/// <summary/>
public static Camera MakeCamera(Variation v)
{
Camera camera = null;
if (v["Camera"] != null)
{
v.AssertAbsenceOf("CameraType", "CameraPosition", "CameraLookDirection", "CameraUp", "CameraNearPlaneDistance", "CameraFarPlaneDistance", "CameraWidth", "CameraFieldOfView", "CameraViewMatrix", "CameraProjectionMatrix");
camera = CameraFactory.MakeCamera(v["Camera"]);
}
else
{
v.AssertExistenceOf("CameraType");
switch (v["CameraType"])
{
case "Orthographic":
v.AssertExistenceOf("CameraPosition", "CameraLookDirection", "CameraUp", "CameraNearPlaneDistance", "CameraFarPlaneDistance", "CameraWidth");
camera = new OrthographicCamera();
SetProjectionCameraParameters(camera, v);
((OrthographicCamera)camera).Width = StringConverter.ToDouble(v["CameraWidth"]);
break;
case "Perspective":
v.AssertExistenceOf("CameraPosition", "CameraLookDirection", "CameraUp", "CameraNearPlaneDistance", "CameraFarPlaneDistance", "CameraFieldOfView");
camera = new PerspectiveCamera();
SetProjectionCameraParameters(camera, v);
((PerspectiveCamera)camera).FieldOfView = StringConverter.ToDouble(v["CameraFieldOfView"]);
break;
case "Matrix":
v.AssertExistenceOf("CameraViewMatrix", "CameraProjectionMatrix");
camera = new MatrixCamera();
((MatrixCamera)camera).ViewMatrix = StringConverter.ToMatrix3D(v["CameraViewMatrix"]);
((MatrixCamera)camera).ProjectionMatrix = StringConverter.ToMatrix3D(v["CameraProjectionMatrix"]);
break;
case "MatrixOrtho":
v.AssertExistenceOf("CameraPosition", "CameraLookDirection", "CameraUp", "CameraNearPlaneDistance", "CameraFarPlaneDistance", "CameraWidth", "CameraHeight");
camera = new MatrixCamera();
((MatrixCamera)camera).ViewMatrix = MakeViewMatrix(v);
((MatrixCamera)camera).ProjectionMatrix = MakeOrthoMatrix(v);
break;
case "MatrixPersp":
v.AssertExistenceOf("CameraPosition", "CameraLookDirection", "CameraUp", "CameraNearPlaneDistance", "CameraFarPlaneDistance", "CameraFieldOfViewX", "CameraFieldOfViewY");
camera = new MatrixCamera();
((MatrixCamera)camera).ViewMatrix = MakeViewMatrix(v);
((MatrixCamera)camera).ProjectionMatrix = MakePerspMatrix(v);
break;
default:
throw new ApplicationException("Invalid camera type: " + v["CameraType"]);
}
}
return(camera);
}
