public void LoadShape(ShapeBase shape, Viewport viewport)
{
_shape = shape;
_viewport = viewport;
foreach (var ctrl in _controlPoints)
{
ctrl.LocationChanged -= Control_LocationChanged;
}
_controlPoints.Clear();
foreach (var v in _shape.Vertices)
{
var control = new ControlPoint((int)Math.Round(v.X), (int)Math.Round(v.Y), null);
control.LocationChanged += Control_LocationChanged;
control.Tag = v;
control.Cursor = Cursors.SizeAll;
_controlPoints.Add(control);
}
if (_shape.GetShapeType() == ShapeType.Ellipse)
{
_controlPoints.Add(new ControlPoint((int)Math.Round(_shape.Location.X + _shape.Size.Width / 2),
(int)Math.Round(_shape.Location.Y), null));
_controlPoints.Add(new ControlPoint((int)Math.Round(_shape.Location.X + _shape.Size.Width),
(int)Math.Round(_shape.Location.Y + _shape.Size.Height / 2), null));
_controlPoints.Add(new ControlPoint((int)Math.Round(_shape.Location.X + _shape.Size.Width / 2),
(int)Math.Round(_shape.Location.Y + _shape.Size.Height), null));
_controlPoints.Add(new ControlPoint((int)Math.Round(_shape.Location.X),
(int)Math.Round(_shape.Location.Y + _shape.Size.Height / 2), null));
}
}
public void Draw(ShapeBase shape, Graphics graphic)
{
if (shape == null)
{
return;
}
/* Draw shape*/
switch (shape.GetShapeType())
{
case ShapeType.Line:
case ShapeType.IsoscelesTriangle:
case ShapeType.Oblong:
case ShapeType.FreePencil:
case ShapeType.Polygon:
DrawPolygon((PolygonBase)shape, graphic);
break;
case ShapeType.Ellipse:
DrawEllipse((Ellipse)shape, graphic);
break;
}
}
private ShapeBase ShapesHitTest(PointF p)
{
ShapeBase shape = null;
foreach (var obj in _page.DrawingObjects)
{
if (obj.GetObjectType() == DrawingObjectType.Shape)
{
shape = obj as ShapeBase;
if (shape == null)
{
continue;
}
if (shape.GetShapeType() == ShapeType.Ellipse)
{
var e = shape as Ellipse;
var o = e.OrginalPoint.ToPoint();
var t = Math.Pow(p.X - o.X, 2) / Math.Pow(e.MajorAxis, 2) +
Math.Pow(p.Y - o.Y, 2) / Math.Pow(e.MinorAxis, 2);
if (t <= 1)
{
break;
}
}
else
{
if (Core.Util.CheckInnerPoint(shape.Vertices, new Vertex(p)))
{
break;
}
}
shape = null;
}
}
return(shape);
}