private void ConvertTransverse()
{
double lat = 0.0, lon = 0.0, x = 0.0, y = 0.0, gamma = 0.0, k = 0.0;
double lon0 = Double.Parse(m_lon0TextBox.Text);
switch (m_functionComboBox.SelectedIndex)
{
case 0:
lat = Double.Parse(m_latitudeTextBox.Text);
lon = Double.Parse(m_longitudeTextBox.Text);
m_trans.Forward(lon0, lat, lon, out x, out y, out gamma, out k);
m_xTextBox.Text = x.ToString();
m_yTextBox.Text = y.ToString();
break;
case 1:
x = Double.Parse(m_xTextBox.Text);
y = Double.Parse(m_yTextBox.Text);
m_trans.Reverse(lon0, x, y, out lat, out lon, out gamma, out k);
m_latitudeTextBox.Text = lat.ToString();
m_longitudeTextBox.Text = lon.ToString();
break;
}
m_gammaTextBox.Text = gamma.ToString();
m_azimuthalScaleTextBox.Text = k.ToString();
}
public void TransverseMercatorProj6()
{
var tme = new TransverseMercatorExact(6.4e6, 1d / 150, Constants.UTM_k0);
var(lat, lon) = tme.Reverse(0, 3.3e6, 2.5e6, out var gamma, out var k);
Assert.AreEqual(19.80370996793, lat, 1e-11);
Assert.AreEqual(30.24919702282, lon, 1e-11);
Assert.AreEqual(11.214378172893, gamma, 1e-12);
Assert.AreEqual(1.137025775759, k, 1e-12);
var tm = new TransverseMercator(6.4e6, 1d / 150, Constants.UTM_k0);
(lat, lon) = tm.Reverse(0, 3.3e6, 2.5e6, out gamma, out k);
Assert.AreEqual(19.80370996793, lat, 1e-11);
Assert.AreEqual(30.24919702282, lon, 1e-11);
Assert.AreEqual(11.214378172893, gamma, 1e-12);
Assert.AreEqual(1.137025775759, k, 1e-12);
}
public void TransverseMercatorProj2_TestFixToBadScaleAtPoleWithTransverseMercatorExact()
{
var tme = new TransverseMercatorExact(Ellipsoid.WGS84, 1);
var(lat, lon) = tme.Reverse(0, 0, 10001965.7293127228, out var gamma, out var k);
Assert.AreEqual(90.0, lat, 0.01);
Assert.AreEqual(0, lon, 0.01);
Assert.AreEqual(0, gamma, 0.01);
Assert.AreEqual(1, k, 1e-5);
var tm = new TransverseMercator(Ellipsoid.WGS84, 1);
(lat, lon) = tm.Reverse(0, 0, 10001965.7293127228, out gamma, out k);
Assert.AreEqual(90.0, lat, 0.01);
Assert.AreEqual(180, Math.Abs(lon), 0.01);
Assert.AreEqual(180, Math.Abs(gamma), 0.01);
Assert.AreEqual(1, k, 1e-5);
}
// create an interpolated point between point a and b at time t
public point interpolatedPoint(point p1, point p2, long t)
{
double ts = point.codedTimeIntoSeconds(t);
double xx = p1.xm() + (ts - p1.tsec()) * (p2.xm() - p1.xm()) / (p2.tsec() - p1.tsec());
double yy = p1.ym() + (ts - p1.tsec()) * (p2.ym() - p1.ym()) / (p2.tsec() - p1.tsec());
double x, y;
if (p1.x > -360.0 && p1.x <= 360.0 && p1.y >= -90.0 && p1.y <= 90.0)
{
NETGeographicLib.TransverseMercator p = new TransverseMercator(a, f, k1);
p.Reverse(referenceMeridian, xx, yy, out y, out x);
}
else
{
x = xx;
y = yy;
}
point newpont = new point(t, x, y, true, referenceMeridian);
return(newpont);
}
static void Main(string[] args)
{
try {
TransverseMercator proj = new TransverseMercator(); // WGS84
double lon0 = -75; // Central meridian for UTM zone 18
{
// Sample forward calculation
double lat = 40.3, lon = -74.7; // Princeton, NJ
double x, y;
proj.Forward(lon0, lat, lon, out x, out y);
Console.WriteLine(String.Format("{0} {1}", x, y));
}
{
// Sample reverse calculation
double x = 25e3, y = 4461e3;
double lat, lon;
proj.Reverse(lon0, x, y, out lat, out lon);
Console.WriteLine(String.Format("{0} {1}", lat, lon));
}
}
catch (GeographicErr e) {
Console.WriteLine(String.Format("Caught exception: {0}", e.Message));
