public Block ConvertToBlock(IImage <T> input, IEnumerable <IFitsValue> extraKeys, bool isXtension = false)
        {
            if (input is null)
            {
                throw new ArgumentNullException(nameof(input), SR.NullArgument);
            }

            AllowedTypes.ValidateDataType <T>();

            var extraKeysInst = (extraKeys ?? Enumerable.Empty <IFitsValue>()).ToList();

            // Throws if mandatory keys are present
            Extensions.CheckExtraFitsKeys(extraKeysInst);

            var bitPix = FitsCs.Extensions.ConvertTypeToBitPix <T>()
                         ?? throw new InvalidOperationException(string.Format(SR.TypeNotSupported, typeof(T)));

            var desc = new Descriptor(
                bitPix,
                new[] { input.Width, input.Height },
                isXtension ? ExtensionType.Image : ExtensionType.Primary);

            var keys = new List <IFitsValue>(extraKeysInst.Count + 10);

            keys.AddRange(desc.GenerateFitsHeader());
            keys.AddRange(extraKeysInst);
            keys.Add(FitsKey.CreateEnd());

            var block = Block <T> .CreateWithData(desc, keys, x =>
            {
                input.GetView().CopyTo(x);
            });

            return(block);
        }
Beispiel #2
0
        public void Test_CommentKeys_Text_Roundtrips()
        {
            var keys = FitsKey.ToComments(LoremIpsum());

            Assert.That(keys.Length, Is.EqualTo(7));
            var roundTrip = FitsKey.ParseCommentString(keys);

            Assert.That(roundTrip.AsSpan().SequenceEqual(roundTrip.AsSpan()));
        }
Beispiel #3
0
        public void Test_Continue_TextComment_Roundtrips()
        {
            var keys = FitsKey.ToContinueKeys(LoremIpsum(), LoremIpsum(), @"LOREM");

            Assert.That(keys.Length, Is.EqualTo(14));
            Assert.That(keys[0] is IFitsValue <string> key && key.Name == @"LOREM");

            var roundTrip = FitsKey.ParseContinuedString(keys, true);

            Assert.That(roundTrip.Text.AsSpan().SequenceEqual(LoremIpsum()));
            Assert.That(roundTrip.Comment.AsSpan().SequenceEqual(LoremIpsum()));
        }
Beispiel #4
0
        public void Test_Continue_Comment_Roundtrips()
        {
            var keys = FitsKey.ToContinueKeys(ReadOnlySpan <char> .Empty, LoremIpsum(), @"LOREM");

            Assert.That(keys.Length, Is.EqualTo(7));
            Assert.That(keys[0] is IFitsValue <string> key && key.Name == @"LOREM");

            var roundTrip = FitsKey.ParseContinuedString(keys, true);

            Assert.That(string.IsNullOrEmpty(roundTrip.Text));
            Assert.That(roundTrip.Comment.AsSpan().SequenceEqual(LoremIpsum()));
        }
Beispiel #5
0
        public void Test_CommentSpaces()
        {
            var bytes = new byte[80];
            var bSpan = bytes.AsSpan();

            bSpan.Fill((byte)' ');

            Encoding.ASCII.GetBytes("TEST    = 1234/Comment").CopyTo(bSpan);

            var key = FitsKey.ParseRawData(bSpan);

            Assert.That(key is IFitsValue <int>);
            Assert.That((int)key.Value, Is.EqualTo(1234));
            Assert.That(key.Comment, Is.EqualTo(@" Comment"));
        }
Beispiel #6
0
        public void Test_ComplexKey()
        {
            var value = new Complex(-100500e-10, 100500e10);

            var key = FitsKey.Create("TEST", value, type: KeyType.Free);
            var str = key.ToString();

            var buff = Encoding.ASCII.GetBytes(str);

            var compKey1 = FitsKey.ParseRawData(buff);

            key  = FitsKey.Create("TEST", value);
            str  = key.ToString();
            buff = Encoding.ASCII.GetBytes(str);

            var compKey2 = FitsKey.ParseRawData(buff);

            Assert.That(compKey1.Equals(compKey2));
        }
        public void TestThroughBlocks <T>(object?__ = null) where T : unmanaged, IComparable <T>, IEquatable <T>
        {
            const int n    = 248;
            const int m    = 496;
            var       data = ArrayPool <T> .Shared.Rent(n *m);

            var converter = ConverterProvider.GetImageConverter <T>();

            try
            {
                for (var i = 0; i < n; i++)
                {
                    for (var j = 0; j < m; j++)
                    {
                        data[m * i + j] = Internal.UnsafeNumerics.MathOps.DangerousCast <double, T>(Math.Sqrt(
                                                                                                        (i - 50) * (i - 50) * (1 + Math.Pow(Math.Sin(Math.PI * (i + 23) * 10 / n), 2))
                                                                                                        + (j / 2.0 - 100) * (j / 2.0 - 100) * (1.1 + Math.Sin(Math.PI * j * 10 / m))));
                    }
                }

                data[247 * 496 + 495] = default;
                var src = Image.Create <T>(data.AsSpan(..(n * m)), n, m);

                var key   = FitsKey.Create("DEBUG", "Debug key", "With a comment");
                var block = converter.ConvertToBlock(src, key);

                var rec = converter.ConvertFromBlock(block, out var keys);

                Assert.AreEqual(src, rec);
                Assert.AreEqual(data[247 * 496 + 495], src[247, 495]);
                Assert.AreEqual(data[247 * 496 + 495], rec[247, 495]);
                Assert.That(keys, Has.One.Items);
                Assert.That(keys, Contains.Item(key));
            }
            finally
            {
                ArrayPool <T> .Shared.Return(data);
            }
        }