04b9443274
Encountered while debugging new GrClipStack. Basically, with the old checks, if aCorner == bCorner but A was a rect, we'd end up rejecting it as not a viable intersection (failing the testCorner == aCorner checks), but wouldn't fall through to the testCorner == bCorner checks. Instead of splitting the if-elseif-else into separate ifs, I chose to add an additional if case that lets the ellipse containment check match a few more cases when we know the two ellipses share an anchor point. Change-Id: I6c8bc9a30d19a56f25da7d9be7832ff72dde1765 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/315636 Reviewed-by: Jim Van Verth <jvanverth@google.com> Commit-Queue: Michael Ludwig <michaelludwig@google.com>
1318 lines
55 KiB
C++
1318 lines
55 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkMatrix.h"
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#include "include/core/SkRRect.h"
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#include "include/pathops/SkPathOps.h"
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#include "include/utils/SkRandom.h"
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#include "src/core/SkPointPriv.h"
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#include "src/core/SkRRectPriv.h"
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#include "tests/Test.h"
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static void test_tricky_radii(skiatest::Reporter* reporter) {
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{
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// crbug.com/458522
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SkRRect rr;
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const SkRect bounds = { 3709, 3709, 3709 + 7402, 3709 + 29825 };
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const SkScalar rad = 12814;
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const SkVector vec[] = { { rad, rad }, { 0, rad }, { rad, rad }, { 0, rad } };
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rr.setRectRadii(bounds, vec);
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}
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{
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// crbug.com//463920
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SkRect r = SkRect::MakeLTRB(0, 0, 1009, 33554432.0);
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SkVector radii[4] = {
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{ 13.0f, 8.0f }, { 170.0f, 2.0 }, { 256.0f, 33554432.0 }, { 110.0f, 5.0f }
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};
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SkRRect rr;
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rr.setRectRadii(r, radii);
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REPORTER_ASSERT(reporter, (double) rr.radii(SkRRect::kUpperRight_Corner).fY +
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(double) rr.radii(SkRRect::kLowerRight_Corner).fY <=
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rr.height());
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}
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}
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static void test_empty_crbug_458524(skiatest::Reporter* reporter) {
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SkRRect rr;
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const SkRect bounds = { 3709, 3709, 3709 + 7402, 3709 + 29825 };
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const SkScalar rad = 40;
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rr.setRectXY(bounds, rad, rad);
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SkRRect other;
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SkMatrix matrix;
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matrix.setScale(0, 1);
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rr.transform(matrix, &other);
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REPORTER_ASSERT(reporter, SkRRect::kEmpty_Type == other.getType());
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}
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// Test that all the SkRRect entry points correctly handle un-sorted and
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// zero-sized input rects
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static void test_empty(skiatest::Reporter* reporter) {
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static const SkRect oooRects[] = { // out of order
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{ 100, 0, 0, 100 }, // ooo horizontal
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{ 0, 100, 100, 0 }, // ooo vertical
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{ 100, 100, 0, 0 }, // ooo both
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};
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static const SkRect emptyRects[] = {
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{ 100, 100, 100, 200 }, // empty horizontal
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{ 100, 100, 200, 100 }, // empty vertical
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{ 100, 100, 100, 100 }, // empty both
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{ 0, 0, 0, 0 } // setEmpty-empty
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};
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static const SkVector radii[4] = { { 0, 1 }, { 2, 3 }, { 4, 5 }, { 6, 7 } };
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SkRRect r;
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for (size_t i = 0; i < SK_ARRAY_COUNT(oooRects); ++i) {
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r.setRect(oooRects[i]);
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REPORTER_ASSERT(reporter, !r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == oooRects[i].makeSorted());
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r.setOval(oooRects[i]);
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REPORTER_ASSERT(reporter, !r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == oooRects[i].makeSorted());
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r.setRectXY(oooRects[i], 1, 2);
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REPORTER_ASSERT(reporter, !r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == oooRects[i].makeSorted());
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r.setNinePatch(oooRects[i], 0, 1, 2, 3);
