skottie::internal::TransformAdapter2D Class Reference

#include <Transform.h>

Inheritance diagram for skottie::internal::TransformAdapter2D:

Public Member Functions
	TransformAdapter2D (const AnimationBuilder &, const skjson::ObjectValue *janchor_point, const skjson::ObjectValue *jposition, const skjson::ObjectValue *jscale, const skjson::ObjectValue *jrotation, const skjson::ObjectValue *jskew, const skjson::ObjectValue *jskew_axis, bool auto_orient=false)
	~TransformAdapter2D () override
SkPoint	getAnchorPoint () const
void	setAnchorPoint (const SkPoint &)
SkPoint	getPosition () const
void	setPosition (const SkPoint &)
SkVector	getScale () const
void	setScale (const SkVector &)
float	getRotation () const
void	setRotation (float r)
float	getSkew () const
void	setSkew (float sk)
float	getSkewAxis () const
void	setSkewAxis (float sa)
SkMatrix	totalMatrix () const
Public Member Functions inherited from skottie::internal::DiscardableAdapterBase< TransformAdapter2D, sksg::Matrix< SkMatrix > >
const sk_sp< sksg::Matrix< SkMatrix > > &	node () const
Public Member Functions inherited from skottie::internal::AnimatablePropertyContainer
template<typename T >
bool	bind (const AnimationBuilder &, const skjson::ObjectValue *, T *)
template<typename T >
bool	bind (const AnimationBuilder &abuilder, const skjson::ObjectValue *jobject, T &v)
bool	bindAutoOrientable (const AnimationBuilder &abuilder, const skjson::ObjectValue *jobject, SkV2 *v, float *orientation)
bool	isStatic () const
template<>
bool	bind (const AnimationBuilder &abuilder, const skjson::ObjectValue *jprop, ScalarValue *v)
template<>
bool	bind (const AnimationBuilder &abuilder, const skjson::ObjectValue *jprop, ShapeValue *v)
template<>
bool	bind (const AnimationBuilder &abuilder, const skjson::ObjectValue *jprop, TextValue *v)
template<>
bool	bind (const AnimationBuilder &abuilder, const skjson::ObjectValue *jprop, Vec2Value *v)
template<>
bool	bind (const AnimationBuilder &abuilder, const skjson::ObjectValue *jprop, VectorValue *v)
template<>
bool	bind (const AnimationBuilder &abuilder, const skjson::ObjectValue *jprop, ColorValue *v)
Public Member Functions inherited from skottie::internal::Animator
StateChanged	seek (float t)
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Private Member Functions
void	onSync () override

Additional Inherited Members
Public Types inherited from skottie::internal::Animator
using	StateChanged = bool
Static Public Member Functions inherited from skottie::internal::DiscardableAdapterBase< TransformAdapter2D, sksg::Matrix< SkMatrix > >
static sk_sp< TransformAdapter2D >	Make (Args &&... args)
Protected Member Functions inherited from skottie::internal::DiscardableAdapterBase< TransformAdapter2D, sksg::Matrix< SkMatrix > >
	DiscardableAdapterBase ()
	DiscardableAdapterBase (sk_sp< sksg::Matrix< SkMatrix > > node)
Protected Member Functions inherited from skottie::internal::AnimatablePropertyContainer
void	shrink_to_fit ()
void	attachDiscardableAdapter (sk_sp< AnimatablePropertyContainer >)
Protected Member Functions inherited from skottie::internal::Animator
	Animator ()=default

Detailed Description

Definition at line 29 of file Transform.h.

Constructor & Destructor Documentation

TransformAdapter2D()

skottie::internal::TransformAdapter2D::TransformAdapter2D	(	const AnimationBuilder &	abuilder,
		const skjson::ObjectValue *	janchor_point,
		const skjson::ObjectValue *	jposition,
		const skjson::ObjectValue *	jscale,
		const skjson::ObjectValue *	jrotation,
		const skjson::ObjectValue *	jskew,
		const skjson::ObjectValue *	jskew_axis,
		bool	auto_orient = false
	)

Definition at line 23 of file Transform.cpp.

    : INHERITED(sksg::Matrix<SkMatrix>::Make(SkMatrix::I())) {
 
    this->bind(abuilder, janchor_point, fAnchorPoint);
    this->bind(abuilder, jscale       , fScale);
    this->bind(abuilder, jrotation    , fRotation);
    this->bind(abuilder, jskew        , fSkew);
    this->bind(abuilder, jskew_axis   , fSkewAxis);
 
    this->bindAutoOrientable(abuilder, jposition, &fPosition, auto_orient ? &fOrientation
                                                                          : nullptr);
}

~TransformAdapter2D()

skottie::internal::TransformAdapter2D::~TransformAdapter2D ( )

override

Definition at line 43 of file Transform.cpp.

