Math

The XNA Framework provides classes and methods for manipulating vectors and matrices. This section discusses math and includes examples of common math-related game tasks.

In This Section

• Math Overview
  Overview of the math related functionality provided by the XNA Framework.

• Collision Detection Overview
  Overview of the collision-detection–related functionality provided by the XNA Framework.

• How to: Transform a Point with a Matrix
  This example demonstrates how to use the Vector3 and Matrix classes to transform a point.

• How to: Rotate and Move a Camera
  This example demonstrates how to rotate and move the camera by creating a view matrix with CreateLookAt.

• How to: Make a Third-Person Camera
  This example demonstrates how to create a third-person camera.

• How to: Script the Camera to Follow a Curve
  This example demonstrates how to use the Curve and CurveKey classes to script the movement of the camera.

• How to: Position the Camera to View All Objects in a Scene
  This example demonstrates how to position the camera so that all objects in a scene are within the view frustum while maintaining the camera's original orientation.

• How to: Detect Whether Two Models Collide
  This example demonstrates how to use the BoundingSphere class to check whether two models are colliding.

• How to: Detect Whether a User Clicked a 3D Object
  This example demonstrates how to check whether the mouse is positioned over a 3D object by creating a ray starting at the camera's near clipping plane and ending at its far clipping plane.

  Note

  This example applies only to Windows development. The Mouse and MouseState objects are not supported on Xbox 360.