When we draw any shapes (rectangle, polygon, ellipse...etc), i notice they are all represented by PolygonShape, so the user can add/delete/move vertices. Is there any method to retrieve vertices of a shape so i can replicate those shapes in WPF? there is a method "RemoveVertex", but i can't fins a way to retrieve all vertices.
Ric,
Thanks for your post and questions.
Yes, as you said, we do not have a built-in API to retrieve all vertecis for any given shape, the reason is that we do not have a very common statndards to retrieve all those vertices. While, I am sure you could write your own logic to implement it. Following is some code you can take a reference if you want.
private Collection<Vertex> GetAllVertices(BaseShape baseShape)
{
Collection<Vertex> returningVertices = new Collection<Vertex>();
WellKnownType wellKnowType = baseShape.GetWellKnownType();
switch (wellKnowType)
{
case WellKnownType.Point:
PointShape targetShape1 = (PointShape)baseShape;
returningVertices.Add(new Vertex(targetShape1));
break;
case WellKnownType.Multipoint:
MultipointShape targetShape2 = (MultipointShape)baseShape;
foreach (PointShape pointShape in targetShape2.Points)
{
returningVertices.Add(new Vertex(pointShape));
}
break;
case WellKnownType.Line:
//logic for LineShape.
break;
case WellKnownType.Multiline:
//Logic for MultilineShape.
break;
case WellKnownType.Polygon:
//Logic for PolygonShape
break;
case WellKnownType.Multipolygon:
//Logic for MultiPolygon shape.
break;
default:
throw new ArgumentException("baseshape is not a valid shape");
}
return returningVertices;
}
Any more questions just feel free to let me know.
Thanks.
Yale