Path
public
class
Path
extends Object
java.lang.Object | |
↳ | android.graphics.Path |
The Path class encapsulates compound (multiple contour) geometric paths consisting of straight line segments, quadratic curves, and cubic curves. It can be drawn with canvas.drawPath(path, paint), either filled or stroked (based on the paint's Style), or it can be used for clipping or to draw text on a path.
Summary
Public constructors | |
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Path()
Create an empty path |
|
Path(Path src)
Create a new path, copying the contents from the src path. |
Public methods | |
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void
|
addArc(RectF oval, float startAngle, float sweepAngle)
Add the specified arc to the path as a new contour. |
void
|
addArc(float left, float top, float right, float bottom, float startAngle, float sweepAngle)
Add the specified arc to the path as a new contour. |
void
|
addCircle(float x, float y, float radius, Path.Direction dir)
Add a closed circle contour to the path |
void
|
addOval(RectF oval, Path.Direction dir)
Add a closed oval contour to the path |
void
|
addOval(float left, float top, float right, float bottom, Path.Direction dir)
Add a closed oval contour to the path |
void
|
addPath(Path src, Matrix matrix)
Add a copy of src to the path, transformed by matrix |
void
|
addPath(Path src)
Add a copy of src to the path |
void
|
addPath(Path src, float dx, float dy)
Add a copy of src to the path, offset by (dx,dy) |
void
|
addRect(RectF rect, Path.Direction dir)
Add a closed rectangle contour to the path |
void
|
addRect(float left, float top, float right, float bottom, Path.Direction dir)
Add a closed rectangle contour to the path |
void
|
addRoundRect(float left, float top, float right, float bottom, float rx, float ry, Path.Direction dir)
Add a closed round-rectangle contour to the path |
void
|
addRoundRect(float left, float top, float right, float bottom, float[] radii, Path.Direction dir)
Add a closed round-rectangle contour to the path. |
void
|
addRoundRect(RectF rect, float rx, float ry, Path.Direction dir)
Add a closed round-rectangle contour to the path |
void
|
addRoundRect(RectF rect, float[] radii, Path.Direction dir)
Add a closed round-rectangle contour to the path. |
float[]
|
approximate(float acceptableError)
Approximate the |
void
|
arcTo(RectF oval, float startAngle, float sweepAngle, boolean forceMoveTo)
Append the specified arc to the path as a new contour. |
void
|
arcTo(float left, float top, float right, float bottom, float startAngle, float sweepAngle, boolean forceMoveTo)
Append the specified arc to the path as a new contour. |
void
|
arcTo(RectF oval, float startAngle, float sweepAngle)
Append the specified arc to the path as a new contour. |
void
|
close()
Close the current contour. |
void
|
computeBounds(RectF bounds, boolean exact)
This method was deprecated in API level 35. use computeBounds(RectF) instead |
void
|
conicTo(float x1, float y1, float x2, float y2, float weight)
Add a quadratic bezier from the last point, approaching control point
(x1,y1), and ending at (x2,y2), weighted by |
void
|
cubicTo(float x1, float y1, float x2, float y2, float x3, float y3)
Add a cubic bezier from the last point, approaching control points (x1,y1) and (x2,y2), and ending at (x3,y3). |
Path.FillType
|
getFillType()
Return the path's fill type. |
int
|
getGenerationId()
Returns the generation ID of this path. |
PathIterator
|
getPathIterator()
Returns an iterator over the segments of this path. |
void
|
incReserve(int extraPtCount)
Hint to the path to prepare for adding more points. |
boolean
|
interpolate(Path otherPath, float t, Path interpolatedPath)
This method will linearly interpolate from this path to |
boolean
|
isConvex()
