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D3D Matrices

Windows Mobile 6.5
4/8/2010

This code sample is named tut03_matrices. It is the third in a series of tutorials on using Direct3D Mobile. It demonstrates how to render 3D geometry.

To run the code sample
  1. Navigate to the solution file (*.sln), and double-click it. By default, the solution file is copied to the following folder:

    C:\Program Files\Windows Mobile 6.5.3 DTK\Samples\PocketPC\CPP\win32\directx\d3dm\tutorials\tut03_matrices

    Microsoft Visual Studio launches and loads the solution.

  2. Build the solution (Ctrl+Shift+B).

  3. Deploy the solution (F5).

The tut03_matrices code sample is an extension of tut02_vertices.

It is assumed that you already know how to create a device and render 2D vertices. This tutorial goes the next step and renders 3D geometry.

To deal with 3D geometry, you use 4x4 matrices to transform the geometry with translations, rotations, scaling, and setting up the camera. Geometry is defined in "model space." You can move it (translation), rotate it (rotation), or stretch it (scaling) using a world transform. The geometry is then said to be in "world space."

Next, you need to position the camera, or "eye point," somewhere to look at the geometry. Another transform, via the view matrix, is used to position and rotate the view. With the geometry in view space, your last transform is the projection transform, which "projects" the 3D scene into the 2D viewport.

Pocket PC SDK: Windows Mobile Professional SDK 

Development Environment: Visual Studio 2005 or 2008.

ActiveSync: Version 4.5.

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