GiantDashBench(LineType lt, SkScalar width) {
fName.printf("giantdashline_%s_%g", LineTypeName(lt), width);
fStrokeWidth = width;
// deliberately pick intervals that won't be caught by asPoints(), so
// we can test the filterPath code-path.
const SkScalar intervals[] = { 20, 10, 10, 10 };
fPathEffect.reset(SkDashPathEffect::Create(intervals,
SK_ARRAY_COUNT(intervals), 0));
SkScalar cx = 640 / 2; // center X
SkScalar cy = 480 / 2; // center Y
SkMatrix matrix;
switch (lt) {
case kHori_LineType:
matrix.setIdentity();
break;
case kVert_LineType:
matrix.setRotate(90, cx, cy);
break;
case kDiag_LineType:
matrix.setRotate(45, cx, cy);
break;
case kLineTypeCount:
// Not a real enum value.
break;
}
const SkScalar overshoot = 100*1000;
const SkPoint pts[2] = {
{ -overshoot, cy }, { 640 + overshoot, cy }
};
matrix.mapPoints(fPts, pts, 2);
}
void makeMatrices() {
{
SkMatrix m;
m.setIdentity();
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setScale(SkIntToScalar(3), SkIntToScalar(2));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setScale(SkIntToScalar(2), SkIntToScalar(2));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setScale(SkIntToScalar(1), SkIntToScalar(2));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setScale(SkIntToScalar(4), SkIntToScalar(1));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setRotate(SkIntToScalar(90));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setSkew(SkIntToScalar(2), SkIntToScalar(3));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setRotate(SkIntToScalar(60));
fMatrices.push_back(m);
}
}
void Matrix::NativeSetRotate(
/* [in] */ Int64 nObj,
/* [in] */ Float degrees)
{
SkMatrix* obj = reinterpret_cast<SkMatrix*>(nObj);
obj->setRotate(degrees);
}
static void __createRotationMatrix(int rotation, int width, int height,
SkMatrix &outMatrix) {
// set the position of the image to the middle of the screen
outMatrix.setRotate(rotation, width / 2, height / 2);
outMatrix.postTranslate((DISPLAY_WIDTH - width) / 2,
(DISPLAY_HEIGHT - height) / 2);
}
void makeMatrices() {
{
SkMatrix m;
m.setScale(SkIntToScalar(2), SkIntToScalar(3));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setScale(SkIntToScalar(2), SkIntToScalar(2));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setSkew(SkIntToScalar(2), SkIntToScalar(3));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setSkew(SkIntToScalar(2), SkIntToScalar(2));
fMatrices.push_back(m);
}
{
SkMatrix m;
m.setRotate(SkIntToScalar(30));
fMatrices.push_back(m);
}
}
void onDrawContent(SkCanvas* canvas) override {
SkISize dsize = canvas->getBaseLayerSize();
canvas->clear(0xFFF0E0F0);
for (int i = 0; i < N; ++i) {
SkRect rect = SkRect::MakeWH(SkIntToScalar(fRandom.nextRangeU(10, 100)),
SkIntToScalar(fRandom.nextRangeU(10, 100)));
int x = fRandom.nextRangeU(0, dsize.fWidth);
int y = fRandom.nextRangeU(0, dsize.fHeight);
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
// Uncomment to test rotated rect draw combining.
if (false) {
SkMatrix rotate;
rotate.setRotate(fRandom.nextUScalar1() * 360,
SkIntToScalar(x) + SkScalarHalf(rect.fRight),
SkIntToScalar(y) + SkScalarHalf(rect.fBottom));
canvas->concat(rotate);
}
SkRect clipRect = rect;
// This clip will always contain the entire rect. It's here to give the GPU op combining
// code a little more challenge.
clipRect.outset(10, 10);
canvas->clipRect(clipRect);
SkPaint paint;
paint.setColor(fRandom.nextU());
canvas->drawRect(rect, paint);
canvas->restore();
}
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(fAA);
paint.setBlendMode(fMode);
SkColor color = start_color(fColorType);
int w = this->getSize().x();
int h = this->getSize().y();
static const SkScalar kRectW = 25.1f;
static const SkScalar kRectH = 25.9f;
if (fColorType == kShaderOpaque_ColorType) {
// The only requirement for the shader is that it requires local coordinates
SkPoint pts[2] = { {0.0f, 0.0f}, {kRectW, kRectH} };
SkColor colors[] = { color, SK_ColorBLUE };
paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2,
SkTileMode::kClamp));
}
SkMatrix rotate;
// This value was chosen so that we frequently hit the axis-aligned case.
