//--------------------------------------------------------------------------------------------------
public void TouchMove(int id, Point pos)
{
if (ViewportController == null)
{
return;
}
if (_MultiTouch)
{
// Double touch, pan
double dx = 0, dy = 0;
if (_FirstId == id)
{
dx = pos.X - _FirstPos.X;
dy = pos.Y - _FirstPos.Y;
_FirstPos = pos;
}
else if (_SecondId == id)
{
dx = pos.X - _SecondPos.X;
dy = pos.Y - _SecondPos.Y;
_SecondPos = pos;
}
double scale = ViewportController.Viewport.Scale * 1.1;
ViewportController.Pan(dx / scale, -dy / scale);
_MoveCallCount++;
// zoom and roll
var newFirstToSecond = Point.Subtract(_FirstPos, _SecondPos);
var diffDistance = newFirstToSecond.Length - _FirstToSecond.Length;
ViewportController.Zoom(diffDistance / 100.0);
var angle = Vector.AngleBetween(_FirstToSecond, newFirstToSecond);
ViewportController.Rotate(0, 0, angle);
_FirstToSecond = newFirstToSecond;
}
else
{
// Single touch, rotate
if (_FirstId == id)
{
var dx = (pos.X - _FirstPos.X) * 0.25;
var dy = (pos.Y - _FirstPos.Y) * 0.25;
ViewportController.Rotate(dy, -dx, 0.0);
_FirstPos = pos;
_MoveCallCount++;
}
}
if (_MoveCallCount > 3)
{
// Touch events are propagated to mouse events. If we do not cancel selection,
// the MouseUp event will select the body moved under the pointer.
ViewportController.WorkspaceController.CancelSelection();
}
}
//--------------------------------------------------------------------------------------------------
public void TouchMove(int id, Point pos)
{
if (ViewportController == null)
{
return;
}
if (_MultiTouch)
{
// Double touch, pan mode
if (_FirstId == id)
{
var dx = (pos.X - _FirstPos.X) / 2.0;
var dy = (pos.Y - _FirstPos.Y) / 2.0;
ViewportController.Pan(dx, -dy);
_FirstPos = pos;
_MoveCallCount++;
}
else if (_SecondId == id)
{
var dx = (pos.X - _SecondPos.X) / 2.0;
var dy = (pos.Y - _SecondPos.Y) / 2.0;
ViewportController.Pan(dx, -dy);
_SecondPos = pos;
_MoveCallCount++;
}
}
else
{
// Single touch, rotate mode
if (_FirstId == id)
{
var dx = (pos.X - _FirstPos.X) * 0.05;
var dy = (pos.Y - _FirstPos.Y) * 0.05;
ViewportController.Rotate(dy, -dx, 0.0);
_FirstPos = pos;
_MoveCallCount++;
}
}
if (_MoveCallCount > 3)
{
// Touch events are propagated to mouse events. If we do not cancel selection,
// the MouseUp event will select the body moved under the pointer.
ViewportController.WorkspaceController.CancelSelection();
}
}
