DegenerateTwoPtRadialsSlide Class Reference

Inheritance diagram for DegenerateTwoPtRadialsSlide:

Public Member Functions
	DegenerateTwoPtRadialsSlide ()
void	draw (SkCanvas *canvas) override
bool	animate (double nanos) override
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
virtual void	load (SkScalar winWidth, SkScalar winHeight)
virtual void	resize (SkScalar winWidth, SkScalar winHeight)
virtual void	unload ()
virtual bool	onChar (SkUnichar c)
virtual bool	onMouse (SkScalar x, SkScalar y, skui::InputState state, skui::ModifierKey modifiers)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
const SkString &	getName ()
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 38 of file DegenerateTwoPtRadialsSlide.cpp.

Constructor & Destructor Documentation

DegenerateTwoPtRadialsSlide()

DegenerateTwoPtRadialsSlide::DegenerateTwoPtRadialsSlide ( )

inline

Definition at line 40 of file DegenerateTwoPtRadialsSlide.cpp.

{ fName = "DegenerateTwoPtRadials"; }

Member Function Documentation

animate()

bool DegenerateTwoPtRadialsSlide::animate ( double  nanos )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 68 of file DegenerateTwoPtRadialsSlide.cpp.

                                        {
        fTime = SkDoubleToScalar(1e-9 * nanos / 15);
        return true;
    }

draw()

void DegenerateTwoPtRadialsSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 42 of file DegenerateTwoPtRadialsSlide.cpp.

                                         {
        canvas->clear(0xFFDDDDDD);
        SkScalar delta = fTime / 15.f;
        int intPart = SkScalarFloorToInt(delta);
        delta = delta - SK_Scalar1 * intPart;
        if (intPart % 2) {
            delta = SK_Scalar1 - delta;
        }
        delta -= SK_ScalarHalf;
        static const int DELTA_SCALE = 500;
        delta /= DELTA_SCALE;
 
        SkScalar w = SK_Scalar1 * 500;
        SkScalar h = SK_Scalar1 * 500;
        SkScalar l = SK_Scalar1 * 100;
        SkScalar t = SK_Scalar1 * 100;
        draw_gradient2(canvas, SkRect::MakeXYWH(l, t, w, h), delta);
        SkString txt;
        txt.appendf("gap at \"tangent\" pt = %f", delta);
        canvas->drawString(txt,
                           l + w / 2 + w * DELTA_SCALE * delta,
                           t + h + SK_Scalar1 * 10,
                           ToolUtils::DefaultFont(),
                           SkPaint());
    }

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

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