DEF_TEST(contour_measure, reporter) {
SkPath path;
path.addCircle(0, 0, 100);
path.addCircle(0, 0, 10);
SkContourMeasureIter fact(path, false);
path.reset(); // we should not need the path avert we created the factory
auto cm0 = fact.next();
auto cm1 = fact.next();
REPORTER_ASSERT(reporter, cm0->isClosed());
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(cm0->length(), 200 * SK_ScalarPI, 1.5f));
test_90_degrees(cm0, 100, reporter);
REPORTER_ASSERT(reporter, cm1->isClosed());
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(cm1->length(), 20 * SK_ScalarPI, 0.5f));
test_90_degrees(cm1, 10, reporter);
auto cm2 = fact.next();
REPORTER_ASSERT(reporter, !cm2);
test_empty_contours(reporter);
test_MLM_contours(reporter);
}
void draw_fill(SkCanvas* canvas, const SkRect& rect, SkScalar width) {
if (rect.isEmpty()) {
return;
}
SkPaint paint;
paint.setColor(0x1f1f0f0f);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(width);
SkPath path;
SkScalar maxSide = SkTMax(rect.width(), rect.height()) / 2;
SkPoint center = { rect.fLeft + maxSide, rect.fTop + maxSide };
path.addCircle(center.fX, center.fY, maxSide);
canvas->drawPath(path, paint);
paint.setStyle(SkPaint::kFill_Style);
path.reset();
path.addCircle(center.fX, center.fY, maxSide - width / 2);
paint.setColor(0x3f0f1f3f);
canvas->drawPath(path, paint);
path.reset();
path.setFillType(SkPath::kEvenOdd_FillType);
path.addCircle(center.fX, center.fY, maxSide + width / 2);
SkRect outside = SkRect::MakeXYWH(center.fX - maxSide - width, center.fY - maxSide - width,
(maxSide + width) * 2, (maxSide + width) * 2);
path.addRect(outside);
canvas->drawPath(path, paint);
}
void makePath() {
if (fPath.isEmpty()) {
const SkScalar radius = SkIntToScalar(45);
fPath.addCircle(SkIntToScalar(50), SkIntToScalar(50), radius);
fPath.addCircle(SkIntToScalar(100), SkIntToScalar(100), radius);
}
}
FillTypeView() {
const SkScalar radius = SkIntToScalar(45);
fPath.addCircle(SkIntToScalar(50), SkIntToScalar(50), radius);
fPath.addCircle(SkIntToScalar(100), SkIntToScalar(100), radius);
this->setBGColor(0xFFDDDDDD);
}
void onOnceBeforeDraw() override {
fX1 = 80;
fX2 = 120;
fY = 50;
fR = 40;
fCircle1.addCircle(fX1, fY, fR, SkPath::kCW_Direction);
fCircle2.addCircle(fX2, fY, fR, SkPath::kCW_Direction);
}
virtual void onDraw(SkCanvas* canvas) {
SkPath path;
path.addCircle(SkIntToScalar(50), SkIntToScalar(50), SkIntToScalar(40));
path.toggleInverseFillType();
SkRect clipR = { 0, 0, SkIntToScalar(100), SkIntToScalar(200) };
canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
for (int doclip = 0; doclip <= 1; ++doclip) {
for (int aa = 0; aa <= 1; ++aa) {
SkPaint paint;
paint.setAntiAlias(SkToBool(aa));
canvas->save();
canvas->clipRect(clipR);
const SkRect* clipPtr = doclip ? &clipR : NULL;
show(canvas, path, paint, clipPtr, clipR.fTop, clipR.centerY());
show(canvas, path, paint, clipPtr, clipR.centerY(), clipR.fBottom);
canvas->restore();
canvas->translate(SkIntToScalar(110), 0);
}
}
}
static void TestOverflowHitTest() {
SkPath path;
#ifdef SK_SCALAR_IS_FLOATx
path.addCircle(0, 0, 70000, SkPath::kCCW_Direction);
SkASSERT(HitTestPath(path, 40000, 40000));
#endif
}
SkRect draw(SkCanvas* canvas, const SkPaint& paint) override {
