Class TransformStackElement

java.lang.Object
org.apache.batik.ext.awt.g2d.TransformStackElement
All Implemented Interfaces:
Cloneable
public abstract class TransformStackElement extends Object implements Cloneable
Contains a description of an elementary transform stack element, such as a rotate or translate. A transform stack element has a type and a value, which is an array of double values.
Version:
$Id$

  • Field Details

    • type

      private TransformType type
      Transform type

    • transformParameters

      private double[] transformParameters
      Value

  • Constructor Details

    • TransformStackElement

      protected TransformStackElement(TransformType type, double[] transformParameters)
      Parameters:
      type - transform type
      transformParameters - parameters for transform

  • Method Details

    • clone

      public Object clone()
      Overrides:
      clone in class Object
      Returns:
      an object which is a deep copy of this one

    • createTranslateElement

      public static TransformStackElement createTranslateElement(double tx, double ty)

    • createRotateElement

      public static TransformStackElement createRotateElement(double theta)

    • createScaleElement

      public static TransformStackElement createScaleElement(double scaleX, double scaleY)

    • createShearElement

      public static TransformStackElement createShearElement(double shearX, double shearY)

    • createGeneralTransformElement

      public static TransformStackElement createGeneralTransformElement(AffineTransform txf)

    • isIdentity

      abstract boolean isIdentity(double[] parameters)
      Implementation should determine if the parameter list represents an identity transform, for the instance transform type.

    • isIdentity

      public boolean isIdentity()
      Returns:
      true iff this transform is the identity transform

    • getTransformParameters

      public double[] getTransformParameters()
      Returns:
      array of values containing this transform element's parameters

    • getType

      public TransformType getType()
      Returns:
      this transform type

    • concatenate

      public boolean concatenate(TransformStackElement stackElement)

    • matrixMultiply

      private double[] matrixMultiply(double[] matrix1, double[] matrix2)
      Multiplies two 2x3 matrices of double precision values