}
}
static void Main(string[] args)
{
try {
TransverseMercator proj = new TransverseMercator(); // WGS84
double lon0 = -75; // Central meridian for UTM zone 18
{
// Sample forward calculation
double lat = 40.3, lon = -74.7; // Princeton, NJ
double x, y;
proj.Forward(lon0, lat, lon, out x, out y);
Console.WriteLine(String.Format("{0} {1}", x, y));
}
{
// Sample reverse calculation
double x = 25e3, y = 4461e3;
double lat, lon;
proj.Reverse(lon0, x, y, out lat, out lon);
Console.WriteLine(String.Format("{0} {1}", lat, lon));
}
}
catch (GeographicErr e) {
Console.WriteLine(String.Format("Caught exception: {0}", e.Message));
}
}
private void OnValidate(object sender, EventArgs e)
{
try
{
const double DEG_TO_RAD = 3.1415926535897932384626433832795 / 180.0;
AlbersEqualArea a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.AzimuthalEqualAreaNorth);
a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.AzimuthalEqualAreaSouth);
double radius = a.EquatorialRadius;
double f = a.Flattening;
a = new AlbersEqualArea(radius, f, 60.0, 1.0);
a = new AlbersEqualArea(radius, f, 60.0, 70.0, 1.0);
a = new AlbersEqualArea(radius, f, Math.Sin(88.0 * DEG_TO_RAD), Math.Cos(88.0 * DEG_TO_RAD),
Math.Sin(89.0 * DEG_TO_RAD), Math.Cos(89.0 * DEG_TO_RAD), 1.0);
a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.CylindricalEqualArea);
double lon0 = 0.0, lat = 32.0, lon = -86.0, x, y, gamma, k, x1, y1;
a.Forward(lon0, lat, lon, out x, out y, out gamma, out k);
a.Forward(lon0, lat, lon, out x1, out y1);
if (x != x1 || y != y1)
{
throw new Exception("Error in AlbersEqualArea.Forward");
}
a.Reverse(lon0, x, y, out lat, out lon, out gamma, out k);
a.Reverse(lon0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
{
throw new Exception("Error in AlbersEqualArea.Reverse");
}
LambertConformalConic b = new LambertConformalConic(radius, f, 60.0, 1.0);
b = new LambertConformalConic(radius, f, 60.0, 65.0, 1.0);
b = new LambertConformalConic(radius, f, Math.Sin(88.0 * DEG_TO_RAD), Math.Cos(88.0 * DEG_TO_RAD),
Math.Sin(89.0 * DEG_TO_RAD), Math.Cos(89.0 * DEG_TO_RAD), 1.0);
b = new LambertConformalConic();
b.SetScale(60.0, 1.0);
b.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
b.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
{
throw new Exception("Error in LambertConformalConic.Forward");
}
b.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
b.Reverse(-87.0, x, y, out x1, out y1, out gamma, out k);
if (lat != x1 || lon != y1)
{
throw new Exception("Error in LambertConformalConic.Reverse");
}
TransverseMercator c = new TransverseMercator(radius, f, 1.0);
c = new TransverseMercator();
c.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
c.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
{
throw new Exception("Error in TransverseMercator.Forward");
}
c.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
c.Reverse(-87.0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
{
throw new Exception("Error in TransverseMercator.Reverse");
}
TransverseMercatorExact d = new TransverseMercatorExact(radius, f, 1.0, false);
d = new TransverseMercatorExact();
d.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
d.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
{
throw new Exception("Error in TransverseMercatorExact.Forward");
}
d.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
