LineGeometry Class

Represents the geometry of a line.

Namespace:  System.Windows.Media
Assembly:  PresentationCore (in PresentationCore.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

'Declaration
Public NotInheritable Class LineGeometry _
	Inherits Geometry
<LineGeometry .../>

The LineGeometry type exposes the following members.

  NameDescription
Public methodLineGeometryInitializes a new instance of the LineGeometry class that has no length.
Public methodLineGeometry(Point, Point)Initializes a new instance of the LineGeometry class that has the specified start and end points.
Public methodLineGeometry(Point, Point, Transform)Initializes a new instance of the LineGeometry class.
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  NameDescription
Public propertyBoundsGets the axis-aligned bounding box of this LineGeometry. (Overrides Geometry.Bounds.)
Public propertyCanFreezeGets a value that indicates whether the object can be made unmodifiable. (Inherited from Freezable.)
Public propertyDependencyObjectTypeGets the DependencyObjectType that wraps the CLR type of this instance.  (Inherited from DependencyObject.)
Public propertyDispatcherGets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject.)
Public propertyEndPointGets or sets the end point of a line.
Public propertyHasAnimatedPropertiesGets a value that indicates whether one or more AnimationClock objects is associated with any of this object's dependency properties. (Inherited from Animatable.)
Public propertyIsFrozenGets a value that indicates whether the object is currently modifiable. (Inherited from Freezable.)
Public propertyIsSealedGets a value that indicates whether this instance is currently sealed (read-only). (Inherited from DependencyObject.)
Public propertyStartPointGets or sets the start point of the line.
Public propertyTransformGets or sets the Transform object applied to a Geometry. (Inherited from Geometry.)
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  NameDescription
Public methodApplyAnimationClock(DependencyProperty, AnimationClock)Applies an AnimationClock to the specified DependencyProperty. If the property is already animated, the SnapshotAndReplace handoff behavior is used. (Inherited from Animatable.)
Public methodApplyAnimationClock(DependencyProperty, AnimationClock, HandoffBehavior)Applies an AnimationClock to the specified DependencyProperty. If the property is already animated, the specified HandoffBehavior is used. (Inherited from Animatable.)
Public methodBeginAnimation(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.)
Public methodBeginAnimation(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.)
Public methodCheckAccessDetermines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.)
Public methodClearValue(DependencyProperty)Clears the local value of a property. The property to be cleared is specified by a DependencyProperty identifier. (Inherited from DependencyObject.)
Public methodClearValue(DependencyPropertyKey)Clears the local value of a read-only property. The property to be cleared is specified by a DependencyPropertyKey. (Inherited from DependencyObject.)
Public methodCloneCreates a modifiable clone of this LineGeometry, 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.
Public methodCloneCurrentValueCreates a modifiable clone of this LineGeometry object, making deep copies of this object's current values. Resource references, data bindings, and animations are not copied, but their current values are.
Public methodCoerceValueCoerces 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.)
Public methodEqualsDetermines whether a provided DependencyObject is equivalent to the current DependencyObject. (Inherited from DependencyObject.)
Public methodFillContains(Geometry)Indicates whether the current geometry completely contains the specified Geometry. (Inherited from Geometry.)
Public methodFillContains(Point)Indicates whether the geometry contains the specified Point. (Inherited from Geometry.)
Public methodFillContains(Geometry, Double, ToleranceType)Indicates whether the current geometry contains the specified Geometry, given the specified margin of error. (Inherited from Geometry.)
Public methodFillContains(Point, Double, ToleranceType)Indicates whether the geometry contains the specified Point, given the specified margin of error. (Inherited from Geometry.)
Public methodFillContainsWithDetail(Geometry)Returns a value that describes the intersection between the current geometry and the specified geometry. (Inherited from Geometry.)
Public methodFillContainsWithDetail(Geometry, Double, ToleranceType)Returns a value that describes the intersection between the current geometry and the specified geometry, given the specified margin of error. (Inherited from Geometry.)
Public methodFreezeMakes the current object unmodifiable and sets its IsFrozen property to true. (Inherited from Freezable.)
Public methodGetAnimationBaseValueReturns the non-animated value of the specified DependencyProperty. (Inherited from Animatable.)
Public methodGetAreaGets the area of the filled region of the Geometry object. (Inherited from Geometry.)
Public methodGetArea(Double, ToleranceType)Gets the area of the filled region of this LineGeometry object. (Overrides Geometry.GetArea(Double, ToleranceType).)
Public methodGetAsFrozenCreates 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.)
Public methodGetCurrentValueAsFrozenCreates 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.)
Public methodGetFlattenedPathGeometryGets a PathGeometry that is a polygonal approximation of the Geometry object. (Inherited from Geometry.)
Public methodGetFlattenedPathGeometry(Double, ToleranceType)Gets a PathGeometry, within the specified tolerance, that is a polygonal approximation of the Geometry object. (Inherited from Geometry.)
Public methodGetHashCodeGets a hash code for this DependencyObject. (Inherited from DependencyObject.)
Public methodGetLocalValueEnumeratorCreates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject. (Inherited from DependencyObject.)
Public methodGetOutlinedPathGeometryGets a PathGeometry that is a simplified outline of the filled region of the Geometry. (Inherited from Geometry.)
Public methodGetOutlinedPathGeometry(Double, ToleranceType)Gets a PathGeometry, within the specified tolerance, that is a simplified outline of the filled region of the Geometry. (Inherited from Geometry.)
Public methodGetRenderBounds(Pen)Returns an axis-aligned rectangle that is exactly large enough to contain the geometry after it has been outlined with the specified Pen. (Inherited from Geometry.)
Public methodGetRenderBounds(Pen, Double, ToleranceType)Returns an axis-aligned rectangle that is exactly large enough to contain the geometry after it has been outlined with the specified Pen, given the specified tolerance factor. (Inherited from Geometry.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodGetValueReturns the current effective value of a dependency property on this instance of a DependencyObject. (Inherited from DependencyObject.)
Public methodGetWidenedPathGeometry(Pen)Gets a PathGeometry that is the shape defined by the stroke on the Geometry produced by the specified Pen. (Inherited from Geometry.)
Public methodGetWidenedPathGeometry(Pen, Double, ToleranceType)Gets a PathGeometry that is the shape defined by the stroke on the Geometry produced by the specified Pen, given the specified tolerance factor. (Inherited from Geometry.)
Public methodInvalidatePropertyRe-evaluates the effective value for the specified dependency property (Inherited from DependencyObject.)
Public methodIsEmptyDetermines whether this LineGeometry object is empty. (Overrides Geometry.IsEmpty.)
Public methodMayHaveCurvesDetermines whether this LineGeometry object can have curved segments. (Overrides Geometry.MayHaveCurves.)
Public methodReadLocalValueReturns the local value of a dependency property, if it exists. (Inherited from DependencyObject.)
Public methodSetCurrentValueSets the value of a dependency property without changing its value source. (Inherited from DependencyObject.)
Public methodSetValue(DependencyProperty, Object)Sets the local value of a dependency property, specified by its dependency property identifier. (Inherited from DependencyObject.)
Public methodSetValue(DependencyPropertyKey, Object)Sets the local value of a read-only dependency property, specified by the DependencyPropertyKey identifier of the dependency property. (Inherited from DependencyObject.)
Protected methodShouldSerializePropertyReturns a value that indicates whether serialization processes should serialize the value for the provided dependency property. (Inherited from DependencyObject.)
Public methodShouldSerializeTransformGets a value that indicates whether the value of the Transform property should be serialized. (Inherited from Geometry.)
Public methodStrokeContains(Pen, Point)Determines whether the specified Point is contained in the stroke produced by applying the specified Pen to the geometry. (Inherited from Geometry.)
Public methodStrokeContains(Pen, Point, Double, ToleranceType)Determines whether the specified Point is contained in the stroke produced by applying the specified Pen to the geometry, given the specified margin of error. (Inherited from Geometry.)
Public methodStrokeContainsWithDetail(Pen, Geometry)Returns a value that describes the intersection between the specified Geometry and the stroke created by applying the specified Pen to the current geometry. (Inherited from Geometry.)
Public methodStrokeContainsWithDetail(Pen, Geometry, Double, ToleranceType)Gets a value that describes the intersection between the specified Geometry and the stroke created by applying the specified Pen to the current geometry, given the specified margin of error. (Inherited from Geometry.)
Public methodToStringCreates a string representation of the object based on the current culture. (Inherited from Geometry.)
Public methodToString(IFormatProvider)Creates a string representation of the object using the specified culture-specific formatting information. (Inherited from Geometry.)
Public methodVerifyAccessEnforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.)
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  NameDescription
Public eventChangedOccurs when the Freezable or an object it contains is modified. (Inherited from Freezable.)
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  NameDescription
Public fieldStatic memberEndPointPropertyIdentifies the EndPoint dependency property.
Public fieldStatic memberStartPointPropertyIdentifies the StartPoint dependency property.
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  NameDescription
Explicit interface implemetationPrivate methodIFormattable.ToStringFormats the value of the current instance using the specified format. (Inherited from Geometry.)
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To create multiple connected lines, use a LineSegment or Polyline segment with the PathFigure and PathGeometry classes.

