| public static IfFalse ( string paramName, bool condition, string message ) : void | ||
| paramName | string | |
| condition | bool | |
| message | string | |
| Результат | void | |
/// <summary>
/// Initializes a new instance of the <see cref="PerceptualHash"/> class.
/// </summary>
/// <param name="perceptualHash">The</param>
public PerceptualHash(string perceptualHash)
: this()
{
Throw.IfNullOrEmpty(nameof(perceptualHash), perceptualHash);
Throw.IfFalse(nameof(perceptualHash), perceptualHash.Length == 210, "Invalid hash size.");
_Channels[PixelChannel.Red] = new ChannelPerceptualHash(PixelChannel.Red, perceptualHash.Substring(0, 70));
_Channels[PixelChannel.Green] = new ChannelPerceptualHash(PixelChannel.Green, perceptualHash.Substring(70, 70));
_Channels[PixelChannel.Blue] = new ChannelPerceptualHash(PixelChannel.Blue, perceptualHash.Substring(140, 70));
}
/// <summary>
/// Initializes a new instance of the <see cref="DoubleMatrix"/> class.
/// </summary>
/// <param name="order">The order.</param>
/// <param name="values">The values to initialize the matrix with.</param>
protected DoubleMatrix(int order, double[] values)
{
Order = order;
_Values = new double[Order * Order];
if (values != null)
{
Throw.IfFalse(nameof(values), (Order * Order) == values.Length, "Invalid number of values specified");
Array.Copy(values, _Values, _Values.Length);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="DoubleMatrix"/> class.
/// </summary>
/// <param name="order">The order.</param>
/// <param name="values">The values to initialize the matrix with.</param>
protected DoubleMatrix(int order, double[] values)
{
Throw.IfTrue(nameof(order), order < 1, "Invalid order specified, value has to be at least 1.");
Order = order;
_values = new double[Order * Order];
if (values != null)
{
Throw.IfFalse(nameof(values), (Order * Order) == values.Length, "Invalid number of values specified");
Array.Copy(values, _values, _values.Length);
}
}
private void CheckValues <T>(int x, int y, int width, int height, T[] values)
{
CheckIndex(x, y);
Throw.IfNullOrEmpty(nameof(values), values);
Throw.IfFalse(nameof(values), values.Length % Channels == 0, "Values should have {0} channels.", Channels);
int length = values.Length;
int max = width * height * Channels;
Throw.IfTrue(nameof(values), length > max, "Too many values specified.");
length = (x * y * Channels) + length;
max = Image.Width * Image.Height * Channels;
Throw.IfTrue(nameof(values), length > max, "Too many values specified.");
}
public static Bytes Create(Stream stream, bool allowEmptyStream = false)
{
if (allowEmptyStream)
{
Throw.IfNull(nameof(stream), stream);
}
else
{
Throw.IfNullOrEmpty(nameof(stream), stream);
}
Throw.IfFalse(nameof(stream), stream.Position == 0, "The position of the stream should be at zero.");
var data = GetData(stream, out var length);
return(new Bytes(data, length));
}
private void Initialize(string value)
{
Throw.IfNullOrEmpty(nameof(value), value);
string[] values = value.Split(' ');
Throw.IfTrue(nameof(value), values.Length > 2, "Invalid density specified.");
if (values.Length == 2)
{
if (values[1].Equals("cm", StringComparison.OrdinalIgnoreCase))
{
Units = DensityUnit.PixelsPerCentimeter;
}
else if (values[1].Equals("inch", StringComparison.OrdinalIgnoreCase))
{
Units = DensityUnit.PixelsPerInch;
}
else
{
throw new ArgumentException("Invalid density specified.", nameof(value));
}
}
string[] xyValues = values[0].Split('x');
Throw.IfTrue(nameof(value), xyValues.Length > 2, "Invalid density specified.");
double x;
Throw.IfFalse(nameof(value), double.TryParse(xyValues[0], NumberStyles.Number, CultureInfo.InvariantCulture, out x), "Invalid density specified.");
double y;
if (xyValues.Length == 1)
{
y = x;
}
else
{
Throw.IfFalse(nameof(value), double.TryParse(xyValues[1], NumberStyles.Number, CultureInfo.InvariantCulture, out y), "Invalid density specified.");
}
X = x;
Y = y;
}
private void Initialize(string value)
{
string[] values = value.Split('x');
Throw.IfTrue(nameof(value), values.Length > 2, "Invalid point specified.");
Throw.IfFalse(nameof(value), double.TryParse(values[0], NumberStyles.Number, CultureInfo.InvariantCulture, out double x), "Invalid point specified.");
double y;
if (values.Length == 2)
{
Throw.IfFalse(nameof(value), double.TryParse(values[1], NumberStyles.Number, CultureInfo.InvariantCulture, out y), "Invalid point specified.");
}
else
{
y = x;
}
_x = x;
_y = y;
}
/// <summary>
/// Initializes a new instance of the <see cref="MagickColor"/> class.
/// </summary>
/// <param name="color">The RGBA/CMYK hex string or name of the color (http://www.imagemagick.org/script/color.php).
