public void SetProjectionFieldOfViewTest()
{
PerspectiveProjection projection = new PerspectiveProjection();
projection.SetFieldOfView(MathHelper.ToRadians(60), 16.0f / 9.0f, 1, 10);
PerspectiveProjection projection2 = new PerspectiveProjection();
projection2.SetFieldOfView(MathHelper.ToRadians(60), 16.0f / 9.0f);
projection2.Near = 1;
projection2.Far = 10;
Projection projection3 = new PerspectiveProjection
{
Left = -2.0528009f / 2.0f,
Right = 2.0528009f / 2.0f,
Bottom = -1.1547005f / 2.0f,
Top = 1.1547005f / 2.0f,
Near = 1,
Far = 10,
};
Matrix expected = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(60), 16.0f / 9.0f, 1, 10);
Assert.IsTrue(Matrix.AreNumericallyEqual(expected, projection));
Assert.IsTrue(Matrix.AreNumericallyEqual(expected, projection2));
Assert.IsTrue(Matrix.AreNumericallyEqual(expected, projection3.ToMatrix()));
}
public void SetProjectionTest()
{
PerspectiveProjection projection = new PerspectiveProjection();
projection.Set(4, 3, 2, 10);
PerspectiveProjection projection2 = new PerspectiveProjection();
projection2.Set(4, 3);
projection2.Near = 2;
projection2.Far = 10;
Projection projection3 = new PerspectiveProjection
{
Left = -2,
Right = 2,
Bottom = -1.5f,
Top = 1.5f,
Near = 2,
Far = 10,
};
Matrix expected = Matrix.CreatePerspective(4, 3, 2, 10);
Assert.IsTrue(Matrix.AreNumericallyEqual(expected, projection));
Assert.IsTrue(Matrix.AreNumericallyEqual(expected, projection2));
Assert.IsTrue(Matrix.AreNumericallyEqual(expected, projection3.ToMatrix()));
}
public void SetProjectionOffCenterTest()
{
PerspectiveProjection projection = new PerspectiveProjection();
projection.SetOffCenter(0, 4, 1, 4, 2, 10);
PerspectiveProjection projection2 = new PerspectiveProjection();
projection2.SetOffCenter(0, 4, 1, 4);
projection2.Near = 2;
projection2.Far = 10;
Matrix expected = Matrix.CreatePerspectiveOffCenter(0, 4, 1, 4, 2, 10);
Assert.IsTrue(Matrix.AreNumericallyEqual(expected, projection));
Assert.IsTrue(Matrix.AreNumericallyEqual(expected, projection2.ToMatrix()));
}
private void TestClippedProjection()
{
RandomHelper.Random = new Random(1234567);
var p = new PerspectiveProjection();
p.SetOffCenter(-0.1f, 0.2f, -0.1f, 0.1f, 0.1f, 1);
_debugRenderer.DrawViewVolume(p.ViewVolume, new Pose(new Vector3(0, 2, 0)), Color.Red, true, false);
p.NearClipPlane = new Plane(new Vector3(-0.1f, +0.1f, 1).Normalized, -0.4f);
PlaneShape.MeshSize = 2;
_debugRenderer.DrawShape(new PlaneShape(p.NearClipPlane.Value), new Pose(new Vector3(0, 2, 0)), Vector3.One, Color.Green, false, false);
Matrix m = p.ToMatrix();
for (int i = 0; i < 100000; i++)
{
Aabb aabb = p.ViewVolume.GetAabb(Pose.Identity);
aabb.Minimum -= new Vector3(1);
aabb.Maximum += new Vector3(1);
float x = RandomHelper.Random.NextFloat(aabb.Minimum.X, aabb.Maximum.X);
float y = RandomHelper.Random.NextFloat(aabb.Minimum.Y, aabb.Maximum.Y);
float z = RandomHelper.Random.NextFloat(aabb.Minimum.Z, aabb.Maximum.Z);
//if (RandomHelper.Random.NextBool())
// x = 0;
//else
// y = 0;
Vector4 c = m * new Vector4(x, y, z, 1);
c /= c.W;
Color color = Color.Orange;
if (c.X < -1 || c.X > 1 || c.Y < -1 || c.Y > 1 || c.Z < 0 || c.Z > 1)
{
continue;// color = Color.Gray;
}
_debugRenderer.DrawPoint(new Vector3(x, y + 2, z), color, false);
}
}