private void tmInput_Tick(object sender, EventArgs e)
{
List <Touch> touches = pm.Touches.Values.ToList();
if (touches.Count == 2)
{
FingerTransform ft = new FingerTransform(touches[0].X, touches[0].Y,
touches[1].X, touches[1].Y);
if (oldFt != null)
{
float dScale = 1 + (ft.Distance - oldFt.Distance) / oldFt.Distance;
Console.WriteLine(dScale);
scale *= dScale;
refreshImg();
}
oldFt = ft;
}
else
{
oldFt = null;
}
}
public virtual bool Think(List <Touch> allTouches, ref Touch stylus, ref Touch mouse, int screenWidth, int screenHeight)
{
bool changes = false;
List <Touch> fingers = new List <Touch>();
for (int i = 0; i < allTouches.Count; i++)
{
if (allTouches[i].TouchDevice == TouchDevice.Finger &&
Collides(allTouches[i].X, allTouches[i].Y, screenWidth, screenHeight))
{
fingers.Add(allTouches[i]);
allTouches.RemoveAt(i--);
}
}
if (fingers.Count == 1 && lastTouch.X < 0)
{
// 1 Finger Down
lastTouch = new Point(fingers[0].X, fingers[0].Y);
}
else if (fingers.Count == 1)
{
// 1 Finger Moved
if (transformMove)
{
int diffX = fingers[0].X - lastTouch.X;
int diffY = fingers[0].Y - lastTouch.Y;
lastTouch = new Point(fingers[0].X, fingers[0].Y);
Matrix3x3 translation = Matrix3x3.Translation(diffX, diffY);
intTransformation *= translation;
changes = true;
}
}
else if (fingers.Count != 1 && lastTouch.X >= 0)
{
// 1 Finger Up
lastTouch = new Point(-1, -1);
}
if (fingers.Count == 2 && lastDblTouch == null)
{
// 2 Fingers Down
lastDblTouch = new FingerTransform(fingers[0].X, fingers[0].Y,
fingers[1].X, fingers[1].Y);
}
else if (fingers.Count == 2)
{
// 2 Fingers Move
FingerTransform ft = new FingerTransform(fingers[0].X, fingers[0].Y,
fingers[1].X, fingers[1].Y);
int pDiffX = ft.Position.X - lastDblTouch.Position.X;
int pDiffY = ft.Position.Y - lastDblTouch.Position.Y;
float rDiff = ft.Rotation - lastDblTouch.Rotation;
float sDiff = 1 + (ft.Distance - lastDblTouch.Distance) / lastDblTouch.Distance;
lastDblTouch = ft;
Matrix3x3 mat = new Matrix3x3();
if (transformMove)
{
mat.TransformTranslate(pDiffX, pDiffY);
}
if (transformRotate)
{
mat.TransformRotateAt(-rDiff, ft.Position.X, ft.Position.Y);
}
if (transformScale)
{
mat.TransformScaleAt(sDiff, sDiff, ft.Position.X, ft.Position.Y);
}
intTransformation *= mat;
changes = true;
}
else if (fingers.Count != 2 && lastDblTouch != null)
{
// 2 Finger Up
lastDblTouch = null;
}
if (changes)
{
Transformation = new Matrix3x3(intTransformation);
}
return(changes);
}
