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java.lang.Objectes.prodevelop.gvsig.mobile.fmap.core.GeneralPathX
The GeneralPathX
class represents a geometric path
constructed from straight lines, and quadratic and cubic
(Bézier) curves. It can contain multiple subpaths.
The winding rule specifies how the interior of a path is determined. There are two types of winding rules: EVEN_ODD and NON_ZERO.
An EVEN_ODD winding rule means that enclosed regions of the path alternate between interior and exterior areas as traversed from the outside of the path towards a point inside the region.
A NON_ZERO winding rule means that if a ray is drawn in any direction from a given point to infinity and the places where the path intersects the ray are examined, the point is inside of the path if and only if the number of times that the path crosses the ray from left to right does not equal the number of times that the path crosses the ray from right to left.
Field Summary | |
static int |
WIND_EVEN_ODD
An even-odd winding rule for determining the interior of a path. |
static int |
WIND_NON_ZERO
A non-zero winding rule for determining the interior of a path. |
Constructor Summary | |
GeneralPathX()
Constructs a new GeneralPathX object.
|
|
GeneralPathX(int rule)
Constructs a new GeneralPathX object with the specified
winding rule to control operations that require the interior of the
path to be defined. |
|
GeneralPathX(int rule,
int initialCapacity)
Constructs a new GeneralPathX object with the specified
winding rule and the specified initial capacity to store path
coordinates. |
|
GeneralPathX(java.awt.geom.PathIterator pit,
boolean needs_linearize)
|
Method Summary | |
void |
append(java.awt.geom.PathIterator pi,
boolean connect)
Appends the geometry of the specified PathIterator object
to the path, possibly connecting the new geometry to the existing
path segments with a line segment.
|
void |
append(java.awt.Shape s,
boolean connect)
Appends the geometry of the specified Shape object to the
path, possibly connecting the new geometry to the existing path
segments with a line segment.
|
java.lang.Object |
clone()
Creates a new object of the same class as this object. |
void |
closePath()
Closes the current subpath by drawing a straight line back to the coordinates of the last moveTo . |
boolean |
contains(double x,
double y)
|
boolean |
contains(double x,
double y,
double w,
double h)
|
boolean |
contains(java.awt.geom.Point2D p)
|
boolean |
contains(java.awt.geom.Rectangle2D r)
|
java.awt.Shape |
createTransformedShape(java.awt.geom.AffineTransform at)
Returns a new transformed Shape . |
void |
curveTo(double x1,
double y1,
double x2,
double y2,
double x3,
double y3)
Adds a curved segment, defined by three new points, to the path by drawing a Bézier curve that intersects both the current coordinates and the coordinates (x3, y3), using the specified points (x1, y1) and (x2, y2) as Bézier control points. |
boolean |
ensureOrientation(boolean bCCW)
Use this function to ensure you get real polygons or holes En JTS, con bCCW = false obtienes un polígono exterior. |
void |
flip()
Convertimos el path a puntos y luego le damos la vuelta. |
java.awt.Rectangle |
getBounds()
Return the bounding box of the path. |
java.awt.geom.Rectangle2D |
getBounds2D()
Returns the bounding box of the path. |
java.awt.geom.Point2D |
getCurrentPoint()
Returns the coordinates most recently added to the end of the path as a Point2D object. |
java.awt.geom.PathIterator |
getPathIterator(java.awt.geom.AffineTransform at)
Returns a PathIterator object that iterates along the
boundary of this Shape and provides access to the
geometry of the outline of this Shape .
|
java.awt.geom.PathIterator |
getPathIterator(java.awt.geom.AffineTransform at,
double flatness)
Returns a PathIterator object that iterates along the
boundary of the flattened Shape and provides access to the
geometry of the outline of the Shape .