Freezable Features: Because it inherits from the Freezable class, the LineGeometry class provides several special features: LineGeometry objects can be declared as resources, shared among multiple objects, made read-only to improve performance, cloned, and made thread-safe. For more information about the different features provided by Freezable objects, see Freezable Objects Overview.

This example shows how to use the LineGeometry class to describe a line. A LineGeometry is defined by its start and end points.

The following example shows how to create and render a LineGeometry. A Path element is used to render the line. Since a line has no area, the Path object's Fill is not specified; instead the Stroke and StrokeThickness properties are used.

<Path Stroke="Black" StrokeThickness="1" >
  <Path.Data>
    <LineGeometry StartPoint="10,20" EndPoint="100,130" />
  </Path.Data>
</Path>
			Dim myLineGeometry As New LineGeometry()
			myLineGeometry.StartPoint = New Point(10,20)
			myLineGeometry.EndPoint = New Point(100,130)

			Dim myPath As New Path()
			myPath.Stroke = Brushes.Black
			myPath.StrokeThickness = 1
			myPath.Data = myLineGeometry
A LineGeometry drawn from (10,20) to (100,130)

A LineGeometry

Other simple geometry classes include LineGeometry and EllipseGeometry. These geometries, as well as more complex ones, can also be created using a PathGeometry or StreamGeometry. For more information, see the Geometry Overview.

More Code

How to: Create a Composite Shape This example shows how to create composite shapes using Geometry objects and display them using a Path element. In the following example, a LineGeometry, EllipseGeometry, and a RectangleGeometry are used with a GeometryGroup to create a composite shape. The geometries are then drawn using a Path element.
How to: Create a Shape by Using a PathGeometryThis example shows how to create a shape using the PathGeometry class. PathGeometry objects are composed of one or more PathFigure objects; each PathFigure represents a different "figure" or shape. Each PathFigure is itself composed of one or more PathSegment objects, each representing a connected portion of the figure or shape. Segment types include LineSegment, ArcSegment, and BezierSegment.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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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