///<summary>
/// Checks that a transformation produces the expected result
///</summary>
/// <param name="x">the input pt x</param>
/// <param name="y">the input pt y</param>
/// <param name="trans">the transformation</param>
/// <param name="xp">the expected output x</param>
/// <param name="yp">the expected output y</param>
static void CheckTransformation(double x, double y, AffineTransformation trans, double xp, double yp)
{
var p = new Coordinate(x, y);
var p2 = new Coordinate();
trans.Transform(p, p2);
Assert.AreEqual(xp, p2.X, .00005);
Assert.AreEqual(yp, p2.Y, .00005);
// if the transformation is invertible, test the inverse
try
{
var invTrans = trans.GetInverse();
var pInv = new Coordinate();
invTrans.Transform(p2, pInv);
Assert.AreEqual(x, pInv.X, .00005);
Assert.AreEqual(y, pInv.Y, .00005);
double det = trans.Determinant;
double detInv = invTrans.Determinant;
Assert.AreEqual(det, 1.0 / detInv, .00005);
}
catch (NoninvertibleTransformationException)
{
}
}
public AffineTransform(AffineTransformation affineTransformation)
{
_affineTransformation = affineTransformation;
_inverseAffineTransformation = affineTransformation.GetInverse();
_transformation = affineTransformation;
DimSource = DimTarget = 2;
//WKT = "NTS AffineTransformation";
}
public AffineTransform(AffineTransformation affineTransformation)
{
_affineTransformation = affineTransformation;
_inverseAffineTransformation = affineTransformation.GetInverse();
_transformation = affineTransformation;
DimSource = DimTarget = 2;
//WKT = "NTS AffineTransformation";
}
static void CheckTransformation(String geomStr)
{
Geometry geom = (Geometry)WktReader.Read(geomStr);
AffineTransformation trans = AffineTransformation
.RotationInstance(Math.PI / 2);
AffineTransformation inv = trans.GetInverse();
Geometry transGeom = (Geometry)geom.Clone();
transGeom.Apply(trans);
// System.out.println(transGeom);
transGeom.Apply(inv);
// check if transformed geometry is equal to original
bool isEqual = geom.EqualsExact(transGeom, 0.0005);
Assert.IsTrue(isEqual);
}
///<summary>
/// Checks that a transformation produces the expected result
///</summary>
/// <param name="x">the input pt x</param>
/// <param name="y">the input pt y</param>
/// <param name="trans">the transformation</param>
/// <param name="xp">the expected output x</param>
/// <param name="yp">the expected output y</param>
static void CheckTransformation(double x, double y, AffineTransformation trans, double xp, double yp)
{
Coordinate p = new Coordinate(x, y);
Coordinate p2 = new Coordinate();
trans.Transform(p, p2);
Assert.AreEqual(xp, p2.X, .00005);
Assert.AreEqual(yp, p2.Y, .00005);
// if the transformation is invertible, test the inverse
try
{
AffineTransformation invTrans = trans.GetInverse();
Coordinate pInv = new Coordinate();
invTrans.Transform(p2, pInv);
Assert.AreEqual(x, pInv.X, .00005);
Assert.AreEqual(y, pInv.Y, .00005);
double det = trans.Determinant;
double detInv = invTrans.Determinant;
Assert.AreEqual(det, 1.0 / detInv, .00005);
}
catch (NoninvertibleTransformationException)
{
}
}