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REPORTER_ASSERT(reporter, !r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == oooRects[i].makeSorted());
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r.setRectRadii(oooRects[i], radii);
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REPORTER_ASSERT(reporter, !r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == oooRects[i].makeSorted());
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}
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for (size_t i = 0; i < SK_ARRAY_COUNT(emptyRects); ++i) {
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r.setRect(emptyRects[i]);
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REPORTER_ASSERT(reporter, r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == emptyRects[i]);
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r.setOval(emptyRects[i]);
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REPORTER_ASSERT(reporter, r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == emptyRects[i]);
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r.setRectXY(emptyRects[i], 1, 2);
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REPORTER_ASSERT(reporter, r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == emptyRects[i]);
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r.setNinePatch(emptyRects[i], 0, 1, 2, 3);
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REPORTER_ASSERT(reporter, r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == emptyRects[i]);
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r.setRectRadii(emptyRects[i], radii);
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REPORTER_ASSERT(reporter, r.isEmpty());
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REPORTER_ASSERT(reporter, r.rect() == emptyRects[i]);
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}
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r.setRect({SK_ScalarNaN, 10, 10, 20});
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REPORTER_ASSERT(reporter, r == SkRRect::MakeEmpty());
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r.setRect({0, 10, 10, SK_ScalarInfinity});
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REPORTER_ASSERT(reporter, r == SkRRect::MakeEmpty());
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}
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static const SkScalar kWidth = 100.0f;
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static const SkScalar kHeight = 100.0f;
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static void test_inset(skiatest::Reporter* reporter) {
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SkRRect rr, rr2;
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SkRect r = { 0, 0, 100, 100 };
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rr.setRect(r);
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rr.inset(-20, -20, &rr2);
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REPORTER_ASSERT(reporter, rr2.isRect());
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rr.inset(20, 20, &rr2);
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REPORTER_ASSERT(reporter, rr2.isRect());
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rr.inset(r.width()/2, r.height()/2, &rr2);
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REPORTER_ASSERT(reporter, rr2.isEmpty());
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rr.setRectXY(r, 20, 20);
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rr.inset(19, 19, &rr2);
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REPORTER_ASSERT(reporter, rr2.isSimple());
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rr.inset(20, 20, &rr2);
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REPORTER_ASSERT(reporter, rr2.isRect());
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}
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static void test_9patch_rrect(skiatest::Reporter* reporter,
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const SkRect& rect,
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SkScalar l, SkScalar t, SkScalar r, SkScalar b,
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bool checkRadii) {
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SkRRect rr;
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rr.setNinePatch(rect, l, t, r, b);
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REPORTER_ASSERT(reporter, SkRRect::kNinePatch_Type == rr.type());
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REPORTER_ASSERT(reporter, rr.rect() == rect);
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if (checkRadii) {
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// This test doesn't hold if the radii will be rescaled by SkRRect
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SkRect ninePatchRadii = { l, t, r, b };
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SkPoint rquad[4];
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ninePatchRadii.toQuad(rquad);
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for (int i = 0; i < 4; ++i) {
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REPORTER_ASSERT(reporter, rquad[i] == rr.radii((SkRRect::Corner) i));
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}
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}
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SkRRect rr2; // construct the same RR using the most general set function
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SkVector radii[4] = { { l, t }, { r, t }, { r, b }, { l, b } };
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rr2.setRectRadii(rect, radii);
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REPORTER_ASSERT(reporter, rr2 == rr && rr2.getType() == rr.getType());
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}
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// Test out the basic API entry points
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static void test_round_rect_basic(skiatest::Reporter* reporter) {
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// Test out initialization methods
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SkPoint zeroPt = { 0, 0 };
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SkRRect empty;
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empty.setEmpty();
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REPORTER_ASSERT(reporter, SkRRect::kEmpty_Type == empty.type());
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REPORTER_ASSERT(reporter, empty.rect().isEmpty());
