本文整理汇总了C#中DotSpatial.Topology.Envelope.ExpandBy方法的典型用法代码示例。如果您正苦于以下问题：C# Envelope.ExpandBy方法的具体用法？C# Envelope.ExpandBy怎么用？C# Envelope.ExpandBy使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DotSpatial.Topology.Envelope的用法示例。
在下文中一共展示了Envelope.ExpandBy方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: OnMouseUp
/// <summary>
/// Handles the Mouse Up situation
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(GeoMouseArgs e)
{
if (Map == null) Map = e.Map;
Stopwatch sw = new Stopwatch();
sw.Start();
if (_isDragging == false) return;
_currentPoint = e.Location;
_isDragging = false;
//Map.Invalidate(); // Get rid of the selection box
//Application.DoEvents();
IEnvelope env = new Envelope(_geoStartPoint.X, e.GeographicLocation.X,
_geoStartPoint.Y, e.GeographicLocation.Y);
IEnvelope tolerant = env;
if (_startPoint.X == e.X && _startPoint.Y == e.Y)
{
// click selection doesn't work quite right without some tiny tolerance.
double tol = Map.MapFrame.ViewExtents.Width / 10000;
env.ExpandBy(tol);
}
if (Math.Abs(_startPoint.X - e.X) < 8 && Math.Abs(_startPoint.Y - e.Y) < 8)
{
Coordinate c1 = e.Map.PixelToProj(new Point(e.X - 4, e.Y - 4));
Coordinate c2 = e.Map.PixelToProj(new Point(e.X + 4, e.Y + 4));
tolerant = new Envelope(c1, c2);
}
former = null;
foreach (var l in Map.MapFrame.GetAllLayers())
{
if (l.IsSelected)
{
former = l;
l.IsSelected = false;
}
}
if (former == null && Map.MapFrame.IsSelected)
{
former = Map.MapFrame;
}
Map.MapFrame.IsSelected = true;
Map.MapFrame.SuspendEvents();
HandleSelection(tolerant, env);
Map.MapFrame.IsSelected = false;
if (former != null)
{
former.IsSelected = true;
}
Map.MapFrame.ResumeEvents();
// Force an invalidate to clear the dotted lines, even if we haven't changed anything.
e.Map.Invalidate();
//e.Map.MapFrame.Initialize();
sw.Stop();
Debug.WriteLine("Initialize: " + sw.ElapsedMilliseconds);
base.OnMouseUp(e);
Map.IsBusy = false;
}