rotate.setRotate(30.f, kRectW / 2, kRectH / 2);
SkMatrix m = rotate;
SkScalar tx = 0, ty = 0;
if (fPerspective) {
// Apply some fixed perspective to change how ops may draw the rects
SkMatrix perspective;
perspective.setIdentity();
perspective.setPerspX(1e-4f);
perspective.setPerspY(1e-3f);
perspective.setSkewX(0.1f);
canvas->concat(perspective);
}
for (int i = 0; i < loops; ++i) {
canvas->save();
canvas->translate(tx, ty);
canvas->concat(m);
paint.setColor(color);
color = advance_color(color, fColorType, i);
canvas->drawRect(SkRect::MakeWH(kRectW, kRectH), paint);
canvas->restore();
tx += kRectW + 2;
if (tx > w) {
tx = 0;
ty += kRectH + 2;
if (ty > h) {
ty = 0;
}
}
m.postConcat(rotate);
}
}
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);
}
// Create a selection of imagefilter-based paints to test
static void create_paints(SkImageFilter* source, SkTArray<SkPaint>* paints) {
{
SkMatrix scale;
scale.setScale(2.0f, 2.0f);
SkAutoTUnref<SkImageFilter> scaleMIF(
SkImageFilter::CreateMatrixFilter(scale, kLow_SkFilterQuality, source));
add_paint(scaleMIF, paints);
}
{
SkMatrix rot;
rot.setRotate(-33.3f);
SkAutoTUnref<SkImageFilter> rotMIF(
SkImageFilter::CreateMatrixFilter(rot, kLow_SkFilterQuality, source));
add_paint(rotMIF, paints);
}
{
static const SkDropShadowImageFilter::ShadowMode kBoth =
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode;
SkAutoTUnref<SkDropShadowImageFilter> dsif(
SkDropShadowImageFilter::Create(10.0f, 10.0f,
3.0f, 3.0f,
SK_ColorRED, kBoth,
source, nullptr));
add_paint(dsif, paints);
}
{
SkAutoTUnref<SkDropShadowImageFilter> dsif(
SkDropShadowImageFilter::Create(27.0f, 27.0f,
3.0f, 3.0f,
SK_ColorRED,
SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode,
source, nullptr));
add_paint(dsif, paints);
}
{
SkAutoTUnref<SkBlurImageFilter> bif(SkBlurImageFilter::Create(3, 3, source));
add_paint(bif, paints);
}
{
SkAutoTUnref<SkOffsetImageFilter> oif(SkOffsetImageFilter::Create(15, 15, source));
add_paint(oif, paints);
}
}
bool SkDrawMatrix::setProperty(int index, SkScriptValue& scriptValue) {
SkScalar number = scriptValue.fOperand.fScalar;
switch (index) {
case SK_PROPERTY(translate):
// SkScalar xy[2];
SkASSERT(scriptValue.fType == SkType_Array);
SkASSERT(scriptValue.fOperand.fArray->getType() == SkType_Float);
SkASSERT(scriptValue.fOperand.fArray->count() == 2);
// SkParse::FindScalars(scriptValue.fOperand.fString->c_str(), xy, 2);
fMatrix.setTranslateX((*scriptValue.fOperand.fArray)[0].fScalar);
fMatrix.setTranslateY((*scriptValue.fOperand.fArray)[1].fScalar);
return true;
case SK_PROPERTY(perspectX):
fMatrix.setPerspX(SkScalarToPersp((number)));
break;
case SK_PROPERTY(perspectY):
fMatrix.setPerspY(SkScalarToPersp((number)));
break;
case SK_PROPERTY(rotate): {
SkMatrix temp;
temp.setRotate(number, 0, 0);
fMatrix.setScaleX(temp.getScaleX());
fMatrix.setScaleY(temp.getScaleY());
fMatrix.setSkewX(temp.getSkewX());
fMatrix.setSkewY(temp.getSkewY());
}
break;
case SK_PROPERTY(scale):
fMatrix.setScaleX(number);
fMatrix.setScaleY(number);
break;
case SK_PROPERTY(scaleX):
fMatrix.setScaleX(number);
break;
case SK_PROPERTY(scaleY):
fMatrix.setScaleY(number);
break;
case SK_PROPERTY(skewX):
fMatrix.setSkewX(number);
break;
case SK_PROPERTY(skewY):
fMatrix.setSkewY(number);
break;
case SK_PROPERTY(translateX):
fMatrix.setTranslateX(number);
break;
case SK_PROPERTY(translateY):
fMatrix.setTranslateY(number);
break;
default:
SkASSERT(0);
return false;
}
fConcat = fMatrix;
return true;
}
void makeMatrices() {
{
// 1x1.5 scale
SkMatrix m;
m.setScale(1, 1.5f);
fMatrices.push_back(m);
}
{
// 1.5x1.5 scale
SkMatrix m;
m.setScale(1.5f, 1.5f);
fMatrices.push_back(m);
}
{
// 1x1.5 skew
