internal void SetElementReference(FeatureElement element)
{
if (element == null)
{
this.ElementReference = null;
}
else
{
this.ElementReference = new WeakReference(element);
Canvas.SetZIndex(element, this.zIndex);
if (this.geometry != null)
{
Rectangle2D biggerBounds = new Rectangle2D(this.geometry.Bounds.Left, this.geometry.Bounds.Bottom, this.geometry.Bounds.Right, this.geometry.Bounds.Top);
//拓宽GeoLine的外接矩形
if (this.Layer != null && (!double.IsNaN(this.Layer.Resolution)) && this.Style !=null && this.Style is LineStyle)
{
LineStyle lineStyle = this.Style as LineStyle;
if (!double.IsNaN(lineStyle.StrokeThickness))
{
Double dInflate = this.Layer.Resolution * lineStyle.StrokeThickness;
biggerBounds.Inflate(dInflate, dInflate);
this.dInflate = dInflate;
}
}
SuperMap.Web.Mapping.LayerContainer.SetBounds(element, biggerBounds);
}
}
}
private void ArrangeFeature(FeatureElement elm, Rectangle2D clipBox)
{
if (elm.Visibility != Visibility.Collapsed)
{
Rectangle2D b = GetBounds(elm);
if (!b.IsEmpty)
{
double x = (b.Left - this.Origin.X) / this.Resolution;
double y = (this.Origin.Y - b.Top) / this.Resolution;
if (((b.Width > 0.0) || (b.Height > 0.0)) && (elm.PathGeometry != null))
{
double ratio = elm.Resolution / this.Resolution;
this.SetClip(elm, clipBox);
if (elm.ClippedGeometry != null)
{
b = elm.ClippedGeometry.Bounds;
if (b.IsEmpty)
{
return;
}
x = (b.Left - this.Origin.X) / this.Resolution;
y = (this.Origin.Y - b.Top) / this.Resolution;
}
if (elm.PathGeometry.Transform is ScaleTransform)
{
(elm.PathGeometry.Transform as ScaleTransform).ScaleX = (elm.PathGeometry.Transform as ScaleTransform).ScaleY = ratio;
}
else
{
elm.PathGeometry.Transform = new ScaleTransform { ScaleX = ratio, ScaleY = ratio };
}
double num4 = ((b.Width / elm.Resolution) * ratio) + 10.0;
double num5 = ((b.Height / elm.Resolution) * ratio) + 10.0;//这也已经加了10.0
num4 = Math.Min(32000.0, num4);
num5 = Math.Min(32000.0, num5);
elm.Arrange(new Rect(x, y, num4, num5));
}
else
{
elm.Arrange(new Rect(new Point(x, y), elm.DesiredSize));
}
}
}
}
//int最大值32765的一半16382.5,最大支持16383
private void SetClip(FeatureElement fe, Rectangle2D clipBox)
{
Rectangle2D bounds = fe.Geometry.Bounds;
if ((bounds.IsEmpty) || ((bounds.Width / this.Resolution) < 16383.5))
{
if (fe.ClippedGeometry != null)
{
fe.ClearClip();
}
}
else if (((fe.ClipBox.IsEmpty) || !clipBox.Within(fe.ClipBox)) || ((fe.ClipBox.Width / this.Resolution) >= 16383.5))
{
if (fe.Geometry is GeoRegion)
{
fe.SetClip(new GeoRegionClip(clipBox).Clip(fe.Geometry as GeoRegion), clipBox);
}
else if (fe.Geometry is GeoLine)
{
fe.SetClip(new GeoLineClip(clipBox).Clip(fe.Geometry as GeoLine), clipBox);
}
}
}
internal void ResetGeometryTransform(FeatureElement elm)
{
if (((elm.OriginX != this.Origin.X) || (elm.OriginY != this.Origin.Y)) || (elm.Resolution != this.Resolution))
{
elm.InvalidatePath(this.Resolution, this.OriginX, this.OriginY);
}
}