|
int |
getWindingRule()
Returns the fill style winding rule. |
boolean |
intersects(double x,
double y,
double w,
double h)
|
boolean |
intersects(java.awt.geom.Rectangle2D r)
|
boolean |
isCCW()
|
boolean |
isClosed()
|
static java.awt.geom.PathIterator |
linearize(java.awt.geom.PathIterator arcpathiter)
|
void |
lineTo(double x,
double y)
Adds a point to the path by drawing a straight line from the current coordinates to the new specified coordinates. |
void |
moveTo(double x,
double y)
Adds a point to the path by moving to the specified coordinates. |
void |
quadTo(double x1,
double y1,
double x2,
double y2)
Adds a curved segment, defined by two new points, to the path by drawing a Quadratic curve that intersects both the current coordinates and the coordinates (x2, y2), using the specified point (x1, y1) as a quadratic parametric control point. |
void |
reProject(ICoordTrans ct)
|
void |
reset()
Resets the path to empty. |
void |
setWindingRule(int rule)
Sets the winding rule for this path to the specified value. |
void |
transform(java.awt.geom.AffineTransform at)
Transforms the geometry of this path using the specified AffineTransform .
|
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public static final int WIND_EVEN_ODD
public static final int WIND_NON_ZERO
Constructor Detail |
public GeneralPathX()
GeneralPathX
object.
If an operation performed on this path requires the
interior of the path to be defined then the default NON_ZERO
winding rule is used.
WIND_NON_ZERO
public GeneralPathX(int rule)
GeneralPathX
object with the specified
winding rule to control operations that require the interior of the
path to be defined.
rule
- the winding ruleWIND_EVEN_ODD
,
WIND_NON_ZERO
public GeneralPathX(int rule, int initialCapacity)
GeneralPathX
object with the specified
winding rule and the specified initial capacity to store path
coordinates. This number is an initial guess as to how many path
segments are in the path, but the storage is expanded
as needed to store whatever path segments are added to this path.
rule
- the winding ruleinitialCapacity
- the estimate for the number of path segments
in the pathWIND_EVEN_ODD
,
WIND_NON_ZERO
public GeneralPathX(java.awt.geom.PathIterator pit, boolean needs_linearize)
Method Detail |
public static java.awt.geom.PathIterator linearize(java.awt.geom.PathIterator arcpathiter)
public void moveTo(double x, double y)
x
- the specified coordinatesy
- the specified coordinatespublic void lineTo(double x, double y)
x
- the specified coordinatesy
- the specified coordinatespublic void quadTo(double x1, double y1, double x2, double y2)
x1
- the coordinates of the first quadratic control
pointy1
- the coordinates of the first quadratic control
pointx2
- the coordinates of the final endpointy2
- the coordinates of the final endpointpublic void curveTo(double x1, double y1, double x2, double y2, double x3, double y3)
x1
- the coordinates of the first Béezier
control pointy1
- the coordinates of the first Béezier
control pointx2
- the coordinates of the second Bézier
control pointy2
- the coordinates of the second Bézier
control pointx3
- the coordinates of the final endpointy3
- the coordinates of the final endpointpublic void closePath()
moveTo
. If the path is already
closed then this method has no effect.
public boolean isClosed()
public void append(java.awt.Shape s, boolean connect)
Shape
object to the
path, possibly connecting the new geometry to the existing path
segments with a line segment.
If the connect
parameter is true
and the
path is not empty then any initial moveTo
in the
geometry of the appended Shape
is turned into a lineTo
segment.
If the destination coordinates of such a connecting lineTo
segment match the ending coordinates of a currently open
subpath then the segment is omitted as superfluous.
The winding rule of the specified Shape
is ignored
and the appended geometry is governed by the winding
rule specified for this path.
s
- the Shape
whose geometry is appended
to this pathconnect
- a boolean to control whether or not to turn an
initial moveTo
segment into a lineTo
segment to connect the new geometry to the existing pathpublic void append(java.awt.geom.PathIterator pi, boolean connect)
PathIterator
object
to the path, possibly connecting the new geometry to the existing
path segments with a line segment.
