Beispiel #1
0
        public void UpdatePosition()
        {
            PointCollection points       = (Figure.Segments[0] as PolyLineSegment).Points;
            Point           prevPosition = points[PrevThumb.GetIndex()];
            Point           nextPosition = points[NextThumb.GetIndex()];

            Canvas.SetLeft(this, (prevPosition.X + nextPosition.X) * 0.5 * scale);
            Canvas.SetTop(this, (prevPosition.Y + nextPosition.Y) * 0.5 * scale);
        }
Beispiel #2
0
        public void InsertVertex(/*bool forceDrag = false*/)
        {
            if (PrevThumb != null && NextThumb != null)
            {
                int prevIndex = PrevThumb.GetIndex();
                int nextIndex = NextThumb.GetIndex();
                int newIndex  = nextIndex > prevIndex ? nextIndex : prevIndex + 1; //Correct handling of closed curves
                (Figure.Segments[0] as PolyLineSegment).Points.Insert(newIndex, new Point(Canvas.GetLeft(this) / Scale, Canvas.GetTop(this) / Scale));
                MoveThumb moveThumb = new MoveThumb(ParentCanvas, Figure, newIndex, Scale, ThumbList /*, IsDragging || forceDrag*/);
                ThumbList.Insert(newIndex, moveThumb);
                moveThumb.PrevThumb = PrevThumb;
                moveThumb.NextThumb = NextThumb;
                PrevThumb.NextThumb = moveThumb;
                NextThumb.PrevThumb = moveThumb;

                prevIndex = PrevThumb.GetIndex();
                nextIndex = NextThumb.GetIndex();

                //DependencyObject p = LogicalTreeHelper.GetParent(this);
                //MapCanvas parent = (MapCanvas)VisualTreeHelper.GetParent(this);
                //MapCanvas parent = ((MapCanvas)Parent);

                InsertThumb prevInsertThumb = new InsertThumb(ParentCanvas, Figure, prevIndex, newIndex, Scale, ThumbList);
                prevInsertThumb.PrevThumb = PrevThumb;
                prevInsertThumb.NextThumb = moveThumb;
                moveThumb.PrevInsertThumb = prevInsertThumb;
                PrevThumb.NextInsertThumb = prevInsertThumb;
                ParentCanvas.Children.Add(prevInsertThumb);

                InsertThumb nextInsertThumb = new InsertThumb(ParentCanvas, Figure, newIndex, nextIndex, Scale, ThumbList);
                nextInsertThumb.PrevThumb = moveThumb;
                nextInsertThumb.NextThumb = NextThumb;
                moveThumb.NextInsertThumb = nextInsertThumb;
                NextThumb.PrevInsertThumb = nextInsertThumb;
                ParentCanvas.Children.Add(nextInsertThumb);

                ParentCanvas.Children.Remove(this);
                ParentCanvas.Children.Add(moveThumb);
            }
        }
Beispiel #3
0
        public void DeleteVertex()
        {
            PointCollection points = (Figure.Segments[0] as PolyLineSegment).Points;

            if (points.Count > 2)
            {
                int index = GetIndex();
                points.RemoveAt(index);
                ThumbList.RemoveAt(index);

                if (index == 0)
                {
                    Figure.StartPoint = points[0];
                }

                //MapCanvas parent = ((MapCanvas)Parent);

                if (PrevThumb == null)
                {
                    NextThumb.PrevThumb       = null;
                    NextThumb.PrevInsertThumb = null;
                }
                else if (NextThumb == null)
                {
                    PrevThumb.NextThumb       = null;
                    PrevThumb.NextInsertThumb = null;
                }
                else
                {
                    PrevThumb.NextThumb = NextThumb;
                    NextThumb.PrevThumb = PrevThumb;

                    InsertThumb newInsertThumb = new InsertThumb(ParentCanvas, Figure, PrevThumb.GetIndex(), NextThumb.GetIndex(), Scale, ThumbList);
                    newInsertThumb.PrevThumb  = PrevThumb;
                    newInsertThumb.NextThumb  = NextThumb;
                    PrevThumb.NextInsertThumb = newInsertThumb;
                    NextThumb.PrevInsertThumb = newInsertThumb;
                    ParentCanvas.Children.Add(newInsertThumb);
                }

                ParentCanvas.Children.Remove(this);

                ParentCanvas.Children.Remove(PrevInsertThumb);
                ParentCanvas.Children.Remove(NextInsertThumb);
            }
        }