This method was deprecated in API level 30. This method is not reliable. The way convexity is computed may change from release to release, and convexity could change based on a matrix as well. This method was useful when non-convex Paths were unable to be used in certain contexts, but that is no longer the case. |
boolean
|
isEmpty()
Returns true if the path is empty (contains no lines or curves) |
boolean
|
isInterpolatable(Path otherPath)
Two paths can be interpolated, by calling |
boolean
|
isInverseFillType()
Returns true if the filltype is one of the INVERSE variants |
boolean
|
isRect(RectF rect)
Returns true if the path specifies a rectangle. |
void
|
lineTo(float x, float y)
Add a line from the last point to the specified point (x,y). |
void
|
moveTo(float x, float y)
Set the beginning of the next contour to the point (x,y). |
void
|
offset(float dx, float dy, Path dst)
Offset the path by (dx,dy) |
void
|
offset(float dx, float dy)
Offset the path by (dx,dy) |
boolean
|
op(Path path1, Path path2, Path.Op op)
Set this path to the result of applying the Op to the two specified paths. |
boolean
|
op(Path path, Path.Op op)
Set this path to the result of applying the Op to this path and the specified path. |
void
|
quadTo(float x1, float y1, float x2, float y2)
Add a quadratic bezier from the last point, approaching control point (x1,y1), and ending at (x2,y2). |
void
|
rConicTo(float dx1, float dy1, float dx2, float dy2, float weight)
Same as conicTo, but the coordinates are considered relative to the last point on this contour. |
void
|
rCubicTo(float x1, float y1, float x2, float y2, float x3, float y3)
Same as cubicTo, but the coordinates are considered relative to the current point on this contour. |
void
|
rLineTo(float dx, float dy)
Same as lineTo, but the coordinates are considered relative to the last point on this contour. |
void
|
rMoveTo(float dx, float dy)
Set the beginning of the next contour relative to the last point on the previous contour. |
void
|
rQuadTo(float dx1, float dy1, float dx2, float dy2)
Same as quadTo, but the coordinates are considered relative to the last point on this contour. |
void
|
reset()
Clear any lines and curves from the path, making it empty. |
void
|
rewind()
Rewinds the path: clears any lines and curves from the path but keeps the internal data structure for faster reuse. |
void
|
set(Path src)
Replace the contents of this with the contents of src. |
void
|
setFillType(Path.FillType ft)
Set the path's fill type. |
void
|
setLastPoint(float dx, float dy)
Sets the last point of the path. |
void
|
toggleInverseFillType()
Toggles the INVERSE state of the filltype |
void
|
transform(Matrix matrix)
Transform the points in this path by matrix. |
void
|
transform(Matrix matrix, Path dst)
Transform the points in this path by matrix, and write the answer into dst. |
Inherited methods | |
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Public constructors
Path
public Path (Path src)
Create a new path, copying the contents from the src path.
Parameters | |
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src |
Path : The path to copy from when initializing the new path
This value may be null . |
Public methods
addArc
public void addArc (RectF oval, float startAngle, float sweepAngle)
Add the specified arc to the path as a new contour.
Parameters | |
---|---|
oval |
RectF : The bounds of oval defining the shape and size of the arc
This value cannot be null . |
startAngle |
float : Starting angle (in degrees) where the arc begins |
sweepAngle |
float : Sweep angle (in degrees) measured clockwise |
addArc
public void addArc (float left, float top, float right, float bottom, float startAngle, float sweepAngle)
Add the specified arc to the path as a new contour.
