The Geometry property is set to a MeshGeometr圓D element that describes the visual object in terms of coordinate points and triangles.

The GeometryModel3D element has three crucial properties: Geometry, Material, and BackMaterial. A 3D scene requires one or more objects of type GeometryModel3D, one or more light sources, and a camera that governs how the 3D object is projected onto a 2D surface, and thus how the viewer sees the scene. As you get deeper into 3D programming, you'll start seeing everything in your life in terms of triangles.Īs Hello3D.xaml shows, 3D views are composed within a Viewport3D element. Triangles are intrinsic to 3D programming because each individual triangle always defines a flat surface, yet collections of triangles can mimic a solid object and even approximate a curved surface. Every 3D object is a collection of triangles in three-dimensional coordinate space.

In 3D graphics programming, there are no lines, no Bezier spline curves, no rectangles or ellipses. NET Framework 3.0 runtime installed under Windows XP, you can simply use Internet Explorer® to launch the XAML code that produces it to see the image yourself (see Figure 2). If you're running Windows Vista™ or have the Microsoft®. Where 3D and 2D overlap is in the area of brushes: you always cover the surface of a 3D visual with a 2D brush.įigure 1 shows Hello3D, a 3D version of the traditional 'Hello, World' program. 3D graphics programming involves significantly different concepts and conventions. As with the Windows Presentation Foundation 2D graphics, 3D graphics are often most conveniently accessed in Extensible Application Markup Language (XAML), but there the similarities pretty much end. These are the classes that are intended to bring three-dimensional graphics to mainstream Windows® applications. Code download available at: Foundations 2007_04.exe(165 KB)Īmong the classes that contribute to the Microsoft Windows Presentation Foundation, those in the 3D namespace stand out.

Mesh unfolder sample