void onDraw(SkCanvas* canvas) override {
// There's a black pixel at 40, 40 for reference.
canvas->drawPoint(40.0f, 40.0f, SK_ColorBLACK);
// Two reference images.
canvas->translate(50.0f, 50.0f);
drawTestCase(canvas, 1.0f);
canvas->translate(0.0f, 50.0f);
drawTestCase(canvas, 3.0f);
// Uniform scaling test.
canvas->translate(0.0f, 100.0f);
canvas->save();
canvas->scale(3.0f, 3.0f);
drawTestCase(canvas, 1.0f);
canvas->restore();
// Non-uniform scaling test.
canvas->translate(0.0f, 100.0f);
canvas->save();
canvas->scale(3.0f, 6.0f);
drawTestCase(canvas, 1.0f);
canvas->restore();
// Skew test.
canvas->translate(0.0f, 80.0f);
canvas->save();
canvas->scale(3.0f, 3.0f);
SkMatrix skew;
skew.setIdentity();
skew.setSkewX(8.0f / 25.0f);
skew.setSkewY(2.0f / 25.0f);
canvas->concat(skew);
drawTestCase(canvas, 1.0f);
canvas->restore();
// Perspective test.
canvas->translate(0.0f, 80.0f);
canvas->save();
SkMatrix perspective;
perspective.setIdentity();
perspective.setPerspX(-SkScalarInvert(340));
perspective.setSkewX(8.0f / 25.0f);
perspective.setSkewY(2.0f / 25.0f);
canvas->concat(perspective);
drawTestCase(canvas, 1.0f);
canvas->restore();
}
void anchor_handle_renderer::draw_anchor (SkCanvas &canvas, const SkRect &rect, SkPaint &paint) const
{
switch (m_node_type)
{
case handle_type::DIAMOND:
{
canvas.save ();
canvas.translate (rect.centerX (), rect.centerY ());
canvas.rotate (45);
SkRect moved_rect = rect;
moved_rect.offset (-rect.centerX (), -rect.centerY ());
paint.setAntiAlias (true);
canvas.drawRect (moved_rect, paint);
canvas.restore ();
break;
}
case handle_type::SQUARE:
canvas.drawRect (rect, paint);
break;
case handle_type::CIRCLE:
canvas.drawOval (rect, paint);
break;
case handle_type::DOUBLE_HEADED_ARROW:
case handle_type::ROTATE_ARROW:
SkPath path = qt2skia::path (*m_paths.at (m_node_type));
SkMatrix trans;
trans.setIdentity ();
trans.postRotate (m_rotation_angle, 32, 32); // TODO: change all these to use info from path_storage (bounding box and center (possibly should be made 0))
trans.postConcat (qt2skia::matrix (geom::rect2rect (QRectF (0, 0, 64, 64), qt2skia::rect (rect))));
path.transform (trans);
paint.setAntiAlias (true);
canvas.drawPath (path, paint);
break;
}
}
virtual void onDraw(SkCanvas* canvas) {
SkPoint pts[2] = {
{ 0, 0 },
{ SkIntToScalar(100), SkIntToScalar(100) }
};
SkShader::TileMode tm = SkShader::kClamp_TileMode;
SkRect r = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) };
SkPaint paint;
paint.setAntiAlias(true);
canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
for (size_t i = 0; i < SK_ARRAY_COUNT(gGradData); i++) {
canvas->save();
for (size_t j = 0; j < SK_ARRAY_COUNT(gGradMakers); j++) {
SkShader* shader = gGradMakers[j](pts, gGradData[i], tm, NULL);
// apply an increasing y perspective as we move to the right
SkMatrix perspective;
perspective.setIdentity();
perspective.setPerspY(SkScalarDiv(SkIntToScalar((unsigned) i+1),
SkIntToScalar(500)));
perspective.setSkewX(SkScalarDiv(SkIntToScalar((unsigned) i+1),
SkIntToScalar(10)));
