static void show_stroke(SkCanvas* canvas, bool doAA, SkScalar strokeWidth, int n) {
SkRandom rand;
SkPaint paint;
paint.setAntiAlias(doAA);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(strokeWidth);
for (int i = 0; i < n; ++i) {
SkRect r;
SkPath p;
r.setXYWH(rand.nextSScalar1() * W, rand.nextSScalar1() * H,
rand.nextUScalar1() * W, rand.nextUScalar1() * H);
paint.setColor(rand.nextU());
canvas->drawRect(r, paint);
r.setXYWH(rand.nextSScalar1() * W, rand.nextSScalar1() * H,
rand.nextUScalar1() * W, rand.nextUScalar1() * H);
paint.setColor(rand.nextU());
p.addOval(r);
canvas->drawPath(p, paint);
const SkScalar minx = -SkIntToScalar(W)/4;
const SkScalar maxx = 5*SkIntToScalar(W)/4;
const SkScalar miny = -SkIntToScalar(H)/4;
const SkScalar maxy = 5*SkIntToScalar(H)/4;
paint.setColor(rand.nextU());
canvas->drawLine(randRange(rand, minx, maxx), randRange(rand, miny, maxy),
randRange(rand, minx, maxx), randRange(rand, miny, maxy),
paint);
}
}
virtual void onDraw(int loops, SkCanvas* canvas) {
const SkIPoint dim = this->getSize();
SkRandom rand;
SkPaint paint(fPaint);
this->setupPaint(&paint);
// explicitly need these
paint.setAlpha(fPaint.getAlpha());
paint.setAntiAlias(kBW != fFQ);
paint.setLCDRenderText(kLCD == fFQ);
const SkScalar x0 = SkIntToScalar(-10);
const SkScalar y0 = SkIntToScalar(-10);
paint.setTextSize(SkIntToScalar(12));
for (int i = 0; i < loops; i++) {
SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
canvas->drawString(fText, x, y, paint);
}
paint.setTextSize(SkIntToScalar(48));
for (int i = 0; i < loops / 4 ; i++) {
SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
canvas->drawString(fText, x, y, paint);
}
}
LineBench(SkScalar width, bool doAA) {
fStrokeWidth = width;
fDoAA = doAA;
fName.printf("lines_%g_%s", width, doAA ? "AA" : "BW");
SkRandom rand;
for (int i = 0; i < PTS; ++i) {
fPts[i].set(rand.nextUScalar1() * 640, rand.nextUScalar1() * 480);
}
}
static void make_tris(Rec* rec) {
int n = 10;
SkRandom rand;
rec->fMode = SkCanvas::kTriangles_VertexMode;
rec->fCount = n * 3;
rec->fVerts = new SkPoint[rec->fCount];
for (int i = 0; i < n; i++) {
SkPoint* v = &rec->fVerts[i*3];
for (int j = 0; j < 3; j++) {
v[j].set(rand.nextUScalar1() * 250, rand.nextUScalar1() * 250);
}
}
}
void randPts() {
for (size_t i = 0; i < SK_ARRAY_COUNT(fPts); i++) {
fPts[i].set(fRand.nextUScalar1() * 640,
fRand.nextUScalar1() * 480);
}
fCounter += 1;
}
void onDelayedSetup() override {
if (!fInit) {
SkRandom rand;
static const SkScalar kMinOffset = 0;
static const SkScalar kMaxOffset = 100 * SK_Scalar1;
static const SkScalar kOffsetRange = kMaxOffset - kMinOffset;
for (int i = 0; i < N; ++i) {
fRects[i].fLeft = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange);
fRects[i].fTop = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange);
fRects[i].fRight = W + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange);
fRects[i].fBottom = H + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange);
fColors[i] = rand.nextU() | 0xFF000000;
}
fInit = true;
}
}
virtual void onDraw(SkCanvas* canvas) {
const SkIPoint dim = this->getSize();
SkRandom rand;
SkPaint paint(fPaint);
this->setupPaint(&paint);
// explicitly need these
paint.setColor(fPaint.getColor());
paint.setAntiAlias(kBW != fFQ);
paint.setLCDRenderText(kLCD == fFQ);
const SkScalar x0 = SkIntToScalar(-10);
const SkScalar y0 = SkIntToScalar(-10);
if (fDoPos) {
// realistically, the matrix is often at least translated, so we
// do that since it exercises different code in drawPosText.
