/// <summary>
/// Update location of object according given x/y offset
/// </summary>
/// <param name="_pane"></param>
/// <param name="dx">x offset in screen</param>
/// <param name="dy">y offset in screen</param>
virtual public void UpdateLocation(PaneBase _pane, float dx, float dy)
{
GraphPane pane = _pane as GraphPane;
// convert location to screen coordinate
PointF ptPix1 = pane.GeneralTransform(_location.X1, _location.Y1,
_location.CoordinateFrame);
PointF ptPix2 = pane.GeneralTransform(_location.X2, _location.Y2,
_location.CoordinateFrame);
// calc new position
ptPix1.X += (float)dx;
ptPix1.Y += (float)dy;
ptPix2.X += (float)dx;
ptPix2.Y += (float)dy;
// convert to user coordinate
PointD pt1 = pane.GeneralReverseTransform(ptPix1, _location.CoordinateFrame);
PointD pt2 = pane.GeneralReverseTransform(ptPix2, _location.CoordinateFrame);
_location.X = pt1.X;
_location.Y = pt1.Y;
_location.Width = pt2.X - pt1.X;
_location.Height = pt2.Y - pt1.Y;
OnLocationChanged(pane, dx, dy);
}
override public void ResizeEdge(int edge, PointF pt, PaneBase pane)
{
// when edge is int.MaxValue, we assume it is last point
if (edge == int.MaxValue)
{
edge = _points.Count - 1;
}
// do nothing if edge is invalid
if (edge < 0 || edge >= _points.Count)
{
return;
}
GraphPane gPane = pane as GraphPane;
PointD ptPix = gPane.GeneralReverseTransform(
pt.X,
pt.Y, _location.CoordinateFrame);
_points[edge] = ptPix;
}
public override void UpdateLocation(PaneBase _pane, float dx, float dy)
{
GraphPane pane = _pane as GraphPane;
// update each points
for (int i = 0; i < _points.Count; i++)
{
// convert location to screen coordinate
PointF ptPix1 = pane.GeneralTransform(_points[i].X, _points[i].Y,
_location.CoordinateFrame);
// calc new position
ptPix1.X += (float)dx;
ptPix1.Y += (float)dy;
// convert to user coordinate
PointD pt1 = pane.GeneralReverseTransform(ptPix1, _location.CoordinateFrame);
_points[i] = pt1;
}
OnLocationChanged(pane, dx, dy);
}
override public void ResizeEdge(int edge, PointF pt, PaneBase pane)
{
// set edget to right-bottom edge when edget is -1
if (edge == int.MaxValue)
{
edge = 1;
}
/** sample code
* // convert location to screen coordinate
* PointF ptPix1 = pane.GeneralTransform(obj.Location.X1, obj.Location.Y1,
* obj.Location.CoordinateFrame);
*
* PointF ptPix2 = pane.GeneralTransform(obj.Location.X2, obj.Location.Y2,
* obj.Location.CoordinateFrame);
*
* // calc new position
* ptPix1.X += (mousePt.X - _dragStartPt.X);
* ptPix1.Y += (mousePt.Y - _dragStartPt.Y);
*
* ptPix2.X += (mousePt.X - _dragStartPt.X);
* ptPix2.Y += (mousePt.Y - _dragStartPt.Y);
*
* // convert to user coordinate
* PointD pt1 = pane.GeneralReverseTransform(ptPix1, obj.Location.CoordinateFrame);
* PointD pt2 = pane.GeneralReverseTransform(ptPix2, obj.Location.CoordinateFrame);
*
* obj.Location.X = pt1.X;
* obj.Location.Y = pt1.Y;
* obj.Location.Width = pt2.X - pt1.X;
* obj.Location.Height = pt2.Y - pt1.Y;
*/
GraphPane gPane = pane as GraphPane;
switch (edge)
{
case 0: // resize left
case 1: // resize right
{
PointF o = Center(gPane);
double ds = Utils.Distance(pt.Y - o.Y, pt.X - o.X);
double angle = Utils.AngleInDegree(pt.Y - o.Y, pt.X - o.X);
if (ds > 0.01)
{
//_location.X = (o.X - ds) / pane.Rect.Width;
//_location.Width = ds * 2 / pane.Rect.Width;
PointD pt1 = gPane.GeneralReverseTransform((float)(o.X - ds), 0,
_location.CoordinateFrame);
PointD pt2 = gPane.GeneralReverseTransform((float)(o.X + ds), 0,
_location.CoordinateFrame);
_location.X = pt1.X;
