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ArcSegment Class

 

Represents an elliptical arc between two points.

Namespace:   System.Windows.Media
Assembly:  PresentationCore (in PresentationCore.dll)

System::Object
  System.Windows.Threading::DispatcherObject
    System.Windows::DependencyObject
      System.Windows::Freezable
        System.Windows.Media.Animation::Animatable
          System.Windows.Media::PathSegment
            System.Windows.Media::ArcSegment

public ref class ArcSegment sealed : PathSegment

NameDescription
System_CAPS_pubmethodArcSegment()

Initializes a new instance of the ArcSegment class.

System_CAPS_pubmethodArcSegment(Point, Size, Double, Boolean, SweepDirection, Boolean)

Initializes a new instance of the ArcSegment class.

NameDescription
System_CAPS_pubpropertyCanFreeze

Gets a value that indicates whether the object can be made unmodifiable. (Inherited from Freezable.)

System_CAPS_pubpropertyDependencyObjectType

Gets the DependencyObjectType that wraps the CLR type of this instance. (Inherited from DependencyObject.)

System_CAPS_pubpropertyDispatcher

Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject.)

System_CAPS_pubpropertyHasAnimatedProperties

Gets a value that indicates whether one or more AnimationClock objects is associated with any of this object's dependency properties.(Inherited from Animatable.)

System_CAPS_pubpropertyIsFrozen

Gets a value that indicates whether the object is currently modifiable. (Inherited from Freezable.)

System_CAPS_pubpropertyIsLargeArc

Gets or sets a value that indicates whether the arc should be greater than 180 degrees.

System_CAPS_pubpropertyIsSealed

Gets a value that indicates whether this instance is currently sealed (read-only).(Inherited from DependencyObject.)

System_CAPS_pubpropertyIsSmoothJoin

Gets or sets a value that indicates whether the join between this PathSegment and the previous PathSegment is treated as a corner when it is stroked with a Pen. (Inherited from PathSegment.)

System_CAPS_pubpropertyIsStroked

Gets or sets a value that indicates whether the segment is stroked. (Inherited from PathSegment.)

System_CAPS_pubpropertyPoint

Gets or sets the endpoint of the elliptical arc.

System_CAPS_pubpropertyRotationAngle

Gets or sets the amount (in degrees) by which the ellipse is rotated about the x-axis.

System_CAPS_pubpropertySize

Gets or sets the x- and y-radius of the arc as a Size structure.

System_CAPS_pubpropertySweepDirection

Gets or sets a value that specifies whether the arc is drawn in the Clockwise or Counterclockwise direction.

NameDescription
System_CAPS_pubmethodApplyAnimationClock(DependencyProperty^, AnimationClock^)

Applies an AnimationClock to the specified DependencyProperty. If the property is already animated, the SnapshotAndReplace handoff behavior is used.(Inherited from Animatable.)

System_CAPS_pubmethodApplyAnimationClock(DependencyProperty^, AnimationClock^, HandoffBehavior)

Applies an AnimationClock to the specified DependencyProperty. If the property is already animated, the specified HandoffBehavior is used.(Inherited from Animatable.)

System_CAPS_pubmethodBeginAnimation(DependencyProperty^, AnimationTimeline^)

Applies an animation to the specified DependencyProperty. The animation is started when the next frame is rendered. If the specified property is already animated, the SnapshotAndReplace handoff behavior is used.(Inherited from Animatable.)

System_CAPS_pubmethodBeginAnimation(DependencyProperty^, AnimationTimeline^, HandoffBehavior)

Applies an animation to the specified DependencyProperty. The animation is started when the next frame is rendered. If the specified property is already animated, the specified HandoffBehavior is used. (Inherited from Animatable.)

System_CAPS_pubmethodCheckAccess()

Determines whether the calling thread has access to this DispatcherObject.(Inherited from DispatcherObject.)

System_CAPS_pubmethodClearValue(DependencyProperty^)

Clears the local value of a property. The property to be cleared is specified by a DependencyProperty identifier. (Inherited from DependencyObject.)

System_CAPS_pubmethodClearValue(DependencyPropertyKey^)

Clears the local value of a read-only property. The property to be cleared is specified by a DependencyPropertyKey. (Inherited from DependencyObject.)

System_CAPS_pubmethodClone()

Creates a modifiable clone of this ArcSegment, making deep copies of this object's values. When copying dependency properties, this method copies resource references and data bindings (but they might no longer resolve) but not animations or their current values.

System_CAPS_pubmethodCloneCurrentValue()

Creates a modifiable clone of this ArcSegment object, making deep copies of this object's current values. Resource references, data bindings, and animations are not copied, but their current values are.

System_CAPS_pubmethodCoerceValue(DependencyProperty^)

Coerces the value of the specified dependency property. This is accomplished by invoking any CoerceValueCallback function specified in property metadata for the dependency property as it exists on the calling DependencyObject.(Inherited from DependencyObject.)