SkMatrix m;
m.setSkew(1, 1.5f);
fMatrices.push_back(m);
}
{
// 1.5x1.5 skew
SkMatrix m;
m.setSkew(1.5f, 1.5f);
fMatrices.push_back(m);
}
{
// 30 degree rotation
SkMatrix m;
m.setRotate(SkIntToScalar(30));
fMatrices.push_back(m);
}
{
// 90 degree rotation
SkMatrix m;
m.setRotate(SkIntToScalar(90));
fMatrices.push_back(m);
}
}
// Create a selection of imagefilter-based paints to test
static void create_paints(SkTArray<SkPaint>* paints, sk_sp<SkImageFilter> source) {
{
SkMatrix scale;
scale.setScale(2.0f, 2.0f);
sk_sp<SkImageFilter> scaleMIF(
SkImageFilter::MakeMatrixFilter(scale, kLow_SkFilterQuality, source));
add_paint(paints, std::move(scaleMIF));
}
{
SkMatrix rot;
rot.setRotate(-33.3f);
sk_sp<SkImageFilter> rotMIF(
SkImageFilter::MakeMatrixFilter(rot, kLow_SkFilterQuality, source));
add_paint(paints, std::move(rotMIF));
}
{
SkRect src = SkRect::MakeXYWH(20, 20, 10, 10);
SkRect dst = SkRect::MakeXYWH(30, 30, 30, 30);
sk_sp<SkImageFilter> tileIF(SkTileImageFilter::Make(src, dst, nullptr));
add_paint(paints, std::move(tileIF));
}
{
constexpr SkDropShadowImageFilter::ShadowMode kBoth =
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode;
sk_sp<SkImageFilter> dsif(SkDropShadowImageFilter::Make(10.0f, 10.0f,
3.0f, 3.0f,
SK_ColorRED, kBoth,
source));
add_paint(paints, std::move(dsif));
}
{
sk_sp<SkImageFilter> dsif(
SkDropShadowImageFilter::Make(27.0f, 27.0f,
3.0f, 3.0f,
SK_ColorRED,
SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode,
source));
add_paint(paints, std::move(dsif));
}
add_paint(paints, SkBlurImageFilter::Make(3, 3, source));
add_paint(paints, SkOffsetImageFilter::Make(15, 15, source));
}
void draw(SkCanvas* canvas) {
SkPath path;
path.moveTo(100, 100);
path.quadTo(100, 20, 20, 100);
SkMatrix matrix;
matrix.setRotate(36, 100, 100);
path.transform(matrix);
SkPoint last;
path.getLastPt(&last);
SkDebugf("last point: %g, %g\n", last.fX, last.fY);
}
void drawShape(SkCanvas* canvas,
SkPaint* paint,
ShapeType type) {
static const SkRect kRect = SkRect::MakeXYWH(SkIntToScalar(-50), SkIntToScalar(-50),
SkIntToScalar(75), SkIntToScalar(105));
switch (type) {
case kCircle_ShapeType:
canvas->drawCircle(0, 0, 50, *paint);
break;
case kRoundRect_ShapeType:
canvas->drawRoundRect(kRect, SkIntToScalar(10), SkIntToScalar(20), *paint);
break;
case kRect_ShapeType:
canvas->drawRect(kRect, *paint);
break;
case kConvexPath_ShapeType:
if (fConvexPath.isEmpty()) {
SkPoint points[4];
kRect.toQuad(points);
fConvexPath.moveTo(points[0]);
fConvexPath.quadTo(points[1], points[2]);
fConvexPath.quadTo(points[3], points[0]);
SkASSERT(fConvexPath.isConvex());
}
canvas->drawPath(fConvexPath, *paint);
break;
case kConcavePath_ShapeType:
if (fConcavePath.isEmpty()) {
SkPoint points[5] = {{0, SkIntToScalar(-50)} };
SkMatrix rot;
rot.setRotate(SkIntToScalar(360) / 5);
for (int i = 1; i < 5; ++i) {
rot.mapPoints(points + i, points + i - 1, 1);
}
fConcavePath.moveTo(points[0]);
for (int i = 0; i < 5; ++i) {
fConcavePath.lineTo(points[(2 * i) % 5]);
}
fConcavePath.setFillType(SkPath::kEvenOdd_FillType);
SkASSERT(!fConcavePath.isConvex());
}
canvas->drawPath(fConcavePath, *paint);
break;
case kText_ShapeType: {
const char* text = "Hello!";
paint->setTextSize(30);
sk_tool_utils::set_portable_typeface(paint);
canvas->drawText(text, strlen(text), 0, 0, *paint);
}
default:
break;
}
}
void
PathBuilderSkia::Arc(const Point &aOrigin, float aRadiusX, float aRadiusY, float aRotationAngle,
float aStartAngle, float aEndAngle, bool aAntiClockwise)
{
ArcToBezier<PathBuilder>(this, aOrigin, Size(aRadiusX, aRadiusY), aStartAngle, aEndAngle, aAntiClockwise);
if (aRotationAngle) {
SkMatrix matrix;
