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## com.vividsolutions.jts.geom.util
Class AffineTransformationFactory

    java.lang.Object
      com.vividsolutions.jts.geom.util.AffineTransformationFactory

    public class AffineTransformationFactory

extends java.lang.Object

Supports creating `AffineTransformation`s defined by various kinds of inputs and transformation mapping rules.

Author:
  Martin Davis

Constructor Summary
`AffineTransformationFactory()`

Method Summary
`static AffineTransformation` | `createFromBaseLines(Coordinate src0, Coordinate src1, Coordinate dest0, Coordinate dest1)` Creates an AffineTransformation defined by a maping between two baselines.
`static AffineTransformation` | `createFromControlVectors(Coordinate[] src, Coordinate[] dest)` Creates an AffineTransformation defined by a set of control vectors.
`static AffineTransformation` | `createFromControlVectors(Coordinate src0, Coordinate dest0)` Creates an AffineTransformation defined by a single control vector.
`static AffineTransformation` | `createFromControlVectors(Coordinate src0, Coordinate src1, Coordinate dest0, Coordinate dest1)` Creates an AffineTransformation defined by a pair of control vectors.
`static AffineTransformation` | `createFromControlVectors(Coordinate src0, Coordinate src1, Coordinate src2, Coordinate dest0, Coordinate dest1, Coordinate dest2)` Creates a tranformation from a set of three control vectors.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### AffineTransformationFactory

    public AffineTransformationFactory()

Method Detail

### createFromControlVectors

    public static AffineTransformation createFromControlVectors(Coordinate src0,
                                                                Coordinate src1,
                                                                Coordinate src2,
                                                                Coordinate dest0,
                                                                Coordinate dest1,
                                                                Coordinate dest2)

  Creates a tranformation from a set of three control vectors. A control vector consists of a source point and a destination point, which is the image of the source point under the desired transformation. Three control vectors allows defining a fully general affine transformation.

  Parameters:
    `src0` -
    `src1` -
    `src2` -
    `dest0` -
    `dest1` -
    `dest2` -
  Returns:
    the computed transformation

### createFromControlVectors

    public static AffineTransformation createFromControlVectors(Coordinate src0,
                                                                Coordinate src1,
                                                                Coordinate dest0,
                                                                Coordinate dest1)

  Creates an AffineTransformation defined by a pair of control vectors. A control vector consists of a source point and a destination point, which is the image of the source point under the desired transformation. The computed transformation is a combination of one or more of a uniform scale, a rotation, and a translation (i.e. there is no shear component and no reflection)

  Parameters:
    `src0` -
    `src1` -
    `dest0` -
    `dest1` -
  Returns:
    the computed transformation

### createFromControlVectors

    public static AffineTransformation createFromControlVectors(Coordinate src0,
                                                                Coordinate dest0)

  Creates an AffineTransformation defined by a single control vector. A control vector consists of a source point and a destination point, which is the image of the source point under the desired transformation. This produces a translation.

  Parameters:
    `src0` - the start point of the control vector
    `dest0` - the end point of the control vector
  Returns:
    the computed transformation

### createFromControlVectors

    public static AffineTransformation createFromControlVectors(Coordinate[] src,
                                                                Coordinate[] dest)

  Creates an AffineTransformation defined by a set of control vectors. Between one and three vectors must be supplied.

  Parameters:
    `src` - the source points of the vectors
    `dest` - the destination points of the vectors
  Returns:
    the computed transformation
  Throws:
    `java.lang.IllegalArgumentException` - if the control vector arrays are too short, long or of different lengths

### createFromBaseLines

    public static AffineTransformation createFromBaseLines(Coordinate src0,
                                                           Coordinate src1,
                                                           Coordinate dest0,
                                                           Coordinate dest1)

  Creates an AffineTransformation defined by a maping between two baselines. The computed transformation consists of:
  - a translation from the start point of the source baseline to the start point of the destination baseline,
  - a rotation through the angle between the baselines about the destination start point,
  - and a scaling equal to the ratio of the baseline lengths.
  If the source baseline has zero length, an identity transformation is returned.

  Parameters:
    `src0` - the start point of the source baseline
    `src1` - the end point of the source baseline
    `dest0` - the start point of the destination baseline
    `dest1` - the end point of the destination baseline
  Returns:
    the computed transformation

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