public SkinEffectActivity() : base(Resource.Layout.skin_effect_layout)
{
Loaded += delegate
{
//
var tbFrequency = FindViewById <EditText>(Resource.Id.tb_frequency);
var tbResitivity = FindViewById <EditText>(Resource.Id.tb_resistivity);
var tbPermeability = FindViewById <EditText>(Resource.Id.tb_permeability);
var lbOutput = FindViewById <TextView>(Resource.Id.lb_output);
FindViewById <Button>(Resource.Id.btn_evaluate).Click += delegate
{
if (double.TryParse(tbPermeability.Text, out var pm) &&
double.TryParse(tbFrequency.Text, out var freq) &&
double.TryParse(tbResitivity.Text, out var resistivity))
{
double a = Math.PI * pm * freq;
var SkinDepth = resistivity / a;
var b = Math.Sqrt(SkinDepth);
lbOutput.Text = b.ToString();
}
else
{
ToastHelpers.ShowRequiredInputs(this);
}
};
};
}
public RadarRangeActivity() : base(Resource.Layout.radar_range_layout)
{
Loaded += delegate
{
var tbPulsePeakPower = FindViewById <EditText>(Resource.Id.tb_pulse_peak_power);
var tbMaxPowerGain = FindViewById <EditText>(Resource.Id.tb_max_power_gain);
var tbAntennaAperture = FindViewById <EditText>(Resource.Id.tb_antenna_aperture);
var tbCrossSectionArea = FindViewById <EditText>(Resource.Id.tb_cross_section_area);
var tbPowerReceived = FindViewById <EditText>(Resource.Id.tb_power_received);
var lbResult = FindViewById <TextView>(Resource.Id.lb_output);
//
FindViewById <Button>(Resource.Id.btn_evaluate).Click += delegate
{
if (double.TryParse(tbPulsePeakPower.Text, out var pulsePeakPower) &&
double.TryParse(tbMaxPowerGain.Text, out var maxPowerGain) &&
double.TryParse(tbAntennaAperture.Text, out var aperture) &&
double.TryParse(tbCrossSectionArea.Text, out var crossSectionArea) &&
double.TryParse(tbPowerReceived.Text, out var powerReceived))
{
lbResult.Text = ((pulsePeakPower * maxPowerGain * aperture * crossSectionArea) / (Math.Pow(88.0 / 7.0, 2) * powerReceived)).ToString();
}
else
{
ToastHelpers.ShowRequiredInputs(this);
}
};
};
}
public SimultaneousEquationActivity()
: base(Resource.Layout.simultaneous_equation_layout)
{
Loaded += delegate
{
//
var tbA = FindViewById<EditText>(Resource.Id.tb_a);
var tbB = FindViewById<EditText>(Resource.Id.tb_b);
var tbC = FindViewById<EditText>(Resource.Id.tb_c);
var tbD = FindViewById<EditText>(Resource.Id.tb_d);
var tbE = FindViewById<EditText>(Resource.Id.tb_e);
var tbF = FindViewById<EditText>(Resource.Id.tb_f);
var lbX = FindViewById<TextView>(Resource.Id.lb_output_x);
var lbY = FindViewById<TextView>(Resource.Id.lb_output_y);
//
FindViewById<Button>(Resource.Id.btn_evaluate).Click += delegate
{
if (double.TryParse(tbA.Text, out var a) &&
double.TryParse(tbB.Text, out var b) &&
double.TryParse(tbC.Text, out var c) &&
double.TryParse(tbD.Text, out var d) &&
double.TryParse(tbE.Text, out var e) &&
double.TryParse(tbF.Text, out var f))
{
//
double y = ((a * f) - (d * c)) / ((a * e) - (b * d));
double x = (c - (b * y)) / a;
lbX.Text = x.ToString("N");
lbY.Text = y.ToString("N");
}
else
{
ToastHelpers.ShowRequiredInputs(this);
}
};
};
}
public CapacitiveReactanceActivity() : base(Resource.Layout.capacitive_reactance_layout)
{
Loaded += delegate
{
//
var tbCapacitanceFreq = FindViewById <EditText>(Resource.Id.tb_capacitive_freq);
var tbCapCapacitance = FindViewById <EditText>(Resource.Id.tb_capacitive_capacitance);
var lbCapacitanceOut = FindViewById <TextView>(Resource.Id.lb_capacitance_out);
//
var tbInductiveFreq = FindViewById <EditText>(Resource.Id.tb_inductive_freq);
var tbInductiveInductance = FindViewById <EditText>(Resource.Id.tb_inductive_inductance);
var lbInductanceOut = FindViewById <TextView>(Resource.Id.lb_inductance_out);
//
FindViewById <Button>(Resource.Id.btn_evaluate_capacitance).Click += delegate
{
if (double.TryParse(tbCapacitanceFreq.Text, out var freq) && double.TryParse(tbCapCapacitance.Text, out var cap))
{
lbCapacitanceOut.Text = (1.0 / (2.0 * Math.PI * freq * cap)).ToString();
}
else
{
ToastHelpers.ShowRequiredInputs(this);
}
};
FindViewById <Button>(Resource.Id.btn_evaluate_reactance).Click += delegate
{