_location.Width = pt2.X - pt1.X;
}
Angle = (float)angle;
}
break;
case 2: // resize top
case 3: // resize bottom
{
PointF o = Center(pane);
double ds = Utils.Distance(pt.Y - o.Y, pt.X - o.X);
if (ds > 0.01)
{
//_location.Y = (o.Y - ds) / pane.Rect.Height;
//_location.Height = ds * 2 / pane.Rect.Height;
PointD pt1 = gPane.GeneralReverseTransform(0, (float)(o.Y - ds),
_location.CoordinateFrame);
PointD pt2 = gPane.GeneralReverseTransform(0, (float)(o.Y + ds),
_location.CoordinateFrame);
_location.Y = pt1.Y;
_location.Height = pt2.Y - pt1.Y;
}
}
break;
}
}
override public void ResizeEdge(int edge, PointF pt, PaneBase pane)
{
// set edget to right-bottom edge when edget is -1
if (edge == int.MaxValue)
{
edge = 4;
}
// do nothing if edge is invalid
if (edge < 0 || edge > 8)
{
return;
}
RectangleF[] edges = EdgeRects(pane);
//RectangleF s = edges[edge];
GraphPane gPane = pane as GraphPane;
// convert location to screen coordinate
PointF ptPix1 = gPane.GeneralTransform(_location.X1, _location.Y1,
_location.CoordinateFrame);
PointF ptPix2 = gPane.GeneralTransform(_location.X2, _location.Y2,
_location.CoordinateFrame);
/*
* // calc new position
* ptPix1.X += (mousePt.X - _dragStartPt.X);
* ptPix1.Y += (mousePt.Y - _dragStartPt.Y);
*
* ptPix2.X += (mousePt.X - _dragStartPt.X);
* ptPix2.Y += (mousePt.Y - _dragStartPt.Y);
*
* // convert to user coordinate
* PointD pt1 = pane.GeneralReverseTransform(ptPix1, obj.Location.CoordinateFrame);
* PointD pt2 = pane.GeneralReverseTransform(ptPix2, obj.Location.CoordinateFrame);
*
* obj.Location.X = pt1.X;
* obj.Location.Y = pt1.Y;
* obj.Location.Width = pt2.X - pt1.X;
* obj.Location.Height = pt2.Y - pt1.Y;
*/
//float dx = (pt.X - s.X) / pane.Rect.Width;
//float dy = (pt.Y - s.Y) / pane.Rect.Height;
//float dx = (pt.X - s.X - 2) ;
//float dy = (pt.Y - s.Y - 2) ;
/*
* 0 1 2
+---------------+
| |
| 7 | | 3
| |
+---------------+
| 6 5 4
*/
switch (edge)
{
case 0:
//_location.X += dx;
//_location.Y += dy;
//_location.Width -= dx;
//_location.Height -= dy;
// calc new position
//ptPix1.X += dx;
//ptPix1.Y += dy;
ptPix1.X = pt.X;
ptPix1.Y = pt.Y;
break;
case 1:
//_location.Y += dy;
//_location.Height -= dy;
// calc new position
//ptPix1.Y += dy;
ptPix1.Y = pt.Y;
break;
case 2:
//_location.Y += dy;
//_location.Width += dx;
//_location.Height -= dy;
// calc new position
//ptPix1.Y += dy;
//ptPix2.X += dx;
ptPix1.Y = pt.Y;
ptPix2.X = pt.X;
break;
case 3:
//_location.Width += dx;
// calc new position
//ptPix2.X += dx;
ptPix2.X = pt.X;
break;
case 4:
//_location.Width += dx;
//_location.Height += dy;
// calc new position
//ptPix2.X += dx;
//ptPix2.Y += dy;
ptPix2.X = pt.X;
ptPix2.Y = pt.Y;
break;
case 5:
//_location.Height += dy;
// calc new position
//ptPix2.Y += dy;
ptPix2.Y = pt.Y;
break;
case 6:
//_location.X += dx;
//_location.Width -= dx;
//_location.Height += dy;
// calc new position
//ptPix1.X += dx;
//ptPix2.Y += dy;
ptPix1.X = pt.X;
ptPix2.Y = pt.Y;
break;
case 7:
//_location.X += dx;
//_location.Width -= dx;
// calc new position
//ptPix1.X += dx;
ptPix1.X = pt.X;
break;
}
//System.Diagnostics.Debug.WriteLine(string.Format("resize edget {4} pt1 {0} pt2 {1} s {2} pt {3} ",
// ptPix1, ptPix2, s, pt, edge));
// convert to user space coordinate
PointD pt1 = gPane.GeneralReverseTransform(ptPix1, _location.CoordinateFrame);
PointD pt2 = gPane.GeneralReverseTransform(ptPix2, _location.CoordinateFrame);
_location.X = pt1.X;
_location.Y = pt1.Y;
_location.Width = pt2.X - pt1.X;
_location.Height = pt2.Y - pt1.Y;
}