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for (int i = 0; i < 4; ++i) {
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REPORTER_ASSERT(reporter, zeroPt == empty.radii((SkRRect::Corner) i));
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}
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//----
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SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
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SkRRect rr1;
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rr1.setRect(rect);
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REPORTER_ASSERT(reporter, SkRRect::kRect_Type == rr1.type());
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REPORTER_ASSERT(reporter, rr1.rect() == rect);
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for (int i = 0; i < 4; ++i) {
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REPORTER_ASSERT(reporter, zeroPt == rr1.radii((SkRRect::Corner) i));
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}
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SkRRect rr1_2; // construct the same RR using the most general set function
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SkVector rr1_2_radii[4] = { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } };
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rr1_2.setRectRadii(rect, rr1_2_radii);
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REPORTER_ASSERT(reporter, rr1_2 == rr1 && rr1_2.getType() == rr1.getType());
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SkRRect rr1_3; // construct the same RR using the nine patch set function
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rr1_3.setNinePatch(rect, 0, 0, 0, 0);
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REPORTER_ASSERT(reporter, rr1_3 == rr1 && rr1_3.getType() == rr1.getType());
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//----
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SkPoint halfPoint = { SkScalarHalf(kWidth), SkScalarHalf(kHeight) };
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SkRRect rr2;
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rr2.setOval(rect);
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REPORTER_ASSERT(reporter, SkRRect::kOval_Type == rr2.type());
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REPORTER_ASSERT(reporter, rr2.rect() == rect);
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for (int i = 0; i < 4; ++i) {
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REPORTER_ASSERT(reporter,
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SkPointPriv::EqualsWithinTolerance(rr2.radii((SkRRect::Corner) i),
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halfPoint));
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}
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SkRRect rr2_2; // construct the same RR using the most general set function
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SkVector rr2_2_radii[4] = { { halfPoint.fX, halfPoint.fY }, { halfPoint.fX, halfPoint.fY },
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{ halfPoint.fX, halfPoint.fY }, { halfPoint.fX, halfPoint.fY } };
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rr2_2.setRectRadii(rect, rr2_2_radii);
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REPORTER_ASSERT(reporter, rr2_2 == rr2 && rr2_2.getType() == rr2.getType());
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SkRRect rr2_3; // construct the same RR using the nine patch set function
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rr2_3.setNinePatch(rect, halfPoint.fX, halfPoint.fY, halfPoint.fX, halfPoint.fY);
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REPORTER_ASSERT(reporter, rr2_3 == rr2 && rr2_3.getType() == rr2.getType());
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//----
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SkPoint p = { 5, 5 };
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SkRRect rr3;
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rr3.setRectXY(rect, p.fX, p.fY);
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REPORTER_ASSERT(reporter, SkRRect::kSimple_Type == rr3.type());
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REPORTER_ASSERT(reporter, rr3.rect() == rect);
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for (int i = 0; i < 4; ++i) {
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REPORTER_ASSERT(reporter, p == rr3.radii((SkRRect::Corner) i));
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}
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SkRRect rr3_2; // construct the same RR using the most general set function
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SkVector rr3_2_radii[4] = { { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 } };
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rr3_2.setRectRadii(rect, rr3_2_radii);
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REPORTER_ASSERT(reporter, rr3_2 == rr3 && rr3_2.getType() == rr3.getType());
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SkRRect rr3_3; // construct the same RR using the nine patch set function
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rr3_3.setNinePatch(rect, 5, 5, 5, 5);
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REPORTER_ASSERT(reporter, rr3_3 == rr3 && rr3_3.getType() == rr3.getType());
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//----
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test_9patch_rrect(reporter, rect, 10, 9, 8, 7, true);
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{
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// Test out the rrect from skia:3466
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SkRect rect2 = SkRect::MakeLTRB(0.358211994f, 0.755430222f, 0.872866154f, 0.806214333f);
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test_9patch_rrect(reporter,
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rect2,
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0.926942348f, 0.642850280f, 0.529063463f, 0.587844372f,
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false);
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}
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//----
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SkPoint radii2[4] = { { 0, 0 }, { 0, 0 }, { 50, 50 }, { 20, 50 } };
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SkRRect rr5;
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rr5.setRectRadii(rect, radii2);
