Geometry Geometry Geometry Class
Provides a base class for objects that define geometric shapes. Geometry objects can be used for clipping regions and as geometry definitions for rendering twodimensional graphical data as a Path.
Syntax
Declaration
public class Geometry
public class Geometry
Public Class Geometry
Inheritance Hierarchy

GeometryGeometryGeometry
Inherited Members
, , , , , , ,Remarks
For properties that take a Geometry, you need to specify a nonabstract derived type of Geometry, as an object element for XAML, or as a defined instance for code. For details, see reference pages for EllipseGeometry, GeometryGroup, LineGeometry, PathGeometry, or RectangleGeometry.
Geometries can be conceptualized as being "simple" or "complex". EllipseGeometry, LineGeometry, and RectangleGeometry are the simple geometries, which specify the geometrical shape as one element with basic coordinate or dimension properties. GeometryGroup and PathGeometry are the complex geometries. GeometryGroup combines other geometries that it holds as child objects. PathGeometry uses either a set of nested figure/segment path definition elements, or a compact string syntax that's usually output by designers, to describe a complex path for the geometry.
A Geometry does not entirely define its own rendering, in that it's not a UIElement itself and needs to be provided as some property value for a UIElement in order to cause a rendering effect. Typically, a Geometry is provided as data for a Path (which is a kind of Shape ).
The Data property takes a Geometry. In practice, you'd typically specify a PathGeometry for this, with its Figures property value expressed in the compact string syntax for a path.
GeometryCollection is a strongly typed collection for Geometry items. The Children property uses a GeometryCollection.
Geometry versus Shape
The Shape class has a Fill, Stroke, and other rendering properties that Geometry and its derived classes lack. The Shape class is a FrameworkElement and therefore participates in the layout system; its derived classes can be used as the content of any element that supports UIElement children. The Geometry class, on the other hand, simply defines the geometry as a graphics primitive, and cannot render itself. You could conceivably use Geometry as a property type for custom UI element properties where the basic graphics primitive expressions enabled by Geometry are useful as a definition.
Geometry for UIElement.Clip
To provide a value for the Clip property in the Windows Runtime, you must specifically use a RectangleGeometry, not any Geometry derived type. If you're porting XAML or code from other XAML frameworks, see if you can change your Clip to use RectangleGeometry. Otherwise, you might need to change the Zorder relationship and use techniques such as an overlay of an ImageBrush with a modified RenderTargetBitmap source that has alpha transparency for the "clipping" parts.
Geometry derived classes
Geometry is the parent class for several derived classes that define different categories of practical geometries:
 EllipseGeometry
 GeometryGroup  can be used to specify multiple geometries as Children
 LineGeometry
 PathGeometry  use this type for any geometry that can't be expressed by the other "simple" geometry types
 RectangleGeometry
Properties summary
Gets a Rect that specifies the axisaligned bounding box of the Geometry. 

Gets an empty geometry object. 

Gets the standard tolerance used for polygonal approximation. 

Identifies the Transform dependency property. 
Properties

BoundsBoundsBoundsBounds
Gets a Rect that specifies the axisaligned bounding box of the Geometry.
public Rect Bounds { get; }
public Rect Bounds { get; }
Public ReadOnly Property Bounds As Rect
Property Value

The axisaligned bounding box of the Geometry.


EmptyEmptyEmptyEmpty
Gets an empty geometry object.
public static Geometry Empty { get; }
public static Geometry Empty { get; }
Public Static ReadOnly Property Empty As Geometry
Property Value

The empty geometry object.


StandardFlatteningToleranceStandardFlatteningToleranceStandardFlatteningToleranceStandardFlatteningTolerance
Gets the standard tolerance used for polygonal approximation.
public static double StandardFlatteningTolerance { get; }
public static double StandardFlatteningTolerance { get; }
Public Static ReadOnly Property StandardFlatteningTolerance As double
Property Value

doubledoubledouble
The standard tolerance. The default value is 0.25.


TransformTransformTransformTransform
Gets or sets the Transform object applied to a Geometry.
public Transform Transform { get; set; }
public Transform Transform { get; set; }
Public ReadWrite Property Transform As Transform
<geometry> <geometry.Transform> singleTransform </geometry.Transform </geometry>
Property Value

TransformPropertyTransformPropertyTransformPropertyTransformProperty
Identifies the Transform dependency property.
public static DependencyProperty TransformProperty { get; }
public static DependencyProperty TransformProperty { get; }
Public Static ReadOnly Property TransformProperty As DependencyProperty
Property Value

The identifier for the Transform dependency property.