Parameters | |
---|---|
left |
float |
top |
float |
right |
float |
bottom |
float |
startAngle |
float : Starting angle (in degrees) where the arc begins |
sweepAngle |
float : Sweep angle (in degrees) measured clockwise |
addCircle
public void addCircle (float x, float y, float radius, Path.Direction dir)
Add a closed circle contour to the path
Parameters | |
---|---|
x |
float : The x-coordinate of the center of a circle to add to the path |
y |
float : The y-coordinate of the center of a circle to add to the path |
radius |
float : The radius of a circle to add to the path |
dir |
Path.Direction : The direction to wind the circle's contour
This value cannot be null . |
addOval
public void addOval (RectF oval, Path.Direction dir)
Add a closed oval contour to the path
Parameters | |
---|---|
oval |
RectF : The bounds of the oval to add as a closed contour to the path
This value cannot be null . |
dir |
Path.Direction : The direction to wind the oval's contour
This value cannot be null . |
addOval
public void addOval (float left, float top, float right, float bottom, Path.Direction dir)
Add a closed oval contour to the path
Parameters | |
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left |
float |
top |
float |
right |
float |
bottom |
float |
dir |
Path.Direction : The direction to wind the oval's contour
This value cannot be null . |
addPath
public void addPath (Path src, Matrix matrix)
Add a copy of src to the path, transformed by matrix
Parameters | |
---|---|
src |
Path : The path to add as a new contour
This value cannot be null . |
matrix |
Matrix : This value cannot be null . |
addPath
public void addPath (Path src)
Add a copy of src to the path
Parameters | |
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src |
Path : The path that is appended to the current path
This value cannot be null . |
addPath
public void addPath (Path src, float dx, float dy)
Add a copy of src to the path, offset by (dx,dy)
Parameters | |
---|---|
src |
Path : The path to add as a new contour
This value cannot be null . |
dx |
float : The amount to translate the path in X as it is added |
dy |
float |
addRect
public void addRect (RectF rect, Path.Direction dir)
Add a closed rectangle contour to the path
Parameters | |
---|---|
rect |
RectF : The rectangle to add as a closed contour to the path
This value cannot be null . |
dir |
Path.Direction : The direction to wind the rectangle's contour
This value cannot be null . |
addRect
public void addRect (float left, float top, float right, float bottom, Path.Direction dir)
Add a closed rectangle contour to the path
Parameters | |
---|---|
left |
float : The left side of a rectangle to add to the path |
top |
float : The top of a rectangle to add to the path |
right |
float : The right side of a rectangle to add to the path |
bottom |
float : The bottom of a rectangle to add to the path |
dir |
Path.Direction : The direction to wind the rectangle's contour
This value cannot be null . |
addRoundRect
public void addRoundRect (float left, float top, float right, float bottom, float rx, float ry, Path.Direction dir)
Add a closed round-rectangle contour to the path
Parameters | |
---|---|
left |
float |
top |
float |
right |
float |
bottom |
float |
rx |
float : The x-radius of the rounded corners on the round-rectangle |
ry |
float : The y-radius of the rounded corners on the round-rectangle |
dir |
Path.Direction : The direction to wind the round-rectangle's contour
This value cannot be null . |
addRoundRect
public void addRoundRect (float left, float top, float right, float bottom, float[] radii, Path.Direction dir)
Add a closed round-rectangle contour to the path. Each corner receives two radius values [X, Y]. The corners are ordered top-left, top-right, bottom-right, bottom-left
Parameters | |
---|---|
left |
float |
top |
float |
right |
float |
bottom |
float |
radii |
float : Array of 8 values, 4 pairs of [X,Y] radii
This value cannot be null . |
dir |
Path.Direction : The direction to wind the round-rectangle's contour
This value cannot be null . |
addRoundRect
public void addRoundRect (RectF rect, float rx, float ry, Path.Direction dir)
Add a closed round-rectangle contour to the path
Parameters | |
---|---|
rect |
RectF : The bounds of a round-rectangle to add to the path
This value cannot be null . |
rx |
float : The x-radius of the rounded corners on the round-rectangle |
ry |
float : The y-radius of the rounded corners on the round-rectangle |
dir |
Path.Direction : The direction to wind the round-rectangle's contour
This value cannot be null . |
addRoundRect
public void addRoundRect (RectF rect, float[] radii, Path.Direction dir)
Add a closed round-rectangle contour to the path. Each corner receives two radius values [X, Y]. The corners are ordered top-left, top-right, bottom-right, bottom-left
Parameters | |
---|---|
rect |
RectF : The bounds of a round-rectangle to add to the path
This value cannot be null . |
radii |
float : Array of 8 values, 4 pairs of [X,Y] radii
This value cannot be null . |
dir |
Path.Direction : The direction to wind the round-rectangle's contour
This value cannot be null . |
approximate
public float[] approximate (float acceptableError)
Approximate the Path
with a series of line segments.
