SkPathMeasure Class Reference

#include <SkPathMeasure.h>

Public Types
enum	MatrixFlags { kGetPosition_MatrixFlag = 0x01 , kGetTangent_MatrixFlag = 0x02 , kGetPosAndTan_MatrixFlag = kGetPosition_MatrixFlag | kGetTangent_MatrixFlag }

Public Member Functions
	SkPathMeasure ()
	SkPathMeasure (const SkPath &path, bool forceClosed, SkScalar resScale=1)
	~SkPathMeasure ()
	SkPathMeasure (SkPathMeasure &&)=default
SkPathMeasure &	operator= (SkPathMeasure &&)=default
void	setPath (const SkPath *, bool forceClosed)
SkScalar	getLength ()
bool	getPosTan (SkScalar distance, SkPoint *position, SkVector *tangent)
bool	getMatrix (SkScalar distance, SkMatrix *matrix, MatrixFlags flags=kGetPosAndTan_MatrixFlag)
bool	getSegment (SkScalar startD, SkScalar stopD, SkPath *dst, bool startWithMoveTo)
bool	isClosed ()
bool	nextContour ()
const SkContourMeasure *	currentMeasure () const

Detailed Description

Definition at line 21 of file SkPathMeasure.h.

Member Enumeration Documentation

MatrixFlags

enum SkPathMeasure::MatrixFlags

Enumerator
kGetPosition_MatrixFlag
kGetTangent_MatrixFlag
kGetPosAndTan_MatrixFlag

Definition at line 53 of file SkPathMeasure.h.

                     {
        kGetPosition_MatrixFlag     = 0x01,
        kGetTangent_MatrixFlag      = 0x02,
        kGetPosAndTan_MatrixFlag    = kGetPosition_MatrixFlag | kGetTangent_MatrixFlag
    };

Constructor & Destructor Documentation

SkPathMeasure() [1/3]

SkPathMeasure::SkPathMeasure

(

)

Definition at line 21 of file SkPathMeasure.cpp.

{}

SkPathMeasure() [2/3]

SkPathMeasure::SkPathMeasure	(	const SkPath &	path,
		bool	forceClosed,
		SkScalar	resScale = 1
	)

Initialize the pathmeasure with the specified path. The parts of the path that are needed are copied, so the client is free to modify/delete the path after this call.

resScale controls the precision of the measure. values > 1 increase the precision (and possibly slow down the computation).

Definition at line 23 of file SkPathMeasure.cpp.

    : fIter(path, forceClosed, resScale)
{
    fContour = fIter.next();
}

~SkPathMeasure()

SkPathMeasure::~SkPathMeasure

(

)

Definition at line 29 of file SkPathMeasure.cpp.

{}

SkPathMeasure() [3/3]

SkPathMeasure::SkPathMeasure ( SkPathMeasure &&  )

default

Member Function Documentation

currentMeasure()

const SkContourMeasure * SkPathMeasure::currentMeasure ( ) const

inline

Definition at line 88 of file SkPathMeasure.h.

{ return fContour.get(); }

getLength()

SkScalar SkPathMeasure::getLength

(

)

Return the total length of the current contour, or 0 if no path is associated (e.g. resetPath(null))

Definition at line 36 of file SkPathMeasure.cpp.

                                  {
    return fContour ? fContour->length() : 0;
}

getMatrix()

bool SkPathMeasure::getMatrix	(	SkScalar	distance,
		SkMatrix *	matrix,
		MatrixFlags	flags = kGetPosAndTan_MatrixFlag
	)

Pins distance to 0 <= distance <= getLength(), and then computes the corresponding matrix (by calling getPosTan). Returns false if there is no path, or a zero-length path was specified, in which case matrix is unchanged.

Definition at line 44 of file SkPathMeasure.cpp.

                                                                                    {
    return fContour && fContour->getMatrix(distance, matrix, (SkContourMeasure::MatrixFlags)flags);
}

getPosTan()

bool SkPathMeasure::getPosTan	(	SkScalar	distance,
		SkPoint *	position,
		SkVector *	tangent
	)

Pins distance to 0 <= distance <= getLength(), and then computes the corresponding position and tangent. Returns false if there is no path, or a zero-length path was specified, in which case position and tangent are unchanged.

Definition at line 40 of file SkPathMeasure.cpp.

                                                                                     {
    return fContour && fContour->getPosTan(distance, position, tangent);
}

getSegment()

bool SkPathMeasure::getSegment	(	SkScalar	startD,
		SkScalar	stopD,
		SkPath *	dst,
		bool	startWithMoveTo
	)

Given a start and stop distance, return in dst the intervening segment(s). If the segment is zero-length, return false, else return true. startD and stopD are pinned to legal values (0..getLength()). If startD > stopD then return false (and leave dst untouched). Begin the segment with a moveTo if startWithMoveTo is true

Definition at line 48 of file SkPathMeasure.cpp.

                                                                                                 {
    return fContour && fContour->getSegment(startD, stopD, dst, startWithMoveTo);
}

isClosed()

bool SkPathMeasure::isClosed

(

)

Return true if the current contour is closed()

Definition at line 52 of file SkPathMeasure.cpp.

                             {
    return fContour && fContour->isClosed();
}

nextContour()

bool SkPathMeasure::nextContour

(

)

Move to the next contour in the path. Return true if one exists, or false if we're done with the path.

Definition at line 56 of file SkPathMeasure.cpp.

                                {
    fContour = fIter.next();
    return !!fContour;
}

operator=()

SkPathMeasure & SkPathMeasure::operator= ( SkPathMeasure &&  )

default

setPath()

void SkPathMeasure::setPath	(	const SkPath *	path,
		bool	forceClosed
	)

Reset the pathmeasure with the specified path. The parts of the path that are needed are copied, so the client is free to modify/delete the path after this call..

Definition at line 31 of file SkPathMeasure.cpp.

                                                                {
    fIter.reset(path ? *path : SkPath(), forceClosed);
    fContour = fIter.next();
}

---

The documentation for this class was generated from the following files:

• third_party/skia/include/core/SkPathMeasure.h
• third_party/skia/src/core/SkPathMeasure.cpp