public class GeneralShapePair extends ShapePair
ShapePair
for general shapes
and combination types. This class can represent the combination and
perform basic operations like bounds, intersects and contains, but
it cannot supply a PathIterator for the result of the combination.
As a result the renderer will either have to be able to render the
combination of two shapes directly or perform some other geometry
computation of its own to achieve the subtraction or intersection.Modifier and Type | Field and Description |
---|---|
private int |
combinationType |
private Shape |
inner |
private Shape |
outer |
INCLUDES_I_NOT_O, INCLUDES_NEITHER, INCLUDES_O_AND_I, INCLUDES_O_NOT_I, TYPE_INTERSECT, TYPE_SUBTRACT
OUT_BOTTOM, OUT_LEFT, OUT_RIGHT, OUT_TOP, RECT_INTERSECTS
Constructor and Description |
---|
GeneralShapePair(Shape outer,
Shape inner,
int combinationType) |
Modifier and Type | Method and Description |
---|---|
boolean |
contains(float x,
float y)
Tests if the specified coordinates are inside the boundary of the
Shape . |
boolean |
contains(float x,
float y,
float w,
float h)
Tests if the interior of the
Shape entirely contains
the specified rectangular area. |
Shape |
copy()
Returns a new copy of this
Shape instance. |
RectBounds |
getBounds()
Note that there is no guarantee that the returned
RectBounds is the smallest bounding box that encloses
the Shape , only that the Shape lies
entirely within the indicated RectBounds . |
int |
getCombinationType()
Returns the method with which to combine the two shapes.
|
Shape |
getInnerShape()
Returns the inner
Shape . |
Shape |
getOuterShape()
Returns the outer
Shape . |
PathIterator |
getPathIterator(BaseTransform tx)
Returns an iterator object that iterates along the
Shape boundary and provides access to the geometry of the
Shape outline. |
PathIterator |
getPathIterator(BaseTransform tx,
float flatness)
Returns an iterator object that iterates along the
Shape
boundary and provides access to a flattened view of the
Shape outline geometry. |
boolean |
intersects(float x,
float y,
float w,
float h)
Tests if the interior of the
Shape intersects the
interior of a specified rectangular area. |
accumulate, accumulateCubic, accumulateCubic, accumulateQuad, contains, contains, intersects, intersectsLine, outcode, pointCrossingsForCubic, pointCrossingsForLine, pointCrossingsForPath, pointCrossingsForQuad, rectCrossingsForCubic, rectCrossingsForLine, rectCrossingsForPath, rectCrossingsForQuad
private final Shape outer
private final Shape inner
private final int combinationType
public final int getCombinationType()
ShapePair
TYPE_SUBTRACT
and TYPE_INTERSECT
are supported.getCombinationType
in class ShapePair
public final Shape getOuterShape()
ShapePair
Shape
.getOuterShape
in class ShapePair
Shape
.public final Shape getInnerShape()
ShapePair
Shape
.getInnerShape
in class ShapePair
Shape
.public Shape copy()
Shape
Shape
instance.public boolean contains(float x, float y)
Shape
Shape
.public boolean intersects(float x, float y, float w, float h)
Shape
Shape
intersects the
interior of a specified rectangular area.
The rectangular area is considered to intersect the Shape
if any point is contained in both the interior of the
Shape
and the specified rectangular area.
The Shape.intersects()
method allows a Shape
implementation to conservatively return true
when:
Shape
intersect, but
Shapes
this method might
return true
even though the rectangular area does not
intersect the Shape
.
The Area
class performs
more accurate computations of geometric intersection than most
Shape
objects and therefore can be used if a more precise
answer is required.intersects
in class Shape
x
- the X coordinate of the upper-left corner
of the specified rectangular areay
- the Y coordinate of the upper-left corner
of the specified rectangular areaw
- the width of the specified rectangular areah
- the height of the specified rectangular areatrue
if the interior of the Shape
and
the interior of the rectangular area intersect, or are
both highly likely to intersect and intersection calculations
would be too expensive to perform; false
otherwise.public boolean contains(float x, float y, float w, float h)
Shape
Shape
entirely contains
the specified rectangular area. All coordinates that lie inside
the rectangular area must lie within the Shape
for the
entire rectanglar area to be considered contained within the
Shape
.
The Shape.contains()
method allows a Shape
implementation to conservatively return false
when:
intersect
method returns true
and
Shape
entirely contains the rectangular area are
prohibitively expensive.
Shapes
this method might
return false
even though the Shape
contains
the rectangular area.
The Area
class performs
more accurate geometric computations than most
Shape
objects and therefore can be used if a more precise
answer is required.contains
in class Shape
x
- the X coordinate of the upper-left corner
of the specified rectangular areay
- the Y coordinate of the upper-left corner
of the specified rectangular areaw
- the width of the specified rectangular areah
- the height of the specified rectangular areatrue
if the interior of the Shape
entirely contains the specified rectangular area;
false
otherwise or, if the Shape
contains the rectangular area and the
intersects
method returns true
and the containment calculations would be too expensive to
perform.Shape.intersects(float, float, float, float)
public RectBounds getBounds()
Shape
RectBounds
is the smallest bounding box that encloses
the Shape
, only that the Shape
lies
entirely within the indicated RectBounds
.public PathIterator getPathIterator(BaseTransform tx)
Shape
Shape
boundary and provides access to the geometry of the
Shape
outline. If an optional BaseTransform
is specified, the coordinates returned in the iteration are
transformed accordingly.
Each call to this method returns a fresh PathIterator
object that traverses the geometry of the Shape
object
independently from any other PathIterator
objects in use
at the same time.
It is recommended, but not guaranteed, that objects
implementing the Shape
interface isolate iterations
that are in process from any changes that might occur to the original
object's geometry during such iterations.
getPathIterator
in class Shape
tx
- an optional BaseTransform
to be applied to the
coordinates as they are returned in the iteration, or
null
if untransformed coordinates are desiredPathIterator
object, which independently
traverses the geometry of the Shape
.public PathIterator getPathIterator(BaseTransform tx, float flatness)
Shape
Shape
boundary and provides access to a flattened view of the
Shape
outline geometry.
Only SEG_MOVETO, SEG_LINETO, and SEG_CLOSE point types are returned by the iterator.
If an optional BaseTransform
is specified,
the coordinates returned in the iteration are transformed
accordingly.
The amount of subdivision of the curved segments is controlled
by the flatness
parameter, which specifies the
maximum distance that any point on the unflattened transformed
curve can deviate from the returned flattened path segments.
Note that a limit on the accuracy of the flattened path might be
silently imposed, causing very small flattening parameters to be
treated as larger values. This limit, if there is one, is
defined by the particular implementation that is used.
Each call to this method returns a fresh PathIterator
object that traverses the Shape
object geometry
independently from any other PathIterator
objects in use at
the same time.
It is recommended, but not guaranteed, that objects
implementing the Shape
interface isolate iterations
that are in process from any changes that might occur to the original
object's geometry during such iterations.
getPathIterator
in class Shape
tx
- an optional BaseTransform
to be applied to the
coordinates as they are returned in the iteration, or
null
if untransformed coordinates are desiredflatness
- the maximum distance that the line segments used to
approximate the curved segments are allowed to deviate
from any point on the original curvePathIterator
that independently traverses
a flattened view of the geometry of the Shape
.