canvas->translate(SK_Scalar1, SK_Scalar1);
}
for (int i = 0; i < N; i++) {
if (fDoPos) {
canvas->drawPosText(fText.c_str(), fText.size(), fPos, paint);
} else {
SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
canvas->drawText(fText.c_str(), fText.size(), x, y, paint);
}
}
}
void onDraw(SkCanvas* canvas) override {
canvas->translate(20, 20);
SkRect r = SkRect::MakeWH(1000, 1000);
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(15);
const SkScalar inset = paint.getStrokeWidth() + 4;
const SkScalar sweepAngle = 345;
SkRandom rand;
SkScalar sign = 1;
while (r.width() > paint.getStrokeWidth() * 3) {
paint.setColor(sk_tool_utils::color_to_565(rand.nextU() | (0xFF << 24)));
SkScalar startAngle = rand.nextUScalar1() * 360;
SkScalar speed = SkScalarSqrt(16 / r.width()) * 0.5f;
startAngle += fRotate * 360 * speed * sign;
SkPath path;
path.addArc(r, startAngle, sweepAngle);
canvas->drawPath(path, paint);
r.inset(inset, inset);
sign = -sign;
}
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < SkBENCHLOOP(3); i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
r.offset(fRadius, fRadius);
if (fRadius > 0) {
SkMorphologyImageFilter* mf = NULL;
switch (fStyle) {
case kDilate_MT:
mf = new SkDilateImageFilter(SkScalarFloorToInt(fRadius),
SkScalarFloorToInt(fRadius));
break;
case kErode_MT:
mf = new SkErodeImageFilter(SkScalarFloorToInt(fRadius),
SkScalarFloorToInt(fRadius));
break;
}
paint.setImageFilter(mf)->unref();
}
canvas->drawOval(r, paint);
}
}
void onDrawContent(SkCanvas* canvas) override {
test_huge_stroke(canvas); return;
canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
SkPaint paint;
paint.setAntiAlias(true);
if (true) {
canvas->drawColor(SK_ColorBLACK);
paint.setTextSize(24);
paint.setColor(SK_ColorWHITE);
canvas->translate(10, 30);
static const SkBlurStyle gStyle[] = {
kNormal_SkBlurStyle,
kInner_SkBlurStyle,
kOuter_SkBlurStyle,
kSolid_SkBlurStyle,
};
for (int x = 0; x < 5; x++) {
SkScalar sigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(4));
for (int y = 0; y < 10; y++) {
if (x) {
paint.setMaskFilter(SkBlurMaskFilter::Make(gStyle[x - 1], sigma));
}
canvas->drawString("Title Bar", x*SkIntToScalar(100), y*SkIntToScalar(30), paint);
sigma *= 0.75f;
}
}
return;
}
paint.setColor(SK_ColorBLUE);
#if 1
SkPath p;
float r = rand.nextUScalar1() + 0.5f;
SkScalar x = 0, y = 0;
p.moveTo(x, y);
#if 0
p.cubicTo(x-75*r, y+75*r, x-40*r, y+125*r, x, y+85*r);
p.cubicTo(x+40*r, y+125*r, x+75*r, y+75*r, x, y);
#else
p.cubicTo(x+75*r, y+75*r, x+40*r, y+125*r, x, y+85*r);
p.cubicTo(x-40*r, y+125*r, x-75*r, y+75*r, x, y);
#endif
p.close();
fPath = p;
fPath.offset(100, 0);
#endif
fPath.setFillType(SkPath::kWinding_FillType);
drawSet(canvas, &paint);
canvas->translate(0, fPath.getBounds().height() * 5 / 4);
fPath.setFillType(SkPath::kEvenOdd_FillType);
drawSet(canvas, &paint);
}
void onDraw(const int loops, SkCanvas* canvas) override {
const char* text = "Hamburgefons";
size_t len = strlen(text);
SkISize size = canvas->getDeviceSize();
SkRandom random;
for (int i = 0; i < loops; ++i) {
SkPaint paint;
paint.setXfermode(fXfermode.get());
paint.setColor(random.nextU());
if (fAA) {
// Draw text to exercise AA code paths.
paint.setAntiAlias(true);
paint.setTextSize(random.nextRangeScalar(12, 96));
SkScalar x = random.nextRangeScalar(0, (SkScalar)size.fWidth),
y = random.nextRangeScalar(0, (SkScalar)size.fHeight);
for (int j = 0; j < 1000; ++j) {
canvas->drawText(text, len, x, y, paint);
}
} else {
// Draw rects to exercise non-AA code paths.
