public Vector2 GetFinishingPosition(TouchPositionSpace space)
{
Vector2 averageFinishPos = Vector2.Zero ;
foreach (String touchID in TouchIDs)
{
var tracker = inputEventSystem.GetTouchTracker(touchID);
var p = tracker.GetPosition(space);
averageFinishPos += p;
}
averageFinishPos /= TouchIDs.Length;
return averageFinishPos;
}
Vector2 GetPositionOfSampleAtIndex(int index, TouchPositionSpace space)
{
var pos = this.samples[index].Position;
var multiplier = Vector2.One;
var pps = panelSpec.PanelPhysicalSize.GetValueOrDefault (new Vector2 (0.16f, 0.09f));
switch (space)
{
case TouchPositionSpace.RealWorld:
if(platform.Host.CurrentOrientation == DeviceOrientation.Default ||
platform.Host.CurrentOrientation == DeviceOrientation.Upsidedown)
{
multiplier = new Vector2(pps.X, pps.Y);
}
else
{
multiplier = new Vector2(pps.Y, pps.X);
}
break;
case TouchPositionSpace.Screen:
if (this.platform.Host.CurrentOrientation == DeviceOrientation.Upsidedown )
{
pos.Y = - pos.Y;
pos.X = - pos.X;
}
else if (this.platform.Host.CurrentOrientation == DeviceOrientation.Leftside )
{
Single temp = pos.X;
pos.X = -pos.Y;
pos.Y = temp;
}
else if(this.platform.Host.CurrentOrientation == DeviceOrientation.Rightside )
{
Single temp = pos.X;
pos.X = pos.Y;
pos.Y = -temp;
}
Int32 w = this.platform.Status.Width;
Int32 h = this.platform.Status.Height;
//this.platform.System.GetEffectiveDisplaySize(ref w, ref h);
multiplier = new Vector2(w, h);
break;
}
pos *= multiplier;
return pos;
}
public Vector2 GetPosition(TouchPositionSpace space)
{
int numSamples = samples.Count;
var curPos = this.GetPositionOfSampleAtIndex(numSamples - 1, space);
return curPos;
}
public Vector2 GetVelocity(TouchPositionSpace space)
{
int numSamples = samples.Count;
if (numSamples > 1)
{
var currentTouch = this.samples[numSamples - 1];
var previousTouch = this.samples[numSamples - 2];
var currentPos = this.GetPositionOfSampleAtIndex(numSamples - 1, space);
var previousPos = this.GetPositionOfSampleAtIndex(numSamples - 2, space);
Single dt = currentTouch.Timestamp - previousTouch.Timestamp;
return (currentPos - previousPos) / dt;
}
return Vector2.Zero;
}
public Single GetDistanceTraveled(TouchPositionSpace posType)
{
Single distance = 0f;
for (Int32 i = 0; i < samples.Count; ++i)
{
if (i > 0)
{
var currentPosition = this.GetPositionOfSampleAtIndex(i, posType);
var previousPosition = this.GetPositionOfSampleAtIndex(i - 1, posType);
Single mag = (currentPosition - previousPosition).Length();
distance += mag;
}
}
return distance;
}
