public void IfCameraNotAdjustedItBehavesIdenticallyToQuadraticScreenSpace()
{
var q = new QuadraticScreenSpace(window);
var c = new Camera2DScreenSpace(window);
Assert.IsTrue(
c.FromPixelSpace(new Vector2D(1, 2)).IsNearlyEqual(q.FromPixelSpace(new Vector2D(1, 2))));
Assert.IsTrue(
c.FromPixelSpace(new Size(-3, 4)).IsNearlyEqual(q.FromPixelSpace(new Size(-3, 4))));
Assert.IsTrue(
c.ToPixelSpace(new Vector2D(2, 6)).IsNearlyEqual(q.ToPixelSpace(new Vector2D(2, 6))));
Assert.IsTrue(c.ToPixelSpace(new Size(-2, 0)).IsNearlyEqual(q.ToPixelSpace(new Size(-2, 0))));
}
public void ToPixelSpace()
{
var quadraticSize = new Size(window.ViewportPixelSize.Width);
var camera = new Camera2DScreenSpace(window)
{
LookAt = new Vector2D(-0.5f, 0.6f),
Zoom = 2.0f
};
Assert.AreEqual(quadraticSize.Width * 1.5f, camera.ToPixelSpace(Vector2D.Zero).X);
Assert.IsTrue(camera.ToPixelSpace(Vector2D.Half).IsNearlyEqual(new Vector2D(800, 26)));
Assert.IsTrue(camera.ToPixelSpace(Vector2D.One).IsNearlyEqual(new Vector2D(1120, 346)));
Assert.AreEqual(quadraticSize, camera.ToPixelSpace(Size.Half));
}
public void ToPixelSpaceWithRotation()
{
var quadraticSize = new Size(window.ViewportPixelSize.Width);
var camera = new Camera2DScreenSpace(window) { Rotation = 90.0f };
Assert.AreEqual(0.0f, camera.ToPixelSpace(Vector2D.Zero).X);
Assert.IsTrue(camera.ToPixelSpace(Vector2D.Half).IsNearlyEqual(new Vector2D(-160.0f, 90.0f)));
Assert.IsTrue(
camera.ToPixelSpace(Vector2D.One).IsNearlyEqual(new Vector2D(-320.0f, (160.0f + 90.0f))));
Assert.AreEqual(quadraticSize, camera.ToPixelSpace(Size.One));
}
public void LoopingToAndFromPixelSpaceLeavesAPointUnchanged()
{
var camera = new Camera2DScreenSpace(window)
{
LookAt = new Vector2D(-0.5f, 0.6f),
Zoom = 3.0f
};
Assert.IsTrue(
camera.ToPixelSpace(camera.FromPixelSpace(new Vector2D(1.2f, 3.4f))).IsNearlyEqual(
new Vector2D(1.2f, 3.4f)));
Assert.IsTrue(
camera.FromPixelSpace(camera.ToPixelSpace(new Vector2D(1.2f, 3.4f))).IsNearlyEqual(
new Vector2D(1.2f, 3.4f)));
}