SkScalar w = random.nextRangeScalar(50, 100);
SkScalar h = random.nextRangeScalar(50, 100);
SkRect rect = SkRect::MakeXYWH(
random.nextUScalar1() * (size.fWidth - w),
random.nextUScalar1() * (size.fHeight - h),
w,
h
);
for (int j = 0; j < 1000; ++j) {
canvas->drawRect(rect, paint);
}
}
}
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < loops; i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
r.offset(fRadius, fRadius);
if (fRadius > 0) {
sk_sp<SkImageFilter> mf;
switch (fStyle) {
case kDilate_MT:
mf = SkDilateImageFilter::Make(SkScalarFloorToInt(fRadius),
SkScalarFloorToInt(fRadius),
nullptr);
break;
case kErode_MT:
mf = SkErodeImageFilter::Make(SkScalarFloorToInt(fRadius),
SkScalarFloorToInt(fRadius),
nullptr);
break;
}
paint.setImageFilter(std::move(mf));
}
canvas->drawOval(r, paint);
}
}
DrawAtlasDrawable(DrawAtlasProc proc, const SkRect& r)
: fProc(proc), fBounds(r), fUseColors(false)
{
SkRandom rand;
fAtlas = make_atlas(kAtlasSize, kCellSize);
const SkScalar kMaxSpeed = 5;
const SkScalar cell = SkIntToScalar(kCellSize);
int i = 0;
for (int y = 0; y < kAtlasSize; y += kCellSize) {
for (int x = 0; x < kAtlasSize; x += kCellSize) {
const SkScalar sx = SkIntToScalar(x);
const SkScalar sy = SkIntToScalar(y);
fTex[i].setXYWH(sx, sy, cell, cell);
fRec[i].fCenter.set(sx + cell/2, sy + 3*cell/4);
fRec[i].fVelocity.fX = rand.nextSScalar1() * kMaxSpeed;
fRec[i].fVelocity.fY = rand.nextSScalar1() * kMaxSpeed;
fRec[i].fScale = 1;
fRec[i].fDScale = rand.nextSScalar1() / 16;
fRec[i].fRadian = 0;
fRec[i].fDRadian = rand.nextSScalar1() / 8;
fRec[i].fAlpha = rand.nextUScalar1();
fRec[i].fDAlpha = rand.nextSScalar1() / 10;
i += 1;
}
}
}
void onDraw(SkCanvas* canvas) override {
SkPath path;
SkRandom rand;
int scale = 300;
for (int i = 0; i < 4; ++i) {
// get the random values deterministically
SkScalar randoms[12];
for (int index = 0; index < (int) SK_ARRAY_COUNT(randoms); ++index) {
randoms[index] = rand.nextUScalar1();
}
path.lineTo(randoms[0] * scale, randoms[1] * scale);
path.quadTo(randoms[2] * scale, randoms[3] * scale,
randoms[4] * scale, randoms[5] * scale);
path.cubicTo(randoms[6] * scale, randoms[7] * scale,
randoms[8] * scale, randoms[9] * scale,
randoms[10] * scale, randoms[11] * scale);
}
path.setFillType(SkPath::kEvenOdd_FillType);
path.offset(SkIntToScalar(20), SkIntToScalar(20));
test_hittest(canvas, path);
canvas->translate(SkIntToScalar(scale), 0);
path.setFillType(SkPath::kWinding_FillType);
test_hittest(canvas, path);
}
static void test_memory_pool(skiatest::Reporter* reporter) {
// prealloc and min alloc sizes for the pool
static const size_t gSizes[][2] = {
{0, 0},
{10 * sizeof(A), 20 * sizeof(A)},
{100 * sizeof(A), 100 * sizeof(A)},
{500 * sizeof(A), 500 * sizeof(A)},
{10000 * sizeof(A), 0},
{1, 100 * sizeof(A)},
