public void RemoveLayer(int i)
{
if (i < 0 || i >= this.GetLayerCount())
{
return;
}
this.LayerSet.RemoveAt(i);
// calculate extent dynamic(except i layer)
this.MapExtent = new MG_MapExtent();// Empty extent
for (int j = 0; j < this.GetLayerCount(); j++)
{
if (j != i)
{
if (this.MapExtent.Empty())
{
this.MapExtent = this.LayerSet.GetAt(j).Extent;
}
else
{
this.MapExtent = calculateExtent(this.MapExtent, this.LayerSet.GetAt(j).Extent);
}
}
}
}
public void InitMapView(Rectangle rect, MG_MapExtent me)
{// layerCount>0 => MapExtent!=Empty => MapView!=null
if (!this.MapExtent.Empty())
{
this.MapView = new MG_MapView(rect, me);
}
}
public MG_MapView(Rectangle rect, MG_MapExtent me)
{
this.Scale = 1.0;
this.CurrentWindow = rect;
this.CurrentExtent = me;
this.Calculate();
}
public MG_MapExtent(MG_MapExtent ext)
{
this.MinX = ext.MinX;
this.MinY = ext.MinY;
this.MaxX = ext.MaxX;
this.MaxY = ext.MaxY;
}
private MG_MapExtent calculateExtent(MG_MapExtent e1, MG_MapExtent e2)
{
MG_MapExtent ext = new MG_MapExtent();
ext.MinX = min(e1.MinX, e2.MinX);
ext.MinY = min(e1.MinY, e2.MinY);
ext.MaxX = max(e1.MaxX, e2.MaxX);
ext.MaxY = max(e1.MaxY, e2.MaxY);
return(ext);
}
public MG_Map()
{
mapCount++;
this.MapName = "Map_" + mapCount.ToString();
this.MapPath = null;
this.MapExtent = new MG_MapExtent();
this.LayerSet = new MG_LayerSet();
this.ZoomHistory = new MG_ZoomHistory();
this.CurrentZoomIndex = -1;
this.MapView = null;
}
public MG_GeometryType Type; // default NONE
public MG_Layer()
{
layerCount++;
this.LayerName = "Layer_" + layerCount.ToString();
this.LayerPath = null;
this.IsVisible = true;
this.FeatureSet = new MG_FeatureSet();
this.FieldSet = new MG_FieldSet(this.LayerName);
this.Extent = new MG_MapExtent();
this.Type = MG_GeometryType.NONE;
}
public void AddLayer(MG_Layer layer)
{
this.LayerSet.Add(layer);
// calculate extent dynamic
if (this.MapExtent.Empty())
{
this.MapExtent = layer.Extent;
}
else
{
this.MapExtent = calculateExtent(this.MapExtent, layer.Extent);
}
}
public void SetMapExtent(MG_MapExtent mapExtent)
{// zoom to layer : mapextent = layerextent
this.MapExtent = mapExtent;
}
public void Update(Rectangle rect, MG_MapExtent me)
{// FullExtent ZoomToLayer
this.CurrentWindow = rect;
this.CurrentExtent = me;
this.Calculate();
}