{}

Member Function Documentation

getAnchorPoint()

SkPoint skottie::internal::TransformAdapter2D::getAnchorPoint

(

)

const

Definition at line 72 of file Transform.cpp.

                                                 {
    return { fAnchorPoint.x, fAnchorPoint.y };
}

getPosition()

SkPoint skottie::internal::TransformAdapter2D::getPosition

(

)

const

Definition at line 81 of file Transform.cpp.

                                              {
    return { fPosition.x, fPosition.y };
}

getRotation()

float skottie::internal::TransformAdapter2D::getRotation ( ) const

inline

Definition at line 53 of file Transform.h.

{ return fRotation; }

getScale()

SkVector skottie::internal::TransformAdapter2D::getScale

(

)

const

Definition at line 90 of file Transform.cpp.

                                            {
    return { fScale.x, fScale.y };
}

getSkew()

float skottie::internal::TransformAdapter2D::getSkew ( ) const

inline

Definition at line 56 of file Transform.h.

{ return fSkew; }

getSkewAxis()

float skottie::internal::TransformAdapter2D::getSkewAxis ( ) const

inline

Definition at line 59 of file Transform.h.

{ return fSkewAxis; }

onSync()

void skottie::internal::TransformAdapter2D::onSync ( )

overrideprivatevirtual

Implements skottie::internal::AnimatablePropertyContainer.

Definition at line 45 of file Transform.cpp.

                                {
    this->node()->setMatrix(this->totalMatrix());
}

setAnchorPoint()

void skottie::internal::TransformAdapter2D::setAnchorPoint

(

const SkPoint &

ap

)

Definition at line 76 of file Transform.cpp.

                                                         {
    fAnchorPoint = { ap.x(), ap.y() };
    this->onSync();
}

setPosition()

void skottie::internal::TransformAdapter2D::setPosition

(

const SkPoint &

p

)

Definition at line 85 of file Transform.cpp.

                                                     {
    fPosition = { p.x(), p.y() };
    this->onSync();
}

setRotation()

void skottie::internal::TransformAdapter2D::setRotation

(

float

r

)

Definition at line 99 of file Transform.cpp.

                                            {
    fRotation = r;
    this->onSync();
}

setScale()

void skottie::internal::TransformAdapter2D::setScale

(

const SkVector &

s

)

Definition at line 94 of file Transform.cpp.

                                                   {
    fScale = { s.x(), s.y() };
    this->onSync();
}

setSkew()

void skottie::internal::TransformAdapter2D::setSkew

(

float

sk

)

Definition at line 104 of file Transform.cpp.

                                         {
    fSkew = sk;
    this->onSync();
}

setSkewAxis()

void skottie::internal::TransformAdapter2D::setSkewAxis

(

float

sa

)

Definition at line 109 of file Transform.cpp.

                                             {
    fSkewAxis = sa;
    this->onSync();
}

totalMatrix()

SkMatrix skottie::internal::TransformAdapter2D::totalMatrix

(

)

const

Definition at line 49 of file Transform.cpp.

                                               {
    auto skew_matrix = [](float sk, float sa) {
        if (!sk) return SkMatrix::I();
 
        // AE control limit.
        static constexpr float kMaxSkewAngle = 85;
        sk = -SkDegreesToRadians(SkTPin(sk, -kMaxSkewAngle, kMaxSkewAngle));
        sa =  SkDegreesToRadians(sa);
 
        // Similar to CSS/SVG SkewX [1] with an explicit rotation.
        // [1] https://www.w3.org/TR/css-transforms-1/#SkewXDefined
        return SkMatrix::RotateRad(sa)
             * SkMatrix::Skew(std::tan(sk), 0)
             * SkMatrix::RotateRad(-sa);
    };
 
    return SkMatrix::Translate(fPosition.x, fPosition.y)
         * SkMatrix::RotateDeg(fRotation + fOrientation)
         * skew_matrix        (fSkew, fSkewAxis)
         * SkMatrix::Scale    (fScale.x / 100, fScale.y / 100) // 100% based
         * SkMatrix::Translate(-fAnchorPoint.x, -fAnchorPoint.y);
}

---

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

• third_party/skia/modules/skottie/src/Transform.h
• third_party/skia/modules/skottie/src/Transform.cpp