SkPath path;
path.addCircle(15, 15, 10);
path.addOval(SkRect::MakeXYWH(2, 2, 22, 37));
path.setFillType(SkPath::kEvenOdd_FillType);
canvas->drawPath(path, paint);
return path.getBounds();
}
static void TestOverflowHitTest() {
SkPath path;
#ifdef SK_SCALAR_IS_FLOATx // FIXME: unclear when if ever this can be enabled
path.addCircle(0, 0, 70000, SkPath::kCCW_Direction);
SkASSERT(HitTestPath(path, 40000, 40000));
#endif
}
virtual void onDraw(SkCanvas* canvas) {
SkMatrix m;
m.reset();
m.setRotate(33 * SK_Scalar1);
m.postScale(3000 * SK_Scalar1, 3000 * SK_Scalar1);
m.postTranslate(6000 * SK_Scalar1, -5000 * SK_Scalar1);
canvas->concat(m);
SkPaint paint;
paint.setColor(SK_ColorRED);
paint.setAntiAlias(true);
bool success = m.invert(&m);
SkASSERT(success);
(void) success; // silence compiler :(
SkPath path;
SkPoint pt = {10 * SK_Scalar1, 10 * SK_Scalar1};
SkScalar small = 1 / (500 * SK_Scalar1);
m.mapPoints(&pt, 1);
path.addCircle(pt.fX, pt.fY, small);
canvas->drawPath(path, paint);
pt.set(30 * SK_Scalar1, 10 * SK_Scalar1);
m.mapPoints(&pt, 1);
SkRect rect = {pt.fX - small, pt.fY - small,
pt.fX + small, pt.fY + small};
canvas->drawRect(rect, paint);
SkBitmap bmp;
bmp.setConfig(SkBitmap::kARGB_8888_Config, 2, 2);
bmp.allocPixels();
bmp.lockPixels();
uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp.getPixels());
pixels[0] = SkPackARGB32(0xFF, 0xFF, 0x00, 0x00);
pixels[1] = SkPackARGB32(0xFF, 0x00, 0xFF, 0x00);
pixels[2] = SkPackARGB32(0x80, 0x00, 0x00, 0x00);
pixels[3] = SkPackARGB32(0xFF, 0x00, 0x00, 0xFF);
bmp.unlockPixels();
pt.set(30 * SK_Scalar1, 30 * SK_Scalar1);
m.mapPoints(&pt, 1);
SkShader* shader = SkShader::CreateBitmapShader(
bmp,
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode);
SkMatrix s;
s.reset();
s.setScale(SK_Scalar1 / 1000, SK_Scalar1 / 1000);
shader->setLocalMatrix(s);
paint.setShader(shader)->unref();
paint.setAntiAlias(false);
paint.setFilterLevel(SkPaint::kLow_FilterLevel);
rect.setLTRB(pt.fX - small, pt.fY - small,
pt.fX + small, pt.fY + small);
canvas->drawRect(rect, paint);
}
static SkPathEffect* MakeTileEffect() {
SkMatrix m;
m.setScale(SkIntToScalar(12), SkIntToScalar(12));
SkPath path;
path.addCircle(0, 0, SkIntToScalar(5));
return SkPath2DPathEffect::Create(m, path);
}
static sk_sp<SkPathEffect> make_tile_effect() {
SkMatrix m;
m.setScale(1.f, 1.f);
SkPath path;
path.addCircle(0, 0, SkIntToScalar(5));
return SkPath2DPathEffect::Make(m, path);
}
virtual void onDraw(SkCanvas* canvas) {
SkScalar x = SkIntToScalar(100);
SkScalar y = SkIntToScalar(88);
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(100));
paint.setStrokeWidth(SkIntToScalar(5));
SkTypeface* face = SkTypeface::CreateFromName("Papyrus", SkTypeface::kNormal);
SkSafeUnref(paint.setTypeface(face));
show_bold(canvas, "Hello", 5, x, y, paint);
face = SkTypeface::CreateFromName("Hiragino Maru Gothic Pro", SkTypeface::kNormal);
SkSafeUnref(paint.setTypeface(face));
const unsigned char hyphen[] = { 0xE3, 0x83, 0xBC };
show_bold(canvas, hyphen, SK_ARRAY_COUNT(hyphen), x + SkIntToScalar(300), y, paint);
paint.setStyle(SkPaint::kStrokeAndFill_Style);
SkPath path;
path.setFillType(SkPath::kWinding_FillType);