matrix.setRotate(aRotationAngle * 180.0 / M_PI, aOrigin.x, aOrigin.y);
mPath.transform(matrix);
}
}
void onDraw(SkCanvas* canvas) override {
static const int kOn = 4;
static const int kOff = 4;
static const int kIntervalLength = kOn + kOff;
static const SkColor gColors[kIntervalLength] = {
SK_ColorRED,
SK_ColorGREEN,
SK_ColorBLUE,
SK_ColorCYAN,
SK_ColorMAGENTA,
SK_ColorYELLOW,
SK_ColorGRAY,
SK_ColorDKGRAY
};
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setAntiAlias(fDoAA);
SkMatrix rot;
rot.setRotate(90);
SkASSERT(rot.rectStaysRect());
canvas->concat(rot);
int sign; // used to toggle the direction of the lines
int phase = 0;
for (int x = 0; x < 200; x += 10) {
paint.setStrokeWidth(SkIntToScalar(phase+1));
paint.setColor(gColors[phase]);
sign = (x % 20) ? 1 : -1;
drawline(canvas, kOn, kOff, paint,
SkIntToScalar(x), -sign * SkIntToScalar(10003),
SkIntToScalar(phase),
SkIntToScalar(x), sign * SkIntToScalar(10003));
phase = (phase + 1) % kIntervalLength;
}
for (int y = -400; y < 0; y += 10) {
paint.setStrokeWidth(SkIntToScalar(phase+1));
paint.setColor(gColors[phase]);
sign = (y % 20) ? 1 : -1;
drawline(canvas, kOn, kOff, paint,
-sign * SkIntToScalar(10003), SkIntToScalar(y),
SkIntToScalar(phase),
sign * SkIntToScalar(10003), SkIntToScalar(y));
phase = (phase + 1) % kIntervalLength;
}
}
static void test_decompScale(skiatest::Reporter* reporter) {
SkMatrix m;
m.reset();
REPORTER_ASSERT(reporter, check_decompScale(m));
m.setScale(2, 3);
REPORTER_ASSERT(reporter, check_decompScale(m));
m.setRotate(35, 0, 0);
REPORTER_ASSERT(reporter, check_decompScale(m));
m.setScale(1, 0);
REPORTER_ASSERT(reporter, !check_decompScale(m));
}
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);
}
ImageView() {
SkImageRef_GlobalPool::SetRAMBudget(32 * 1024);
int i, N = SK_ARRAY_COUNT(gNames);
fBitmaps = new SkBitmap[N];
for (i = 0; i < N; i++) {
SkString str("/skimages/");
str.append(gNames[i]);
SkFILEStream* stream = new SkFILEStream(str.c_str());
SetImageRef(&fBitmaps[i], stream, SkBitmap::kNo_Config, gNames[i]);
if (i & 1)
fBitmaps[i].buildMipMap();
stream->unref();
}
fShader = SkShader::CreateBitmapShader(fBitmaps[5],
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode);
if (true) {
SkMatrix m;
m.setRotate(SkIntToScalar(30));
fShader->setLocalMatrix(m);
}
#if 0
SkImageRef::DumpPool();
for (i = 0; i < N; i++) {
SkBitmap& bm = fBitmaps[i];
SkDebugf("<%s> addr=%p", gNames[i], bm.getPixels());
bool success = bm.lockPixels();
SkDebugf(" addr=%d", bm.getPixels());
if (success)
bm.unlockPixels();
SkDebugf(" addr=%p", bm.getPixels());
success = bm.lockPixels();
SkDebugf(" addr=%d", bm.getPixels());
if (success)
bm.unlockPixels();
SkDebugf("\n");
}
SkImageRef::DumpPool();
#endif
}
void onDrawContent(SkCanvas* canvas) override {
const int nu = 10;
const int nv = 10;
SkPaint paint;
paint.setDither(true);
paint.setFilterQuality(kLow_SkFilterQuality);
canvas->translate(DX, DY);
Patch patch;
paint.setShader(fShader0);
if (fSize0.fX == 0) {
fSize0.fX = 1;
}
if (fSize0.fY == 0) {
fSize0.fY = 1;
}
patch.setBounds(fSize0.fX, fSize0.fY);
patch.setPatch(fPts);
drawpatches(canvas, paint, nu, nv, &patch);
paint.setShader(nullptr);
paint.setAntiAlias(true);
paint.setStrokeWidth(SkIntToScalar(5));
canvas->drawPoints(SkCanvas::kPoints_PointMode, SK_ARRAY_COUNT(fPts), fPts, paint);
canvas->translate(0, SkIntToScalar(300));
paint.setAntiAlias(false);
paint.setShader(fShader1);
if (true) {
SkMatrix m;
m.setSkew(1, 0);
SkShader* s = SkShader::CreateLocalMatrixShader(paint.getShader(), m);
paint.setShader(s)->unref();
}
if (true) {
SkMatrix m;
m.setRotate(fAngle);
SkShader* s = SkShader::CreateLocalMatrixShader(paint.getShader(), m);
paint.setShader(s)->unref();
