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Added AzimuthalProjection.EarthRadius

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ClemensFischer 2026-01-16 20:22:45 +01:00
parent 60152fef93
commit d825b50062
9 changed files with 63 additions and 60 deletions
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40
MapControl/Shared/TransverseMercatorProjection.cs
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@ -87,15 +87,15 @@ namespace MapControl
// η'
var eta_ = Atanh(Math.Sin(dLambda) / Math.Sqrt(1d + t * t));
// ξ
var xi = xi_
+ a1 * Math.Sin(2d * xi_) * Math.Cosh(2d * eta_)
+ a2 * Math.Sin(4d * xi_) * Math.Cosh(4d * eta_)
+ a3 * Math.Sin(6d * xi_) * Math.Cosh(6d * eta_);
var xi = xi_ +
a1 * Math.Sin(2d * xi_) * Math.Cosh(2d * eta_) +
a2 * Math.Sin(4d * xi_) * Math.Cosh(4d * eta_) +
a3 * Math.Sin(6d * xi_) * Math.Cosh(6d * eta_);
// η
var eta = eta_
+ a1 * Math.Cos(2d * xi_) * Math.Sinh(2d * eta_)
+ a2 * Math.Cos(4d * xi_) * Math.Sinh(4d * eta_)
+ a3 * Math.Cos(6d * xi_) * Math.Sinh(6d * eta_);
var eta = eta_ +
a1 * Math.Cos(2d * xi_) * Math.Sinh(2d * eta_) +
a2 * Math.Cos(4d * xi_) * Math.Sinh(4d * eta_) +
a3 * Math.Cos(6d * xi_) * Math.Sinh(6d * eta_);
return new Point(
k0A * eta + FalseEasting,
@ -111,22 +111,22 @@ namespace MapControl
// η
var eta = (x - FalseEasting) / k0A;
// ξ'
var xi_ = xi
- b1 * Math.Sin(2d * xi) * Math.Cosh(2d * eta)
- b2 * Math.Sin(4d * xi) * Math.Cosh(4d * eta)
- b3 * Math.Sin(6d * xi) * Math.Cosh(6d * eta);
var xi_ = xi -
b1 * Math.Sin(2d * xi) * Math.Cosh(2d * eta) -
b2 * Math.Sin(4d * xi) * Math.Cosh(4d * eta) -
b3 * Math.Sin(6d * xi) * Math.Cosh(6d * eta);
// η'
var eta_ = eta
- b1 * Math.Cos(2d * xi) * Math.Sinh(2d * eta)
- b2 * Math.Cos(4d * xi) * Math.Sinh(4d * eta)
- b3 * Math.Cos(6d * xi) * Math.Sinh(6d * eta);
var eta_ = eta -
b1 * Math.Cos(2d * xi) * Math.Sinh(2d * eta) -
b2 * Math.Cos(4d * xi) * Math.Sinh(4d * eta) -
b3 * Math.Cos(6d * xi) * Math.Sinh(6d * eta);
// χ
var chi = Math.Asin(Math.Sin(xi_) / Math.Cosh(eta_));
// φ
var phi = chi
+ d1 * Math.Sin(2d * chi)
+ d2 * Math.Sin(4d * chi)
+ d3 * Math.Sin(6d * chi);
var phi = chi +
d1 * Math.Sin(2d * chi) +
d2 * Math.Sin(4d * chi) +
d3 * Math.Sin(6d * chi);
// λ - λ0
var dLambda = Math.Atan(Math.Sinh(eta_) / Math.Cos(xi_));