#Nodebox display multiple geometeries how to

The base class for all geometries is the abstract class Geometry. The following table lists several classes that have properties that take a Geometry object. The preceding sections mentioned that Geometry objects can be used with other objects for a variety of purposes, such as drawing shapes, animating, and clipping. By setting the Data property of the Path with a Geometry and setting its Fill and Stroke properties, you can render a Geometry. One Shape, the Path class, actually uses a Geometry to describe its contents. While a Shape object is used to render 2D graphics, a Geometry object can be used to define the geometric region for 2D graphics, define a region for clipping, or define a region for hit testing, for example. Because they are elements, Shape objects can render themselves and participate in the layout system, while Geometry objects cannot.Īlthough Shape objects are more readily usable than Geometry objects, Geometry objects are more versatile. The Geometry and Shape classes seem similar in that they both describe 2D shapes (compare EllipseGeometry and Ellipse for example), but there are important differences.įor one, the Geometry class inherits from the Freezable class while the Shape class inherits from FrameworkElement.

For more information about the different features provided by Freezable objects, see the Freezable Objects Overview. More complex geometries can be created by using the PathGeometry and StreamGeometry classes, which enable you to describe arcs and curves.īecause a Geometry is a type of Freezable, Geometry objects provide several special features: they can be declared as resources, shared among multiple objects, made read-only to improve performance, cloned, and made thread-safe. Geometry objects can be simple, such as rectangles and circles, or composite, created from two or more geometry objects. You can even use a geometry to define an animation path.

These geometric descriptions have many uses, such defining a shape to paint to the screen or defining hit-test and clip regions. The Geometry class and the classes which derive from it, such as EllipseGeometry, PathGeometry, and CombinedGeometry, enable you to describe the geometry of a 2D shape. This topic also contrasts the differences between Geometry objects and Shape elements.

#Nodebox display multiple geometeries how to

This overview describes how to use the Windows Presentation Foundation (WPF) Geometry classes to describe shapes.