public void GetScreenSizeWithOrthographic()
{
// Camera
var projection = new OrthographicProjection();
projection.SetOffCenter(0, 4, 0, 2);
var camera = new Camera(projection);
var cameraNode = new CameraNode(camera);
cameraNode.PoseWorld = new Pose(new Vector3F(123, 456, -789), Matrix33F.CreateRotation(new Vector3F(1, -2, 3), MathHelper.ToRadians(75)));
// 2:1 viewport
var viewport = new Viewport(10, 10, 200, 100);
// Test object
var shape = new SphereShape();
var geometricObject = new GeometricObject(shape);
// Empty sphere at camera position.
shape.Radius = 0;
geometricObject.Pose = cameraNode.PoseWorld;
Vector2F screenSize = GraphicsHelper.GetScreenSize(cameraNode, viewport, geometricObject);
Assert.AreEqual(0, screenSize.X);
Assert.AreEqual(0, screenSize.Y);
// Empty sphere centered at near plane.
shape.Radius = 0;
geometricObject.Pose = cameraNode.PoseWorld * new Pose(new Vector3F(0.123f, -0.543f, -1));
screenSize = GraphicsHelper.GetScreenSize(cameraNode, viewport, geometricObject);
Assert.AreEqual(0, screenSize.X);
Assert.AreEqual(0, screenSize.Y);
// Create sphere which as a bounding sphere of ~1 unit diameter:
// Since the bounding sphere is based on the AABB, we need to make the
// actual sphere a bit smaller.
shape.Radius = 1 / (2 * (float)Math.Sqrt(3)) + Numeric.EpsilonF;
// Sphere at camera position.
geometricObject.Pose = cameraNode.PoseWorld;
screenSize = GraphicsHelper.GetScreenSize(cameraNode, viewport, geometricObject);
Assert.IsTrue(Numeric.AreEqual(screenSize.X, 50.0f, 10f));
Assert.IsTrue(Numeric.AreEqual(screenSize.Y, 50.0f, 10f));
// Sphere at near plane.
geometricObject.Pose = cameraNode.PoseWorld * new Pose(new Vector3F(0.123f, -0.543f, -1));
screenSize = GraphicsHelper.GetScreenSize(cameraNode, viewport, geometricObject);
Assert.IsTrue(Numeric.AreEqual(screenSize.X, 50.0f, 10f));
Assert.IsTrue(Numeric.AreEqual(screenSize.Y, 50.0f, 10f));
// Double distance --> same size
geometricObject.Pose = cameraNode.PoseWorld * new Pose(new Vector3F(0.123f, -0.543f, -2));
screenSize = GraphicsHelper.GetScreenSize(cameraNode, viewport, geometricObject);
Assert.IsTrue(Numeric.AreEqual(screenSize.X, 50.0f, 10f));
Assert.IsTrue(Numeric.AreEqual(screenSize.Y, 50.0f, 10f));
}
public void SetProjectionTest()
{
OrthographicProjection projection = new OrthographicProjection();
projection.Set(4, 3, 2, 10);
OrthographicProjection camera2 = new OrthographicProjection();
camera2.Set(4, 3);
camera2.Near = 2;
camera2.Far = 10;
OrthographicProjection camera3 = new OrthographicProjection
{
Left = -2,
Right = 2,
Bottom = -1.5f,
Top = 1.5f,
Near = 2,
Far = 10,
};
Matrix44F expected = Matrix44F.CreateOrthographic(4, 3, 2, 10);
Assert.IsTrue(Matrix44F.AreNumericallyEqual(expected, projection));
Assert.IsTrue(Matrix44F.AreNumericallyEqual(expected, camera2));
Assert.IsTrue(Matrix44F.AreNumericallyEqual(expected, camera3.ToMatrix44F()));
}
public void SetProjectionTest()
{
Matrix44F projectionMatrix = Matrix44F.CreateOrthographicOffCenter(1, 4, 2, 5, 6, 11);
OrthographicProjection orthographicProjection = new OrthographicProjection();
orthographicProjection.Set(projectionMatrix);
CameraInstance cameraInstance = new CameraInstance(new Camera(orthographicProjection));
