skiagm::ConvexLineOnlyPathsGM Class Reference

Inheritance diagram for skiagm::ConvexLineOnlyPathsGM:

Public Member Functions
	ConvexLineOnlyPathsGM (bool doStrokeAndFill)
Public Member Functions inherited from skiagm::GM
	GM (SkColor backgroundColor=SK_ColorWHITE)
virtual	~GM ()
void	setMode (Mode mode)
Mode	getMode () const
DrawResult	gpuSetup (SkCanvas *, SkString *errorMsg, GraphiteTestContext *=nullptr)
void	gpuTeardown ()
void	onceBeforeDraw ()
DrawResult	draw (SkCanvas *canvas)
DrawResult	draw (SkCanvas *, SkString *errorMsg)
void	drawBackground (SkCanvas *)
DrawResult	drawContent (SkCanvas *canvas)
DrawResult	drawContent (SkCanvas *, SkString *errorMsg)
SkScalar	width ()
SkScalar	height ()
SkColor	getBGColor () const
void	setBGColor (SkColor)
void	drawSizeBounds (SkCanvas *, SkColor)
bool	animate (double)
virtual bool	onChar (SkUnichar)
bool	getControls (SkMetaData *controls)
void	setControls (const SkMetaData &controls)
virtual void	modifyGrContextOptions (GrContextOptions *)
virtual void	modifyGraphiteContextOptions (skgpu::graphite::ContextOptions *) const
virtual bool	isBazelOnly () const
virtual std::map< std::string, std::string >	getGoldKeys () const

Protected Member Functions
SkString	getName () const override
SkISize	getISize () override
bool	runAsBench () const override
void	drawPath (SkCanvas *canvas, int index, SkPoint *offset)
void	onDraw (SkCanvas *canvas) override
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
virtual void	onOnceBeforeDraw ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
virtual bool	onAnimate (double)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
GraphiteTestContext *	graphiteTestContext () const

Static Protected Member Functions
static SkPath	GetPath (int index, SkPathDirection dir)

Additional Inherited Members
Public Types inherited from skiagm::GM
enum	Mode { kGM_Mode , kSample_Mode , kBench_Mode }
using	DrawResult = skiagm::DrawResult
using	GraphiteTestContext = skiatest::graphite::GraphiteTestContext
Static Public Attributes inherited from skiagm::GM
static constexpr char	kErrorMsg_DrawSkippedGpuOnly []

Detailed Description

Definition at line 170 of file convex_all_line_paths.cpp.

Constructor & Destructor Documentation

ConvexLineOnlyPathsGM()

skiagm::ConvexLineOnlyPathsGM::ConvexLineOnlyPathsGM ( bool  doStrokeAndFill )

inline

Definition at line 172 of file convex_all_line_paths.cpp.

                                                : fDoStrokeAndFill(doStrokeAndFill) {
        this->setBGColor(0xFFFFFFFF);
    }

Member Function Documentation

drawPath()

void skiagm::ConvexLineOnlyPathsGM::drawPath ( SkCanvas *  canvas, int  index, SkPoint *  offset  )

inlineprotected

Definition at line 272 of file convex_all_line_paths.cpp.

                                                                {
 
        SkPoint center;
        {
            SkPath path = GetPath(index, SkPathDirection::kCW);
            if (offset->fX+path.getBounds().width() > kGMWidth) {
                offset->fX = 0;
                offset->fY += kMaxPathHeight;
                if (fDoStrokeAndFill) {
                    offset->fX += kStrokeWidth / 2.0f;
                    offset->fY += kStrokeWidth / 2.0f;
                }
            }
            center = { offset->fX + SkScalarHalf(path.getBounds().width()), offset->fY};
            offset->fX += path.getBounds().width();
            if (fDoStrokeAndFill) {
                offset->fX += kStrokeWidth;
            }
        }
 
        const SkColor colors[2] = { SK_ColorBLACK, SK_ColorWHITE };
        const SkPathDirection dirs[2] = { SkPathDirection::kCW, SkPathDirection::kCCW };
        const float scales[] = { 1.0f, 0.75f, 0.5f, 0.25f, 0.1f, 0.01f, 0.001f };
        const SkPaint::Join joins[3] = { SkPaint::kRound_Join,
                                         SkPaint::kBevel_Join,
                                         SkPaint::kMiter_Join };
 
        SkPaint paint;
        paint.setAntiAlias(true);
 
        for (size_t i = 0; i < std::size(scales); ++i) {
            SkPath path = GetPath(index, dirs[i%2]);
            if (fDoStrokeAndFill) {
                paint.setStyle(SkPaint::kStrokeAndFill_Style);
                paint.setStrokeJoin(joins[i%3]);
                paint.setStrokeWidth(SkIntToScalar(kStrokeWidth));
            }
 
            canvas->save();
                canvas->translate(center.fX, center.fY);
                canvas->scale(scales[i], scales[i]);
                paint.setColor(colors[i%2]);
                canvas->drawPath(path, paint);
            canvas->restore();
        }
    }

getISize()

SkISize skiagm::ConvexLineOnlyPathsGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 183 of file convex_all_line_paths.cpp.

{ return SkISize::Make(kGMWidth, kGMHeight); }

getName()

SkString skiagm::ConvexLineOnlyPathsGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 177 of file convex_all_line_paths.cpp.

                                      {
        if (fDoStrokeAndFill) {
            return SkString("convex-lineonly-paths-stroke-and-fill");
        }
        return SkString("convex-lineonly-paths");
    }

GetPath()

static SkPath skiagm::ConvexLineOnlyPathsGM::GetPath ( int  index, SkPathDirection  dir  )

inlinestaticprotected

Definition at line 186 of file convex_all_line_paths.cpp.

