public List <Path> GetPaths(Transform toScreen, BoundingBox mapBoundingBox, Action mouseDownAction = null)
{
if (_symbol == null)
{
return(new List <Path>());
}
var pathGeometry = GetPathGeometry(toScreen);
var firstScreen = toScreen.Transform(mapBoundingBox.TopLeft.AsWpfPoint());
var secondScreen = toScreen.Transform(mapBoundingBox.BottomRight.AsWpfPoint());
var screenLimit = new BoundingBox(firstScreen.X, firstScreen.Y, secondScreen.X, secondScreen.Y);
var size = toScreen.TransformBounds(Extent.AsRect());
var size2 = pathGeometry.Bounds;
var distance = Math.Max(size2.Width, size2.Height);
var unitSize = Math.Max(_symbol.Bounds.Height, _symbol.Bounds.Width);
var tolerance = distance / unitSize;
List <Path> result = new List <Path>();
var bound = _symbol.Bounds;
for (int i = 0; i <= tolerance; i++)
{
double fraction = (i) / tolerance;
System.Windows.Point location, direction;
pathGeometry.GetPointAtFractionLength(fraction, out location, out direction);
if (!screenLimit.Intersects(new Point(location.X, location.Y)))
{
continue;
}
Path tempPath = new Path()
{
Fill = this.VisualParameters.Fill, Data = _symbol
};
if (CanEdit && mouseDownAction != null)
{
tempPath.MouseLeftButtonDown += (sender, e) =>
{
if (e.ClickCount > 1)
{
mouseDownAction();
}
};
}
Matrix matrix = Matrix.Identity;
var rotation = Math.Atan2(direction.Y, direction.X) * 180 / Math.PI;
matrix.RotateAt(rotation, (bound.Width + bound.X) / 2.0, (bound.Height + bound.Y) / 2.0);
matrix.Translate(location.X - bound.Width / 2.0 - bound.X / 2.0, location.Y - bound.Height / 2.0 - bound.Y / 2.0);
TransformGroup group = new TransformGroup();
group.Children.Add(new MatrixTransform(matrix));
tempPath.RenderTransform = group;
//tempPath.Tag = new LayerTag(-1) { IsTiled = false, LayerType = LayerType.AnimatingItem };
result.Add(tempPath);
}
return(result);
}