shader->setLocalMatrix(perspective);
paint.setShader(shader);
canvas->drawRect(r, paint);
shader->unref();
canvas->translate(0, SkIntToScalar(120));
}
canvas->restore();
canvas->translate(SkIntToScalar(120), 0);
}
}
sk_shader_t* sk_shader_new_two_point_conical_gradient(const sk_point_t* start,
float startRadius,
const sk_point_t* end,
float endRadius,
const sk_color_t colors[],
const float colorPos[],
int colorCount,
sk_shader_tilemode_t cmode,
const sk_matrix_t* cmatrix) {
SkTileMode mode;
if (!from_c_tilemode(cmode, &mode)) {
return nullptr;
}
SkMatrix matrix;
if (cmatrix) {
from_c_matrix(cmatrix, &matrix);
} else {
matrix.setIdentity();
}
SkPoint skstart = to_skpoint(*start);
SkPoint skend = to_skpoint(*end);
return (sk_shader_t*)SkGradientShader::MakeTwoPointConical(skstart, (SkScalar)startRadius,
skend, (SkScalar)endRadius,
reinterpret_cast<const SkColor*>(colors),
reinterpret_cast<const SkScalar*>(colorPos),
colorCount, mode, 0, &matrix).release();
}
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 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 perspective;
perspective.setIdentity();
perspective.setPerspY(SkScalarDiv(SK_Scalar1, SkIntToScalar(1000)));
perspective.setSkewX(SkScalarDiv(SkIntToScalar(8), SkIntToScalar(25)));
canvas->concat(perspective);
INHERITED::onDraw(canvas);
}
void draw(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(24);
canvas->drawString("normal", 12, 24, paint);
SkMatrix matrix;
matrix.setIdentity();
matrix.setSkewX(-.7f);
canvas->concat(matrix);
canvas->drawString("x skew", 36, 48, paint);
}
static void android_view_RenderNode_getInverseTransformMatrix(JNIEnv* env,
jobject clazz, jlong renderNodePtr, jlong outMatrixPtr) {
// load transform matrix
android_view_RenderNode_getTransformMatrix(env, clazz, renderNodePtr, outMatrixPtr);
SkMatrix* outMatrix = reinterpret_cast<SkMatrix*>(outMatrixPtr);
// return it inverted
if (!outMatrix->invert(outMatrix)) {
// failed to load inverse, pass back identity
outMatrix->setIdentity();
}
}
void OsmAnd::MapRasterizer_P::rasterizePolylineIcons(
const Context& context,
SkCanvas& canvas,
const SkPath& path,
const MapStyleEvaluationResult& evalResult)
{
bool ok;
QString pathIconName;
ok = evalResult.getStringValue(context.env->styleBuiltinValueDefs->id_OUTPUT_PATH_ICON, pathIconName);
if (!ok || pathIconName.isEmpty())
return;
float pathIconStep = 0.0f;
ok = evalResult.getFloatValue(context.env->styleBuiltinValueDefs->id_OUTPUT_PATH_ICON_STEP, pathIconStep);
if (!ok || pathIconStep <= 0.0f)
return;
std::shared_ptr<const SkBitmap> pathIcon;
ok = context.env->obtainMapIcon(pathIconName, pathIcon);
if (!ok || !pathIcon)
return;
SkMatrix mIconTransform;
mIconTransform.setIdentity();
mIconTransform.setTranslate(-0.5f * pathIcon->width(), -0.5f * pathIcon->height());
mIconTransform.postRotate(90.0f);
SkPathMeasure pathMeasure(path, false);
const auto length = pathMeasure.getLength();
auto iconOffset = 0.5f * pathIconStep;
const auto iconInstancesCount = static_cast<int>((length - iconOffset) / pathIconStep) + 1;
