package BondGraphLib

    connector BondPort "Bond graph power port"
        Real e "Effort variable";
        flow Real f "Flow variable";annotation(
        Icon(graphics = {Rectangle(lineColor = {0, 0, 127}, fillColor = {0, 0, 127},fillPattern = FillPattern.Solid, extent = {{-60, 60}, {60, -60}})}));
    end BondPort;

    model J1 "Bond graph 1-junction (common flow, efforts sum to zero)"
        parameter Integer N(min=1) = 2 "# of power ports";
        parameter Real s[N] = fill(1.0, N)
        "Bond orientation signs used in the effort balance";
        BondPort P[N] "Power ports" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {0, 80}, extent = {{-10, -10}, {10, 10}})));
        Real f;
    equation
        // Efforts sum to zero, with signs from bond directions
        sum(s[i] * P[i].e for i in 1:N) = 0;

        // Flows are all equal
        for i in 2:N loop
            P[i].f = P[i-1].f;
        end for;
        f = P[1].f;
        annotation(
        Icon(graphics = {Text(extent = {{-100, 100}, {100, -100}}, textString = "1")}));
    end J1;

    model J0 "Bond graph 0-junction (common effort, flows sum to zero)"
        parameter Integer N(min=1) = 2 "# of power ports";
        parameter Real s[N] = fill(1.0, N)
        "Bond orientation signs used in the effort balance";
        BondPort P[N] "Power ports" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {0, 80}, extent = {{-10, -10}, {10, 10}})));
        Real e;
    equation
        // Flows sum to zero, with signs from bond directions
        sum(s[i] * P[i].f for i in 1:N) = 0;

        // Efforts are all equal
        for i in 2:N loop
            P[i].e = P[1].e;
        end for;
        e = P[1].e;
        annotation(
        Icon(graphics = {Text(extent = {{-100, 100}, {100, -100}}, textString = "0")}));
    end J0;

    partial model OnePortPassive "One-port passive bond graph element"
        BondPort p "Generic power port" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {0, 80}, extent = {{-10, -10}, {10, 10}})));
    end OnePortPassive;

    partial model OnePortEnergetic "One-port storage element"
        extends OnePortPassive annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {0, 80}, extent = {{-10, -10}, {10, 10}})));
        Real state "Conserved quantity";
    end OnePortEnergetic;

    model C "Bond graph C element"
        extends OnePortEnergetic(state(start=q0, fixed=true));
        parameter Real c(min=0) = 1 "Capacitance";
        parameter Real q0 = 0 "Initial stored quantity (charge)";
    equation
        der(state) = p.f;
        p.e = state / c;
        annotation(
        Icon(graphics = {Text(extent = {{-100, 100}, {100, -100}}, textString = "C")}));
    end C;

    model I "Bond graph I element"
        extends OnePortEnergetic(state(start=p0, fixed=true));
        parameter Real I(min=0) = 1 "Inertance / inductance / mass";
        parameter Real p0 = 0 "Initial stored quantity (momentum / flux)";
    equation
        der(state) = p.e;
        p.f = state / I;
        annotation(
        Icon(graphics = {Text(extent = {{-100, 100}, {100, -100}}, textString = "I")}));
    end I;

    model R "Bond graph resistor"
        extends OnePortPassive;
        parameter Real R(min=0) = 1 "Resistance";
    equation
        p.e = R * p.f;
        annotation(
        Icon(graphics = {Text(extent = {{-100, 100}, {100, -100}}, textString = "R")}));
    end R;

    model Se "Effort source"
        BondPort p annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}})));
        input Real e0 "Imposed effort";
    equation
        p.e = e0;
        annotation(
        Icon(graphics = {Text(origin = {-20, 0}, extent = {{-80, 100}, {80, -100}}, textString = "Se")}));
    end Se;

    model Sf "Flow source"
        BondPort p annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}})));
        input Real f0 "Imposed flow";
    equation
        p.f = f0;
        annotation(
        Icon(graphics = {Text(origin = {-20, 0}, extent = {{-80, 100}, {80, -100}}, textString = "Sf")}));
    end Sf;

    model TF "Bond graph transformer"
        BondPort p1 "Port 1" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {-80, 0}, extent = {{-10, -10}, {10, 10}})));
        BondPort p2 "Port 2" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}})));

