Class TwirlFilter

All Implemented Interfaces:
BufferedImageOp, Cloneable

public class TwirlFilter extends TransformFilter
A Filter which distorts an image by twisting it from the centre out. The twisting is centred at the centre of the image and extends out to the smallest of the width and height. Pixels outside this radius are unaffected.
  • Constructor Details

    • TwirlFilter

      public TwirlFilter()
      Construct a TwirlFilter with no distortion.
  • Method Details

    • setAngle

      public void setAngle(float angle)
      Set the angle of twirl in radians. 0 means no distortion.
      Parameters:
      angle - the angle of twirl. This is the angle by which pixels at the nearest edge of the image will move.
      See Also:
    • getAngle

      public float getAngle()
      Get the angle of twist.
      Returns:
      the angle in radians.
      See Also:
    • setCentreX

      public void setCentreX(float centreX)
      Set the centre of the effect in the X direction as a proportion of the image size.
      Parameters:
      centreX - the center
      See Also:
    • getCentreX

      public float getCentreX()
      Get the centre of the effect in the X direction as a proportion of the image size.
      Returns:
      the center
      See Also:
    • setCentreY

      public void setCentreY(float centreY)
      Set the centre of the effect in the Y direction as a proportion of the image size.
      Parameters:
      centreY - the center
      See Also:
    • getCentreY

      public float getCentreY()
      Get the centre of the effect in the Y direction as a proportion of the image size.
      Returns:
      the center
      See Also:
    • setCentre

      public void setCentre(Point2D centre)
      Set the centre of the effect as a proportion of the image size.
      Parameters:
      centre - the center
      See Also:
    • getCentre

      public Point2D getCentre()
      Get the centre of the effect as a proportion of the image size.
      Returns:
      the center
      See Also:
    • setRadius

      public void setRadius(float radius)
      Set the radius of the effect.
      Parameters:
      radius - the radius
      See Also:
    • getRadius

      public float getRadius()
      Get the radius of the effect.
      Returns:
      the radius
      See Also:
    • filter

      public BufferedImage filter(BufferedImage src, BufferedImage dst)
      Specified by:
      filter in interface BufferedImageOp
      Overrides:
      filter in class TransformFilter
    • transformInverse

      protected void transformInverse(int x, int y, float[] out)
      Description copied from class: TransformFilter
      Inverse transform a point. This method needs to be overriden by all subclasses.
      Specified by:
      transformInverse in class TransformFilter
      Parameters:
      x - the X position of the pixel in the output image
      y - the Y position of the pixel in the output image
      out - the position of the pixel in the input image
    • toString

      public String toString()
      Overrides:
      toString in class Object