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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/SkPath.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);
- }
- void onOnceBeforeDraw() override {
- {
- const SkScalar w = SkScalarSqrt(2)/2;
- SkPath* conicCirlce = &fPaths.push_back();
- conicCirlce->moveTo(0, 0);
- conicCirlce->conicTo(0, 50, 50, 50, w);
- conicCirlce->rConicTo(50, 0, 50, -50, w);
- conicCirlce->rConicTo(0, -50, -50, -50, w);
- conicCirlce->rConicTo(-50, 0, -50, 50, w);
- }
- {
- SkPath* hyperbola = &fPaths.push_back();
- hyperbola->moveTo(0, 0);
- hyperbola->conicTo(0, 100, 100, 100, 2);
- }
- {
- SkPath* thinHyperbola = &fPaths.push_back();
- thinHyperbola->moveTo(0, 0);
- thinHyperbola->conicTo(100, 100, 5, 0, 2);
- }
- {
- SkPath* veryThinHyperbola = &fPaths.push_back();
- veryThinHyperbola->moveTo(0, 0);
- veryThinHyperbola->conicTo(100, 100, 1, 0, 2);
- }
- {
- SkPath* closedHyperbola = &fPaths.push_back();
- closedHyperbola->moveTo(0, 0);
- closedHyperbola->conicTo(100, 100, 0, 0, 2);
- }
- {
- // using 1 as weight defaults to using quadTo
- SkPath* nearParabola = &fPaths.push_back();
- nearParabola->moveTo(0, 0);
- nearParabola->conicTo(0, 100, 100, 100, 0.999f);
- }
- {
- SkPath* thinEllipse = &fPaths.push_back();
- thinEllipse->moveTo(0, 0);
- thinEllipse->conicTo(100, 100, 5, 0, SK_ScalarHalf);
- }
- {
- SkPath* veryThinEllipse = &fPaths.push_back();
- veryThinEllipse->moveTo(0, 0);
- veryThinEllipse->conicTo(100, 100, 1, 0, SK_ScalarHalf);
- }
- {
- SkPath* closedEllipse = &fPaths.push_back();
- closedEllipse->moveTo(0, 0);
- closedEllipse->conicTo(100, 100, 0, 0, SK_ScalarHalf);
- }
- {
- const SkScalar w = SkScalarSqrt(2)/2;
- fGiantCircle.moveTo(2.1e+11f, -1.05e+11f);
- fGiantCircle.conicTo(2.1e+11f, 0, 1.05e+11f, 0, w);
- fGiantCircle.conicTo(0, 0, 0, -1.05e+11f, w);
- fGiantCircle.conicTo(0, -2.1e+11f, 1.05e+11f, -2.1e+11f, w);
- fGiantCircle.conicTo(2.1e+11f, -2.1e+11f, 2.1e+11f, -1.05e+11f, w);
- }
- }
- 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.setStyle(fh ? SkPaint::kStroke_Style : SkPaint::kFill_Style);
- 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.setStyle(SkPaint::kStroke_Style);
- canvas->drawCircle(c, radius, paint);
- SkPath path;
- path.moveTo(288.88884710654133f, -280.26680862609f);
- path.arcTo(0, 0, -39.00216443306411f, 400.6058925796476f, radius);
- 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.setStyle(SkPaint::kStroke_Style);
- 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.setStyle(SkPaint::kStroke_Style);
- 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.setStyle(SkPaint::kStroke_Style);
- 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) {
- SkPath 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, paint);
- }
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