If the connect
parameter is true
and the
path is not empty then any initial moveTo
in the
geometry of the appended Shape
is turned into a
lineTo
segment.
If the destination coordinates of such a connecting lineTo
segment match the ending coordinates of a currently open
subpath then the segment is omitted as superfluous.
The winding rule of the specified Shape
is ignored
and the appended geometry is governed by the winding
rule specified for this path.
pi
- the PathIterator
whose geometry is appended to
this pathconnect
- a boolean to control whether or not to turn an
initial moveTo
segment into a lineTo
segment
to connect the new geometry to the existing pathpublic int getWindingRule()
WIND_EVEN_ODD
,
WIND_NON_ZERO
,
setWindingRule(int)
public void setWindingRule(int rule)
rule
- an integer representing the specified
winding rule
IllegalArgumentException
- if
rule
is not either
WIND_EVEN_ODD
or
WIND_NON_ZERO
WIND_EVEN_ODD
,
WIND_NON_ZERO
,
getWindingRule()
public java.awt.geom.Point2D getCurrentPoint()
Point2D
object.
Point2D
object containing the ending
coordinates of the path or null
if there are no points
in the path.public void reset()
public void transform(java.awt.geom.AffineTransform at)
AffineTransform
.
The geometry is transformed in place, which permanently changes the
boundary defined by this object.
at
- the AffineTransform
used to transform the areapublic void reProject(ICoordTrans ct)
public java.awt.Shape createTransformedShape(java.awt.geom.AffineTransform at)
Shape
.
at
- the AffineTransform
used to transform a
new Shape
.
Shape
, transformed with the specified
AffineTransform
.public java.awt.Rectangle getBounds()
getBounds
in interface java.awt.Shape
Rectangle
object that
bounds the current path.public java.awt.geom.Rectangle2D getBounds2D()
getBounds2D
in interface java.awt.Shape
Rectangle2D
object that
bounds the current path.public java.awt.geom.PathIterator getPathIterator(java.awt.geom.AffineTransform at)
PathIterator
object that iterates along the
boundary of this Shape
and provides access to the
geometry of the outline of this Shape
.
The iterator for this class is not multi-threaded safe,
which means that this GeneralPathX
class does not
guarantee that modifications to the geometry of this
GeneralPathX
object do not affect any iterations of
that geometry that are already in process.
getPathIterator
in interface java.awt.Shape
at
- an AffineTransform
PathIterator
that iterates along the
boundary of this Shape
and provides access to the
geometry of this Shape
's outlinepublic java.awt.geom.PathIterator getPathIterator(java.awt.geom.AffineTransform at, double flatness)
PathIterator
object that iterates along the
boundary of the flattened Shape
and provides access to the
geometry of the outline of the Shape
.
The iterator for this class is not multi-threaded safe,
which means that this GeneralPathX
class does not
guarantee that modifications to the geometry of this
GeneralPathX
object do not affect any iterations of
that geometry that are already in process.
getPathIterator
in interface java.awt.Shape
at
- an AffineTransform
flatness
- the maximum distance that the line segments used to
approximate the curved segments are allowed to deviate
from any point on the original curve
PathIterator
that iterates along the flattened
Shape
boundary.public java.lang.Object clone()
java.lang.OutOfMemoryError
- if there is not enough memory.Cloneable
public void flip()
public boolean ensureOrientation(boolean bCCW)
bCCW
- true if you want the GeneralPath in CCW order
public boolean isCCW()
public boolean contains(double x, double y)
contains
in interface java.awt.Shape
public boolean contains(double x, double y, double w, double h)
contains
in interface java.awt.Shape
public boolean intersects(double x, double y, double w, double h)
intersects
in interface java.awt.Shape
public boolean contains(java.awt.geom.Point2D p)
contains
in interface java.awt.Shape
public boolean contains(java.awt.geom.Rectangle2D r)
contains
in interface java.awt.Shape
public boolean intersects(java.awt.geom.Rectangle2D r)
intersects
in interface java.awt.Shape
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