d.Reverse(-87.0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
{
throw new Exception("Error in TransverseMercatorExact.Reverse");
}
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
MessageBox.Show("No errors detected", "OK", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
private void OnValidate(object sender, EventArgs e)
{
try
{
const double DEG_TO_RAD = 3.1415926535897932384626433832795 / 180.0;
AlbersEqualArea a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.AzimuthalEqualAreaNorth);
a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.AzimuthalEqualAreaSouth);
double radius = a.MajorRadius;
double f = a.Flattening;
a = new AlbersEqualArea(radius, f, 60.0, 1.0);
a = new AlbersEqualArea(radius, f, 60.0, 70.0, 1.0);
a = new AlbersEqualArea(radius, f, Math.Sin(88.0 * DEG_TO_RAD), Math.Cos(88.0 * DEG_TO_RAD),
Math.Sin(89.0*DEG_TO_RAD), Math.Cos(89.0*DEG_TO_RAD), 1.0);
a = new AlbersEqualArea(AlbersEqualArea.StandardTypes.CylindricalEqualArea);
double lon0 = 0.0, lat = 32.0, lon = -86.0, x, y, gamma, k, x1, y1;
a.Forward(lon0, lat, lon, out x, out y, out gamma, out k);
a.Forward(lon0, lat, lon, out x1, out y1);
if (x != x1 || y != y1)
throw new Exception("Error in AlbersEqualArea.Forward");
a.Reverse(lon0, x, y, out lat, out lon, out gamma, out k);
a.Reverse(lon0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
throw new Exception("Error in AlbersEqualArea.Reverse");
LambertConformalConic b = new LambertConformalConic(radius, f, 60.0, 1.0);
b = new LambertConformalConic(radius, f, 60.0, 65.0, 1.0);
b = new LambertConformalConic(radius, f, Math.Sin(88.0 * DEG_TO_RAD), Math.Cos(88.0 * DEG_TO_RAD),
Math.Sin(89.0 * DEG_TO_RAD), Math.Cos(89.0 * DEG_TO_RAD), 1.0);
b = new LambertConformalConic();
b.SetScale(60.0, 1.0);
b.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
b.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
throw new Exception("Error in LambertConformalConic.Forward");
b.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
b.Reverse(-87.0, x, y, out x1, out y1, out gamma, out k);
if (lat != x1 || lon != y1)
throw new Exception("Error in LambertConformalConic.Reverse");
TransverseMercator c = new TransverseMercator(radius, f, 1.0);
c = new TransverseMercator();
c.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
c.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
throw new Exception("Error in TransverseMercator.Forward");
c.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
c.Reverse(-87.0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
throw new Exception("Error in TransverseMercator.Reverse");
TransverseMercatorExact d = new TransverseMercatorExact(radius, f, 1.0, false);
d = new TransverseMercatorExact();
d.Forward(-87.0, 32.0, -86.0, out x, out y, out gamma, out k);
d.Forward(-87.0, 32.0, -86.0, out x1, out y1);
if (x != x1 || y != y1)
throw new Exception("Error in TransverseMercatorExact.Forward");
d.Reverse(-87.0, x, y, out lat, out lon, out gamma, out k);
d.Reverse(-87.0, x, y, out x1, out y1);
if (lat != x1 || lon != y1)
throw new Exception("Error in TransverseMercatorExact.Reverse");
}
catch (Exception xcpt)
{
MessageBox.Show(xcpt.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
MessageBox.Show("No errors detected", "OK", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