This returns float[] with the array containing point components.
There are three components for each point, in order:
- Fraction along the length of the path that the point resides
- The x coordinate of the point
- The y coordinate of the point
Two points may share the same fraction along its length when there is a move action within the Path.
Parameters | |
---|---|
acceptableError |
float : The acceptable error for a line on the
Path. Typically this would be 0.5 so that
the error is less than half a pixel.
Value is 0 or greater |
Returns | |
---|---|
float[] |
An array of components for points approximating the Path.
This value cannot be null . |
arcTo
public void arcTo (RectF oval, float startAngle, float sweepAngle, boolean forceMoveTo)
Append the specified arc to the path as a new contour. If the start of the path is different from the path's current last point, then an automatic lineTo() is added to connect the current contour to the start of the arc. However, if the path is empty, then we call moveTo() with the first point of the arc.
Parameters | |
---|---|
oval |
RectF : The bounds of oval defining shape and size of the arc
This value cannot be null . |
startAngle |
float : Starting angle (in degrees) where the arc begins |
sweepAngle |
float : Sweep angle (in degrees) measured clockwise, treated
mod 360. |
forceMoveTo |
boolean : If true, always begin a new contour with the arc |
arcTo
public void arcTo (float left, float top, float right, float bottom, float startAngle, float sweepAngle, boolean forceMoveTo)
Append the specified arc to the path as a new contour. If the start of the path is different from the path's current last point, then an automatic lineTo() is added to connect the current contour to the start of the arc. However, if the path is empty, then we call moveTo() with the first point of the arc.
Parameters | |
---|---|
left |
float |
top |
float |
right |
float |
bottom |
float |
startAngle |
float : Starting angle (in degrees) where the arc begins |
sweepAngle |
float : Sweep angle (in degrees) measured clockwise, treated
mod 360. |
forceMoveTo |
boolean : If true, always begin a new contour with the arc |
arcTo
public void arcTo (RectF oval, float startAngle, float sweepAngle)
Append the specified arc to the path as a new contour. If the start of the path is different from the path's current last point, then an automatic lineTo() is added to connect the current contour to the start of the arc. However, if the path is empty, then we call moveTo() with the first point of the arc.
Parameters | |
---|---|
oval |
RectF : The bounds of oval defining shape and size of the arc
This value cannot be null . |
startAngle |
float : Starting angle (in degrees) where the arc begins |
sweepAngle |
float : Sweep angle (in degrees) measured clockwise |
close
public void close ()
Close the current contour. If the current point is not equal to the first point of the contour, a line segment is automatically added.
computeBounds
public void computeBounds (RectF bounds, boolean exact)
This method was deprecated
in API level 35.
use computeBounds(RectF) instead
Compute the bounds of the control points of the path, and write the answer into bounds. If the path contains 0 or 1 points, the bounds is set to (0,0,0,0)
Parameters | |
---|---|
bounds |
RectF : Returns the computed bounds of the path's control points.
This value cannot be null . |
exact |
boolean : This parameter is no longer used. |
conicTo
public void conicTo (float x1, float y1, float x2, float y2, float weight)
Add a quadratic bezier from the last point, approaching control point
(x1,y1), and ending at (x2,y2), weighted by weight
. If no
moveTo() call has been made for this contour, the first point is
automatically set to (0,0).
A weight of 1 is equivalent to calling quadTo(float, float, float, float)
.
A weight of 0 is equivalent to calling lineTo(float, float)
to
(x1, y1)
followed by lineTo(float, float)
to (x2, y2)
.