path.addCircle(x, y + SkIntToScalar(200), SkIntToScalar(50), SkPath::kCW_Direction);
path.addCircle(x, y + SkIntToScalar(200), SkIntToScalar(40), SkPath::kCCW_Direction);
canvas->drawPath(path, paint);
SkPath path2;
path2.setFillType(SkPath::kWinding_FillType);
path2.addCircle(x + SkIntToScalar(120), y + SkIntToScalar(200), SkIntToScalar(50), SkPath::kCCW_Direction);
path2.addCircle(x + SkIntToScalar(120), y + SkIntToScalar(200), SkIntToScalar(40), SkPath::kCW_Direction);
canvas->drawPath(path2, paint);
path2.reset();
path2.addCircle(x + SkIntToScalar(240), y + SkIntToScalar(200), SkIntToScalar(50), SkPath::kCCW_Direction);
canvas->drawPath(path2, paint);
SkASSERT(path2.cheapIsDirection(SkPath::kCCW_Direction));
path2.reset();
SkASSERT(!path2.cheapComputeDirection(NULL));
path2.addCircle(x + SkIntToScalar(360), y + SkIntToScalar(200), SkIntToScalar(50), SkPath::kCW_Direction);
SkASSERT(path2.cheapIsDirection(SkPath::kCW_Direction));
canvas->drawPath(path2, paint);
}
StrokePathView() {
// test_blur();
fWidth = SkIntToScalar(120);
#if 0
const char str[] =
"M 0, 3"
"C 10, -10, 30, -10, 0, 28"
"C -30, -10, -10, -10, 0, 3"
"Z";
SkParsePath::FromSVGString(str, &fPath);
#else
fPath.addCircle(0, 0, SkIntToScalar(50), SkPath::kCW_Direction);
fPath.addCircle(0, SkIntToScalar(-50), SkIntToScalar(30), SkPath::kCW_Direction);
#endif
scale_to_width(&fPath, fWidth);
const SkRect& bounds = fPath.getBounds();
fPath.offset(-bounds.fLeft, -bounds.fTop);
}
void SkPathStroker::quadTo(const SkPoint& pt1, const SkPoint& pt2) {
bool degenerateAB = SkPath::IsLineDegenerate(fPrevPt, pt1);
bool degenerateBC = SkPath::IsLineDegenerate(pt1, pt2);
if (degenerateAB | degenerateBC) {
if (degenerateAB ^ degenerateBC) {
this->lineTo(pt2);
}
return;
}
SkVector normalAB, unitAB, normalBC, unitBC;
this->preJoinTo(pt1, &normalAB, &unitAB, false);
{
SkPoint pts[3], tmp[5];
pts[0] = fPrevPt;
pts[1] = pt1;
pts[2] = pt2;
if (SkChopQuadAtMaxCurvature(pts, tmp) == 2) {
unitBC.setNormalize(pts[2].fX - pts[1].fX, pts[2].fY - pts[1].fY);
unitBC.rotateCCW();
if (normals_too_pinchy(unitAB, unitBC)) {
normalBC = unitBC;
normalBC.scale(fRadius);
fOuter.lineTo(tmp[2].fX + normalAB.fX, tmp[2].fY + normalAB.fY);
fOuter.lineTo(tmp[2].fX + normalBC.fX, tmp[2].fY + normalBC.fY);
fOuter.lineTo(tmp[4].fX + normalBC.fX, tmp[4].fY + normalBC.fY);
fInner.lineTo(tmp[2].fX - normalAB.fX, tmp[2].fY - normalAB.fY);
fInner.lineTo(tmp[2].fX - normalBC.fX, tmp[2].fY - normalBC.fY);
fInner.lineTo(tmp[4].fX - normalBC.fX, tmp[4].fY - normalBC.fY);
fExtra.addCircle(tmp[2].fX, tmp[2].fY, fRadius,
SkPath::kCW_Direction);
} else {
this->quad_to(&tmp[0], normalAB, unitAB, &normalBC, &unitBC,
kMaxQuadSubdivide);
SkVector n = normalBC;
SkVector u = unitBC;
this->quad_to(&tmp[2], n, u, &normalBC, &unitBC,
kMaxQuadSubdivide);
}
} else {
this->quad_to(pts, normalAB, unitAB, &normalBC, &unitBC,
kMaxQuadSubdivide);
}
}
this->postJoinTo(pt2, normalBC, unitBC);
}
AAClipRegionBench(void* param) : INHERITED(param) {
SkPath path;
// test conversion of a complex clip to a aaclip
path.addCircle(0, 0, SkIntToScalar(200));
path.addCircle(0, 0, SkIntToScalar(180));
// evenodd means we've constructed basically a stroked circle
