/// <summary>
/// Selects a <see cref="DoubleArray"/> to a <see cref="double"/>. The result is stored in a <see cref="Identity"/>.
/// </summary>
/// <param name="input">The indicator that sends data via <see cref="IUpdatable.Updated"/></param>
/// <param name="selector">A selector to choose a <see cref="double"/>. </param>
/// <param name="waitForFirstToReady">Input must be ready in order to push the updates forward.</param>
/// <param name="name">Name of the new returned <see cref="Identity"/>.</param>
public static Identity Select(this IUpdatable input, SelectorFunctionHandler selector, bool waitForFirstToReady = true, string name = null)
{
if (selector == null)
{
throw new ArgumentNullException(nameof(selector));
}
var idn = new Identity(ResolveName(input, name), setReady: true);
if (input.OutputCount > 1)
{
unsafe {
if (waitForFirstToReady)
{
input.Updated += (time, updated) => {
if (input.IsReady)
{
var ret = new DoubleArray2DManaged(updated.Count, 1);
fixed(double *dst = ret, src = updated)
for (int i = 0; i < updated.Count; i++)
{
dst[i] = selector(src[i * updated.Properties]);
}
idn.Update(time, ret);
}
};
}
else
{
input.Updated += (time, updated) => {
var ret = new DoubleArray2DManaged(updated.Count, 1);
fixed(double *dst = ret, src = updated)
for (int i = 0; i < updated.Count; i++)
{
dst[i] = selector(src[i * updated.Properties]);
}
idn.Update(time, ret);
};
}
input.Resetted += sender => idn.Reset();
}
}
else
{
if (waitForFirstToReady)
{
input.Updated += (time, updated) => {
if (input.IsReady)
{
idn.Update(time, new DoubleArrayScalar(selector(updated)));
}
};
}
else
{
input.Updated += (time, updated) => idn.Update(time, new DoubleArrayScalar(selector(updated)));
}
input.Resetted += sender => idn.Reset();
}
return(idn);
}
/// <summary>
/// Performs a math <paramref name="op"/> over <see cref="DoubleArray.Value"/> or value from <paramref name="selector"/>. The result is stored in a <see cref="Identity"/>.
/// </summary>
/// <param name="first">The indicator that sends data via <see cref="IUpdatable.Updated"/> even to the math <paramref name="op"/></param>
/// <param name="op">The operation to perform on <see cref="DoubleArray.Value"/>.</param>
/// <param name="selector">A selector to choose what <see cref="double"/> to pass to math <paramref name="op"/>. By default <see cref="DoubleArray.Value"/> is used.</param>
/// <param name="waitForFirstToReady">First must be ready in order to push the updates forward.</param>
/// <param name="name">Name of the new returned <see cref="Identity"/> representing the <paramref name="op"/>.</param>
public static Identity Function(this IUpdatable first, UnaryFunctionHandler op, SelectorFunctionHandler selector = null, bool waitForFirstToReady = true, string name = null)
{
if (op == null)
{
throw new ArgumentNullException(nameof(op));
}
var idn = new Identity(ResolveName(first, name));
if (selector == null)
{
if (waitForFirstToReady)
{
first.Updated += (time, updated) => {
if (first.IsReady)
{
idn.Update(time, op(updated.Value));
}
};
}
else
{
first.Updated += (time, updated) => idn.Update(time, op(updated.Value));
}
}
else
{
if (waitForFirstToReady)
{
first.Updated += (time, updated) => {
if (first.IsReady)
{
idn.Update(time, new DoubleArrayScalar(op(selector(updated))));
}
};
}
else
{
first.Updated += (time, updated) => idn.Update(time, new DoubleArrayScalar(op(selector(updated))));
}
}
first.Resetted += sender => idn.Reset();
return(idn);
}