Assert.AreEqual(Vector3F.Zero, cameraInstance.PoseWorld.Position);
Assert.AreEqual(Matrix33F.Identity, cameraInstance.PoseWorld.Orientation);
Assert.That(Numeric.AreEqual(3, cameraInstance.Camera.Projection.Width));
Assert.That(Numeric.AreEqual(3, cameraInstance.Camera.Projection.Height));
Assert.That(Numeric.AreEqual(1f, cameraInstance.Camera.Projection.AspectRatio));
Assert.That(Numeric.AreEqual(6, cameraInstance.Camera.Projection.Near));
Assert.That(Numeric.AreEqual(11, cameraInstance.Camera.Projection.Far));
Assert.That(Numeric.AreEqual(1, cameraInstance.Camera.Projection.Left));
Assert.That(Numeric.AreEqual(4, cameraInstance.Camera.Projection.Right));
Assert.That(Numeric.AreEqual(2, cameraInstance.Camera.Projection.Bottom));
Assert.That(Numeric.AreEqual(5, cameraInstance.Camera.Projection.Top));
Assert.That(Numeric.AreEqual(5, cameraInstance.Camera.Projection.Depth));
Assert.That(Matrix44F.AreNumericallyEqual(orthographicProjection, cameraInstance.Camera.Projection));
Assert.That(Matrix44F.AreNumericallyEqual(orthographicProjection.Inverse, cameraInstance.Camera.Projection.Inverse));
Assert.IsNotNull(cameraInstance.BoundingShape);
PerspectiveProjection perspectiveProjection = new PerspectiveProjection();
perspectiveProjection.Inverse = Matrix44F.CreatePerspectiveOffCenter(1, 5, 2, 5, 1, 10).Inverse;
cameraInstance = new CameraInstance(new Camera(perspectiveProjection));
Assert.AreEqual(Vector3F.Zero, cameraInstance.PoseWorld.Position);
Assert.AreEqual(Matrix33F.Identity, cameraInstance.PoseWorld.Orientation);
Assert.That(Numeric.AreEqual(MathHelper.ToRadians(33.690067f), cameraInstance.Camera.Projection.FieldOfViewX));
Assert.That(Numeric.AreEqual(MathHelper.ToRadians(15.255119f), cameraInstance.Camera.Projection.FieldOfViewY));
Assert.That(Numeric.AreEqual(4, cameraInstance.Camera.Projection.Width));
Assert.That(Numeric.AreEqual(3, cameraInstance.Camera.Projection.Height));
Assert.That(Numeric.AreEqual(4.0f / 3.0f, cameraInstance.Camera.Projection.AspectRatio));
Assert.That(Numeric.AreEqual(1, cameraInstance.Camera.Projection.Left));
Assert.That(Numeric.AreEqual(5, cameraInstance.Camera.Projection.Right));
Assert.That(Numeric.AreEqual(2, cameraInstance.Camera.Projection.Bottom));
Assert.That(Numeric.AreEqual(5, cameraInstance.Camera.Projection.Top));
Assert.That(Numeric.AreEqual(1, cameraInstance.Camera.Projection.Near));
Assert.That(Numeric.AreEqual(10, cameraInstance.Camera.Projection.Far));
Assert.That(Numeric.AreEqual(9, cameraInstance.Camera.Projection.Depth));
Assert.IsNotNull(cameraInstance.BoundingShape);
}
public void SetProjectionOffCenterTest()
{
OrthographicProjection projection = new OrthographicProjection();
projection.SetOffCenter(0, 4, 1, 4, 2, 10);
OrthographicProjection camera2 = new OrthographicProjection();
camera2.SetOffCenter(0, 4, 1, 4);
camera2.Near = 2;
camera2.Far = 10;
Projection camera3 = new OrthographicProjection
{
Left = 0,
Right = 4,
Bottom = 1,
Top = 4,
Near = 2,
Far = 10,
};
Matrix44F expected = Matrix44F.CreateOrthographicOffCenter(0, 4, 1, 4, 2, 10);
Assert.IsTrue(Matrix44F.AreNumericallyEqual(expected, projection));
Assert.IsTrue(Matrix44F.AreNumericallyEqual(expected, camera2));
Assert.IsTrue(Matrix44F.AreNumericallyEqual(expected, camera3.ToMatrix44F()));
}