                                                          {
        std::unique_ptr<SkPoint[]> data(nullptr);
        const SkPoint* points;
        int numPts;
        if (index < (int) std::size(ConvexLineOnlyData::gPoints)) {
            // manually specified
            points = ConvexLineOnlyData::gPoints[index];
            numPts = (int)ConvexLineOnlyData::gSizes[index];
        } else {
            // procedurally generated
            SkScalar width = kMaxPathHeight/2;
            SkScalar height = kMaxPathHeight/2;
            switch (index-std::size(ConvexLineOnlyData::gPoints)) {
            case 0:
                numPts = 3;
                break;
            case 1:
                numPts = 4;
                break;
            case 2:
                numPts = 5;
                break;
            case 3:             // squashed pentagon
                numPts = 5;
                width = kMaxPathHeight/5;
                break;
            case 4:
                numPts = 6;
                break;
            case 5:
                numPts = 8;
                break;
            case 6:              // squashed octogon
                numPts = 8;
                width = kMaxPathHeight/5;
                break;
            case 7:
                numPts = 20;
                break;
            case 8:
                numPts = 100;
                break;
            default:
                numPts = 3;
                break;
            }
 
            data = std::make_unique<SkPoint[]>(numPts);
 
            create_ngon(numPts, data.get(), width, height);
            points = data.get();
        }
 
        SkPathBuilder builder;
 
        if (SkPathDirection::kCW == dir) {
            builder.moveTo(points[0]);
            for (int i = 1; i < numPts; ++i) {
                builder.lineTo(points[i]);
            }
        } else {
            builder.moveTo(points[numPts-1]);
            for (int i = numPts-2; i >= 0; --i) {
                builder.lineTo(points[i]);
            }
        }
 
        builder.close();
        SkPath path = builder.detach();
#ifdef SK_DEBUG
        // Each path this method returns should be convex, only composed of
        // lines, wound the right direction, and short enough to fit in one
        // of the GMs rows.
        SkASSERT(path.isConvex());
        SkASSERT(SkPath::kLine_SegmentMask == path.getSegmentMasks());
        SkPathFirstDirection actualDir = SkPathPriv::ComputeFirstDirection(path);
        SkASSERT(SkPathPriv::AsFirstDirection(dir) == actualDir);
        SkRect bounds = path.getBounds();
        SkASSERT(SkScalarNearlyEqual(bounds.centerX(), 0.0f));
        SkASSERT(bounds.height() <= kMaxPathHeight);
#endif
        return path;
    }

onDraw()

void skiagm::ConvexLineOnlyPathsGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 319 of file convex_all_line_paths.cpp.

                                           {
        // the right edge of the last drawn path
        SkPoint offset = { 0, SkScalarHalf(kMaxPathHeight) };
        if (fDoStrokeAndFill) {
            offset.fX += kStrokeWidth / 2.0f;
            offset.fY += kStrokeWidth / 2.0f;
        }
 
        for (int i = 0; i < kNumPaths; ++i) {
            this->drawPath(canvas, i, &offset);
        }
 
        {
            // Repro for crbug.com/472723 (Missing AA on portions of graphic with GPU rasterization)
 
            SkPaint p;
            p.setAntiAlias(true);
            if (fDoStrokeAndFill) {
                p.setStyle(SkPaint::kStrokeAndFill_Style);
                p.setStrokeJoin(SkPaint::kMiter_Join);
                p.setStrokeWidth(SkIntToScalar(kStrokeWidth));
            }
 
            SkPath p1 = SkPath::Polygon({
                {60.8522949f, 364.671021f},
                {59.4380493f, 364.671021f},
                {385.414276f, 690.647217f},
                {386.121399f, 689.940125f},
            }, false);
            canvas->save();
            canvas->translate(356.0f, 50.0f);
            canvas->drawPath(p1, p);
            canvas->restore();
 
            // Repro for crbug.com/869172 (SVG path incorrectly simplified when using GPU
            // Rasterization). This will only draw anything in the stroke-and-fill version.
            SkPath p2 = SkPath::Polygon({
                {10.f, 0.f},
                {38.f, 0.f},
                {66.f, 0.f},
                {94.f, 0.f},
                {122.f, 0.f},
                {150.f, 0.f},
                {150.f, 0.f},
                {122.f, 0.f},
                {94.f, 0.f},
                {66.f, 0.f},
                {38.f, 0.f},
                {10.f, 0.f},
            }, true);
            canvas->save();
            canvas->translate(0.0f, 500.0f);
            canvas->drawPath(p2, p);
            canvas->restore();
 
            // Repro for crbug.com/856137. This path previously caused GrAAConvexTessellator to turn
            // inset rings into outsets when adjacent bisector angles converged outside the previous
            // ring due to accumulated error.
            SkPath p3 = SkPath::Polygon({
                {1184.96f, 982.557f},
                {1183.71f, 982.865f},
                {1180.99f, 982.734f},
                {1178.5f,  981.541f},
                {1176.35f, 979.367f},
                {1178.94f, 938.854f},
                {1181.35f, 936.038f},
                {1183.96f, 934.117f},
                {1186.67f, 933.195f},
                {1189.36f, 933.342f},
                {1191.58f, 934.38f},
            }, true, SkPathFillType::kEvenOdd);
            canvas->save();
            SkMatrix m;
            m.setAll(0.0893210843f, 0, 79.1197586f, 0, 0.0893210843f, 300, 0, 0, 1);
            canvas->concat(m);
            canvas->drawPath(p3, p);
            canvas->restore();
        }
    }

runAsBench()

bool skiagm::ConvexLineOnlyPathsGM::runAsBench ( ) const

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 184 of file convex_all_line_paths.cpp.

{ return true; }

---

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

• third_party/skia/gm/convex_all_line_paths.cpp