};
// different percentages of creation vs deletion
static const float gCreateFraction[] = {1.f, .95f, 0.75f, .5f};
// number of create/destroys per test
static const int kNumIters = 20000;
// check that all the values stored in A objects are correct after this
// number of iterations
static const int kCheckPeriod = 500;
SkRandom r;
for (size_t s = 0; s < SK_ARRAY_COUNT(gSizes); ++s) {
A::SetAllocator(gSizes[s][0], gSizes[s][1]);
for (size_t c = 0; c < SK_ARRAY_COUNT(gCreateFraction); ++c) {
SkTDArray<Rec> instanceRecs;
for (int i = 0; i < kNumIters; ++i) {
float createOrDestroy = r.nextUScalar1();
if (createOrDestroy < gCreateFraction[c] ||
0 == instanceRecs.count()) {
Rec* rec = instanceRecs.append();
rec->fInstance = A::Create(&r);
rec->fValue = static_cast<int>(r.nextU());
rec->fInstance->setValues(rec->fValue);
} else {
int d = r.nextRangeU(0, instanceRecs.count() - 1);
Rec& rec = instanceRecs[d];
REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
delete rec.fInstance;
instanceRecs.removeShuffle(d);
}
if (0 == i % kCheckPeriod) {
for (int r = 0; r < instanceRecs.count(); ++r) {
Rec& rec = instanceRecs[r];
REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
}
}
}
for (int i = 0; i < instanceRecs.count(); ++i) {
Rec& rec = instanceRecs[i];
REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
delete rec.fInstance;
}
#ifdef SK_ENABLE_INST_COUNT
REPORTER_ASSERT(reporter, !A::GetInstanceCount());
#endif
}
}
}
virtual void onDraw(int loops, SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < loops; i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
paint.setImageFilter(fFilter);
canvas->drawOval(r, paint);
}
}
static void show_fill(SkCanvas* canvas, bool doAA) {
SkRandom rand;
SkPaint paint;
paint.setAntiAlias(doAA);
for (int i = 0; i < 50; ++i) {
SkRect r;
SkPath p;
r.setXYWH(rand.nextSScalar1() * W, rand.nextSScalar1() * H,
rand.nextUScalar1() * W, rand.nextUScalar1() * H);
paint.setColor(rand.nextU());
canvas->drawRect(r, paint);
r.setXYWH(rand.nextSScalar1() * W, rand.nextSScalar1() * H,
rand.nextUScalar1() * W, rand.nextUScalar1() * H);
paint.setColor(rand.nextU());
p.addOval(r);
canvas->drawPath(p, paint);
}
}
DEF_TEST(Color4f_premul, reporter) {
SkRandom rand;
for (int i = 0; i < 1000000; ++i) {
// First just test opaque colors, so that the premul should be exact
SkColor4f c4 {
1, rand.nextUScalar1(), rand.nextUScalar1(), rand.nextUScalar1()
};
SkPM4f pm4 = c4.premul();
REPORTER_ASSERT(reporter, pm4.a() == c4.fA);
REPORTER_ASSERT(reporter, pm4.r() == c4.fA * c4.fR);
REPORTER_ASSERT(reporter, pm4.g() == c4.fA * c4.fG);
REPORTER_ASSERT(reporter, pm4.b() == c4.fA * c4.fB);
// We compare with a tolerance, in case our premul multiply is implemented at slightly
// different precision than the test code.