path.setFillType(SkPath::kEvenOdd_FillType);
SkIRect bounds;
path.getBounds().roundOut(&bounds);
fRegion.setPath(path, SkRegion(bounds));
}
DEF_TEST(BuilderIssue3838_2, reporter) {
SkPath path;
path.addCircle(100, 100, 50);
SkOpBuilder builder;
builder.add(path, kUnion_SkPathOp);
builder.add(path, kUnion_SkPathOp);
SkPath result;
builder.resolve(&result);
int pixelDiff = comparePaths(reporter, __FUNCTION__, path, result);
REPORTER_ASSERT(reporter, pixelDiff == 0);
}
void onOnceBeforeDraw() override {
// test_blur();
fWidth = SkIntToScalar(120);
#if 0
const char str[] =
"M 0, 3"
"C 10, -10, 30, -10, 0, 28"
"C -30, -10, -10, -10, 0, 3"
"Z";
SkParsePath::FromSVGString(str, &fPath);
#else
fPath.addCircle(0, 0, SkIntToScalar(50), SkPath::kCW_Direction);
fPath.addCircle(0, SkIntToScalar(-50), SkIntToScalar(30), SkPath::kCW_Direction);
#endif
scale_to_width(&fPath, fWidth);
const SkRect& bounds = fPath.getBounds();
fPath.offset(-bounds.fLeft, -bounds.fTop);
this->setBGColor(0xFFDDDDDD);
}
PathTexture* CircleShapeCache::getCircle(float radius, SkPaint* paint) {
CircleShapeCacheEntry entry(radius, paint);
PathTexture* texture = get(entry);
if (!texture) {
SkPath path;
path.addCircle(radius, radius, radius, SkPath::kCW_Direction);
texture = addTexture(entry, &path, paint);
}
return texture;
}
static void test_convexity(skiatest::Reporter* reporter) {
static const SkPath::Convexity C = SkPath::kConcave_Convexity;
static const SkPath::Convexity V = SkPath::kConvex_Convexity;
SkPath path;
REPORTER_ASSERT(reporter, V == SkPath::ComputeConvexity(path));
path.addCircle(0, 0, 10);
REPORTER_ASSERT(reporter, V == SkPath::ComputeConvexity(path));
path.addCircle(0, 0, 10); // 2nd circle
REPORTER_ASSERT(reporter, C == SkPath::ComputeConvexity(path));
path.reset();
path.addRect(0, 0, 10, 10, SkPath::kCCW_Direction);
REPORTER_ASSERT(reporter, V == SkPath::ComputeConvexity(path));
path.reset();
path.addRect(0, 0, 10, 10, SkPath::kCW_Direction);
REPORTER_ASSERT(reporter, V == SkPath::ComputeConvexity(path));
static const struct {
const char* fPathStr;
SkPath::Convexity fExpectedConvexity;
} gRec[] = {
{ "", SkPath::kConvex_Convexity },
{ "0 0", SkPath::kConvex_Convexity },
{ "0 0 10 10", SkPath::kConvex_Convexity },
{ "0 0 10 10 20 20 0 0 10 10", SkPath::kConcave_Convexity },
{ "0 0 10 10 10 20", SkPath::kConvex_Convexity },
{ "0 0 10 10 10 0", SkPath::kConvex_Convexity },
{ "0 0 10 10 10 0 0 10", SkPath::kConcave_Convexity },
{ "0 0 10 0 0 10 -10 -10", SkPath::kConcave_Convexity },
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) {
SkPath path;
setFromString(&path, gRec[i].fPathStr);
SkPath::Convexity c = SkPath::ComputeConvexity(path);
REPORTER_ASSERT(reporter, c == gRec[i].fExpectedConvexity);
}
}
void onOnceBeforeDraw() override {
this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
fCirclePath.addCircle(SkIntToScalar(20), SkIntToScalar(20), SkIntToScalar(10) );
fRect.set(SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30));
fBitmap.allocPixels(SkImageInfo::Make(20, 20, SkColorType::kAlpha_8_SkColorType,
kPremul_SkAlphaType));
SkCanvas canvas(fBitmap);
canvas.clear(0x0);
SkPaint p;
canvas.drawRect(SkRect::MakeXYWH(10, 0, 10, 10), p);
