public void TestLookAtFromWorldCenter() {
Camera testCamera = new Camera(Matrix.Identity, Matrix.Identity);
testCamera.LookAt(Vector3.UnitX); // Look to the right
Vector3 leftPoint = -Vector3.UnitX;
Vector3 transformed = Vector3.Transform(leftPoint, testCamera.View);
// The point should be behind the camera
Assert.Greater(transformed.Z, 0.0f);
}
public void TestLookAtFromArbitraryPosition() {
Camera testCamera = new Camera(Matrix.Identity, Matrix.Identity);
testCamera.MoveTo(new Vector3(100.0f, 200.0f, 300.0f));
testCamera.LookAt(Vector3.Zero); // Look to the right
Vector3 leftPoint = new Vector3(99.0f, 200.0f, 300.0f);
Vector3 behindPoint = new Vector3(100.0f, 200.0f, 299.0f);
Vector3 transformedLeft = Vector3.Transform(leftPoint, testCamera.View);
Vector3 transformedBehind = Vector3.Transform(behindPoint, testCamera.View);
// The left point should be in front of the camera
Assert.Less(transformedLeft.Z, 0.0f);
// The behind point should be right of the camera
Assert.Greater(transformedBehind.X, 0.0f);
}
public void TestPositionRetrieval() {
Camera testCamera = new Camera(
Matrix.CreateLookAt(
new Vector3(1.2f, 3.4f, 5.6f),
Vector3.One,
Vector3.Up
),
Matrix.Identity
);
GeoAssertHelper.AreAlmostEqual(
new Vector3(1.2f, 3.4f, 5.6f), testCamera.Position, 10
);
}
public void TestPositionChanging() {
Camera testCamera = new Camera(Matrix.Identity, Matrix.Identity);
testCamera.Position = new Vector3(6.5f, 4.3f, 2.1f);
GeoAssertHelper.AreAlmostEqual(
new Vector3(6.5f, 4.3f, 2.1f), testCamera.Position, 10
);
}
/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
terrainBatch = new PrimitiveBatch<VertexPositionColor>(graphics.GraphicsDevice);
//terrainDrawContext.BasicEffect.FogEnabled = true;
//terrainDrawContext.BasicEffect.FogColor = new Color(20, 20, 20).ToVector3();
//terrainDrawContext.BasicEffect.FogStart = 50;
//terrainDrawContext.BasicEffect.FogEnd = 200;
contentManager = new ContentManager(
GraphicsDeviceServiceHelper.MakePrivateServiceProvider(graphics),
Content.RootDirectory
);
debugDrawer = new DebugDrawer(graphics);
// Displays a FPS counter
Components.Add(new FpsComponent(graphics, Content.RootDirectory));
// Create a new screen. Screens manage the state of a GUI and accept input
// notifications. If you have an in-game computer display where you want
// to use a GUI, you can create a second screen for that and thus cleanly
// separate the state of the in-game computer from your game's own GUI :)
Viewport viewport = GraphicsDevice.Viewport;
Screen mainScreen = new Screen(viewport.Width, viewport.Height);
gui.Screen = mainScreen;
// Each screen has a 'desktop' control. This invisible control by default
// stretches across the whole screen and serves as the root of the control
// tree in which all visible controls are managed. All controls are positioned
// using a system of fractional coordinates and pixel offset coordinates.
// We now adjust the position of the desktop window to prevent GUI or HUD
// elements from appearing outside of the title-safe area.
mainScreen.Desktop.Bounds = new UniRectangle(
new UniScalar(0.0f, 0.0f), new UniScalar(0.0f, 0.0f), // x and y = 10%
new UniScalar(1.0f, 0.0f), new UniScalar(1.0f, 0.0f) // width and height = 80%
);
// Now let's do something funky: add buttons directly to the desktop.
// This will also show the effect of the title-safe area.
createDesktopControls(mainScreen);
// Create a new camera with a perspective projection matrix
camera = new Camera(
Matrix.CreateLookAt(
new Vector3(0.0f, 0.0f, -100.0f), // camera location
new Vector3(0.0f, 0.0f, 0.0f), // camera focal point
Vector3.Up // up vector for the camera's orientation
),
Matrix.CreatePerspectiveFieldOfView(
MathHelper.PiOver4, // field of view
(float)Window.ClientBounds.Width / (float)Window.ClientBounds.Height, // aspect ratio
0.01f, 1000.0f // near and far clipping plane
)
);
base.Initialize();
//Initialized = true;
}