Parameters | |
---|---|
x1 |
float : The x-coordinate of the control point on a conic curve |
y1 |
float : The y-coordinate of the control point on a conic curve |
x2 |
float : The x-coordinate of the end point on a conic curve |
y2 |
float : The y-coordinate of the end point on a conic curve |
weight |
float : The weight of the conic applied to the curve. A value of 1 is equivalent
to a quadratic with the given control and anchor points and a value of 0 is
equivalent to a line to the first and another line to the second point. |
cubicTo
public void cubicTo (float x1, float y1, float x2, float y2, float x3, float y3)
Add a cubic bezier from the last point, approaching control points (x1,y1) and (x2,y2), and ending at (x3,y3). If no moveTo() call has been made for this contour, the first point is automatically set to (0,0).
Parameters | |
---|---|
x1 |
float : The x-coordinate of the 1st control point on a cubic curve |
y1 |
float : The y-coordinate of the 1st control point on a cubic curve |
x2 |
float : The x-coordinate of the 2nd control point on a cubic curve |
y2 |
float : The y-coordinate of the 2nd control point on a cubic curve |
x3 |
float : The x-coordinate of the end point on a cubic curve |
y3 |
float : The y-coordinate of the end point on a cubic curve |
getFillType
public Path.FillType getFillType ()
Return the path's fill type. This defines how "inside" is computed. The default value is WINDING.
Returns | |
---|---|
Path.FillType |
the path's fill type
This value cannot be null . |
getGenerationId
public int getGenerationId ()
Returns the generation ID of this path. The generation ID changes whenever the path is modified. This can be used as an efficient way to check if a path has changed.
Returns | |
---|---|
int |
The current generation ID for this path |
getPathIterator
public PathIterator getPathIterator ()
Returns an iterator over the segments of this path.
Returns | |
---|---|
PathIterator |
the Iterator object
This value cannot be null . |
incReserve
public void incReserve (int extraPtCount)
Hint to the path to prepare for adding more points. This can allow the path to more efficiently allocate its storage.
Parameters | |
---|---|
extraPtCount |
int : The number of extra points that may be added to this
path |
interpolate
public boolean interpolate (Path otherPath, float t, Path interpolatedPath)
This method will linearly interpolate from this path to otherPath
given
the interpolation parameter t
, returning the result in
interpolatedPath
. Interpolation will only succeed if the structures of the
two paths match exactly, as discussed in isInterpolatable(android.graphics.Path)
.
Parameters | |
---|---|
otherPath |
Path : The other Path being interpolated to.
This value cannot be null . |
t |
float : The interpolation parameter. A value of 0 results in a Path
equivalent to this path, a value of 1 results in one equivalent to
otherPath . |
interpolatedPath |
Path : The interpolated results.
This value cannot be null . |
Returns | |
---|---|
boolean |
isConvex
public boolean isConvex ()
This method was deprecated
in API level 30.
This method is not reliable. The way convexity is computed may change from
release to release, and convexity could change based on a matrix as well. This method was
useful when non-convex Paths were unable to be used in certain contexts, but that is no
longer the case.
Returns the path's convexity, as defined by the content of the path.
A path is convex if it has a single contour, and only ever curves in a single direction.
This function will calculate the convexity of the path from its control points, and cache the result.
Returns | |
---|---|
boolean |
True if the path is convex. |
isEmpty
public boolean isEmpty ()
Returns true if the path is empty (contains no lines or curves)
Returns | |
---|---|
boolean |
true if the path is empty (contains no lines or curves) |
isInterpolatable
public boolean isInterpolatable (Path otherPath)
Two paths can be interpolated, by calling interpolate(android.graphics.Path, float, android.graphics.Path)
, if they
have exactly the same structure. That is, both paths must have the same
operations, in the same order. If any of the operations are
of type PathIterator#VERB_CONIC
, then the weights of those conics must also match.
Parameters | |
---|---|
otherPath |
Path : The other Path being interpolated to from this one.
