diff options
author | robertphillips <robertphillips@google.com> | 2016-04-08 13:35:14 -0700 |
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committer | Commit bot <commit-bot@chromium.org> | 2016-04-08 13:35:14 -0700 |
commit | 651bb5fafe1edd723425dffd478dfa67b113da73 (patch) | |
tree | 4699dc4326f07711b94016f39110b4bbc1d74b04 /gm/dashcircle.cpp | |
parent | 7cbffda6c85e0634399d74607db2a82943abe06a (diff) |
Make some GMs animate
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1870133003
Review URL: https://codereview.chromium.org/1870133003
Diffstat (limited to 'gm/dashcircle.cpp')
-rw-r--r-- | gm/dashcircle.cpp | 128 |
1 files changed, 80 insertions, 48 deletions
diff --git a/gm/dashcircle.cpp b/gm/dashcircle.cpp index a02c7d0f7b..f631c40476 100644 --- a/gm/dashcircle.cpp +++ b/gm/dashcircle.cpp @@ -6,6 +6,7 @@ */ #include "gm.h" +#include "SkAnimTimer.h" #include "SkPath.h" #include "SkDashPathEffect.h" @@ -24,55 +25,86 @@ struct DashExample { { dash4, SK_ARRAY_COUNT(dash4) } }; -DEF_SIMPLE_GM(dashcircle, canvas, 900, 1200) { - SkPaint refPaint; - refPaint.setAntiAlias(true); - refPaint.setColor(0xFFbf3f7f); - refPaint.setStyle(SkPaint::kStroke_Style); - refPaint.setStrokeWidth(1); - const SkScalar radius = 125; - SkRect oval = SkRect::MakeLTRB(-radius - 20, -radius - 20, radius + 20, radius + 20); - SkPath circle; - circle.addCircle(0, 0, radius); - SkScalar circumference = radius * SK_ScalarPI * 2; - int wedges[] = { 6, 12, 36 }; - canvas->translate(radius + 20, radius + 20); - for (int wedge : wedges) { - SkScalar arcLength = 360.f / wedge; - canvas->save(); - for (const DashExample& dashExample : dashExamples) { - SkPath refPath; - int dashUnits = 0; - for (int index = 0; index < dashExample.length; ++index) { - dashUnits += dashExample.pattern[index]; - } - SkScalar unitLength = arcLength / dashUnits; - SkScalar angle = 0; - for (int index = 0; index < wedge; ++index) { - for (int i2 = 0; i2 < dashExample.length; i2 += 2) { - SkScalar span = dashExample.pattern[i2] * unitLength; - refPath.moveTo(0, 0); - refPath.arcTo(oval, angle, span, false); - refPath.close(); - angle += span + (dashExample.pattern[i2 + 1]) * unitLength; + +class DashCircleGM : public skiagm::GM { +public: + DashCircleGM() : fRotation(0) { } + +protected: + SkString onShortName() override { return SkString("dashcircle"); } + + SkISize onISize() override { return SkISize::Make(900, 1200); } + + void onDraw(SkCanvas* canvas) override { + SkPaint refPaint; + refPaint.setAntiAlias(true); + refPaint.setColor(0xFFbf3f7f); + refPaint.setStyle(SkPaint::kStroke_Style); + refPaint.setStrokeWidth(1); + const SkScalar radius = 125; + SkRect oval = SkRect::MakeLTRB(-radius - 20, -radius - 20, radius + 20, radius + 20); + SkPath circle; + circle.addCircle(0, 0, radius); + SkScalar circumference = radius * SK_ScalarPI * 2; + int wedges[] = { 6, 12, 36 }; + canvas->translate(radius+20, radius+20); + for (int wedge : wedges) { + SkScalar arcLength = 360.f / wedge; + canvas->save(); + for (const DashExample& dashExample : dashExamples) { + SkPath refPath; + int dashUnits = 0; + for (int index = 0; index < dashExample.length; ++index) { + dashUnits += dashExample.pattern[index]; } + SkScalar unitLength = arcLength / dashUnits; + SkScalar angle = 0; + for (int index = 0; index < wedge; ++index) { + for (int i2 = 0; i2 < dashExample.length; i2 += 2) { + SkScalar span = dashExample.pattern[i2] * unitLength; + refPath.moveTo(0, 0); + refPath.arcTo(oval, angle, span, false); + refPath.close(); + angle += span + (dashExample.pattern[i2 + 1]) * unitLength; + } + } + canvas->save(); + canvas->rotate(fRotation); + canvas->drawPath(refPath, refPaint); + canvas->restore(); + SkPaint p; + p.setAntiAlias(true); + p.setStyle(SkPaint::kStroke_Style); + p.setStrokeWidth(10); + SkScalar intervals[4]; + int intervalCount = dashExample.length; + SkScalar dashLength = circumference / wedge / dashUnits; + for (int index = 0; index < dashExample.length; ++index) { + intervals[index] = dashExample.pattern[index] * dashLength; + } + p.setPathEffect(SkDashPathEffect::Make(intervals, intervalCount, 0)); + canvas->save(); + canvas->rotate(fRotation); + canvas->drawPath(circle, p); + canvas->restore(); + canvas->translate(0, radius * 2 + 50); } - canvas->drawPath(refPath, refPaint); - SkPaint p; - p.setAntiAlias(true); - p.setStyle(SkPaint::kStroke_Style); - p.setStrokeWidth(10); - SkScalar intervals[4]; - int intervalCount = dashExample.length; - SkScalar dashLength = circumference / wedge / dashUnits; - for (int index = 0; index < dashExample.length; ++index) { - intervals[index] = dashExample.pattern[index] * dashLength; - } - p.setPathEffect(SkDashPathEffect::Make(intervals, intervalCount, 0)); - canvas->drawPath(circle, p); - canvas->translate(0, radius * 2 + 50); + canvas->restore(); + canvas->translate(radius * 2 + 50, 0); } - canvas->restore(); - canvas->translate(radius * 2 + 50, 0); } -} + + bool onAnimate(const SkAnimTimer& timer) override { + static const SkScalar kDesiredDurationSecs = 100.0f; + + fRotation = timer.scaled(360.0f/kDesiredDurationSecs, 360.0f); + return true; + } + +private: + SkScalar fRotation; + + typedef GM INHERITED; +}; + +DEF_GM(return new DashCircleGM; ) |