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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPathBuilder.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "include/private/SkFloatBits.h"
#include "include/private/SkTArray.h"
class ConicPathsGM : public skiagm::GM {
protected:
SkString onShortName() override {
return SkString("conicpaths");
}
SkISize onISize() override {
return SkISize::Make(920, 960);
}
template <typename Proc> void append_path(Proc proc) {
SkPathBuilder b;
proc(&b);
fPaths.push_back(b.detach());
}
void onOnceBeforeDraw() override {
this->append_path([](SkPathBuilder* conicCircle) {
const SkScalar w = SkScalarSqrt(2)/2;
conicCircle->moveTo(0, 0);
conicCircle->conicTo(0, 50, 50, 50, w);
conicCircle->rConicTo(50, 0, 50, -50, w);
conicCircle->rConicTo(0, -50, -50, -50, w);
conicCircle->rConicTo(-50, 0, -50, 50, w);
});
this->append_path([](SkPathBuilder* hyperbola) {
hyperbola->moveTo(0, 0);
hyperbola->conicTo(0, 100, 100, 100, 2);
});
this->append_path([](SkPathBuilder* thinHyperbola) {
thinHyperbola->moveTo(0, 0);
thinHyperbola->conicTo(100, 100, 5, 0, 2);
});
this->append_path([](SkPathBuilder* veryThinHyperbola) {
veryThinHyperbola->moveTo(0, 0);
veryThinHyperbola->conicTo(100, 100, 1, 0, 2);
});
this->append_path([](SkPathBuilder* closedHyperbola) {
closedHyperbola->moveTo(0, 0);
closedHyperbola->conicTo(100, 100, 0, 0, 2);
});
this->append_path([](SkPathBuilder* nearParabola) {
// using 1 as weight defaults to using quadTo
nearParabola->moveTo(0, 0);
nearParabola->conicTo(0, 100, 100, 100, 0.999f);
});
this->append_path([](SkPathBuilder* thinEllipse) {
thinEllipse->moveTo(0, 0);
thinEllipse->conicTo(100, 100, 5, 0, SK_ScalarHalf);
});
this->append_path([](SkPathBuilder* veryThinEllipse) {
veryThinEllipse->moveTo(0, 0);
veryThinEllipse->conicTo(100, 100, 1, 0, SK_ScalarHalf);
});
this->append_path([](SkPathBuilder* closedEllipse) {
closedEllipse->moveTo(0, 0);
closedEllipse->conicTo(100, 100, 0, 0, SK_ScalarHalf);
});
{
SkPathBuilder b;
const SkScalar w = SkScalarSqrt(2)/2;
b.moveTo(2.1e+11f, -1.05e+11f);
b.conicTo(2.1e+11f, 0, 1.05e+11f, 0, w);
b.conicTo(0, 0, 0, -1.05e+11f, w);
b.conicTo(0, -2.1e+11f, 1.05e+11f, -2.1e+11f, w);
b.conicTo(2.1e+11f, -2.1e+11f, 2.1e+11f, -1.05e+11f, w);
fGiantCircle = b.detach();
}
}
void drawGiantCircle(SkCanvas* canvas) {
SkPaint paint;
canvas->drawPath(fGiantCircle, paint);
}
void onDraw(SkCanvas* canvas) override {
const SkAlpha kAlphaValue[] = { 0xFF, 0x40 };
const SkScalar margin = 15;
canvas->translate(margin, margin);
SkPaint paint;
for (int p = 0; p < fPaths.count(); ++p) {
canvas->save();
for (size_t a = 0; a < SK_ARRAY_COUNT(kAlphaValue); ++a) {
paint.setARGB(kAlphaValue[a], 0, 0, 0);
for (int aa = 0; aa < 2; ++aa) {
paint.setAntiAlias(SkToBool(aa));
for (int fh = 0; fh < 2; ++fh) {
paint.setStroke(fh != 0);
const SkRect& bounds = fPaths[p].getBounds();
canvas->save();
canvas->translate(-bounds.fLeft, -bounds.fTop);
canvas->drawPath(fPaths[p], paint);
canvas->restore();
canvas->translate(110, 0);
}
}
}
canvas->restore();
canvas->translate(0, 110);
}
canvas->restore();
this->drawGiantCircle(canvas);
}
private:
SkTArray<SkPath> fPaths;
SkPath fGiantCircle;
typedef skiagm::GM INHERITED;
};
DEF_GM(return new ConicPathsGM;)
//////////////////////////////////////////////////////////////////////////////
/* arc should be on top of circle */
DEF_SIMPLE_GM(arccirclegap, canvas, 250, 250) {
canvas->translate(50, 100);
SkPoint c = { 1052.5390625f, 506.8760978034711f };
SkScalar radius = 1096.702150363923f;
SkPaint paint;
paint.setAntiAlias(true);
paint.setStroke(true);
canvas->drawCircle(c, radius, paint);
SkPath path = SkPathBuilder().moveTo(288.88884710654133f, -280.26680862609f)
.arcTo({0, 0}, {-39.00216443306411f, 400.6058925796476f}, radius)
.detach();
paint.setColor(0xff007f00);
canvas->drawPath(path, paint);
}
/* circle should be antialiased */
DEF_SIMPLE_GM(largecircle, canvas, 250, 250) {
canvas->translate(50, 100);
SkPoint c = { 1052.5390625f, 506.8760978034711f };
SkScalar radius = 1096.702150363923f;
SkPaint paint;
paint.setAntiAlias(true);
paint.setStroke(true);
canvas->drawCircle(c, radius, paint);
}
/* ovals should not be blurry */
DEF_SIMPLE_GM(largeovals, canvas, 250, 250) {
// Test EllipseOp
SkRect r = SkRect::MakeXYWH(-520, -520, 5000, 4000);
SkPaint paint;
paint.setAntiAlias(true);
paint.setStroke(true);
paint.setStrokeWidth(100);
canvas->drawOval(r, paint);
r.offset(-15, -15);
paint.setColor(SK_ColorDKGRAY);
// we use stroke and fill to avoid falling into the SimpleFill path
paint.setStyle(SkPaint::kStrokeAndFill_Style);
paint.setStrokeWidth(1);
canvas->drawOval(r, paint);
// Test DIEllipseOp
canvas->rotate(1.0f);
r.offset(55, 55);
paint.setColor(SK_ColorGRAY);
paint.setStroke(true);
paint.setStrokeWidth(100);
canvas->drawOval(r, paint);
r.offset(-15, -15);
paint.setColor(SK_ColorLTGRAY);
paint.setStyle(SkPaint::kStrokeAndFill_Style);
paint.setStrokeWidth(1);
canvas->drawOval(r, paint);
}
DEF_SIMPLE_GM(crbug_640176, canvas, 250, 250) {
SkPathBuilder path;
path.moveTo(SkBits2Float(0x00000000), SkBits2Float(0x00000000)); // 0, 0
path.lineTo(SkBits2Float(0x42cfd89a), SkBits2Float(0xc2700000)); // 103.923f, -60
path.lineTo(SkBits2Float(0x42cfd899), SkBits2Float(0xc2700006)); // 103.923f, -60
path.conicTo(SkBits2Float(0x42f00000), SkBits2Float(0xc2009d9c),
SkBits2Float(0x42f00001), SkBits2Float(0x00000000),
SkBits2Float(0x3f7746ea)); // 120, -32.1539f, 120, 0, 0.965926f
SkPaint paint;
paint.setAntiAlias(true);
canvas->translate(125, 125);
canvas->drawPath(path.detach(), paint);
}