to RasterRegionCombineMode.

For more information, refer to Creating a Region.

For more information, refer to Saving A Region.

For more information, refer to Working with the Existing Region.

Requirements

Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only), Windows Phone 7

See Also