c4.fA = rand.nextUScalar1();
pm4 = c4.premul();
REPORTER_ASSERT(reporter, pm4.fVec[SK_A_INDEX] == c4.fA);
REPORTER_ASSERT(reporter, nearly_equal(pm4.r(), c4.fA * c4.fR));
REPORTER_ASSERT(reporter, nearly_equal(pm4.g(), c4.fA * c4.fG));
REPORTER_ASSERT(reporter, nearly_equal(pm4.b(), c4.fA * c4.fB));
}
}
SkRect draw(SkCanvas* canvas, const SkPaint& paint) override {
SkRandom random;
SkPoint points[500];
SkRect bounds = SkRect::MakeWH(50, 50);
int count = SkToInt(SK_ARRAY_COUNT(points));
if (SkCanvas::kPoints_PointMode != fMode) {
count = SkTMin(count, 10);
}
for (int p = 0; p < count; ++p) {
points[p].fX = random.nextUScalar1() * bounds.width();
points[p].fY = random.nextUScalar1() * bounds.width();
}
canvas->drawPoints(fMode, count, points, paint);
return bounds;
}
static void rand_op(SkCanvas* canvas, SkRandom& rand) {
SkPaint paint;
SkRect rect = SkRect::MakeWH(50, 50);
SkScalar unit = rand.nextUScalar1();
if (unit <= 0.3) {
// SkDebugf("save\n");
canvas->save();
} else if (unit <= 0.6) {
// SkDebugf("restore\n");
canvas->restore();
} else if (unit <= 0.9) {
// SkDebugf("clip\n");
canvas->clipRect(rect);
} else {
// SkDebugf("draw\n");
canvas->drawPaint(paint);
}
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < loops; i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
r.offset(fRadius, fRadius);
if (fRadius > 0) {
paint.setMaskFilter(SkMaskFilter::MakeBlur(fStyle,
SkBlurMask::ConvertRadiusToSigma(fRadius)));
}
canvas->drawOval(r, paint);
}
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < SkBENCHLOOP(10); i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
r.offset(fRadius, fRadius);
if (fRadius > 0) {
SkMaskFilter* mf = SkBlurMaskFilter::Create(fRadius, fStyle, 0);
paint.setMaskFilter(mf)->unref();
}
canvas->drawOval(r, paint);
}
}
static void test_conic(skiatest::Reporter* reporter) {
SkRandom rand;
for (int i = 0; i < 1000; ++i) {
SkPoint pts[3];
for (int j = 0; j < 3; ++j) {
pts[j].set(rand.nextSScalar1() * 100, rand.nextSScalar1() * 100);
}
for (int k = 0; k < 10; ++k) {
SkScalar w = rand.nextUScalar1() * 2;
SkConic conic(pts, w);
const SkScalar dt = SK_Scalar1 / 128;
SkScalar t = dt;
for (int j = 1; j < 128; ++j) {
test_conic_eval_pos(reporter, conic, t);
test_conic_eval_tan(reporter, conic, t);
t += dt;
}
}
}
}
virtual void onDraw(const int loops, SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < loops; i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
r.offset(fRadius, fRadius);
if (fRadius > 0) {
SkMaskFilter* mf = SkBlurMaskFilter::Create(fStyle,
SkBlurMask::ConvertRadiusToSigma(fRadius),
fFlags);
paint.setMaskFilter(mf)->unref();
}
canvas->drawOval(r, paint);
}
}
virtual void onDraw(SkCanvas* canvas) {
SkIPoint dim = this->getSize();
SkRandom rand;
SkPaint paint(fPaint);
this->setupPaint(&paint);
const SkBitmap& bitmap = fBitmap;
const SkScalar x0 = SkIntToScalar(-bitmap.width() / 2);
const SkScalar y0 = SkIntToScalar(-bitmap.height() / 2);
for (int i = 0; i < N; i++) {
SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
if (fForceUpdate)
bitmap.notifyPixelsChanged();
canvas->drawBitmap(bitmap, x, y, &paint);
}
}
virtual void onDraw(SkCanvas* canvas) {
SkPath path;
SkRandom rand;
int scale = 300;
for (int i = 0; i < 4; ++i) {
path.lineTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale);
path.quadTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale,
rand.nextUScalar1() * scale, rand.nextUScalar1() * scale);
path.cubicTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale,
rand.nextUScalar1() * scale, rand.nextUScalar1() * scale,
rand.nextUScalar1() * scale, rand.nextUScalar1() * scale);
}