if (iconInstancesCount < 1)
return;
SkMatrix mIconInstanceTransform;
for (auto iconInstanceIdx = 0; iconInstanceIdx < iconInstancesCount; iconInstanceIdx++, iconOffset += pathIconStep)
{
SkMatrix mPinPoint;
ok = pathMeasure.getMatrix(iconOffset, &mPinPoint);
if (!ok)
break;
mIconInstanceTransform.setConcat(mPinPoint, mIconTransform);
canvas.save();
canvas.concat(mIconInstanceTransform);
canvas.drawBitmap(*pathIcon, 0, 0, &_defaultPaint);
canvas.restore();
}
}
static void android_view_RenderNode_getTransformMatrix(JNIEnv* env,
jobject clazz, jlong renderNodePtr, jlong outMatrixPtr) {
RenderNode* renderNode = reinterpret_cast<RenderNode*>(renderNodePtr);
SkMatrix* outMatrix = reinterpret_cast<SkMatrix*>(outMatrixPtr);
renderNode->mutateStagingProperties().updateMatrix();
const SkMatrix* transformMatrix = renderNode->stagingProperties().getTransformMatrix();
if (transformMatrix) {
*outMatrix = *transformMatrix;
} else {
outMatrix->setIdentity();
}
}
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 draw(SkCanvas* canvas) {
SkMatrix m;
m.setIdentity();
m.set(SkMatrix::kMPersp0, -0.004f);
SkAutoCanvasRestore autoRestore(canvas, true);
canvas->translate(22, 144);
SkPaint black;
black.setAntiAlias(true);
black.setTextSize(24);
SkPaint gray = black;
gray.setColor(0xFF9f9f9f);
SkString string;
string.appendScalar(m.getPerspX());
canvas->drawString(string, 0, -72, gray);
canvas->concat(m);
canvas->drawString(string, 0, 0, black);
}
sk_shader_t* sk_shader_new_sweep_gradient(const sk_point_t* ccenter,
const sk_color_t colors[],
const float colorPos[],
int colorCount,
const sk_matrix_t* cmatrix) {
SkMatrix matrix;
if (cmatrix) {
from_c_matrix(cmatrix, &matrix);
} else {
matrix.setIdentity();
}
return (sk_shader_t*)SkGradientShader::MakeSweep((SkScalar)(ccenter->x),
(SkScalar)(ccenter->y),
reinterpret_cast<const SkColor*>(colors),
reinterpret_cast<const SkScalar*>(colorPos),
colorCount, 0, &matrix).release();
}
void draw(SkCanvas* canvas) {
SkPaint black;
black.setAntiAlias(true);
black.setTextSize(48);
SkPaint gray = black;
gray.setColor(0xFF9f9f9f);
SkScalar offset[] = { 1.5f, 1.5f, 20, 1.5f, 1.5f, 20, .03f, .01f, 2 };
for (int i : { SkMatrix::kMScaleX, SkMatrix::kMSkewX, SkMatrix::kMTransX,
SkMatrix::kMSkewY, SkMatrix::kMScaleY, SkMatrix::kMTransY,
SkMatrix::kMPersp0, SkMatrix::kMPersp1, SkMatrix::kMPersp2 } ) {
SkMatrix m;
m.setIdentity();
m.set(i, offset[i]);
SkAutoCanvasRestore autoRestore(canvas, true);
canvas->translate(22 + (i % 3) * 88, 44 + (i / 3) * 88);
canvas->drawString("&", 0, 0, gray);
canvas->concat(m);
canvas->drawString("&", 0, 0, black);
}
}
sk_shader_t* sk_shader_new_linear_gradient(const sk_point_t pts[2],
const sk_color_t colors[],
const float colorPos[],
int colorCount,
sk_shader_tilemode_t cmode,
const sk_matrix_t* cmatrix) {
SkShader::TileMode mode;
if (!from_c_tilemode(cmode, &mode)) {
return NULL;
}
SkMatrix matrix;
if (cmatrix) {
from_c_matrix(cmatrix, &matrix);
} else {
matrix.setIdentity();
}