}
patch.setBounds(fSize1.fX, fSize1.fY);
drawpatches(canvas, paint, nu, nv, &patch);
}
ShapesGM() {
SkMatrix m;
fGroup.appendShape(make_shape0(false))->unref();
m.setRotate(SkIntToScalar(30), SkIntToScalar(50), SkIntToScalar(50));
m.postTranslate(0, SkIntToScalar(120));
fGroup.appendShape(make_shape0(true), m)->unref();
m.setTranslate(SkIntToScalar(120), 0);
fGroup.appendShape(make_shape1(), m)->unref();
m.postTranslate(0, SkIntToScalar(120));
fGroup.appendShape(make_shape2(), m)->unref();
for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrixRefs); i++) {
SkSafeRef(fMatrixRefs[i] = fGroup.getShapeMatrixRef(i));
}
}
SkLayerView() {
test44();
static const int W = 600;
static const int H = 440;
static const struct {
int fWidth;
int fHeight;
SkColor fColor;
int fPosX;
int fPosY;
} gData[] = {
{ 120, 80, SK_ColorRED, 0, 0 },
{ 120, 80, SK_ColorGREEN, W - 120, 0 },
{ 120, 80, SK_ColorBLUE, 0, H - 80 },
{ 120, 80, SK_ColorMAGENTA, W - 120, H - 80 },
};
fRootLayer = new TestLayer(0xFFDDDDDD);
fRootLayer->setSize(W, H);
for (size_t i = 0; i < SK_ARRAY_COUNT(gData); i++) {
SkLayer* child = new TestLayer(gData[i].fColor);
child->setSize(gData[i].fWidth, gData[i].fHeight);
child->setPosition(gData[i].fPosX, gData[i].fPosY);
fRootLayer->addChild(child)->unref();
}
SkLayer* child = new TestLayer(0xFFDD8844);
child->setSize(120, 80);
child->setPosition(fRootLayer->getWidth()/2 - child->getWidth()/2,
fRootLayer->getHeight()/2 - child->getHeight()/2);
child->setAnchorPoint(SK_ScalarHalf, SK_ScalarHalf);
{
SkMatrix m;
m.setRotate(SkIntToScalar(30));
child->setMatrix(m);
}
fLastChild = child;
fRootLayer->addChild(child)->unref();
if (false) {
SkMatrix matrix;
matrix.setScale(0.5, 0.5);
fRootLayer->setMatrix(matrix);
}
// dump_layers(fRootLayer);
}
// Creates a star type shape using a SkPath
static SkPath create_star() {
static const int kNumPoints = 5;
SkPath concavePath;
SkPoint points[kNumPoints] = {{0, SkIntToScalar(-50)} };
SkMatrix rot;
rot.setRotate(SkIntToScalar(360) / kNumPoints);
for (int i = 1; i < kNumPoints; ++i) {
rot.mapPoints(points + i, points + i - 1, 1);
}
concavePath.moveTo(points[0]);
for (int i = 0; i < kNumPoints; ++i) {
concavePath.lineTo(points[(2 * i) % kNumPoints]);
}
concavePath.setFillType(SkPath::kEvenOdd_FillType);
SkASSERT(!concavePath.isConvex());
concavePath.close();
return concavePath;
}
virtual void recordCanvas(SkCanvas* canvas) {
const SkPoint translateDelta = getTranslateDelta();
for (int i = 0; i < M; i++) {
SkColor color = SK_ColorYELLOW + (i % 255);
SkIRect rect = SkIRect::MakeWH(i,i);
canvas->save();
// set the clip to the given region
SkRegion region;
region.setRect(rect);
canvas->clipRegion(region);
// fill the clip with a color
SkPaint paint;
paint.setColor(color);
canvas->drawPaint(paint);
// set a matrix on the canvas
SkMatrix matrix;
matrix.setRotate(SkIntToScalar(i % 360));
canvas->setMatrix(matrix);
// create a simple bitmap
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kRGB_565_Config, 10, 10);
bitmap.allocPixels();
// draw a single color into the bitmap
SkCanvas bitmapCanvas(bitmap);
bitmapCanvas.drawColor(SkColorSetA(color, i % 255));
// draw the bitmap onto the canvas
canvas->drawBitmapMatrix(bitmap, matrix);
canvas->restore();
canvas->translate(translateDelta.fX, translateDelta.fY);
}
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(fAA);
paint.setXfermodeMode(fMode);
SkColor color = start_color(fColorType);
int w = this->getSize().x();
int h = this->getSize().y();
static const SkScalar kRectW = 25.1f;
static const SkScalar kRectH = 25.9f;
SkMatrix rotate;
// This value was chosen so that we frequently hit the axis-aligned case.
