Medical Features > WPF Annotations > Annotation Objects > WPF AnnCurveObject

WPF AnnCurveObject

Note: This topic is for Document/Medical](/sdk/product-overview) only. The curve annotation object (AnnCurveObject) is a sequence of points that are joined by cubic polynomials such that adjacent polynomials are continuous at the first and second derivatives. The result is a smooth, continuous curve going through all the points. With the automated functions, each curve is formed with a mouse click, and the object is completed on a double-click. Programmatically, the points that define this curve object are contained in the Points property, inherited from the AnnPolylineObject class. Each object has a transformation associated with it. This transform is accessed through the RenderTransform property. The [TransformMode property indicates how the transform will be used to transform The WPF annotation object. The AnnCurveObject class inherits a number of properties from the AnnObject class that provide support for font, pen and brush characteristics. These properties are listed below:

Fill
FillBrush
Stroke
StrokeBrush
StrokeThickness

The name of the curve object can be controlled using the following properties, inherited from the AnnObject class:

Header
HeaderBackground
HeaderDecorations
HeaderFontFamilyName
HeaderFontSize
HeaderFontStretch
HeaderFontStyle
HeaderFontWeight
HeaderForeground
HeaderOffset
IsHeaderRestricted
IsHeaderVisible

The boundaries and location of the curve object can be controlled using the following properties, also inherited from the AnnObject class:

Origin

An object can be part of a group annotation object or part of a container object. It cannot be part of both a group and a container at the same time. The following properties can also be used to programmatically set characteristics of an AnnCurveObject class object: