/// <summary>
/// Initializes a new instance of the <see cref="IntegerArray"/> struct.
/// </summary>
/// <param name="source">The array range to wrap.</param>
/// <param name="byteOffset">The zero-based index of the first <see cref="Byte"/> in <paramref name="source"/>.</param>
/// <param name="itemsCount">The number of <see cref="UInt32"/> items in <paramref name="source"/>.</param>
/// <param name="encoding">Byte encoding.</param>
public IntegerArray(BYTES source, int byteOffset, int itemsCount, ENCODING encoding)
{
_Data = source.Slice(byteOffset);
_ByteStride = encoding.ByteLength();
this._Setter = null;
this._Getter = null;
if (itemsCount < this.Count)
{
_Data = _Data.Slice(0, itemsCount * _ByteStride);
}
switch (encoding)
{
case ENCODING.UNSIGNED_BYTE:
{
this._Setter = this._SetValueU8;
this._Getter = this._GetValueU8;
break;
}
case ENCODING.UNSIGNED_SHORT:
{
this._Setter = this._SetValueU16;
this._Getter = this._GetValueU16;
break;
}
case ENCODING.UNSIGNED_INT:
{
this._Setter = this._SetValue <UInt32>;
this._Getter = this._GetValue <UInt32>;
break;
}
default: throw new ArgumentException(nameof(encoding));
}
}
public FloatingAccessor(BYTES source, int byteOffset, int itemsCount, int byteStride, int dimensions, ENCODING encoding, Boolean normalized)
{
var enclen = encoding.ByteLength();
this._Data = source.Slice(byteOffset);
this._Getter = null;
this._Setter = null;
this._ByteStride = Math.Max(byteStride, enclen * dimensions);
this._EncodedLen = enclen;
this._ItemCount = this._Data.Count / this._ByteStride;
// strided buffers usually have room for an extra item
if ((_Data.Count % _ByteStride) >= enclen * dimensions)
{
++_ItemCount;
}
_ItemCount = Math.Min(itemsCount, _ItemCount);
if (encoding == ENCODING.FLOAT)
{
this._Setter = this._SetValue <Single>;
this._Getter = this._GetValue <Single>;
return;
}
if (normalized)
{
switch (encoding)
{
case ENCODING.BYTE:
{
this._Setter = this._SetNormalizedS8;
this._Getter = this._GetNormalizedS8;
break;
}
case ENCODING.UNSIGNED_BYTE:
{
this._Setter = this._SetNormalizedU8;
this._Getter = this._GetNormalizedU8;
break;
}
case ENCODING.SHORT:
{
this._Setter = this._SetNormalizedS16;
this._Getter = this._GetNormalizedS16;
break;
}
case ENCODING.UNSIGNED_SHORT:
{
this._Setter = this._SetNormalizedU16;
this._Getter = this._GetNormalizedU16;
break;
}
default: throw new ArgumentException(nameof(encoding));
}
}
else
{
switch (encoding)
{
case ENCODING.BYTE:
{
this._Setter = this._SetValueS8;
this._Getter = this._GetValueS8;
break;
}
case ENCODING.UNSIGNED_BYTE:
{
this._Setter = this._SetValueU8;
this._Getter = this._GetValueU8;
break;
}
case ENCODING.SHORT:
{
this._Setter = this._SetValueS16;
this._Getter = this._GetValueS16;
break;
}
case ENCODING.UNSIGNED_SHORT:
{
this._Setter = this._SetValueU16;
this._Getter = this._GetValueU16;
break;
}
case ENCODING.UNSIGNED_INT:
{
this._Setter = this._SetValueU32;
this._Getter = this._GetValueU32;
break;
}
case ENCODING.FLOAT:
break;
default: throw new ArgumentException(nameof(encoding));
}
}
}
