Package snap.geom

Class Path2DUtils

java.lang.Object

snap.geom.Path2DUtils

public class Path2DUtils
extends Object

Utility methods for Path2D.

Constructor Summary

Constructors

Constructor	Description
Path2DUtils()

Method Summary

Modifier and Type	Method	Description
static Path2D	addPathPointAtPoint(Shape aPath, Point aPoint)	Add a point to the curve by subdividing the path segment at the hit point.
static Rect	getControlPointBoundsWithSelPointIndex(Path2D aPath, int selPointIndex)	Returns the bounds for all the control points.
static int	handleAtPoint(Path2D aPath, Point aPoint, int selPointIndex)	Returns the handle index for a given point for given path.
static boolean	isPointOnPath(Path2D aPath, int pointIndex)	Returns true of the point at pointIndex is on the path, and false if it is on the convex hull.
static void	paintHandles(Path2D aPath, Painter aPntr, int selPointIndex)	Handles painting a path showing control point handles.
static Path2D	removePointAtIndexSmoothly(Shape aPath, int pointIndex)	Delete the selected control point and readjust shape bounds
static void	removeSegAtIndexSmoothly(Path2D aPath, int anIndex)	Removes the seg at given index, reconnecting the segs on either side of deleted seg.
static Path2D	setPointSmoothly(Shape aPath, int index, Point point)	Resets the point at the given index to the given point, while preserving path smoothness.

Methods inherited from class java.lang.Object

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

Constructor Details

Path2DUtils

public Path2DUtils()

Method Details

paintHandles

public static void paintHandles(Path2D aPath,
 Painter aPntr,
 int selPointIndex)

Handles painting a path showing control point handles.

setPointSmoothly

public static Path2D setPointSmoothly(Shape aPath,
 int index,
 Point point)

Resets the point at the given index to the given point, while preserving path smoothness.

addPathPointAtPoint

public static Path2D addPathPointAtPoint(Shape aPath,
 Point aPoint)

Add a point to the curve by subdividing the path segment at the hit point.

removePointAtIndexSmoothly

public static Path2D removePointAtIndexSmoothly(Shape aPath,
 int pointIndex)

Delete the selected control point and readjust shape bounds

removeSegAtIndexSmoothly

public static void removeSegAtIndexSmoothly(Path2D aPath,
 int anIndex)

Removes the seg at given index, reconnecting the segs on either side of deleted seg.

getControlPointBoundsWithSelPointIndex

public static Rect getControlPointBoundsWithSelPointIndex(Path2D aPath,
 int selPointIndex)

Returns the bounds for all the control points.

handleAtPoint

public static int handleAtPoint(Path2D aPath,
 Point aPoint,
 int selPointIndex)

Returns the handle index for a given point for given path. Only returns points that are on the path, except for the control points of selected point (if not -1)

isPointOnPath

public static boolean isPointOnPath(Path2D aPath,
 int pointIndex)

Returns true of the point at pointIndex is on the path, and false if it is on the convex hull.