private void LowPassFilterDemo_Load(object sender, EventArgs e)
{
// Instantiate the low pass filter
lpf = new LowPassFilter();
// Set the sampling frequency according to the timer interval
lpf.SamplingFrequency = 1000 / timer1.Interval;
// Set the cutoff frequency to 1Hz
lpf.CutoffFrequency = 1;
// Enable the timer to run the filter animation
timer1.Enabled = true;
}
private void CascadedLowPassFilter_Load(object sender, EventArgs e)
{
// Instantiate the DeMIMOI collection to store and easily manage all the filters and the trackbars
lpf_cascade = new DeMIMOI_Collection("5th order LPF");
// Instantiate the low pass filter
lpf = new LowPassFilter[5];
for (int i = 0; i < lpf.Length; i++)
{
// Create each filter
lpf[i] = new LowPassFilter();
// Set the sampling frequency according to the timer interval
lpf[i].SamplingFrequency = 1000 / timer1.Interval;
// Set the cutoff frequency to 1Hz
lpf[i].CutoffFrequency = 1;
// Add the filter to the collection
lpf_cascade.Add(lpf[i]);
}
// Chain the filters by simply connecting them
for (int i = 1; i < lpf.Length; i++)
{
// Connect the input of the i-th filter to the i-1-th filter output
lpf[i].Inputs[0][0].ConnectTo(lpf[i - 1].Outputs[0][0]);
}
#region Create a DeMIMOI_Delegate for each trackBar control
// Create the input (user handled) trackbar
DeMIMOI_trackBar1 = new DeMIMOI_Delegate(null, // No inputs (the input is a in fact the trackbar value)
new DeMIMOI_Port(1), // One input with one output delay (the trackbar value at instant t)
DeMIMOI_trackBar1_Update); // The delegate function to call to update the model output
DeMIMOI_trackBar1.Name = "Trackbar1";
// Create the output (low pass filter i-th order) trackbars
DeMIMOI_trackBar_stage1 = new DeMIMOI_Delegate(new DeMIMOI_Port(1), // One input (the trackbar value to apply)
null, // No output (the output is in fact the trackbar value)
DeMIMOI_trackBar_stage1_Update); // The delegate function to call to update the trackbar value using the model inputs
DeMIMOI_trackBar_stage1.Name = "TrackBar Stage1";
DeMIMOI_trackBar_stage2 = new DeMIMOI_Delegate(new DeMIMOI_Port(1), null, DeMIMOI_trackBar_stage2_Update);
DeMIMOI_trackBar_stage2.Name = "TrackBar Stage2";
DeMIMOI_trackBar_stage3 = new DeMIMOI_Delegate(new DeMIMOI_Port(1), null, DeMIMOI_trackBar_stage3_Update);
DeMIMOI_trackBar_stage3.Name = "TrackBar Stage3";
DeMIMOI_trackBar_stage4 = new DeMIMOI_Delegate(new DeMIMOI_Port(1), null, DeMIMOI_trackBar_stage4_Update);
DeMIMOI_trackBar_stage4.Name = "TrackBar Stage4";
DeMIMOI_trackBar_stage5 = new DeMIMOI_Delegate(new DeMIMOI_Port(1), null, DeMIMOI_trackBar_stage5_Update);
DeMIMOI_trackBar_stage5.Name = "TrackBar Stage5";
#endregion
#region Connect each trackbar to each low pass filter input or output
// Connect the input of the first LPF to the user handled trackbar
DeMIMOI_trackBar1.Outputs[0][0].ConnectTo(lpf[0].Inputs[0][0]);
// Connect each i-th order trackbar to the i-th order LPF output
DeMIMOI_trackBar_stage1.Inputs[0][0].ConnectTo(lpf[0].Outputs[0][0]);
DeMIMOI_trackBar_stage2.Inputs[0][0].ConnectTo(lpf[1].Outputs[0][0]);
DeMIMOI_trackBar_stage3.Inputs[0][0].ConnectTo(lpf[2].Outputs[0][0]);
DeMIMOI_trackBar_stage4.Inputs[0][0].ConnectTo(lpf[3].Outputs[0][0]);
DeMIMOI_trackBar_stage5.Inputs[0][0].ConnectTo(lpf[4].Outputs[0][0]);
#endregion
// Add all the trackbars models to the collection
lpf_cascade.Add(DeMIMOI_trackBar1);
lpf_cascade.Add(DeMIMOI_trackBar_stage1);
lpf_cascade.Add(DeMIMOI_trackBar_stage2);
lpf_cascade.Add(DeMIMOI_trackBar_stage3);
lpf_cascade.Add(DeMIMOI_trackBar_stage4);
lpf_cascade.Add(DeMIMOI_trackBar_stage5);
// Display the graphviz code result of this models combination
textBox1.Text = lpf_cascade.GraphVizFullCode();
// Show the DeMIMOI objects interface
DeMIMOI.ShowVizInterface();
// Show the DeMIMOI Collections interface
DeMIMOI_Collection.ShowVizInterface();
// Enable the timer to run the filter animation
timer1.Enabled = true;
}