ClemensFischer/XAML-Map-Control
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Version 4.16.0. Improved MapProjection.

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This commit is contained in:
ClemensF 2019-12-12 19:23:41 +01:00
parent 60e0093785
commit 12566506f8
14 changed files with 136 additions and 121 deletions
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42
MapProjections/Shared/GeoApiProjection.cs
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@ -3,6 +3,7 @@
// Licensed under the Microsoft Public License (Ms-PL)
using System;
using System.Globalization;
#if !WINDOWS_UWP
using System.Windows;
#endif
@ -20,6 +21,10 @@ namespace MapControl.Projections
public class GeoApiProjection : MapProjection
{
private ICoordinateSystem coordinateSystem;
private bool isNormalCylindrical;
private bool isWebMercator;
private double trueScale;
private string bboxFormat;
public IMathTransform LocationToPointTransform { get; private set; }
public IMathTransform PointToLocationTransform { get; private set; }
@ -63,21 +68,21 @@ namespace MapControl.Projections
var falseNorthing = projection.GetParameter("false_northing");
var scaleFactor = projection.GetParameter("scale_factor");
HasLatLonBoundingBox = false;
IsNormalCylindrical =
isNormalCylindrical =
centralMeridian != null && centralMeridian.Value == 0d &&
centralParallel != null && centralParallel.Value == 0d &&
(falseEasting == null || falseEasting.Value == 0d) &&
(falseNorthing == null || falseNorthing.Value == 0d);
IsWebMercator = CrsId == "EPSG:3857" || CrsId == "EPSG:900913";
TrueScale = (scaleFactor != null ? scaleFactor.Value : 1d) * Wgs84MetersPerDegree;
isWebMercator = CrsId == "EPSG:3857" || CrsId == "EPSG:900913";
trueScale = (scaleFactor != null ? scaleFactor.Value : 1d) * Wgs84MetersPerDegree;
bboxFormat = "{0},{1},{2},{3}";
}
else
{
HasLatLonBoundingBox = true;
IsNormalCylindrical = true;
IsWebMercator = false;
TrueScale = 1d;
isNormalCylindrical = true;
isWebMercator = false;
trueScale = 1d;
bboxFormat = "{1},{0},{3},{2}";
}
}
}
@ -93,6 +98,21 @@ namespace MapControl.Projections
set { CoordinateSystem = new CoordinateSystemFactory().CreateFromWkt(value); }
}
public override bool IsNormalCylindrical
{
get { return isNormalCylindrical; }
}
public override bool IsWebMercator
{
get { return isWebMercator; }
}
public override double TrueScale
{
get { return trueScale; }
}
public override Point LocationToPoint(Location location)
{
if (LocationToPointTransform == null)
@ -116,5 +136,11 @@ namespace MapControl.Projections
return new Location(coordinate.Y, coordinate.X);
}
public override string GetBboxValue(Rect rect)
{
return string.Format(CultureInfo.InvariantCulture,
bboxFormat, rect.X, rect.Y, (rect.X + rect.Width), (rect.Y + rect.Height));
}
}
}