 All Superinterfaces:
MathTransform
Transforms twodimensional coordinate points.
CoordinateOperation.getMathTransform()
may
returns instance of this interface when source and destination coordinate systems are both two
dimensional. MathTransform2D
extends MathTransform
by adding some methods for
easier interoperability with Java2D.
If the transformation is affine, then MathTransform
shall be an
immutable instance of AffineTransform
.
 Since:
 1.0
 Departure from OGC/ISO abstract specification:
Departure for closer integration with the Java environment
This interface is not part of OGC specification. It has been added in GeoAPI for close integration with the Java2D library. The API defined in this interface matches thejava.awt.geom.AffineTransform
API.

Method Summary
Modifier and TypeMethodDescriptioncreateTransformedShape
(Shape shape) Transforms the specified shape.derivative
(Point2D point) Gets the derivative of this transform at a point.inverse()
Creates the inverse transform of this object.Transforms the specifiedptSrc
and stores the result inptDst
.Methods inherited from interface MathTransform
derivative, getSourceDimensions, getTargetDimensions, isIdentity, toWKT, transform, transform, transform, transform, transform

Method Details

transform
Transforms the specifiedptSrc
and stores the result inptDst
. IfptDst
isnull
, a newPoint2D
object is allocated and then the result of the transformation is stored in this object. In either case,ptDst
, which contains the transformed point, is returned for convenience. IfptSrc
andptDst
are the same object, the input point is correctly overwritten with the transformed point. Parameters:
ptSrc
 the coordinate point to be transformed.ptDst
 the coordinate point that stores the result of transformingptSrc
, ornull
if a new point shall be created. Returns:
 the coordinate point after transforming
ptSrc
and storing the result inptDst
or in a new point ifptDst
was null.  Throws:
TransformException
 if the point cannot be transformed.

createTransformedShape
Transforms the specified shape. This method may replace straight lines by quadratic curves when applicable. It may also do the opposite (replace curves by straight lines). The returned shape doesn't need to have the same number of points than the original shape. Parameters:
shape
 The Shape to transform. Returns:
 The transformed shape. Some implementations may returns
shape
unmodified if this transform is identity.  Throws:
TransformException
 if a transform failed.

derivative
Gets the derivative of this transform at a point. The derivative is the matrix of the nontranslating portion of the approximate affine map at the point. Parameters:
point
 The coordinate point where to evaluate the derivative. Null value is accepted only if the derivative is the same everywhere. For example affine transform accept null value since they produces identical derivative no matter the coordinate value. But most map projection will requires a nonnull value. Returns:
 The derivative at the specified point as a 2×2 matrix. This method never returns an internal object: changing the matrix will not change the state of this math transform.
 Throws:
NullPointerException
 if the derivative dependents on coordinate andpoint
isnull
.TransformException
 if the derivative cannot be evaluated at the specified point.

inverse
Creates the inverse transform of this object. Specified by:
inverse
in interfaceMathTransform
 Returns:
 The inverse transform.
 Throws:
NoninvertibleTransformException
 if the transform cannot be inverted. Since:
 2.2
