PathTextSlide::WavyGlyphAnimator Class Reference

Inheritance diagram for PathTextSlide::WavyGlyphAnimator:

Public Member Functions
	WavyGlyphAnimator (Glyph *glyphs)
	~WavyGlyphAnimator () override
void	reset (SkRandom *rand, int screenWidth, int screenHeight) override
void	runAnimationTask (double t, double dt, int width, int height) override
void	swapAnimationBuffers () override
void	draw (SkCanvas *canvas) override
Public Member Functions inherited from PathTextSlide::MovingGlyphAnimator
	MovingGlyphAnimator (Glyph *glyphs)
	~MovingGlyphAnimator () override
void	reset (SkRandom *rand, int screenWidth, int screenHeight) override
bool	animate (double nanos, int screenWidth, int screenHeight) final
virtual void	runAnimationTask (double t, double dt, int w, int h)
virtual void	swapAnimationBuffers ()
void	draw (SkCanvas *canvas) override
Public Member Functions inherited from PathTextSlide::GlyphAnimator
	GlyphAnimator (Glyph *glyphs)
virtual void	reset (SkRandom *, int screenWidth, int screenHeight)
virtual bool	animate (double nanos, int screenWidth, int screenHeight)
virtual void	draw (SkCanvas *canvas)
virtual	~GlyphAnimator ()

Additional Inherited Members
Protected Attributes inherited from PathTextSlide::MovingGlyphAnimator
Velocity	fVelocities [kNumPaths]
std::unique_ptr< SkMatrix[]>	fFrontMatrices
std::unique_ptr< SkMatrix[]>	fBackMatrices
SkTaskGroup	fBackgroundAnimationTask
double	fLastTick
Protected Attributes inherited from PathTextSlide::GlyphAnimator
Glyph *const	fGlyphs

Detailed Description

Definition at line 261 of file PathTextSlide.cpp.

Constructor & Destructor Documentation

WavyGlyphAnimator()

PathTextSlide::WavyGlyphAnimator::WavyGlyphAnimator ( Glyph *  glyphs )

inline

Definition at line 263 of file PathTextSlide.cpp.

            : MovingGlyphAnimator(glyphs)
            , fFrontPaths(new SkPath[kNumPaths])
            , fBackPaths(new SkPath[kNumPaths]) {
    }

~WavyGlyphAnimator()

PathTextSlide::WavyGlyphAnimator::~WavyGlyphAnimator ( )

inlineoverride

Definition at line 269 of file PathTextSlide.cpp.

                                  {
        fBackgroundAnimationTask.wait();
    }

Member Function Documentation

draw()

void PathTextSlide::WavyGlyphAnimator::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Reimplemented from PathTextSlide::MovingGlyphAnimator.

Definition at line 336 of file PathTextSlide.cpp.

                                         {
        for (int i = 0; i < kNumPaths; ++i) {
            canvas->drawPath(fFrontPaths[i], fGlyphs[i].fPaint);
        }
    }

reset()

void PathTextSlide::WavyGlyphAnimator::reset ( SkRandom *  rand, int  screenWidth, int  screenHeight  )

inlineoverridevirtual

Reimplemented from PathTextSlide::MovingGlyphAnimator.

Definition at line 273 of file PathTextSlide.cpp.

                                                                           {
        fWaves.reset(*rand, screenWidth, screenHeight);
        this->MovingGlyphAnimator::reset(rand, screenWidth, screenHeight);
        std::copy(fBackPaths.get(), fBackPaths.get() + kNumPaths, fFrontPaths.get());
    }

runAnimationTask()

void PathTextSlide::WavyGlyphAnimator::runAnimationTask ( double  t, double  dt, int  width, int  height  )

inlineoverridevirtual

Called on a background thread. Here we can only modify fBackPaths.

Reimplemented from PathTextSlide::MovingGlyphAnimator.

Definition at line 282 of file PathTextSlide.cpp.

                                                                               {
        const float tsec = static_cast<float>(t);
        this->MovingGlyphAnimator::runAnimationTask(t, 0.5 * dt, width, height);
 
        for (int i = 0; i < kNumPaths; ++i) {
            const Glyph& glyph = fGlyphs[i];
            const SkMatrix& backMatrix = fBackMatrices[i];
 
            const skvx::float2 matrix[3] = {
                skvx::float2(backMatrix.getScaleX(), backMatrix.getSkewY()),
                skvx::float2(backMatrix.getSkewX(), backMatrix.getScaleY()),
                skvx::float2(backMatrix.getTranslateX(), backMatrix.getTranslateY())
            };
 
            SkPath* backpath = &fBackPaths[i];
            backpath->reset();
            backpath->setFillType(SkPathFillType::kEvenOdd);
 
            for (auto [verb, pts, w] : SkPathPriv::Iterate(glyph.fPath)) {
                switch (verb) {
                    case SkPathVerb::kMove: {
                        SkPoint pt = fWaves.apply(tsec, matrix, pts[0]);
                        backpath->moveTo(pt.x(), pt.y());
                        break;
                    }
                    case SkPathVerb::kLine: {
                        SkPoint endpt = fWaves.apply(tsec, matrix, pts[1]);
                        backpath->lineTo(endpt.x(), endpt.y());
                        break;
                    }
                    case SkPathVerb::kQuad: {
                        SkPoint controlPt = fWaves.apply(tsec, matrix, pts[1]);
                        SkPoint endpt = fWaves.apply(tsec, matrix, pts[2]);
                        backpath->quadTo(controlPt.x(), controlPt.y(), endpt.x(), endpt.y());
                        break;
                    }
                    case SkPathVerb::kClose: {
                        backpath->close();
                        break;
                    }
                    case SkPathVerb::kCubic:
                    case SkPathVerb::kConic:
                        SK_ABORT("Unexpected path verb");
                        break;
                }
            }
        }
    }

swapAnimationBuffers()

void PathTextSlide::WavyGlyphAnimator::swapAnimationBuffers ( )

inlineoverridevirtual

Reimplemented from PathTextSlide::MovingGlyphAnimator.

Definition at line 331 of file PathTextSlide.cpp.

                                         {
        this->MovingGlyphAnimator::swapAnimationBuffers();
        std::swap(fFrontPaths, fBackPaths);
    }

---

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

• third_party/skia/tools/viewer/PathTextSlide.cpp