private static PointCollection Reverse(PointCollection pointCollection)
{
if (pointCollection == null) throw new ArgumentNullException("pointCollection");
return new PointCollection(pointCollection.Reverse().ToList());
}
public void gestureCompleted()
{
// Minimum number of frames of no motion to be segmented as a gesture
int motion_threshold = 3; //originally 5
// Minimum length of time after a gesture is completed before another gesture can be started.
int ignore_threshold = 10;
// If users are still reseting their hands, ignore all the movements and clear all buffers.
if (ignoreFrames <= ignore_threshold)
{
motion_free = 0;
readyforgesture = false;
colorBox.Background = new SolidColorBrush(Colors.Red);
gesture_started = false;
//Clear the buffers
foreach (List <int> sublist in history)
{
sublist.Clear();
}
foreach (List <int> sublist in inverse_history)
{
sublist.Clear();
}
pointHist.Clear();
}
if (gesture_started && ignoreFrames > ignore_threshold && motion_free > motion_threshold && selectedChannels >= 2)
{
// Use LINQ to remove all the frames at the end that correspond to the motion free periods.
pointHist = new PointCollection(pointHist.Reverse().Skip(motion_threshold).Reverse());
S = new StylusPointCollection(S.Reverse().Skip(motion_threshold).Reverse());
for (int i = 0; i < history.Count; i++)
{
history[i] = new List <int>(history[i].Reverse <int>().Skip(motion_threshold).Reverse <int>());
inverse_history[i] = new List <int>(inverse_history[i].Reverse <int>().Skip(motion_threshold).Reverse <int>());
}
//If we are in detect mode, pass it to WEKA for classification.
if (detectMode.IsChecked.Value && pointHist.Count > 9)
{
//Call function to find features and test with weka machine
if (selectedChannels == 2)
{
float[] speakers = { (float)KF[0].speakerTheta, (float)KF[1].speakerTheta };
//temp stores the string identifier of the gesture
string temp = WekaHelper.Classify(false, pointHist.Count() * waveIn.BufferMilliseconds,
true, new List <float>(speakers), pointHist, S, history, inverse_history);
//switch statement to rename up/down gestures to forward/back when displaying in the application
switch (temp)
{
case "swipe_up":
temp = "swipe_forward";
break;
case "swipe_down":
temp = "swipe_back";
break;
case "tap_up":
temp = "tap_forward";
break;
case "tap_down":
temp = "tap_back";
break;
}
gestureDetected.Text = temp;
//TODO Put interaction with other applications in this switch statement
// Allows for changing between workspaces in windows 10.
if (shellIntegration.IsChecked.Value)
{
switch (temp)
{
case "swipe_forward":
sim.Keyboard.KeyDown(VirtualKeyCode.LWIN);
sim.Keyboard.KeyPress(VirtualKeyCode.TAB);
sim.Keyboard.KeyUp(VirtualKeyCode.LWIN);
break;
case "swipe_back":
break;
case "swipe_left":
if (!chrome)
{
sim.Keyboard.KeyDown(VirtualKeyCode.LWIN);
sim.Keyboard.KeyDown(VirtualKeyCode.LCONTROL);
sim.Keyboard.KeyPress(VirtualKeyCode.LEFT);
sim.Keyboard.KeyUp(VirtualKeyCode.LWIN);
sim.Keyboard.KeyUp(VirtualKeyCode.LCONTROL);
}
else
{
sim.Keyboard.KeyDown(VirtualKeyCode.LCONTROL);
sim.Keyboard.KeyDown(VirtualKeyCode.LSHIFT);
sim.Keyboard.KeyPress(VirtualKeyCode.TAB);
sim.Keyboard.KeyUp(VirtualKeyCode.LSHIFT);
sim.Keyboard.KeyUp(VirtualKeyCode.LCONTROL);
}
break;
case "swipe_right":
if (!chrome)
{
sim.Keyboard.KeyDown(VirtualKeyCode.LWIN);
sim.Keyboard.KeyDown(VirtualKeyCode.LCONTROL);
sim.Keyboard.KeyPress(VirtualKeyCode.RIGHT);
sim.Keyboard.KeyUp(VirtualKeyCode.LWIN);
sim.Keyboard.KeyUp(VirtualKeyCode.LCONTROL);
}
else
{
sim.Keyboard.KeyDown(VirtualKeyCode.LCONTROL);
sim.Keyboard.KeyPress(VirtualKeyCode.TAB);
sim.Keyboard.KeyUp(VirtualKeyCode.LCONTROL);
}
break;
case "tap_forward":
chrome = true;
break;
case "tap_back":
chrome = false;
break;
case "tap_left":
break;
case "tap_right":
break;
}
}
}
ignoreFrames = 0;
}
// Clear the buffers
foreach (List <int> sublist in history)
{
sublist.Clear();
}
foreach (List <int> sublist in inverse_history)
{
sublist.Clear();
}
pointHist.Clear();
// Prepare for next gesture (might need a button press)
readyforgesture = false;
colorBox.Background = new SolidColorBrush(Colors.Red);
gesture_started = false;
motion_free = 0;
}
}
//****************************************************
// Split a panel into two sub-panels
public bool Split(double start, double radius, double depth, out Panel panel_1, out Panel panel_2)
{
bool addTo_1 = true;
PointCollection points_1 = new PointCollection();
PointCollection points_2 = new PointCollection();
Point points_2_start = new Point(0, 0);
Point top = new Point();
Point bottom = new Point();
for (int ii = 0; ii < Points.Count - 1; ii++)
{
Point first = Points[ii];
Point second = Points[ii + 1];
Point startPoint = new Point();
double min = Math.Min(first.X, second.X);
double max = Math.Max(first.X, second.X);
if (min <= start && max >= start)
{
if (first.X == start)
{
startPoint = first;
}
else if (second.X == start)
{
startPoint = second;
}
else
{
// need to find point on line between first and second
// NOTE: because of the above conditions, we can't have a vertical line. They are ruled out.
double slope = (second.Y - first.Y) / (second.X - first.X);
startPoint = new Point(start, first.Y + slope * (start - first.X));
}
if (addTo_1)
{
top = startPoint;
if (first != startPoint)
{
points_1.Add(first);
}
points_2.Add(top);
}
else
{
bottom = startPoint;
if (first != startPoint)
{
points_2.Add(first);
}
PointCollection splitter_1 = PanelSplitter.Tongues(top, bottom, (int)radius, depth);
IEnumerable <Point> splitter_2 = splitter_1.Reverse();
foreach (Point p in splitter_1)
{
points_1.Add(p);
}
foreach (Point p in splitter_2)
{
points_2.Add(p);
}
}
addTo_1 = !addTo_1;
}
else
{
if (addTo_1)
{
points_1.Add(Points[ii]);
}
else
{
points_2.Add(Points[ii]);
}
}
}
// close the panels
points_1.Add(points_1[0]);
//points_2.Add(top);
panel_1 = new Panel(points_1);
panel_2 = new Panel(points_2);
panel_1.name = name + "A";
panel_2.name = name + "B";
return(true);
}