rotate.setRotate(30.f, kRectW / 2, kRectH / 2);
SkMatrix m = rotate;
SkScalar tx = 0, ty = 0;
for (int i = 0; i < loops; ++i) {
canvas->save();
canvas->translate(tx, ty);
canvas->concat(m);
paint.setColor(color);
color = advance_color(color, fColorType, i);
canvas->drawRect(SkRect::MakeWH(kRectW, kRectH), paint);
canvas->restore();
tx += kRectW + 2;
if (tx > w) {
tx = 0;
ty += kRectH + 2;
if (ty > h) {
ty = 0;
}
}
m.postConcat(rotate);
}
}
void GM::DrawGpuOnlyMessage(SkCanvas* canvas) {
SkBitmap bmp;
bmp.allocN32Pixels(128, 64);
SkCanvas bmpCanvas(bmp);
bmpCanvas.drawColor(SK_ColorWHITE);
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(20);
paint.setColor(SK_ColorRED);
sk_tool_utils::set_portable_typeface(&paint);
static const char kTxt[] = "GPU Only";
bmpCanvas.drawText(kTxt, strlen(kTxt), 20, 40, paint);
SkMatrix localM;
localM.setRotate(35.f);
localM.postTranslate(10.f, 0.f);
paint.setShader(SkShader::MakeBitmapShader(bmp, SkShader::kMirror_TileMode,
SkShader::kMirror_TileMode,
&localM));
paint.setFilterQuality(kMedium_SkFilterQuality);
canvas->drawPaint(paint);
return;
}
static void test_matrix_homogeneous(skiatest::Reporter* reporter) {
SkMatrix mat;
const float kRotation0 = 15.5f;
const float kRotation1 = -50.f;
const float kScale0 = 5000.f;
const int kTripleCount = 1000;
const int kMatrixCount = 1000;
SkRandom rand;
SkScalar randTriples[3*kTripleCount];
for (int i = 0; i < 3*kTripleCount; ++i) {
randTriples[i] = rand.nextRangeF(-3000.f, 3000.f);
}
SkMatrix mats[kMatrixCount];
for (int i = 0; i < kMatrixCount; ++i) {
for (int j = 0; j < 9; ++j) {
mats[i].set(j, rand.nextRangeF(-3000.f, 3000.f));
}
}
// identity
{
mat.reset();
SkScalar dst[3*kTripleCount];
mat.mapHomogeneousPoints(dst, randTriples, kTripleCount);
REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(randTriples, dst, kTripleCount*3));
}
// zero matrix
{
mat.setAll(0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f, 0.f);
SkScalar dst[3*kTripleCount];
mat.mapHomogeneousPoints(dst, randTriples, kTripleCount);
SkScalar zeros[3] = {0.f, 0.f, 0.f};
for (int i = 0; i < kTripleCount; ++i) {
REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(&dst[i*3], zeros, 3));
}
}
// zero point
{
SkScalar zeros[3] = {0.f, 0.f, 0.f};
for (int i = 0; i < kMatrixCount; ++i) {
SkScalar dst[3];
mats[i].mapHomogeneousPoints(dst, zeros, 1);
REPORTER_ASSERT(reporter, scalar_array_nearly_equal_relative(dst, zeros, 3));
}
}
// doesn't crash with null dst, src, count == 0
{
mats[0].mapHomogeneousPoints(NULL, NULL, 0);
}
// uniform scale of point
{
mat.setScale(kScale0, kScale0);
SkScalar dst[3];
SkScalar src[3] = {randTriples[0], randTriples[1], 1.f};
SkPoint pnt;
pnt.set(src[0], src[1]);
mat.mapHomogeneousPoints(dst, src, 1);
mat.mapPoints(&pnt, &pnt, 1);
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[0], pnt.fX));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[1], pnt.fY));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[2], SK_Scalar1));
}
// rotation of point
{
mat.setRotate(kRotation0);
SkScalar dst[3];
SkScalar src[3] = {randTriples[0], randTriples[1], 1.f};
SkPoint pnt;
pnt.set(src[0], src[1]);
mat.mapHomogeneousPoints(dst, src, 1);
mat.mapPoints(&pnt, &pnt, 1);
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[0], pnt.fX));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[1], pnt.fY));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[2], SK_Scalar1));
}
// rotation, scale, rotation of point
{
mat.setRotate(kRotation1);
mat.postScale(kScale0, kScale0);
mat.postRotate(kRotation0);
SkScalar dst[3];
SkScalar src[3] = {randTriples[0], randTriples[1], 1.f};
SkPoint pnt;
pnt.set(src[0], src[1]);
mat.mapHomogeneousPoints(dst, src, 1);
mat.mapPoints(&pnt, &pnt, 1);
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[0], pnt.fX));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[1], pnt.fY));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst[2], SK_Scalar1));
}
// compare with naive approach
{
for (int i = 0; i < kMatrixCount; ++i) {
for (int j = 0; j < kTripleCount; ++j) {
SkScalar dst[3];
mats[i].mapHomogeneousPoints(dst, &randTriples[j*3], 1);
REPORTER_ASSERT(reporter, naive_homogeneous_mapping(mats[i], &randTriples[j*3], dst));
}
}
}
}
static void test_matrix_decomposition(skiatest::Reporter* reporter) {
SkMatrix mat;
SkPoint rotation1, scale, rotation2;
const float kRotation0 = 15.5f;
const float kRotation1 = -50.f;
const float kScale0 = 5000.f;
const float kScale1 = 0.001f;
// identity
mat.reset();
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// make sure it doesn't crash if we pass in NULLs
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, NULL, NULL, NULL));
// rotation only
mat.setRotate(kRotation0);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// uniform scale only
mat.setScale(kScale0, kScale0);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// anisotropic scale only
mat.setScale(kScale1, kScale0);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// rotation then uniform scale
mat.setRotate(kRotation1);
mat.postScale(kScale0, kScale0);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// uniform scale then rotation
mat.setScale(kScale0, kScale0);
mat.postRotate(kRotation1);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// rotation then uniform scale+reflection
mat.setRotate(kRotation0);
mat.postScale(kScale1, -kScale1);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// uniform scale+reflection, then rotate