/// For example: #F000, #FF000000</param>
#elif Q16 || Q16HDRI
/// <summary>
/// Initializes a new instance of the <see cref="MagickColor"/> class.
/// </summary>
/// <param name="color">The RGBA/CMYK hex string or name of the color (http://www.imagemagick.org/script/color.php).
/// For example: #F000, #FF000000, #FFFF000000000000</param>
#else
#error Not implemented!
#endif
public MagickColor(string color)
{
Throw.IfNullOrEmpty(nameof(color), color);
if (color.Equals("transparent", StringComparison.OrdinalIgnoreCase))
{
Initialize(Quantum.Max, Quantum.Max, Quantum.Max, 0);
return;
}
if (color[0] == '#')
{
ParseHexColor(color);
return;
}
using (NativeMagickColor instance = new NativeMagickColor())
{
Throw.IfFalse(nameof(color), instance.Initialize(color), "Invalid color specified");
Initialize(instance);
}
}
private void CheckValues <T>(T[] values)
{
Throw.IfNullOrEmpty("values", values);
Throw.IfFalse("values", values.Length % Channels == 0, "Values should have {0} channels.", Channels);
}
private static void CheckLength(long length)
{
Throw.IfFalse(nameof(length), IsSupportedLength(length), $"Streams with a length larger than {int.MaxValue} are not supported, read from file instead.");
}
internal static void CheckStream(Stream stream)
{
Throw.IfFalse(nameof(stream), stream.CanRead, "The stream should be readable.");
Throw.IfFalse(nameof(stream), stream.CanWrite, "The stream should be writeable.");
Throw.IfFalse(nameof(stream), stream.CanSeek, "The stream should be seekable.");
}
private static void CheckLength(long length)
{
Throw.IfFalse(nameof(length), IsSupportedLength(length), "Streams with a length larger than 2147483591 are not supported, read from file instead.");
}
private void CheckIndex(int x, int y)
{
Throw.IfFalse("x", x >= 0 && x < _Image.Width, "Invalid X coordinate: {0}.", x);
Throw.IfFalse("y", y >= 0 && y < _Image.Height, "Invalid Y coordinate: {0}.", y);
}
private void CheckValue(object value)
{
if (value == null)
{
return;
}
Type type = value.GetType();
if (DataType == ExifDataType.Ascii)
{
Throw.IfFalse(nameof(value), type == typeof(string), "Value should be a string.");
return;
}
if (type.IsArray)
{
Throw.IfTrue(nameof(value), !IsArray, "Value should not be an array.");
type = type.GetElementType();
}
else
{
Throw.IfTrue(nameof(value), IsArray, "Value should be an array.");
}
switch (DataType)
{
case ExifDataType.Byte:
Throw.IfFalse(nameof(value), type == typeof(byte), "Value should be a byte{0}", IsArray ? " array." : ".");
break;
case ExifDataType.DoubleFloat:
Throw.IfFalse(nameof(value), type == typeof(double), "Value should be a double{0}", IsArray ? " array." : ".");
break;
case ExifDataType.Long:
Throw.IfFalse(nameof(value), type == typeof(uint), "Value should be an unsigned int{0}", IsArray ? " array." : ".");
break;
case ExifDataType.Rational:
Throw.IfFalse(nameof(value), type == typeof(Rational), "Value should be a rational{0}", IsArray ? " array." : ".");
break;
case ExifDataType.Short:
Throw.IfFalse(nameof(value), type == typeof(ushort), "Value should be an unsigned short{0}", IsArray ? " array." : ".");
break;
case ExifDataType.SignedByte:
Throw.IfFalse(nameof(value), type == typeof(sbyte), "Value should be a signed byte{0}", IsArray ? " array." : ".");
break;
case ExifDataType.SignedLong:
Throw.IfFalse(nameof(value), type == typeof(int), "Value should be an int{0}", IsArray ? " array." : ".");
break;
case ExifDataType.SignedRational:
Throw.IfFalse(nameof(value), type == typeof(SignedRational), "Value should be a signed rational{0}", IsArray ? " array." : ".");
break;
case ExifDataType.SignedShort:
Throw.IfFalse(nameof(value), type == typeof(short), "Value should be a short{0}", IsArray ? " array." : ".");
break;
case ExifDataType.SingleFloat:
Throw.IfFalse(nameof(value), type == typeof(float), "Value should be a float{0}", IsArray ? " array." : ".");
break;
case ExifDataType.Undefined:
Throw.IfFalse(nameof(value), type == typeof(byte), "Value should be a byte array.");
break;
default:
throw new NotSupportedException();
}
}
public static StreamWrapper CreateForWriting(Stream stream)
{
Throw.IfFalse(nameof(stream), stream.CanWrite, "The stream should be writable.");
return(new StreamWrapper(stream));
}
public static StreamWrapper CreateForReading(Stream stream)
{
Throw.IfFalse(nameof(stream), stream.CanRead, "The stream should be readable.");
return(new StreamWrapper(stream));
}
private void CheckIndex(int y)
{
Throw.IfFalse("y", y >= 0 && y < Height, "Invalid Y coordinate: {0}.", y);
}
