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 and 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 Detail

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.