mat.setScale(kScale0, -kScale0);
mat.postRotate(kRotation1);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// rotation then anisotropic scale
mat.setRotate(kRotation1);
mat.postScale(kScale1, kScale0);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// rotation then anisotropic scale
mat.setRotate(90);
mat.postScale(kScale1, kScale0);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// anisotropic scale then rotation
mat.setScale(kScale1, kScale0);
mat.postRotate(kRotation0);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// anisotropic scale then rotation
mat.setScale(kScale1, kScale0);
mat.postRotate(90);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// rotation, uniform scale, then different rotation
mat.setRotate(kRotation1);
mat.postScale(kScale0, kScale0);
mat.postRotate(kRotation0);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// rotation, anisotropic scale, then different rotation
mat.setRotate(kRotation0);
mat.postScale(kScale1, kScale0);
mat.postRotate(kRotation1);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// rotation, anisotropic scale + reflection, then different rotation
mat.setRotate(kRotation0);
mat.postScale(-kScale1, kScale0);
mat.postRotate(kRotation1);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// try some random matrices
SkRandom rand;
for (int m = 0; m < 1000; ++m) {
SkScalar rot0 = rand.nextRangeF(-180, 180);
SkScalar sx = rand.nextRangeF(-3000.f, 3000.f);
SkScalar sy = rand.nextRangeF(-3000.f, 3000.f);
SkScalar rot1 = rand.nextRangeF(-180, 180);
mat.setRotate(rot0);
mat.postScale(sx, sy);
mat.postRotate(rot1);
if (SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2)) {
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
} else {
// if the matrix is degenerate, the basis vectors should be near-parallel or near-zero
SkScalar perpdot = mat[SkMatrix::kMScaleX]*mat[SkMatrix::kMScaleY] -
mat[SkMatrix::kMSkewX]*mat[SkMatrix::kMSkewY];
REPORTER_ASSERT(reporter, SkScalarNearlyZero(perpdot));
}
}
// translation shouldn't affect this
mat.postTranslate(-1000.f, 1000.f);
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// perspective shouldn't affect this
mat[SkMatrix::kMPersp0] = 12.f;
mat[SkMatrix::kMPersp1] = 4.f;
mat[SkMatrix::kMPersp2] = 1872.f;
REPORTER_ASSERT(reporter, SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
REPORTER_ASSERT(reporter, check_matrix_recomposition(mat, rotation1, scale, rotation2));
// degenerate matrices
// mostly zero entries
mat.reset();
mat[SkMatrix::kMScaleX] = 0.f;
REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
mat.reset();
mat[SkMatrix::kMScaleY] = 0.f;
REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
mat.reset();
// linearly dependent entries
mat[SkMatrix::kMScaleX] = 1.f;
mat[SkMatrix::kMSkewX] = 2.f;
mat[SkMatrix::kMSkewY] = 4.f;
mat[SkMatrix::kMScaleY] = 8.f;
REPORTER_ASSERT(reporter, !SkDecomposeUpper2x2(mat, &rotation1, &scale, &rotation2));
}
static void test_matrix_is_similarity(skiatest::Reporter* reporter) {
SkMatrix mat;
// identity
mat.setIdentity();
REPORTER_ASSERT(reporter, mat.isSimilarity());
// translation only
mat.reset();
mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// scale with same size
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// scale with one negative
mat.reset();
mat.setScale(SkIntToScalar(-15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// scale with different size
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(20));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// scale with same size at a pivot point
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(15),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// scale with different size at a pivot point
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(20),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// skew with same size
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// skew with different size
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(20));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// skew with same size at a pivot point
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(15),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// skew with different size at a pivot point
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(20),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// perspective x
mat.reset();
mat.setPerspX(SkScalarToPersp(SK_Scalar1 / 2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// perspective y
mat.reset();
mat.setPerspY(SkScalarToPersp(SK_Scalar1 / 2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// rotate
for (int angle = 0; angle < 360; ++angle) {
mat.reset();
mat.setRotate(SkIntToScalar(angle));
REPORTER_ASSERT(reporter, mat.isSimilarity());
}
// see if there are any accumulated precision issues
mat.reset();
for (int i = 1; i < 360; i++) {
mat.postRotate(SkIntToScalar(1));
}
REPORTER_ASSERT(reporter, mat.isSimilarity());
// rotate + translate
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postTranslate(SkIntToScalar(10), SkIntToScalar(20));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// rotate + uniform scale
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postScale(SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// rotate + non-uniform scale
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postScale(SkIntToScalar(3), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// all zero
mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0);
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// all zero except perspective
mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, SK_Scalar1);
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// scales zero, only skews
mat.setAll(0, SK_Scalar1, 0,
SK_Scalar1, 0, 0,
0, 0, SkMatrix::I()[8]);
REPORTER_ASSERT(reporter, mat.isSimilarity());
}
static void test_matrix_min_max_scale(skiatest::Reporter* reporter) {
SkScalar scales[2];
bool success;
SkMatrix identity;
identity.reset();
REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMinScale());
REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxScale());
success = identity.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success && SK_Scalar1 == scales[0] && SK_Scalar1 == scales[1]);
SkMatrix scale;
scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4);
REPORTER_ASSERT(reporter, SK_Scalar1 * 2 == scale.getMinScale());
REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxScale());
success = scale.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success && SK_Scalar1 * 2 == scales[0] && SK_Scalar1 * 4 == scales[1]);
SkMatrix rot90Scale;
rot90Scale.setRotate(90 * SK_Scalar1);
rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2);
REPORTER_ASSERT(reporter, SK_Scalar1 / 4 == rot90Scale.getMinScale());
REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxScale());
success = rot90Scale.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success && SK_Scalar1 / 4 == scales[0] && SK_Scalar1 / 2 == scales[1]);
SkMatrix rotate;
rotate.setRotate(128 * SK_Scalar1);
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, rotate.getMinScale(), SK_ScalarNearlyZero));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, rotate.getMaxScale(), SK_ScalarNearlyZero));
success = rotate.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success);
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, scales[0], SK_ScalarNearlyZero));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, scales[1], SK_ScalarNearlyZero));
SkMatrix translate;
translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1);
REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMinScale());
REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxScale());
success = translate.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success && SK_Scalar1 == scales[0] && SK_Scalar1 == scales[1]);
SkMatrix perspX;
perspX.reset();
perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000));
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMinScale());
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxScale());
// Verify that getMinMaxScales() doesn't update the scales array on failure.
scales[0] = -5;
scales[1] = -5;
success = perspX.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, !success && -5 * SK_Scalar1 == scales[0] && -5 * SK_Scalar1 == scales[1]);
SkMatrix perspY;
perspY.reset();
perspY.setPerspY(SkScalarToPersp(-SK_Scalar1 / 500));
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMinScale());
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxScale());
scales[0] = -5;
scales[1] = -5;
success = perspY.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, !success && -5 * SK_Scalar1 == scales[0] && -5 * SK_Scalar1 == scales[1]);
SkMatrix baseMats[] = {scale, rot90Scale, rotate,
translate, perspX, perspY};
SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)];
for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) {
mats[i] = baseMats[i];
bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]);
REPORTER_ASSERT(reporter, invertable);
}
SkRandom rand;
for (int m = 0; m < 1000; ++m) {
SkMatrix mat;
mat.reset();
for (int i = 0; i < 4; ++i) {
int x = rand.nextU() % SK_ARRAY_COUNT(mats);
mat.postConcat(mats[x]);
}
SkScalar minScale = mat.getMinScale();
SkScalar maxScale = mat.getMaxScale();
REPORTER_ASSERT(reporter, (minScale < 0) == (maxScale < 0));
REPORTER_ASSERT(reporter, (maxScale < 0) == mat.hasPerspective());
SkScalar scales[2];
bool success = mat.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success == !mat.hasPerspective());
REPORTER_ASSERT(reporter, !success || (scales[0] == minScale && scales[1] == maxScale));
if (mat.hasPerspective()) {
m -= 1; // try another non-persp matrix
continue;
}
// test a bunch of vectors. All should be scaled by between minScale and maxScale
// (modulo some error) and we should find a vector that is scaled by almost each.
static const SkScalar gVectorScaleTol = (105 * SK_Scalar1) / 100;
static const SkScalar gCloseScaleTol = (97 * SK_Scalar1) / 100;
SkScalar max = 0, min = SK_ScalarMax;
SkVector vectors[1000];
for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
vectors[i].fX = rand.nextSScalar1();
vectors[i].fY = rand.nextSScalar1();
if (!vectors[i].normalize()) {
i -= 1;
continue;
}
}
mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors));
for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
SkScalar d = vectors[i].length();
REPORTER_ASSERT(reporter, SkScalarDiv(d, maxScale) < gVectorScaleTol);
REPORTER_ASSERT(reporter, SkScalarDiv(minScale, d) < gVectorScaleTol);
if (max < d) {
max = d;
}
if (min > d) {
min = d;
}
}
REPORTER_ASSERT(reporter, SkScalarDiv(max, maxScale) >= gCloseScaleTol);
REPORTER_ASSERT(reporter, SkScalarDiv(minScale, min) >= gCloseScaleTol);
}
}