diff options
author | robertphillips <robertphillips@google.com> | 2016-08-04 12:35:46 -0700 |
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committer | Commit bot <commit-bot@chromium.org> | 2016-08-04 12:35:46 -0700 |
commit | 401c1968a1727b7dd1543f7e5536ca544fc6d752 (patch) | |
tree | 6c3149fdb57b5b9b4a59e2162117e50519433264 /gm/occludedrrectblur.cpp | |
parent | 1ba1d372c2727db56021d0687825320b12d10d4e (diff) |
Add new GM for occluded blurmask filter draws
This splits out just the GM portion of https://codereview.chromium.org/2201993003/ (Add GM to test out blurmaskfilter occluders) which included some API changes
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2214033002
Review-Url: https://codereview.chromium.org/2214033002
Diffstat (limited to 'gm/occludedrrectblur.cpp')
-rw-r--r-- | gm/occludedrrectblur.cpp | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/gm/occludedrrectblur.cpp b/gm/occludedrrectblur.cpp new file mode 100644 index 0000000000..da2bf5d38e --- /dev/null +++ b/gm/occludedrrectblur.cpp @@ -0,0 +1,320 @@ +/* + * Copyright 2016 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" +#include "SkBlurMaskFilter.h" +#include "SkRRect.h" +#include "sk_tool_utils.h" + +static SkRect offset_center_to(const SkIRect& src, SkScalar x, SkScalar y) { + SkScalar halfW = 0.5f * src.width(); + SkScalar halfH = 0.5f * src.height(); + + return SkRect::MakeLTRB(x - halfW, y - halfH, x + halfW, y + halfH); +} + +static void draw_rrect(SkCanvas* canvas, const SkRRect& rr, const SkRRect& occRR) { + const SkScalar kBlurSigma = 5.0f; + + SkRect occRect; + SkColor strokeColor; + + { + SkRect occRect1 = sk_tool_utils::compute_central_occluder(occRR); + SkRect occRect2 = sk_tool_utils::compute_widest_occluder(occRR); + SkRect occRect3 = sk_tool_utils::compute_tallest_occluder(occRR); + + SkScalar area1 = occRect1.width() * occRect1.height(); + SkScalar area2 = occRect2.width() * occRect2.height(); + SkScalar area3 = occRect3.width() * occRect3.height(); + + if (area1 >= area2 && area1 >= area3) { + strokeColor = SK_ColorRED; + occRect = occRect1; + } else if (area2 > area3) { + strokeColor = SK_ColorYELLOW; + occRect = occRect2; + } else { + strokeColor = SK_ColorCYAN; + occRect = occRect3; + } + } + + // draw the blur + SkPaint paint; + paint.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle, kBlurSigma)); //, occRect)); + canvas->drawRRect(rr, paint); + + // draw the stroked geometry of the full occluder + SkPaint stroke; + stroke.setStyle(SkPaint::kStroke_Style); + stroke.setColor(SK_ColorBLUE); + canvas->drawRRect(occRR, stroke); + + // draw the geometry of the occluding rect + stroke.setColor(strokeColor); + canvas->drawRect(occRect, stroke); +} + +static void draw_45(SkCanvas* canvas, SkRRect::Corner corner, + SkScalar dist, const SkPoint& center) { + SkRRect::Corner left = SkRRect::kUpperLeft_Corner, right = SkRRect::kUpperLeft_Corner; + SkVector dir = { 0, 0 }; + + static const SkScalar kSize = 64.0f / SK_ScalarSqrt2; + + switch (corner) { + case SkRRect::kUpperLeft_Corner: + left = SkRRect::kUpperRight_Corner; + right = SkRRect::kLowerLeft_Corner; + + dir.set(-SK_ScalarRoot2Over2, -SK_ScalarRoot2Over2); + break; + case SkRRect::kUpperRight_Corner: + left = SkRRect::kUpperLeft_Corner; + right = SkRRect::kLowerRight_Corner; + dir.set(SK_ScalarRoot2Over2, -SK_ScalarRoot2Over2); + break; + case SkRRect::kLowerRight_Corner: + left = SkRRect::kLowerLeft_Corner; + right = SkRRect::kUpperRight_Corner; + dir.set(SK_ScalarRoot2Over2, SK_ScalarRoot2Over2); + break; + case SkRRect::kLowerLeft_Corner: + left = SkRRect::kLowerRight_Corner; + right = SkRRect::kUpperLeft_Corner; + dir.set(-SK_ScalarRoot2Over2, SK_ScalarRoot2Over2); + break; + default: + SkFAIL("Invalid shape."); + } + + SkRect r = SkRect::MakeWH(kSize, kSize); + // UL, UR, LR, LL + SkVector radii[4] = { { 0.0f, 0.0f }, { 0.0f, 0.0f }, { 0.0f, 0.0f }, { 0.0f, 0.0f } }; + radii[left] = SkVector::Make(kSize, kSize); + radii[right] = SkVector::Make(kSize, kSize); + SkRRect rr; + rr.setRectRadii( + offset_center_to(r.roundOut(), center.fX + dist*dir.fX, center.fY + dist*dir.fY), + radii); + + SkRRect occRR; + dist -= 10.0f; + occRR.setRectRadii( + offset_center_to(r.roundOut(), center.fX + dist*dir.fX, center.fY + dist*dir.fY), + radii); + + draw_rrect(canvas, rr, occRR); +} + +static void draw_45_simple(SkCanvas* canvas, const SkVector& v, + SkScalar dist, const SkPoint& center) { + SkIRect r = SkIRect::MakeWH(64, 64); + SkRRect rr = SkRRect::MakeRectXY( + offset_center_to(r, center.fX + dist*v.fX, center.fY + dist*v.fY), + 8, 8); + + dist -= 10.0f; + SkRRect occRR = SkRRect::MakeRectXY( + offset_center_to(r, center.fX + dist*v.fX, center.fY + dist*v.fY), + 8, 8); + + draw_rrect(canvas, rr, occRR); +} + +static void draw_90(SkCanvas* canvas, const SkVector& v, SkScalar dist, const SkPoint& center) { + static const int kWidth = 25; + + SkIRect r; + if (fabs(v.fX) < fabs(v.fY)) { + r = SkIRect::MakeWH(kWidth, 64); + } else { + r = SkIRect::MakeWH(64, kWidth); + } + SkRRect rr = SkRRect::MakeOval( + offset_center_to(r, center.fX + dist*v.fX, center.fY + dist*v.fY)); + + dist -= 10.0f; + SkRRect occRR = SkRRect::MakeOval( + offset_center_to(r, center.fX + dist*v.fX, center.fY + dist*v.fY)); + + draw_rrect(canvas, rr, occRR); +} + +static void draw_90_simple(SkCanvas* canvas, const SkVector& v, + SkScalar dist, const SkPoint& center) { + static const int kLength = 128; + static const int kWidth = 32; + + SkIRect r; + if (fabs(v.fX) < fabs(v.fY)) { + r = SkIRect::MakeWH(kLength, kWidth); + } else { + r = SkIRect::MakeWH(kWidth, kLength); + } + SkRRect rr = SkRRect::MakeRectXY( + offset_center_to(r, center.fX + dist*v.fX, center.fY + dist*v.fY), + 8, 8); + + dist -= 10.0f; + SkRRect occRR = SkRRect::MakeRectXY( + offset_center_to(r, center.fX + dist*v.fX, center.fY + dist*v.fY), + 8, 8); + + draw_rrect(canvas, rr, occRR); +} + +static void draw_30_60(SkCanvas* canvas, SkRRect::Corner corner, const SkVector& v, + SkScalar dist, const SkPoint& center) { + SkRRect::Corner left = SkRRect::kUpperLeft_Corner, right = SkRRect::kUpperLeft_Corner; + + static const int kLength = 64; + static const int kWidth = 30; + + switch (corner) { + case SkRRect::kUpperLeft_Corner: + left = SkRRect::kUpperRight_Corner; + right = SkRRect::kLowerLeft_Corner; + break; + case SkRRect::kUpperRight_Corner: + left = SkRRect::kUpperLeft_Corner; + right = SkRRect::kLowerRight_Corner; + break; + case SkRRect::kLowerRight_Corner: + left = SkRRect::kLowerLeft_Corner; + right = SkRRect::kUpperRight_Corner; + break; + case SkRRect::kLowerLeft_Corner: + left = SkRRect::kLowerRight_Corner; + right = SkRRect::kUpperLeft_Corner; + break; + default: + SkFAIL("Invalid shape."); + } + + SkIRect r; + if (fabs(v.fX) < fabs(v.fY)) { + r = SkIRect::MakeWH(kLength, kWidth); + } else { + r = SkIRect::MakeWH(kWidth, kLength); + } + // UL, UR, LR, LL + SkVector radii[4] = { { 0.0f, 0.0f }, { 0.0f, 0.0f }, { 0.0f, 0.0f }, { 0.0f, 0.0f } }; + radii[left] = SkVector::Make(SkIntToScalar(kWidth), SkIntToScalar(kWidth)); + radii[right] = SkVector::Make(SkIntToScalar(kWidth), SkIntToScalar(kWidth)); + SkRRect