Class AbstractMathTransform2D.Inverse
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- All Implemented Interfaces:
Parameterized
,LenientComparable
,MathTransform
,MathTransform2D
- Enclosing class:
- AbstractMathTransform2D
protected abstract static class AbstractMathTransform2D.Inverse extends AbstractMathTransform.Inverse implements MathTransform2D
Base class for implementation of inverse math transforms. This inner class is the inverse of the enclosingAbstractMathTransform2D
.SerializationThis object may or may not be serializable, at implementation choices. Most Apache SIS implementations are serializable, but the serialized objects are not guaranteed to be compatible with future SIS versions. Serialization should be used only for short term storage or RMI between applications running the same SIS version.- Since:
- 0.5
Defined in the
sis-referencing
module
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Nested Class Summary
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Nested classes/interfaces inherited from class AbstractMathTransform
AbstractMathTransform.Inverse
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Constructor Summary
Constructors Modifier Constructor Description protected
Inverse()
Constructs an inverse math transform.
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description Shape
createTransformedShape(Shape shape)
Transforms the specified shape.Matrix
derivative(Point2D point)
Gets the derivative of this transform at a point.abstract MathTransform2D
inverse()
Returns the inverse of this math transform.Point2D
transform(Point2D ptSrc, Point2D ptDst)
Transforms the specifiedptSrc
and stores the result inptDst
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Methods inherited from class AbstractMathTransform.Inverse
computeHashCode, derivative, equals, formatTo, getSourceDimensions, getTargetDimensions, isIdentity
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Methods inherited from class AbstractMathTransform
equals, getContextualParameters, getParameterDescriptors, getParameterValues, hashCode, transform, transform, transform, transform, transform, transform, tryConcatenate
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Methods inherited from class FormattableObject
print, toString, toString, toWKT
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Methods inherited from class Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface MathTransform
derivative, getSourceDimensions, getTargetDimensions, isIdentity, toWKT, transform, transform, transform, transform, transform
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Method Detail
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inverse
public abstract MathTransform2D inverse()
Returns the inverse of this math transform. The returned transform should be the enclosing math transform.- Specified by:
inverse
in interfaceMathTransform
- Specified by:
inverse
in interfaceMathTransform2D
- Specified by:
inverse
in classAbstractMathTransform.Inverse
- Returns:
- the inverse of this transform.
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transform
public Point2D transform(Point2D ptSrc, Point2D ptDst) throws TransformException
Transforms the specifiedptSrc
and stores the result inptDst
. The default implementation invokesAbstractMathTransform.transform(double[], int, double[], int, boolean)
using a temporary array of doubles.- Specified by:
transform
in interfaceMathTransform2D
- 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 can not be transformed.- See Also:
MathTransform2D.transform(Point2D, Point2D)
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createTransformedShape
public Shape createTransformedShape(Shape shape) throws TransformException
Transforms the specified shape. The default implementation computes quadratic curves using three points for each line segment in the shape. The returned object is often aPath2D
, but may also be aLine2D
or aQuadCurve2D
if such simplification is possible.- Specified by:
createTransformedShape
in interfaceMathTransform2D
- Parameters:
shape
- shape to transform.- Returns:
- transformed shape, or
shape
if this transform is the identity transform. - Throws:
TransformException
- if a transform failed.
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derivative
public Matrix derivative(Point2D point) throws TransformException
Gets the derivative of this transform at a point. The default implementation performs the following steps:- Copy the coordinate in a temporary array and pass that array to the
AbstractMathTransform.transform(double[], int, double[], int, boolean)
method, with thederivate
boolean argument set totrue
. - If the later method returned a non-null matrix, returns that matrix.
Otherwise throws
TransformException
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- Specified by:
derivative
in interfaceMathTransform2D
- Parameters:
point
- the coordinate point where to evaluate the derivative.- Returns:
- the derivative at the specified point as a 2×2 matrix.
- Throws:
TransformException
- if the derivative can not be evaluated at the specified point.
- Copy the coordinate in a temporary array and pass that array to the
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