This value cannot be null . |
Returns | |
---|---|
boolean |
true if interpolation is possible, false otherwise |
isInverseFillType
public boolean isInverseFillType ()
Returns true if the filltype is one of the INVERSE variants
Returns | |
---|---|
boolean |
true if the filltype is one of the INVERSE variants |
isRect
public boolean isRect (RectF rect)
Returns true if the path specifies a rectangle. If so, and if rect is not null, set rect to the bounds of the path. If the path does not specify a rectangle, return false and ignore rect.
Parameters | |
---|---|
rect |
RectF : If not null, returns the bounds of the path if it specifies
a rectangle |
Returns | |
---|---|
boolean |
true if the path specifies a rectangle |
lineTo
public void lineTo (float x, float y)
Add a line from the last point to the specified point (x,y). If no moveTo() call has been made for this contour, the first point is automatically set to (0,0).
Parameters | |
---|---|
x |
float : The x-coordinate of the end of a line |
y |
float : The y-coordinate of the end of a line |
moveTo
public void moveTo (float x, float y)
Set the beginning of the next contour to the point (x,y).
Parameters | |
---|---|
x |
float : The x-coordinate of the start of a new contour |
y |
float : The y-coordinate of the start of a new contour |
offset
public void offset (float dx, float dy, Path dst)
Offset the path by (dx,dy)
Parameters | |
---|---|
dx |
float : The amount in the X direction to offset the entire path |
dy |
float : The amount in the Y direction to offset the entire path |
dst |
Path : The translated path is written here. If this is null, then
the original path is modified. |
offset
public void offset (float dx, float dy)
Offset the path by (dx,dy)
Parameters | |
---|---|
dx |
float : The amount in the X direction to offset the entire path |
dy |
float : The amount in the Y direction to offset the entire path |
op
public boolean op (Path path1, Path path2, Path.Op op)
Set this path to the result of applying the Op to the two specified paths. The resulting path will be constructed from non-overlapping contours. The curve order is reduced where possible so that cubics may be turned into quadratics, and quadratics maybe turned into lines.
Parameters | |
---|---|
path1 |
Path : The first operand (for difference, the minuend)
This value cannot be null . |
path2 |
Path : The second operand (for difference, the subtrahend)
This value cannot be null . |
op |
Path.Op : This value cannot be null . |
Returns | |
---|---|
boolean |
True if operation succeeded, false otherwise and this path remains unmodified. |
op
public boolean op (Path path, Path.Op op)
Set this path to the result of applying the Op to this path and the specified path. The resulting path will be constructed from non-overlapping contours. The curve order is reduced where possible so that cubics may be turned into quadratics, and quadratics maybe turned into lines.
Parameters | |
---|---|
path |
Path : The second operand (for difference, the subtrahend)
This value cannot be null . |
op |
Path.Op : This value cannot be null . |
Returns | |
---|---|
boolean |
True if operation succeeded, false otherwise and this path remains unmodified. |
quadTo
public void quadTo (float x1, float y1, float x2, float y2)
Add a quadratic bezier from the last point, approaching control point (x1,y1), and ending at (x2,y2). If no moveTo() call has been made for this contour, the first point is automatically set to (0,0).
Parameters | |
---|---|
x1 |
float : The x-coordinate of the control point on a quadratic curve |
y1 |
float : The y-coordinate of the control point on a quadratic curve |
x2 |
float : The x-coordinate of the end point on a quadratic curve |
y2 |
float : The y-coordinate of the end point on a quadratic curve |
rConicTo
public void rConicTo (float dx1, float dy1, float dx2, float dy2, float weight)
Same as conicTo, but the coordinates are considered relative to the last point on this contour. If there is no previous point, then a moveTo(0,0) is inserted automatically.