        parameter Real n = 1 "Transformer ratio";
    equation
        p1.e = n * p2.e;
        p2.f = n * p1.f;
        annotation(
        Icon(graphics = {Text(extent = {{-80, 100}, {80, -100}}, textString = "TF")}));
    end TF;

    model GY "Bond graph gyrator"
        BondPort p1 "Port 1" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {-80, 0}, extent = {{-10, -10}, {10, 10}})));
        BondPort p2 "Port 2" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}})));
        parameter Real r = 1 "Gyrator modulus";
    equation
        p1.e = r * p2.f;
        p2.e = r * p1.f;
        annotation(
        Icon(graphics = {Text(extent = {{-80, 100}, {80, -100}}, textString = "GY")}));
    end GY;

    model mSe "Bond graph modulated effort source"
        BondPort p annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}})));
        Modelica.Blocks.Interfaces.RealInput e0 "Imposed effort" annotation(
        Placement(transformation(origin = {-8, -64}, extent = {{-20, -20}, {20, 20}}), iconTransformation(origin = {0, -78}, extent = {{-8, -8}, {8, 8}}, rotation = 90)));

    equation
        p.e = e0;
        annotation(
        Icon(graphics = {Text(origin = {-20, 0}, extent = {{-80, 100}, {80, -100}}, textString = "mSe")}));
    end mSe;

    model mSf "Bond graph modulated flow source"
        BondPort p annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}})));
        Modelica.Blocks.Interfaces.RealInput f0 "Imposed flow" annotation(
        Placement(transformation(origin = {-8, -64}, extent = {{-20, -20}, {20, 20}}), iconTransformation(origin = {0, -78}, extent = {{-8, -8}, {8, 8}}, rotation = 90)));

    equation
        p.f = f0;
        annotation(
        Icon(graphics = {Text(origin = {-20, 0}, extent = {{-80, 100}, {80, -100}}, textString = "mSf")}));
    end mSf;

    model mTF "Bond graph modulated transformer"
        BondPort p1 "Port 1" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {-80, 0}, extent = {{-10, -10}, {10, 10}})));
        BondPort p2 "Port 2" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}})));
        Modelica.Blocks.Interfaces.RealInput m "Modulation" annotation(
        Placement(transformation(origin = {-8, -64}, extent = {{-20, -20}, {20, 20}}), iconTransformation(origin = {0, -78}, extent = {{-8, -8}, {8, 8}}, rotation = 90)));
    equation
        p1.e = m * p2.e;
        p2.f = m * p1.f;
        annotation(
        Diagram(graphics),
        Icon(graphics = {Text(extent = {{-60, 100}, {60, -100}}, textString = "mTF")}));
    end mTF;

    model mGY "Bond graph modulated gyrator"
        BondPort p1 "Port 1" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {-80, 0}, extent = {{-10, -10}, {10, 10}})));
        BondPort p2 "Port 2" annotation(
        Placement(transformation(origin = {-44, 18}, extent = {{-10, -10}, {10, 10}}), iconTransformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}})));
        Modelica.Blocks.Interfaces.RealInput m "Modulation" annotation(
        Placement(transformation(origin = {-8, -64}, extent = {{-20, -20}, {20, 20}}), iconTransformation(origin = {0, -78}, extent = {{-8, -8}, {8, 8}}, rotation = 90)));
    equation
        p1.e = m * p2.f;
        p2.e = m * p1.f;
        annotation(
        Diagram(graphics),
        Icon(graphics = {Text(extent = {{-60, 100}, {60, -100}}, textString = "mGY")}));
    end mGY;

    annotation(
    Icon(graphics = {Text(origin = {50, 0}, extent = {{-50, 100}, {50, -100}}, textString = "R"), Line(origin = {-45.22, 20.19}, points = {{-58.7774, -20.1934}, {21.2226, -20.1934}, {-38.7774, 19.8066}}, thickness = 5), Line(origin = {-9.81, -8.19}, points = {{-10.1934, 48.1934}, {-10.1934, -31.8066}}, thickness = 5)}),
    uses(Modelica(version = "4.1.0")));
end BondGraphLib;