canvas.drawRect(SkRect::MakeXYWH(0, 10, 10, 10), p);
}
void onDraw(SkCanvas* canvas) override {
SkPaint p;
p.setColor(SK_ColorRED);
p.setAntiAlias(true);
canvas->save();
SkPath path;
path.addCircle(100, 100, 30);
path.setFillType(SkPath::kInverseWinding_FillType);
canvas->drawPath(path, p);
canvas->restore();
}
void draw(SkCanvas* canvas) {
auto debugster = [](const char* prefix, const SkPath& path) -> void {
const SkRect& bounds = path.getBounds();
SkDebugf("%s bounds = %g, %g, %g, %g\n", prefix,
bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom);
};
SkPath path;
debugster("empty", path);
path.addCircle(50, 45, 25);
debugster("circle", path);
SkMatrix matrix;
matrix.setRotate(45, 50, 45);
path.transform(matrix);
debugster("rotated circle", path);
}
PathTexture* PathCache::getCircle(float radius, const SkPaint* paint) {
PathDescription entry(kShapeCircle, paint);
entry.shape.circle.mRadius = radius;
PathTexture* texture = get(entry);
if (!texture) {
SkPath path;
path.addCircle(radius, radius, radius, SkPath::kCW_Direction);
texture = addTexture(entry, &path, paint);
}
return texture;
}
// aaclip.setRegion should create idential masks to the region
static void test_rgn(skiatest::Reporter* reporter) {
SkRandom rand;
for (int i = 0; i < 1000; i++) {
SkRegion rgn;
make_rand_rgn(&rgn, rand);
REPORTER_ASSERT(reporter, equalsAAClip(rgn));
}
{
SkRegion rgn;
SkPath path;
path.addCircle(0, 0, SkIntToScalar(30));
setRgnToPath(&rgn, path);
REPORTER_ASSERT(reporter, equalsAAClip(rgn));
path.reset();
path.moveTo(0, 0);
path.lineTo(SkIntToScalar(100), 0);
path.lineTo(SkIntToScalar(100 - 20), SkIntToScalar(20));
path.lineTo(SkIntToScalar(20), SkIntToScalar(20));
setRgnToPath(&rgn, path);
REPORTER_ASSERT(reporter, equalsAAClip(rgn));
}
}
static SkPathEffect* MakeDotEffect(SkScalar radius, const SkMatrix& matrix) {
SkPath path;
path.addCircle(0, 0, radius);
return SkPath2DPathEffect::Create(matrix, path);
}
// Building aaclip meant aa-scan-convert a path into a huge clip.
// the old algorithm sized the supersampler to the size of the clip, which overflowed
// its internal 16bit coordinates. The fix was to intersect the clip+path_bounds before
// sizing the supersampler.
//
// Before the fix, the following code would assert in debug builds.
//
static void test_crbug_422693(skiatest::Reporter* reporter) {
SkRasterClip rc(SkIRect::MakeLTRB(-25000, -25000, 25000, 25000));
SkPath path;
path.addCircle(50, 50, 50);
rc.op(path, rc.getBounds().size(), SkRegion::kIntersect_Op, true);
}
static void TestPathMeasure(skiatest::Reporter* reporter) {
SkPath path;
path.moveTo(0, 0);
path.lineTo(SK_Scalar1, 0);
path.lineTo(SK_Scalar1, SK_Scalar1);
path.lineTo(0, SK_Scalar1);
SkPathMeasure meas(path, true);
SkScalar length = meas.getLength();
SkASSERT(length == SK_Scalar1*4);
path.reset();
path.moveTo(0, 0);
path.lineTo(SK_Scalar1*3, SK_Scalar1*4);
meas.setPath(&path, false);
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1*5);
path.reset();
path.addCircle(0, 0, SK_Scalar1);
meas.setPath(&path, true);
length = meas.getLength();
// SkDebugf("circle arc-length = %g\n", length);
// Test the behavior following a close not followed by a move.