path.setFillType(SkPath::kEvenOdd_FillType);
path.offset(SkIntToScalar(20), SkIntToScalar(20));
test_hittest(canvas, path);
canvas->translate(SkIntToScalar(scale), 0);
path.setFillType(SkPath::kWinding_FillType);
test_hittest(canvas, path);
}
virtual void onDraw(SkCanvas* canvas) {
drawBG(canvas);
//return;
canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
SkPaint paint;
paint.setAntiAlias(true);
if (true) {
canvas->drawColor(SK_ColorBLACK);
paint.setTextSize(24);
paint.setColor(SK_ColorWHITE);
canvas->translate(10, 30);
static const SkBlurMaskFilter::BlurStyle gStyle[] = {
SkBlurMaskFilter::kNormal_BlurStyle,
SkBlurMaskFilter::kInner_BlurStyle,
SkBlurMaskFilter::kOuter_BlurStyle,
SkBlurMaskFilter::kSolid_BlurStyle,
};
for (int x = 0; x < 5; x++) {
SkMaskFilter* mf;
SkScalar radius = 4;
for (int y = 0; y < 10; y++) {
if (x) {
mf = SkBlurMaskFilter::Create(radius, gStyle[x - 1]);
paint.setMaskFilter(mf)->unref();
}
canvas->drawText("Title Bar", 9, x*100, y*30, paint);
radius *= 0.75f;
}
}
return;
}
paint.setColor(SK_ColorBLUE);
#if 1
SkPath p;
float r = rand.nextUScalar1() + 0.5f;
SkScalar x = 0, y = 0;
p.moveTo(x, y);
#if 0
p.cubicTo(x-75*r, y+75*r, x-40*r, y+125*r, x, y+85*r);
p.cubicTo(x+40*r, y+125*r, x+75*r, y+75*r, x, y);
#else
p.cubicTo(x+75*r, y+75*r, x+40*r, y+125*r, x, y+85*r);
p.cubicTo(x-40*r, y+125*r, x-75*r, y+75*r, x, y);
#endif
p.close();
fPath = p;
fPath.offset(100, 0);
#endif
fPath.setFillType(SkPath::kWinding_FillType);
drawSet(canvas, &paint);
canvas->translate(0, fPath.getBounds().height() * 5 / 4);
fPath.setFillType(SkPath::kEvenOdd_FillType);
drawSet(canvas, &paint);
}
static int R(float x) {
return (int)floor(SkScalarToFloat(gRand.nextUScalar1()) * x);
}
static SkScalar nextScalarRange(SkRandom& rand, SkScalar min, SkScalar max)
{
return min + SkScalarMul(rand.nextUScalar1(), max - min);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(-1);
canvas->save();
canvas->scale(1000 * SK_Scalar1, 1000 * SK_Scalar1);
SkRandom rand;
SkPath curves;
SkPath hulls;
SkPath ctrlPts;
for (int i = 0; i < 100; ++i) {
SkScalar pts[] = {
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1()
};
curves.moveTo(pts[0], pts[1]);
curves.cubicTo(pts[2], pts[3],
pts[4], pts[5],
pts[6], pts[7]);
hulls.moveTo(pts[0], pts[1]);
hulls.lineTo(pts[2], pts[3]);
hulls.lineTo(pts[4], pts[5]);
hulls.lineTo(pts[6], pts[7]);
ctrlPts.addCircle(pts[0], pts[1], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[2], pts[3], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[4], pts[5], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[6], pts[7], SK_Scalar1 / 200);
}
for (int i = 0; i < 100; ++i) {
SkScalar pts[] = {
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
};
curves.moveTo(pts[0], pts[1]);
curves.quadTo(pts[2], pts[3],
pts[4], pts[5]);
hulls.moveTo(pts[0], pts[1]);
hulls.lineTo(pts[2], pts[3]);
hulls.lineTo(pts[4], pts[5]);
ctrlPts.addCircle(pts[0], pts[1], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[2], pts[3], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[4], pts[5], SK_Scalar1 / 200);
}
for (int i = 0; i < 100; ++i) {
SkScalar pts[] = {
rand.nextUScalar1(), rand.nextUScalar1(),
rand.nextUScalar1(), rand.nextUScalar1(),
};
curves.moveTo(pts[0], pts[1]);
curves.lineTo(pts[2], pts[3]);
ctrlPts.addCircle(pts[0], pts[1], SK_Scalar1 / 200);
ctrlPts.addCircle(pts[2], pts[3], SK_Scalar1 / 200);
}
paint.setColor(SK_ColorBLACK);
canvas->drawPath(curves, paint);
paint.setColor(SK_ColorRED);
//canvas->drawPath(hulls, paint);
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(SK_ColorBLUE);
//canvas->drawPath(ctrlPts, paint);
canvas->restore();
}