Parameters | |
---|---|
dx1 |
float : The amount to add to the x-coordinate of the last point on
this contour, for the control point of a conic curve |
dy1 |
float : The amount to add to the y-coordinate of the last point on
this contour, for the control point of a conic curve |
dx2 |
float : The amount to add to the x-coordinate of the last point on
this contour, for the end point of a conic curve |
dy2 |
float : The amount to add to the y-coordinate of the last point on
this contour, for the end point of a conic curve |
weight |
float : The weight of the conic applied to the curve. A value of 1 is equivalent
to a quadratic with the given control and anchor points and a value of 0 is
equivalent to a line to the first and another line to the second point. |
rCubicTo
public void rCubicTo (float x1, float y1, float x2, float y2, float x3, float y3)
Same as cubicTo, but the coordinates are considered relative to the current point on this contour. If there is no previous point, then a moveTo(0,0) is inserted automatically.
Parameters | |
---|---|
x1 |
float |
y1 |
float |
x2 |
float |
y2 |
float |
x3 |
float |
y3 |
float |
rLineTo
public void rLineTo (float dx, float dy)
Same as lineTo, but the coordinates are considered relative to the last point on this contour. If there is no previous point, then a moveTo(0,0) is inserted automatically.
Parameters | |
---|---|
dx |
float : The amount to add to the x-coordinate of the previous point on
this contour, to specify a line |
dy |
float : The amount to add to the y-coordinate of the previous point on
this contour, to specify a line |
rMoveTo
public void rMoveTo (float dx, float dy)
Set the beginning of the next contour relative to the last point on the previous contour. If there is no previous contour, this is treated the same as moveTo().
Parameters | |
---|---|
dx |
float : The amount to add to the x-coordinate of the end of the
previous contour, to specify the start of a new contour |
dy |
float : The amount to add to the y-coordinate of the end of the
previous contour, to specify the start of a new contour |
rQuadTo
public void rQuadTo (float dx1, float dy1, float dx2, float dy2)
Same as quadTo, but the coordinates are considered relative to the last point on this contour. If there is no previous point, then a moveTo(0,0) is inserted automatically.
Parameters | |
---|---|
dx1 |
float : The amount to add to the x-coordinate of the last point on
this contour, for the control point of a quadratic curve |
dy1 |
float : The amount to add to the y-coordinate of the last point on
this contour, for the control point of a quadratic curve |
dx2 |
float : The amount to add to the x-coordinate of the last point on
this contour, for the end point of a quadratic curve |
dy2 |
float : The amount to add to the y-coordinate of the last point on
this contour, for the end point of a quadratic curve |
reset
public void reset ()
Clear any lines and curves from the path, making it empty. This does NOT change the fill-type setting.
rewind
public void rewind ()
Rewinds the path: clears any lines and curves from the path but keeps the internal data structure for faster reuse.
set
public void set (Path src)
Replace the contents of this with the contents of src.
Parameters | |
---|---|
src |
Path : This value cannot be null . |
setFillType
public void setFillType (Path.FillType ft)
Set the path's fill type. This defines how "inside" is computed.
Parameters | |
---|---|
ft |
Path.FillType : The new fill type for this path
This value cannot be null . |
setLastPoint
public void setLastPoint (float dx, float dy)
Sets the last point of the path.
Parameters | |
---|---|
dx |
float : The new X coordinate for the last point |
dy |
float : The new Y coordinate for the last point |
toggleInverseFillType
public void toggleInverseFillType ()
Toggles the INVERSE state of the filltype
transform
public void transform (Matrix matrix)
Transform the points in this path by matrix.
Parameters | |
---|---|
matrix |
Matrix : The matrix to apply to the path
This value cannot be null . |
transform
public void transform (Matrix matrix, Path dst)
Transform the points in this path by matrix, and write the answer into dst. If dst is null, then the the original path is modified.
Parameters | |
---|---|
matrix |
Matrix : The matrix to apply to the path
This value cannot be null . |
dst |
Path : The transformed path is written here. If dst is null,
then the the original path is modified |