SkShader* s = SkGradientShader::CreateLinear(reinterpret_cast<const SkPoint*>(pts),
reinterpret_cast<const SkColor*>(colors),
colorPos, colorCount, mode, 0, &matrix);
return (sk_shader_t*)s;
}
sk_shader_t* sk_shader_new_radial_gradient(const sk_point_t* ccenter,
float radius,
const sk_color_t colors[],
const float colorPos[],
int colorCount,
sk_shader_tilemode_t cmode,
const sk_matrix_t* cmatrix) {
SkTileMode mode;
if (!from_c_tilemode(cmode, &mode)) {
return nullptr;
}
SkMatrix matrix;
if (cmatrix) {
from_c_matrix(cmatrix, &matrix);
} else {
matrix.setIdentity();
}
SkPoint center = to_skpoint(*ccenter);
return (sk_shader_t*)SkGradientShader::MakeRadial(center, (SkScalar)radius,
reinterpret_cast<const SkColor*>(colors),
reinterpret_cast<const SkScalar*>(colorPos),
colorCount, mode, 0, &matrix).release();
}
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());
}
void TextArtView::onDrawContent(SkCanvas* canvas)
{
const std::string TEXT = "Helpo TextArt Effects";
SkTypeface* typeface = SkTypeface::CreateFromName("Georgia", SkTypeface::kBold);
if (!initialized)
{
initialized = true;
WarpFrameT warpFrame;
SkMatrix warpMatrix;
warpMatrix.setIdentity();
getWarpParams(warpFrame, warpMatrix);
bSkeleton_ = warpFrame[0];
if (warpFrame.size()>1)
tSkeleton_ = warpFrame[1];
TextArt::EnvelopeWarp textArt(bSkeleton_, warpMatrix);
textArt.setTopSkeleton(tSkeleton_);
textArt.setIsNormalRotated(getIsNormalRotated());
textArt.setIsSymmetric(getIsSymmetric());
textArt.setIsTopBased(getIsTopBased());
path_ = textArt.warp(TEXT, typeface);
}
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(64));
paint.setStyle(SkPaint::kStroke_Style);
paint.setTypeface(typeface);
canvas->save();
//center path on the cnavas
const SkRect& pathBounds = path_.getBounds();
SkISize screenSize = canvas->getDeviceSize();
SkScalar xOffset = SkScalarHalf( SkIntToScalar(screenSize.width()) ) - pathBounds.centerX();
SkScalar yOffset = SkScalarHalf( SkIntToScalar(screenSize.height()) ) - pathBounds.centerY();
canvas->translate(xOffset, yOffset);
paint.setColor(0x33FF3333);
// canvas->drawRect(pathBounds, paint);
/*
paint.setColor(SK_ColorGREEN);
canvas->drawPath(textArt.bSkeleton_, paint);
canvas->drawPath(textArt.bWarped_, paint);
paint.setColor(SK_ColorCYAN);
canvas->drawPath(textArt.tSkeleton_, paint);
canvas->drawPath(textArt.tWarped_, paint);
*/
//draw the skeleton path
paint.setColor(SK_ColorBLUE);
canvas->drawPath(bSkeleton_, paint);
canvas->drawPath(tSkeleton_, paint);
//draw the path
paint.setColor(SK_ColorBLACK);
paint.setStyle(SkPaint::kFill_Style);
canvas->drawPath(path_, paint);
/*
paint.setColor(SK_ColorRED);
canvas->drawPath(textArt.normal, paint);
canvas->drawPath(textArt.tFlattern, paint);
for(int i=0; i<textArt.intersections.size(); ++i)
{
canvas->drawCircle(textArt.intersections[i].fX, textArt.intersections[i].fY, 1.5, paint);
}
*/
canvas->restore();
}
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());
#ifdef SK_SCALAR_IS_FLOAT
/* We bypass the following tests for SK_SCALAR_IS_FIXED build.
