Package org.eclipse.nebula.visualization.widgets.util

Class PointsUtil

java.lang.Object
org.eclipse.nebula.visualization.widgets.util.PointsUtil
public final class PointsUtil
extends java.lang.Object
This class can be used to manimuplate points.

  • Method Summary

    Modifier and Type Method Description
    static org.eclipse.draw2d.geometry.PrecisionPoint doRotate​(org.eclipse.draw2d.geometry.PrecisionPoint point, double angle, org.eclipse.draw2d.geometry.PrecisionPoint rotationPoint)
    Rotates the given Point with the given angle relative to the rotation point.
    static org.eclipse.draw2d.geometry.Point flipPointHorizontally​(org.eclipse.draw2d.geometry.Point point, int center)
    Flip point horizontally from center point.
    static org.eclipse.draw2d.geometry.PointList flipPointsHorizontally​(org.eclipse.draw2d.geometry.PointList points)
    Flip points horizontally.
    static org.eclipse.draw2d.geometry.PointList flipPointsHorizontally​(org.eclipse.draw2d.geometry.PointList points, int centerX)
    Flip points horizontally.
    static org.eclipse.draw2d.geometry.PointList flipPointsVertically​(org.eclipse.draw2d.geometry.PointList points)
    Flip points vertically.
    static org.eclipse.draw2d.geometry.PointList flipPointsVertically​(org.eclipse.draw2d.geometry.PointList points, int centerY)
    Flip points vertically.
    static org.eclipse.draw2d.geometry.Point flipPointVertically​(org.eclipse.draw2d.geometry.Point point, int center)
    Flip point vertically from center point.
    static org.eclipse.draw2d.geometry.PrecisionPoint rotate​(org.eclipse.draw2d.geometry.Point point, double angle, org.eclipse.draw2d.geometry.Point rotationPoint)
    Rotates the given Point with the given angle relative to the rotation point.
    static org.eclipse.draw2d.geometry.PointList rotatePoints​(org.eclipse.draw2d.geometry.PointList points, double angle)
    Rotates all points.
    static org.eclipse.draw2d.geometry.PointList rotatePoints​(org.eclipse.draw2d.geometry.PointList points, double angle, org.eclipse.draw2d.geometry.Point center)
    Rotates all points.
    static void scalePoints​(org.eclipse.draw2d.geometry.PointList points, double widthRatio, double heightRatio)
    Scale the geometry size of a pointlist.
    static org.eclipse.draw2d.geometry.PointList scalePointsBySize​(org.eclipse.draw2d.geometry.PointList points, int width, int height)
    Scale the bound size of a point list.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • rotate

      public static org.eclipse.draw2d.geometry.PrecisionPoint rotate​(org.eclipse.draw2d.geometry.Point point, double angle, org.eclipse.draw2d.geometry.Point rotationPoint)
      Rotates the given Point with the given angle relative to the rotation point. Converts the given point to a PrecisionPoint and calls doRotate(PrecisionPoint, double, PrecisionPoint).
      Parameters:
      point - The Point to rotate
      angle - The angle to rotate (in Degrees)
      rotationPoint - The rotation point
      Returns:
      The rotated Point

    • doRotate

      public static org.eclipse.draw2d.geometry.PrecisionPoint doRotate​(org.eclipse.draw2d.geometry.PrecisionPoint point, double angle, org.eclipse.draw2d.geometry.PrecisionPoint rotationPoint)
      Rotates the given Point with the given angle relative to the rotation point.
      Parameters:
      point - The Point to rotate
      angle - The angle to rotate (in Degrees)
      rotationPoint - The rotation point
      Returns:
      The rotated Point

    • rotatePoints

      public static final org.eclipse.draw2d.geometry.PointList rotatePoints​(org.eclipse.draw2d.geometry.PointList points, double angle)
      Rotates all points.
      Parameters:
      points - The PoinList, which points should be rotated
      angle - The angle to rotate
      Returns:
      The rotated PointList

    • rotatePoints

      public static final org.eclipse.draw2d.geometry.PointList rotatePoints​(org.eclipse.draw2d.geometry.PointList points, double angle, org.eclipse.draw2d.geometry.Point center)
      Rotates all points.
      Parameters:
      points - The PoinList, which points should be rotated
      angle - The angle to rotate
      Returns:
      The rotated PointList

    • flipPointHorizontally

      public static final org.eclipse.draw2d.geometry.Point flipPointHorizontally​(org.eclipse.draw2d.geometry.Point point, int center)
      Flip point horizontally from center point.
      Parameters:
      point - the point to be flipped.
      center - the center point.
      Returns:
      the point after flipping.

    • flipPointVertically

      public static final org.eclipse.draw2d.geometry.Point flipPointVertically​(org.eclipse.draw2d.geometry.Point point, int center)
      Flip point vertically from center point.
      Parameters:
      point - the point to be flipped.
      center - the center point.
      Returns:
      the point after flipping.

    • flipPointsHorizontally

      public static final org.eclipse.draw2d.geometry.PointList flipPointsHorizontally​(org.eclipse.draw2d.geometry.PointList points)
      Flip points horizontally.
      Parameters:
      points - the points to be flipped.
      Returns:
      the flipped points.

    • flipPointsHorizontally

      public static final org.eclipse.draw2d.geometry.PointList flipPointsHorizontally​(org.eclipse.draw2d.geometry.PointList points, int centerX)
      Flip points horizontally.
      Parameters:
      points - the points to be flipped.
      centerX - the center X position
      Returns:
      the flipped points.

    • flipPointsVertically

      public static final org.eclipse.draw2d.geometry.PointList flipPointsVertically​(org.eclipse.draw2d.geometry.PointList points)
      Flip points vertically.
      Parameters:
      points - the points to be flipped.
      Returns:
      the flipped points.

    • flipPointsVertically

      public static final org.eclipse.draw2d.geometry.PointList flipPointsVertically​(org.eclipse.draw2d.geometry.PointList points, int centerY)
      Flip points vertically.
      Parameters:
      points - the points to be flipped.
      centerY - the center Y position.
      Returns:
      the flipped points.

    • scalePoints

      public static final void scalePoints​(org.eclipse.draw2d.geometry.PointList points, double widthRatio, double heightRatio)
      Scale the geometry size of a pointlist.
      Parameters:
      points - points to be scaled.
      widthRatio - width scale ratio.
      heightRatio - height scale ratio.

    • scalePointsBySize

      public static org.eclipse.draw2d.geometry.PointList scalePointsBySize​(org.eclipse.draw2d.geometry.PointList points, int width, int height)
      Scale the bound size of a point list.
      Parameters:
      points - the points to be scaled.
      width - the new width.
      height - the new height
      Returns:
      the points after scaled. If no scale is needed, return the input points.