rr; + rr.setRectRadii(offset_center_to(r, center.fX + dist*v.fX, center.fY + dist*v.fY), radii); + + dist -= 10.0f; + SkRRect occRR; + occRR.setRectRadii(offset_center_to(r, center.fX + dist*v.fX, center.fY + dist*v.fY), radii); + draw_rrect(canvas, rr, occRR); +} + +namespace skiagm { + +class OccludedRRectBlurGM : public GM { +public: + OccludedRRectBlurGM() { + this->setBGColor(sk_tool_utils::color_to_565(0xFFCCCCCC)); + } + +protected: + + SkString onShortName() override { + return SkString("occludedrrectblur"); + } + + SkISize onISize() override { + return SkISize::Make(kWidth, kHeight); + } + + void onDraw(SkCanvas* canvas) override { + const SkPoint center = SkPoint::Make(kWidth/2, kHeight/2); + + // outer-most big RR + { + SkIRect r = SkIRect::MakeWH(420, 420); + SkRRect rr = SkRRect::MakeRectXY(offset_center_to(r, center.fX, center.fY), 64, 64); + draw_rrect(canvas, rr, rr); + +#if 1 + // TODO: remove this. Until we actually start skipping the middle draw we need this + // to provide contrast + SkPaint temp; + temp.setColor(sk_tool_utils::color_to_565(0xFFCCCCCC)); + r.inset(32, 32); + canvas->drawRect(offset_center_to(r, center.fX, center.fY), temp); +#endif + } + + // center circle + { + SkIRect r = SkIRect::MakeWH(32, 32); + SkRRect rr = SkRRect::MakeOval(offset_center_to(r, center.fX, center.fY)); + draw_rrect(canvas, rr, rr); + } + + draw_45(canvas, SkRRect::kUpperLeft_Corner, 64, center); + draw_45(canvas, SkRRect::kUpperRight_Corner, 64, center); + draw_45(canvas, SkRRect::kLowerRight_Corner, 64, center); + draw_45(canvas, SkRRect::kLowerLeft_Corner, 64, center); + + draw_90(canvas, SkVector::Make(-1.0f, 0.0f), 64, center); + draw_90(canvas, SkVector::Make(0.0f, -1.0f), 64, center); + draw_90(canvas, SkVector::Make(1.0f, 0.0f), 64, center); + draw_90(canvas, SkVector::Make(0.0f, 1.0f), 64, center); + + static const SkScalar kRoot3Over2 = 0.8660254037844386f; + + draw_30_60(canvas, SkRRect::kLowerLeft_Corner, + SkVector::Make(0.5f, kRoot3Over2), 120, center); + draw_30_60(canvas, SkRRect::kUpperRight_Corner, + SkVector::Make(kRoot3Over2, 0.5f), 120, center); + + draw_30_60(canvas, SkRRect::kUpperLeft_Corner, + SkVector::Make(-0.5f, kRoot3Over2), 120, center); + draw_30_60(canvas, SkRRect::kLowerRight_Corner, + SkVector::Make(-kRoot3Over2, 0.5f), 120, center); + + draw_30_60(canvas, SkRRect::kLowerLeft_Corner, + SkVector::Make(-0.5f, -kRoot3Over2), 120, center); + draw_30_60(canvas, SkRRect::kUpperRight_Corner, + SkVector::Make(-kRoot3Over2, -0.5f), 120, center); + + draw_30_60(canvas, SkRRect::kUpperLeft_Corner, + SkVector::Make(0.5f, -kRoot3Over2), 120, center); + draw_30_60(canvas, SkRRect::kLowerRight_Corner, + SkVector::Make(kRoot3Over2, -0.5f), 120, center); + + draw_45_simple(canvas, SkVector::Make(-SK_ScalarRoot2Over2, -SK_ScalarRoot2Over2), + 190, center); + draw_45_simple(canvas, SkVector::Make(SK_ScalarRoot2Over2, -SK_ScalarRoot2Over2), + 190, center); + draw_45_simple(canvas, SkVector::Make(SK_ScalarRoot2Over2, SK_ScalarRoot2Over2), + 190, center); + draw_45_simple(canvas, SkVector::Make(-SK_ScalarRoot2Over2, SK_ScalarRoot2Over2), + 190, center); + + draw_90_simple(canvas, SkVector::Make(-1.0f, 0.0f), 150, center); + draw_90_simple(canvas, SkVector::Make(0.0f, -1.0f), 150, center); + draw_90_simple(canvas, SkVector::Make(1.0f, 0.0f), 150, center); + draw_90_simple(canvas, SkVector::Make(0.0f, 1.0f), 150, center); + } + +private: + static const int kWidth = 440; + static const int kHeight = 440; + + typedef GM INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +DEF_GM(return new OccludedRRectBlurGM;) +} |