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Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
DashCircle2GM Class Reference
Inheritance diagram for DashCircle2GM:
skiagm::GM

Public Member Functions

 DashCircle2GM ()
 
- 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)
 
virtual bool runAsBench () const
 
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
 
void onDraw (SkCanvas *canvas) override
 
bool onAnimate (double nanos) 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 onGetControls (SkMetaData *)
 
virtual void onSetControls (const SkMetaData &)
 
GraphiteTestContext * graphiteTestContext () const
 

Protected Attributes

SkScalar fPhaseDegrees = 12.f
 

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 122 of file dashcircle.cpp.

Constructor & Destructor Documentation

◆ DashCircle2GM()

DashCircle2GM::DashCircle2GM ( )
inline

Definition at line 124 of file dashcircle.cpp.

124{}

Member Function Documentation

◆ getISize()

SkISize DashCircle2GM::getISize ( )
inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 129 of file dashcircle.cpp.

129{ return SkISize::Make(635, 900); }
SkISize::Make
static constexpr SkISize Make(int32_t w, int32_t h)
Definition SkSize.h:20

◆ getName()

SkString DashCircle2GM::getName ( ) const
inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 127 of file dashcircle.cpp.

127{ return SkString("dashcircle2"); }

◆ onAnimate()

bool DashCircle2GM::onAnimate ( double  nanos)
inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 228 of file dashcircle.cpp.

228 {
229 fPhaseDegrees = 1e-9 * nanos;
230 return true;
231 }
DashCircle2GM::fPhaseDegrees
SkScalar fPhaseDegrees
Definition dashcircle.cpp:234
protoc_wrapper.e
e
Definition protoc_wrapper.py:226

◆ onDraw()

void DashCircle2GM::onDraw ( SkCanvas *  canvas)
inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 131 of file dashcircle.cpp.