path.reset();
path.lineTo(SK_Scalar1, 0);
path.lineTo(SK_Scalar1, SK_Scalar1);
path.lineTo(0, SK_Scalar1);
path.close();
path.lineTo(-SK_Scalar1, 0);
meas.setPath(&path, false);
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1 * 4);
meas.nextContour();
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1);
SkPoint position;
SkVector tangent;
REPORTER_ASSERT(reporter, meas.getPosTan(SK_ScalarHalf, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX,
-SK_ScalarHalf,
SkFloatToScalar(0.0001f)));
REPORTER_ASSERT(reporter, position.fY == 0);
REPORTER_ASSERT(reporter, tangent.fX == -SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
// Test degenerate paths
path.reset();
path.moveTo(0, 0);
path.lineTo(0, 0);
path.lineTo(SK_Scalar1, 0);
path.quadTo(SK_Scalar1, 0, SK_Scalar1, 0);
path.quadTo(SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1 * 2);
path.cubicTo(SK_Scalar1, SK_Scalar1 * 2,
SK_Scalar1, SK_Scalar1 * 2,
SK_Scalar1, SK_Scalar1 * 2);
path.cubicTo(SK_Scalar1*2, SK_Scalar1 * 2,
SK_Scalar1*3, SK_Scalar1 * 2,
SK_Scalar1*4, SK_Scalar1 * 2);
meas.setPath(&path, false);
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1 * 6);
REPORTER_ASSERT(reporter, meas.getPosTan(SK_ScalarHalf, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX,
SK_ScalarHalf,
SkFloatToScalar(0.0001f)));
REPORTER_ASSERT(reporter, position.fY == 0);
REPORTER_ASSERT(reporter, tangent.fX == SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
REPORTER_ASSERT(reporter, meas.getPosTan(SkFloatToScalar(2.5f), &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX, SK_Scalar1, SkFloatToScalar(0.0001f)));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fY, SkFloatToScalar(1.5f)));
REPORTER_ASSERT(reporter, tangent.fX == 0);
REPORTER_ASSERT(reporter, tangent.fY == SK_Scalar1);
REPORTER_ASSERT(reporter, meas.getPosTan(SkFloatToScalar(4.5f), &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX,
SkFloatToScalar(2.5f),
SkFloatToScalar(0.0001f)));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fY,
SkFloatToScalar(2.0f),
SkFloatToScalar(0.0001f)));
REPORTER_ASSERT(reporter, tangent.fX == SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
path.reset();
path.moveTo(0, 0);
path.lineTo(SK_Scalar1, 0);
path.moveTo(SK_Scalar1, SK_Scalar1);
path.moveTo(SK_Scalar1 * 2, SK_Scalar1 * 2);
path.lineTo(SK_Scalar1, SK_Scalar1 * 2);
meas.setPath(&path, false);
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1);
REPORTER_ASSERT(reporter, meas.getPosTan(SK_ScalarHalf, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX,
SK_ScalarHalf,
SkFloatToScalar(0.0001f)));
REPORTER_ASSERT(reporter, position.fY == 0);
REPORTER_ASSERT(reporter, tangent.fX == SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
meas.nextContour();
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1);
REPORTER_ASSERT(reporter, meas.getPosTan(SK_ScalarHalf, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX,
SkFloatToScalar(1.5f),
SkFloatToScalar(0.0001f)));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fY,
SkFloatToScalar(2.0f),
SkFloatToScalar(0.0001f)));
REPORTER_ASSERT(reporter, tangent.fX == -SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
test_small_segment(reporter);
test_small_segment2(reporter);
test_small_segment3(reporter);
}
static void TestPathMeasure(skiatest::Reporter* reporter) {
SkPath path;
path.moveTo(0, 0);
path.lineTo(SK_Scalar1, 0);
path.lineTo(SK_Scalar1, SK_Scalar1);
path.lineTo(0, SK_Scalar1);
SkPathMeasure meas(path, true);
SkScalar length = meas.getLength();
SkASSERT(length == SK_Scalar1*4);
path.reset();
path.moveTo(0, 0);
path.lineTo(SK_Scalar1*3, SK_Scalar1*4);
meas.setPath(&path, false);
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1*5);
path.reset();
path.addCircle(0, 0, SK_Scalar1);
meas.setPath(&path, true);
length = meas.getLength();
// SkDebugf("circle arc-length = %g\n", length);
for (int i = 0; i < 8; i++) {
SkScalar d = length * i / 8;
SkPoint p;
SkVector v;
meas.getPosTan(d, &p, &v);
#if 0
SkDebugf("circle arc-length=%g, pos[%g %g] tan[%g %g]\n",
d, p.fX, p.fY, v.fX, v.fY);
#endif
}
// Test the behavior following a close not followed by a move.
