Extractor

block Extractor "Extract scalar signal out of signal vector dependent on IntegerRealInput index"
    extends Modelica.ComplexBlocks.Interfaces.ComplexMISO;

    parameter Boolean allowOutOfRange = false "Index may be out of range";
    parameter Complex outOfRangeValue = Complex(1e+10, 0) "Output signal if index is out of range";
    Modelica.Blocks.Interfaces.IntegerInput index annotation (Placement(transformation(
        origin = {0, -120},
        extent = {
            {-20, -20}, 
            {20, 20}},
        rotation = 90)));
protected
    Complex k[nin];
equation
    when {initial(), change(index)} then 
        for i in 1:nin loop
            k[i] = if index == i then Complex(1, 0) else Complex(0, 0);
        end for;
    end when;
    y = if not allowOutOfRange or 0 < index and index <= nin then k * u else outOfRangeValue;

    annotation (
        Icon(
            coordinateSystem(
                preserveAspectRatio = true,
                extent = {
                    {-100, -100}, 
                    {100, 100}}),
            graphics = {
                Rectangle(
                    extent = {
                        {-80, 50}, 
                        {-40, -50}},
                    lineColor = {85, 170, 255},
                    fillColor = {255, 255, 255},
                    fillPattern = FillPattern.Solid), 
                Polygon(
                    points = {
                        {-84.4104, 1.9079}, 
                        {-84.4104, -2.09208}, 
                        {-80.4104, -0.09208}, 
                        {-84.4104, 1.9079}},
                    lineColor = {85, 170, 255},
                    fillColor = {85, 170, 255},
                    fillPattern = FillPattern.Solid), 
                Line(
                    points = {
                        {-62, 2}, 
                        {-50.1395, 12.907}, 
                        {-39.1395, 12.907}},
                    color = {85, 170, 255}), 
                Line(
                    points = {
                        {-63, 4}, 
                        {-49, 40}, 
                        {-39, 40}},
                    color = {85, 170, 255}), 
                Line(
                    points = {
                        {-102, 0}, 
                        {-65.0373, -0.01802}},
                    color = {85, 170, 255}), 
                Ellipse(
                    extent = {
                        {-70.0437, 4.5925}, 
                        {-60.0437, -4.90745}},
                    lineColor = {85, 170, 255},
                    fillColor = {85, 170, 255},
                    fillPattern = FillPattern.Solid), 
                Line(
                    points = {
                        {-63, -5}, 
                        {-50, -40}, 
                        {-39, -40}},
                    color = {85, 170, 255}), 
                Line(
                    points = {
                        {-62, -2}, 
                        {-50.0698, -12.907}, 
                        {-39.0698, -12.907}},
                    color = {85, 170, 255}), 
                Polygon(
                    points = {
                        {-38.8808, -11}, 
                        {-38.8808, -15}, 
                        {-34.8808, -13}, 
                        {-38.8808, -11}},
                    lineColor = {85, 170, 255},
                    fillColor = {255, 255, 255},
                    fillPattern = FillPattern.Solid), 
                Polygon(
                    points = {
                        {-39, 42}, 
                        {-39, 38}, 
                        {-35, 40}, 
                        {-39, 42}},
                    lineColor = {85, 170, 255},
                    fillColor = {255, 255, 255},
                    fillPattern = FillPattern.Solid), 
                Polygon(
                    points = {
                        {-38.8728, -38.0295}, 
                        {-38.8728, -42.0295}, 
                        {-34.8728, -40.0295}, 
                        {-38.8728, -38.0295}},
                    lineColor = {85, 170, 255},
                    fillColor = {255, 255, 255},
                    fillPattern = FillPattern.Solid), 
                Polygon(
                    points = {
                        {-38.9983, 14.8801}, 
                        {-38.9983, 10.8801}, 
                        {-34.9983, 12.8801}, 
                        {-38.9983, 14.8801}},
                    lineColor = {85, 170, 255},
                    fillColor = {255, 255, 255},
                    fillPattern = FillPattern.Solid), 
                Rectangle(
                    extent = {
                        {-30, 50}, 
                        {30, -50}},
                    fillColor = {235, 235, 235},
                    fillPattern = FillPattern.Solid,
                    lineColor = {85, 170, 255}), 
                Line(
                    points = {
                        {100, 0}, 
                        {0, 0}},
                    color = {85, 170, 255}), 
                Line(
                    points = {
                        {0, 2}, 
                        {0, -104}},
                    color = {255, 128, 0}), 
                Line(
                    points = {
                        {-35, 40}, 
                        {-20, 40}},
                    color = {85, 170, 255}), 
                Line(
                    points = {
                        {-35, 13}, 
                        {-20, 13}},
                    color = {85, 170, 255}), 
                Line(
                    points = {
                        {-35, -13}, 
                        {-20, -13}},
                    color = {85, 170, 255}), 
                Line(
                    points = {
                        {-35, -40}, 
                        {-20, -40}},
                    color = {85, 170, 255}), 
                Polygon(
                    points = {
                        {0, 0}, 
                        {-20, 13}, 
                        {-20, 13}, 
                        {0, 0}, 
                        {0, 0}},
                    lineColor = {85, 170, 255}), 
                Ellipse(
                    extent = {
                        {-6, 6}, 
                        {6, -6}},
                    lineColor = {255, 128, 0},
                    fillColor = {255, 128, 0},
                    fillPattern = FillPattern.Solid)}),
        Documentation(info = "<html>\n<p>This block extracts a scalar output signal out the\nvector of input signals dependent on the Integer\nvalue of the additional u index:</p>\n<blockquote><pre>\ny = u [ index ] ;\n</pre></blockquote>\n<p>where index is an additional Integer input signal.</p>\n</html>"));
end Extractor;