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Rotated relative scale in AzimuthalEquidistantProjection

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ClemensFischer 2026-01-20 15:57:20 +01:00
parent 3fbfb0d5c1
commit 94e8edf18b
2 changed files with 4 additions and 2 deletions
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4
MapControl/Shared/AzimuthalEquidistantProjection.cs
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@ -37,7 +37,9 @@ namespace MapControl
k = c / Math.Sin(c); // p.195 (25-2) k = c / Math.Sin(c); // p.195 (25-2)
} }
return new Matrix(k, 0d, 0d, k, 0d, 0d); var scale = new Matrix(1d, 0d, 0d, k, 0d, 0d); // h == 1
scale.Rotate(-Math.Atan2(p.Y, p.X) * 180d / Math.PI);
return scale;
} }
public override Point? LocationToMap(double latitude, double longitude) public override Point? LocationToMap(double latitude, double longitude)

2
MapControl/Shared/OrthographicProjection.cs
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@ -31,7 +31,7 @@ namespace MapControl
var p = GetProjectedPoint(latitude, longitude); var p = GetProjectedPoint(latitude, longitude);
var h = p.CosC; // p.149 (20-5) var h = p.CosC; // p.149 (20-5)
var scale = new Matrix(h, 0d, 0d, 1d, 0d, 0d); var scale = new Matrix(h, 0d, 0d, 1d, 0d, 0d); // k == 1
scale.Rotate(-Math.Atan2(p.Y, p.X) * 180d / Math.PI); scale.Rotate(-Math.Atan2(p.Y, p.X) * 180d / Math.PI);
return scale; return scale;
} }