本文整理汇总了C#中Coordinate.IsEmpty方法的典型用法代码示例。如果您正苦于以下问题:C# Coordinate.IsEmpty方法的具体用法?C# Coordinate.IsEmpty怎么用?C# Coordinate.IsEmpty使用的例子?那么, 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Coordinate
的用法示例。
在下文中一共展示了Coordinate.IsEmpty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: WorldtoMap
/// <summary>
/// Transforms from world coordinate system (WCS) to image coordinates
/// NOTE: This method DOES NOT take the MapTransform property into account (use <see cref="Map.WorldToImage(GeoAPI.Geometries.Coordinate,bool)"/> instead)
/// </summary>
/// <param name="p">Point in WCS</param>
/// <param name="map">Map reference</param>
/// <returns>Point in image coordinates</returns>
public static PointF WorldtoMap(Coordinate p, Map map)
{
//if (map.MapTransform != null && !map.MapTransform.IsIdentity)
// map.MapTransform.TransformPoints(new System.Drawing.PointF[] { p });
if (p.IsEmpty())
return PointF.Empty;
var result = new PointF();
var height = (map.Zoom * map.Size.Height) / map.Size.Width;
var left = map.Center.X - map.Zoom * 0.5;
var top = map.Center.Y + height * 0.5 * map.PixelAspectRatio;
result.X = (float)((p.X - left) / map.PixelWidth);
result.Y = (float)((top - p.Y) / map.PixelHeight);
if (double.IsNaN(result.X) || double.IsNaN(result.Y))
result = PointF.Empty;
return result;
}