private void SetPolylinePoints(D2DPolyline polyline, LocationCollection locations)
{
// materialize the list to skip managed-to-unmanaged marshaling on every iteration
var list = this.Owner.ConvertGeographicToPixelCoordinates(locations).ToList();
polyline.SetPoints(list);
}
private void RenderPolylines(bool closed)
{
// Shape geometry models already defined - the D2DCanvas will scale them.
if (this.Owner.D2DSurface.HasShapesForLayer(this.id))
{
return;
}
int minPoints = closed ? 3 : 2;
foreach (IMapShape shapeModel in this.ShapeModels)
{
var shape2DModel = shapeModel as MapShape2DModel;
if (shape2DModel == null)
{
continue;
}
if (shape2DModel.Locations.Count == 1)
{
if (shape2DModel.Locations[0].Count < minPoints)
{
continue;
}
var shape = new D2DPolyline();
shape.IsClosed = closed;
this.SetPolylinePoints(shape, shape2DModel.Locations[0]);
this.AddShape(shape, shape2DModel);
}
else
{
// Use ShapeContainer for more than 1 polyline per model
var container = new D2DShapeContainer();
var childShapes = new List <D2DShape>();
foreach (LocationCollection locations in shape2DModel.Locations)
{
if (locations.Count < minPoints)
{
continue;
}
var shape = new D2DPolyline();
shape.IsClosed = closed;
this.SetPolylinePoints(shape, locations);
childShapes.Add(shape);
}
container.SetShapes(childShapes);
this.AddShape(container, shape2DModel);
}
}
this.Owner.D2DSurface.SetShapesForLayer(this.shapes, new ShapeLayerParameters()
{
Id = this.id, ZIndex = this.zIndex, RenderPrecision = ShapeRenderPrecision.Double
});
}