path.reset();
path.lineTo(SK_Scalar1, 0);
path.lineTo(SK_Scalar1, SK_Scalar1);
path.lineTo(0, SK_Scalar1);
path.close();
path.lineTo(-SK_Scalar1, 0);
meas.setPath(&path, false);
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1 * 4);
meas.nextContour();
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1);
SkPoint position;
SkVector tangent;
REPORTER_ASSERT(reporter, meas.getPosTan(SK_ScalarHalf, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX, -SK_ScalarHalf, SK_Scalar1 * 0.0001));
REPORTER_ASSERT(reporter, position.fY == 0);
REPORTER_ASSERT(reporter, tangent.fX == -SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
// Test degenerate paths
path.reset();
path.moveTo(0, 0);
path.lineTo(0, 0);
path.lineTo(SK_Scalar1, 0);
path.quadTo(SK_Scalar1, 0, SK_Scalar1, 0);
path.quadTo(SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1 * 2);
path.cubicTo(SK_Scalar1, SK_Scalar1 * 2,
SK_Scalar1, SK_Scalar1 * 2,
SK_Scalar1, SK_Scalar1 * 2);
path.cubicTo(SK_Scalar1*2, SK_Scalar1 * 2,
SK_Scalar1*3, SK_Scalar1 * 2,
SK_Scalar1*4, SK_Scalar1 * 2);
meas.setPath(&path, false);
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1 * 6);
REPORTER_ASSERT(reporter, meas.getPosTan(SK_ScalarHalf, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX, SK_ScalarHalf, SK_Scalar1 * 0.0001));
REPORTER_ASSERT(reporter, position.fY == 0);
REPORTER_ASSERT(reporter, tangent.fX == SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
REPORTER_ASSERT(reporter, meas.getPosTan(SK_Scalar1 * 2.5f, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX, SK_Scalar1, SK_Scalar1 * 0.0001));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fY, SK_Scalar1 * 1.5f));
REPORTER_ASSERT(reporter, tangent.fX == 0);
REPORTER_ASSERT(reporter, tangent.fY == SK_Scalar1);
REPORTER_ASSERT(reporter, meas.getPosTan(SK_Scalar1 * 4.5f, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX, SK_Scalar1 * 2.5f, SK_Scalar1 * 0.0001));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fY, SK_Scalar1 * 2.0f, SK_Scalar1 * 0.0001));
REPORTER_ASSERT(reporter, tangent.fX == SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
path.reset();
path.moveTo(0, 0);
path.lineTo(SK_Scalar1, 0);
path.moveTo(SK_Scalar1, SK_Scalar1);
path.moveTo(SK_Scalar1 * 2, SK_Scalar1 * 2);
path.lineTo(SK_Scalar1, SK_Scalar1 * 2);
meas.setPath(&path, false);
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1);
REPORTER_ASSERT(reporter, meas.getPosTan(SK_ScalarHalf, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX, SK_ScalarHalf, SK_Scalar1 * 0.0001));
REPORTER_ASSERT(reporter, position.fY == 0);
REPORTER_ASSERT(reporter, tangent.fX == SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
meas.nextContour();
length = meas.getLength();
REPORTER_ASSERT(reporter, length == SK_Scalar1);
REPORTER_ASSERT(reporter, meas.getPosTan(SK_ScalarHalf, &position, &tangent));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fX, SK_Scalar1 * 1.5f, SK_Scalar1 * 0.0001));
REPORTER_ASSERT(reporter,
SkScalarNearlyEqual(position.fY, SK_Scalar1 * 2.0f, SK_Scalar1 * 0.0001));
REPORTER_ASSERT(reporter, tangent.fX == -SK_Scalar1);
REPORTER_ASSERT(reporter, tangent.fY == 0);
}
ShadowsGM() {
this->setBGColor(0xFFDDDDDD);
fCirclePath.addCircle(SkIntToScalar(20), SkIntToScalar(20), SkIntToScalar(10) );
fRect.set(SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30));
}