* The long discussion can be found in this issue:
* http://codereview.appspot.com/5999050/
* In short, we haven't found a perfect way to fix the precision
* issue, i.e. the way we use tolerance in isSimilarityTransformation
* is incorrect. The situation becomes worse in fixed build, so
* we disabled rotation related tests for fixed build.
*/
// 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());
#endif
// 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());
}
SkPath TextArt::EnvelopeWarp::warp(const std::string& text, SkTypeface* typeface)
{
SkPath warpedPath;
if (text.empty())
return warpedPath;
//prepare paint
SkPaint paint;
paint.setTextSize(SkIntToScalar(64));
paint.setTypeface(typeface);
paint.setTextAlign(SkPaint::kCenter_Align);
//measure Bottom path to center text on it
SkPathMeasure bMeasure(bSkeleton_, false);
SkScalar hBOffset = 0;
if (paint.getTextAlign() != SkPaint::kLeft_Align)
{
SkScalar pathLen = bMeasure.getLength();
if (paint.getTextAlign() == SkPaint::kCenter_Align)
{
pathLen = SkScalarHalf(pathLen);
}
hBOffset += pathLen;
}
//get text boundaries on normal(non-warped) state
{
SkMatrix scaleMartix;
scaleMartix.setIdentity();
SkTextToPathIter iter(text.c_str(), text.size(), paint, true);
const SkPath* glypthPath;
SkScalar xpos;
SkScalar scale = iter.getPathScale();
scaleMartix.setScale(scale, scale);
while (iter.next(&glypthPath, &xpos))
{
if (glypthPath)
{
//prepare resulting transformatiom Matrix
SkMatrix compositeMatrix(scaleMartix);
compositeMatrix.postTranslate(xpos + hBOffset, 0);
SkPath p;
(*glypthPath).transform(compositeMatrix, &p);
//get normal(without any warps) text boundaries
boundsRect_.join( p.getBounds() );
}
}
}
//center text on Top skeleton
SkPathMeasure tMeasure(tSkeleton_, false);
SkScalar hTOffset = 0;
{
if (paint.getTextAlign() != SkPaint::kLeft_Align)
{
SkScalar pathLen = tMeasure.getLength();
if (paint.getTextAlign() == SkPaint::kCenter_Align)
{
pathLen = SkScalarHalf(pathLen);
}
hTOffset += pathLen;
}
}
//warp text on Bottom and Top skeletons
{
SkTextToPathIter iter(text.c_str(), text.size(), paint, true);
SkScalar xpos;
SkMatrix scaleMartix;
SkScalar scale = iter.getPathScale();
scaleMartix.setScale(scale, scale);
SkPath line;
line.lineTo(SkIntToScalar(100), SkIntToScalar(0));
SkPathMeasure lineMeasure(line, false);
SkPathCrossing bCrossing(bSkeleton_);
SkPathCrossing tCrossing(tSkeleton_);
const SkPath* glypthPathOrig;
while (iter.next(&glypthPathOrig, &xpos))
{
if (glypthPathOrig)
{
SkPath glypthPath;
SkRect glypthBound;
glypthBound = (*glypthPathOrig).getBounds();
glypthPathOrig->offset(-glypthBound.fLeft, 0, &glypthPath);
morph(bSkeleton_, bMeasure, bCrossing,
tSkeleton_, tMeasure, tCrossing,
glypthPath, lineMeasure, scaleMartix,
xpos, hBOffset, hTOffset, warpedPath);
}
}
}
return warpedPath;
}
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));
#ifndef SK_CPU_ARM64
REPORTER_ASSERT(reporter, mat.isSimilarity());
#else
// 64-bit ARM devices built with -O2 and -ffp-contract=fast have a loss
// of precision and require that we have a higher tolerance
REPORTER_ASSERT(reporter, mat.isSimilarity(SK_ScalarNearlyZero + 0.00010113f));
#endif
}
// 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());
}