System_CAPS_pubmethodEquals(Object^)

Determines whether a provided DependencyObject is equivalent to the current DependencyObject.(Inherited from DependencyObject.)

System_CAPS_pubmethodFreeze()

Makes the current object unmodifiable and sets its IsFrozen property to true. (Inherited from Freezable.)

System_CAPS_pubmethodGetAnimationBaseValue(DependencyProperty^)

Returns the non-animated value of the specified DependencyProperty.(Inherited from Animatable.)

System_CAPS_pubmethodGetAsFrozen()

Creates a frozen copy of the Freezable, using base (non-animated) property values. Because the copy is frozen, any frozen sub-objects are copied by reference. (Inherited from Freezable.)

System_CAPS_pubmethodGetCurrentValueAsFrozen()

Creates a frozen copy of the Freezable using current property values. Because the copy is frozen, any frozen sub-objects are copied by reference.(Inherited from Freezable.)

System_CAPS_pubmethodGetHashCode()

Gets a hash code for this DependencyObject.(Inherited from DependencyObject.)

System_CAPS_pubmethodGetLocalValueEnumerator()

Creates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject. (Inherited from DependencyObject.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodGetValue(DependencyProperty^)

Returns the current effective value of a dependency property on this instance of a DependencyObject. (Inherited from DependencyObject.)

System_CAPS_pubmethodInvalidateProperty(DependencyProperty^)

Re-evaluates the effective value for the specified dependency property(Inherited from DependencyObject.)

System_CAPS_pubmethodReadLocalValue(DependencyProperty^)

Returns the local value of a dependency property, if it exists. (Inherited from DependencyObject.)

System_CAPS_pubmethodSetCurrentValue(DependencyProperty^, Object^)

Sets the value of a dependency property without changing its value source. (Inherited from DependencyObject.)

System_CAPS_pubmethodSetValue(DependencyProperty^, Object^)

Sets the local value of a dependency property, specified by its dependency property identifier. (Inherited from DependencyObject.)

System_CAPS_pubmethodSetValue(DependencyPropertyKey^, Object^)

Sets the local value of a read-only dependency property, specified by the DependencyPropertyKey identifier of the dependency property. (Inherited from DependencyObject.)

System_CAPS_protmethodShouldSerializeProperty(DependencyProperty^)

Returns a value that indicates whether serialization processes should serialize the value for the provided dependency property.(Inherited from DependencyObject.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubmethodVerifyAccess()

Enforces that the calling thread has access to this DispatcherObject.(Inherited from DispatcherObject.)

NameDescription
System_CAPS_pubfieldSystem_CAPS_staticIsLargeArcProperty

Identifies the IsLargeArc dependency property.

System_CAPS_pubfieldSystem_CAPS_staticPointProperty

Identifies the Point dependency property.

System_CAPS_pubfieldSystem_CAPS_staticRotationAngleProperty

Identifies the RotationAngle dependency property.

System_CAPS_pubfieldSystem_CAPS_staticSizeProperty

Identifies the Size dependency property.

System_CAPS_pubfieldSystem_CAPS_staticSweepDirectionProperty

Identifies the SweepDirection dependency property.

NameDescription
System_CAPS_pubeventChanged

Occurs when the Freezable or an object it contains is modified. (Inherited from Freezable.)

Use a PathFigure object to store ArcSegment objects and other segments.

An elliptical arc is defined by its start and end points, x- and y-radius, x-axis rotation factor, a value indicating whether the arc should be greater than 180 degrees, and a value describing the direction in which the arc is drawn. The ArcSegment class does not contain a property for the starting point of the arc; it only defines the destination point of the arc it represents. The beginning point of the arc is the current point of the PathFigure to which the ArcSegment is added.

The following illustrations demonstrate the different end point, Size, and RotationAngle settings.

ArcSegments with different Point settings
ArcSegments with different Size settings
ArcSegments with different RotationAngle settings

For most arcs of a particular position, size, and rotation, there are four different arcs that can be drawn; the IsLargeArc and SweepDirection properties indicate which arc to use.

Of the four candidate arc sweeps, two represent large arcs with sweeps of 180 degrees or greater, and two represent smaller arcs with sweeps 180 degrees or less. If IsLargeArc is true, then one of the two larger arc sweeps is chosen; otherwise, if is false, one of the smaller arc sweeps is chosen. The remaining two arc candidates are each drawn in a different direction: Counterclockwise or Clockwise. The SweepDirection property specifies which one to use.

The following illustrations show different IsLargeArc and SweepDirection settings.

ArcSegments with different IsLargeArc settings

ArcSegment objects with different IsLargeArc settings

ArcSegments with different SweepDirection settings

ArcSegment objects with different SweepDirection settings

An ArcSegment is a type of Freezable object. For information about Freezable features, such as freezing and cloning, see the Freezable Objects Overview.

.NET Framework
Available since 3.0
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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