//-///////////////////////////////////////////////////////////////////////
//-///////////////////////////////////////////////////////////////////////
private void text(V2 pos, string text)
{
if (_graphics == null)
{
return;
}
Matrix oldTransform = _graphics.Transform;
_graphics.Transform = identityMatrix;
V2 screenPos = Misc.TransformPoint(oldTransform, pos);
_graphics.DrawString(text, SystemFonts.DefaultFont, _drawBrush, screenPos.AsPointF());
_graphics.Transform = oldTransform;
}
//-///////////////////////////////////////////////////////////////////////
//-///////////////////////////////////////////////////////////////////////
private void HandleMouseMove(object sender, MouseEventArgs e)
{
//_mouseState = new MouseState(e.Location, GetScenePosForLocation(e.Location), e.Button);
switch (_dragState)
{
case DragState.None:
{
switch (e.Button)
{
case MouseButtons.None:
{
V2 scenePos = GetScenePosForLocation(e.Location);
foreach (Handle handle in _handles)
{
handle.HandleMouseEvent(sender, e, scenePos);
}
}
break;
case MouseButtons.Left:
{
V2 scenePos = GetScenePosForLocation(e.Location);
foreach (Handle handle in _handles)
{
if (handle.HandleMouseEvent(sender, e, scenePos))
{
_dragState = DragState.Handle;
_dragHandle = handle;
break;
}
}
}
break;
case MouseButtons.Middle:
{
_dragControlPos = e.Location;
_dragScenePos = GetScenePosForLocation(e.Location);
if ((Control.ModifierKeys & Keys.Alt) != 0)
{
_dragState = DragState.Translate;
}
else if ((Control.ModifierKeys & Keys.Control) != 0)
{
_dragState = DragState.Rotate;
}
}
break;
}
}
break;
case DragState.Rotate:
{
if ((e.Button & MouseButtons.Middle) != 0)
{
float theta = (float)((e.Location.X - _dragControlPos.X) / 10.0 * Math.PI);
_matrix.RotateAt(theta, _dragScenePos.AsPointF());
_dragControlPos = e.Location;
Invalidate();
}
else
{
_dragState = DragState.None;
}
}
break;
case DragState.Translate:
{
if ((e.Button & MouseButtons.Middle) != 0)
{
_matrix.Translate(e.Location.X - _dragControlPos.X, e.Location.Y - _dragControlPos.Y, MatrixOrder.Append);
_dragControlPos = e.Location;
Invalidate();
}
else
{
_dragState = DragState.None;
}
}
break;
case DragState.Handle:
{
_dragHandle.HandleMouseEvent(sender, e, GetScenePosForLocation(e.Location));
if ((e.Button & MouseButtons.Left) == 0)
{
_dragHandle = null;
_dragState = DragState.None;
}
}
break;
}
}