131 {
132 // These intervals are defined relative to tau.
133 static constexpr SkScalar kIntervals[][2]{
134 {0.333f, 0.333f},
135 {0.015f, 0.015f},
136 {0.01f , 0.09f },
137 {0.097f, 0.003f},
138 {0.02f , 0.04f },
139 {0.1f , 0.2f },
140 {0.25f , 0.25f },
141 {0.6f , 0.7f }, // adds to > 1
142 {1.2f , 0.8f }, // on is > 1
143 {0.1f , 1.1f }, // off is > 1*/
144 };
145
146 static constexpr int kN = std::size(kIntervals);
147 static constexpr SkScalar kRadius = 20.f;
148 static constexpr SkScalar kStrokeWidth = 15.f;
149 static constexpr SkScalar kPad = 5.f;
150 static constexpr SkRect kCircle = {-kRadius, -kRadius, kRadius, kRadius};
151
152 static constexpr SkScalar kThinRadius = kRadius * 1.5;
153 static constexpr SkRect kThinCircle = {-kThinRadius, -kThinRadius,
154 kThinRadius, kThinRadius};
155 static constexpr SkScalar kThinStrokeWidth = 0.4f;
156
157 sk_sp<SkPathEffect> deffects[std::size(kIntervals)];
158 sk_sp<SkPathEffect> thinDEffects[std::size(kIntervals)];
159 for (int i = 0; i < kN; ++i) {
160 static constexpr SkScalar kTau = 2 * SK_ScalarPI;
161 static constexpr SkScalar kCircumference = kRadius * kTau;
162 SkScalar scaledIntervals[2] = {kCircumference * kIntervals[i][0],
163 kCircumference * kIntervals[i][1]};
164 deffects[i] = SkDashPathEffect::Make(
165 scaledIntervals, 2, kCircumference * fPhaseDegrees * kTau / 360.f);
166 static constexpr SkScalar kThinCircumference = kThinRadius * kTau;
167 scaledIntervals[0] = kThinCircumference * kIntervals[i][0];
168 scaledIntervals[1] = kThinCircumference * kIntervals[i][1];
169 thinDEffects[i] = SkDashPathEffect::Make(
170 scaledIntervals, 2, kThinCircumference * fPhaseDegrees * kTau / 360.f);
171 }
172
173 SkMatrix rotate;
174 rotate.setRotate(25.f);
175 const SkMatrix kMatrices[]{
176 SkMatrix::I(),
177 SkMatrix::Scale(1.2f, 1.2f),
178 SkMatrix::MakeAll(1, 0, 0, 0, -1, 0, 0, 0, 1), // y flipper
179 SkMatrix::MakeAll(-1, 0, 0, 0, 1, 0, 0, 0, 1), // x flipper
180 SkMatrix::Scale(0.7f, 0.7f),
181 rotate,
182 SkMatrix::Concat(
183 SkMatrix::Concat(SkMatrix::MakeAll(-1, 0, 0, 0, 1, 0, 0, 0, 1), rotate),
184 rotate)
185 };
186
187 SkPaint paint;
188 paint.setAntiAlias(true);
189 paint.setStrokeWidth(kStrokeWidth);
190 paint.setStroke(true);
191
192 // Compute the union of bounds of all of our test cases.
193 SkRect bounds = SkRect::MakeEmpty();
194 const SkRect kBounds = kThinCircle.makeOutset(kThinStrokeWidth / 2.f,
195 kThinStrokeWidth / 2.f);
196 for (const auto& m : kMatrices) {
197 SkRect devBounds;
198 m.mapRect(&devBounds, kBounds);
199 bounds.join(devBounds);
200 }
201
202 canvas->save();
203 canvas->translate(-bounds.fLeft + kPad, -bounds.fTop + kPad);
204 for (size_t i = 0; i < std::size(deffects); ++i) {
205 canvas->save();
206 for (const auto& m : kMatrices) {
207 canvas->save();
208 canvas->concat(m);
209
210 paint.setPathEffect(deffects[i]);
211 paint.setStrokeWidth(kStrokeWidth);
212 canvas->drawOval(kCircle, paint);
213
214 paint.setPathEffect(thinDEffects[i]);
215 paint.setStrokeWidth(kThinStrokeWidth);
216 canvas->drawOval(kThinCircle, paint);
217
218 canvas->restore();
219 canvas->translate(bounds.width() + kPad, 0);
220 }
221 canvas->restore();
222 canvas->translate(0, bounds.height() + kPad);
223 }
224 canvas->restore();
225 }
rotate
static bool rotate(const SkDCubic &cubic, int zero, int index, SkDCubic &rotPath)
Definition SkOpCubicHull.cpp:14
SK_ScalarPI
#define SK_ScalarPI
Definition SkScalar.h:21
kPad
constexpr int kPad
Definition bc1_transparency.cpp:24
SkCanvas::drawOval
void drawOval(const SkRect &oval, const SkPaint &paint)
Definition SkCanvas.cpp:2022
SkCanvas::restore
void restore()
Definition SkCanvas.cpp:465
SkCanvas::translate
void translate(SkScalar dx, SkScalar dy)
Definition SkCanvas.cpp:1602
SkCanvas::save
int save()
Definition SkCanvas.cpp:451
SkCanvas::concat
void concat(const SkMatrix &matrix)
Definition SkCanvas.cpp:1642
SkDashPathEffect::Make
static sk_sp< SkPathEffect > Make(const SkScalar intervals[], int count, SkScalar phase)
Definition SkDashPathEffect.cpp:409
SkMatrix::Scale
static SkMatrix Scale(SkScalar sx, SkScalar sy)
Definition SkMatrix.h:75
SkMatrix::MakeAll
static SkMatrix MakeAll(SkScalar scaleX, SkScalar skewX, SkScalar transX, SkScalar skewY, SkScalar scaleY, SkScalar transY, SkScalar pers0, SkScalar pers1, SkScalar pers2)
Definition SkMatrix.h:179
SkMatrix::Concat
static SkMatrix Concat(const SkMatrix &a, const SkMatrix &b)
Definition SkMatrix.h:1775
SkMatrix::setRotate
SkMatrix & setRotate(SkScalar degrees, SkScalar px, SkScalar py)
Definition SkMatrix.cpp:452
SkMatrix::I
static const SkMatrix & I()
Definition SkMatrix.cpp:1544
sk_sp
Definition SkRefCnt.h:220
paint
const Paint & paint
Definition color_source.cc:38
SkScalar
float SkScalar
Definition extension.cpp:12
SkRecords::bounds
Optional< SkRect > bounds
Definition SkRecords.h:189
dart_profiler_symbols.m
m
Definition dart_profiler_symbols.py:64
kStrokeWidth
constexpr SkScalar kStrokeWidth
Definition strokedlines.cpp:42
kRadius
constexpr int kRadius
Definition strokedlines.cpp:39
SkRect::MakeEmpty
static constexpr SkRect MakeEmpty()
Definition SkRect.h:595
SkRect::makeOutset
SkRect makeOutset(float dx, float dy) const
Definition SkRect.h:1002

Member Data Documentation

◆ fPhaseDegrees

SkScalar DashCircle2GM::fPhaseDegrees = 12.f
protected

Definition at line 234 of file dashcircle.cpp.

The documentation for this class was generated from the following file:
Generated on Fri Apr 26 2024 06:19:14 for Flutter Engine by doxygen 1.9.8