if (double.TryParse(tbInductiveFreq.Text, out var freq) && double.TryParse(tbInductiveInductance.Text, out var inductance))
{
lbInductanceOut.Text = (2.0 * Math.PI * freq * inductance).ToString();
}
else
{
ToastHelpers.ShowRequiredInputs(this);
}
};
};
}
public PowerDensityCalculatorActivity() : base(Resource.Layout.power_density_layout)
{
Loaded += delegate
{
var tbPower = FindViewById <EditText>(Resource.Id.tb_power);
var tbGain = FindViewById <EditText>(Resource.Id.tb_gain);
var tbDistance = FindViewById <EditText>(Resource.Id.tb_distance);
var powerUnitSpinner = FindViewById <Spinner>(Resource.Id.spinner_out_power_unit);
var gainUnitSpinner = FindViewById <Spinner>(Resource.Id.spinner_gain_unit);
var distanceSpinner = FindViewById <Spinner>(Resource.Id.spinner_distancer_unit);
//
var lbOutput = FindViewById <TextView>(Resource.Id.lb_output);
//
powerUnitSpinner.Adapter = new ArrayAdapter <string>(this, Android.Resource.Layout.SimpleSpinnerDropDownItem, new string[]
{
"mW",
"dbM",
"dBW",
"W"
});
gainUnitSpinner.Adapter = new ArrayAdapter <string>(this, Android.Resource.Layout.SimpleSpinnerDropDownItem, new string[]
{
"Linear"
});
distanceSpinner.Adapter = new ArrayAdapter <string>(this, Android.Resource.Layout.SimpleSpinnerDropDownItem, new string[]
{
"Inches",
"Yards",
"Miles",
"Feets",
"Metres"
});
FindViewById <Button>(Resource.Id.btn_evaluate).Click += delegate
{
if (double.TryParse(tbPower.Text, out var pOut) &&
double.TryParse(tbDistance.Text, out var D) &&
double.TryParse(tbGain.Text, out var gain))
{
switch (powerUnitSpinner.SelectedItemPosition)
{
case 0:
pOut = pOut / 100.0;
break;
case 1:
pOut = Math.Pow(10, pOut / 10.0) / 1000.0;
break;
case 2:
pOut = Math.Pow(10, pOut / 10.0);
break;
}
switch (distanceSpinner.SelectedItemPosition)
{
case 0:
D = 0.0254 * D;
break;
case 1:
D = 0.9144 * D;
break;
case 2:
D = 1609.344 * D;
break;
case 3:
D = D * 0.3048;
break;
}
//
double power = (pOut * gain) / (4 * Math.PI * (D * D));
lbOutput.Text = power.ToString();
}
else
{
ToastHelpers.ShowRequiredInputs(this);
}
};
};
}
public NewtonRaphsonActivity() : base(Resource.Layout.newton_raphson_layout)
{
Loaded += delegate
{
//
var tbA = FindViewById <EditText>(Resource.Id.tb_a);
var tbB = FindViewById <EditText>(Resource.Id.tb_b);
var tbC = FindViewById <EditText>(Resource.Id.tb_c);
var tbD = FindViewById <EditText>(Resource.Id.tb_d);
var lbX1 = FindViewById <TextView>(Resource.Id.lb_x1);
var lbX2 = FindViewById <TextView>(Resource.Id.lb_x2);
var lbX3 = FindViewById <TextView>(Resource.Id.lb_x3);
FindViewById <Button>(Resource.Id.btn_evaluate).Click += delegate
{
if (double.TryParse(tbA.Text, out var a) && double.TryParse(tbB.Text, out var b) &&
double.TryParse(tbC.Text, out var c) && double.TryParse(tbD.Text, out var d))
{
double x = 1;
double y1 = 3 * a * x * x + 2 * b * x + c;
if (y1 == 0)
{
x = x + 0.5;
y1 = 3 * a * x * x + 2 * b * x + c;
}
int i = 0;
double y2 = a * x * x * x + b * x * x + c * x + d;
double y = x - y2 / y1;
while (x != y && i != 100)
{
i = i + 1;
x = y;
y1 = 3 * a * x * x + 2 * b * x + c;
y2 = a * x * x * x + b * x * x + c * x + d;
y = x - y2 / y1;
}
double xo = x;
double x1 = -1;
x = x1;
y1 = 3 * a * x * x + 2 * b * x + c;
if (y1 == 0)
{
x = x + 0.5;
y1 = 3 * a * x * x + 2 * b * x + c;
}
int i1 = 0;
y2 = a * x * x * x + b * x * x + c * x + d;
y = x - y2 / y1;
while (x != y && i1 != 100)
{
i = i1 + 1;
x = y;
y1 = 3 * a * x * x + 2 * b * x + c;
y2 = a * x * x * x + b * x * x + c * x + d;
y = x - y2 / y1;
}
x1 = x;
double x2 = 15;
x = x2;
y1 = 3 * a * x * x + 2 * b * x + c;
if (y1 == 0)
{
x = x + 0.5;
y1 = 3 * a * x * x + 2 * b * x + c;
}
int i2 = 0;
y2 = a * x * x * x + b * x * x + c * x + d;
y = x - y2 / y1;
while (x != y && i2 != 100)
{
i = i + 1;
x = y;
y1 = 3 * a * x * x + 2 * b * x + c;
y2 = a * x * x * x + b * x * x + c * x + d;
y = x - y2 / y1;
}
x2 = x;
//
lbX1.Text = xo.ToString();
if (x1 != xo && x1 != x2)
{
lbX2.Text = x1.ToString();
}
else
{
lbX2.Text = "0";
}
if (x2 != xo && x2 != x1)
{
lbX3.Text = x2.ToString();
}
else
{
lbX3.Text = "0";
}
}
else
{
ToastHelpers.ShowRequiredInputs(this);
}
};
};
}