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REPORTER_ASSERT(reporter, SkRRect::kComplex_Type == rr5.type());
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REPORTER_ASSERT(reporter, rr5.rect() == rect);
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for (int i = 0; i < 4; ++i) {
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REPORTER_ASSERT(reporter, radii2[i] == rr5.radii((SkRRect::Corner) i));
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}
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// Test out == & !=
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REPORTER_ASSERT(reporter, empty != rr3);
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REPORTER_ASSERT(reporter, rr3 != rr5);
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}
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// Test out the cases when the RR degenerates to a rect
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static void test_round_rect_rects(skiatest::Reporter* reporter) {
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SkRect r;
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//----
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SkRRect empty;
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empty.setEmpty();
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REPORTER_ASSERT(reporter, SkRRect::kEmpty_Type == empty.type());
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r = empty.rect();
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REPORTER_ASSERT(reporter, 0 == r.fLeft && 0 == r.fTop && 0 == r.fRight && 0 == r.fBottom);
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//----
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SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
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SkRRect rr1;
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rr1.setRectXY(rect, 0, 0);
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REPORTER_ASSERT(reporter, SkRRect::kRect_Type == rr1.type());
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r = rr1.rect();
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REPORTER_ASSERT(reporter, rect == r);
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//----
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SkPoint radii[4] = { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } };
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SkRRect rr2;
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rr2.setRectRadii(rect, radii);
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REPORTER_ASSERT(reporter, SkRRect::kRect_Type == rr2.type());
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r = rr2.rect();
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REPORTER_ASSERT(reporter, rect == r);
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//----
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SkPoint radii2[4] = { { 0, 0 }, { 20, 20 }, { 50, 50 }, { 20, 50 } };
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SkRRect rr3;
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rr3.setRectRadii(rect, radii2);
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REPORTER_ASSERT(reporter, SkRRect::kComplex_Type == rr3.type());
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}
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// Test out the cases when the RR degenerates to an oval
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static void test_round_rect_ovals(skiatest::Reporter* reporter) {
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//----
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SkRect oval;
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SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
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SkRRect rr1;
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rr1.setRectXY(rect, SkScalarHalf(kWidth), SkScalarHalf(kHeight));
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REPORTER_ASSERT(reporter, SkRRect::kOval_Type == rr1.type());
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oval = rr1.rect();
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REPORTER_ASSERT(reporter, oval == rect);
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}
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// Test out the non-degenerate RR cases
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static void test_round_rect_general(skiatest::Reporter* reporter) {
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//----
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SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
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SkRRect rr1;
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rr1.setRectXY(rect, 20, 20);
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REPORTER_ASSERT(reporter, SkRRect::kSimple_Type == rr1.type());
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//----
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SkPoint radii[4] = { { 0, 0 }, { 20, 20 }, { 50, 50 }, { 20, 50 } };
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SkRRect rr2;
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rr2.setRectRadii(rect, radii);
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REPORTER_ASSERT(reporter, SkRRect::kComplex_Type == rr2.type());
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}
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// Test out questionable-parameter handling
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static void test_round_rect_iffy_parameters(skiatest::Reporter* reporter) {
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// When the radii exceed the base rect they are proportionally scaled down
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// to fit
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SkRect rect = SkRect::MakeLTRB(0, 0, kWidth, kHeight);
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SkPoint radii[4] = { { 50, 100 }, { 100, 50 }, { 50, 100 }, { 100, 50 } };
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SkRRect rr1;
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rr1.setRectRadii(rect, radii);
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REPORTER_ASSERT(reporter, SkRRect::kComplex_Type == rr1.type());
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const SkPoint& p = rr1.radii(SkRRect::kUpperLeft_Corner);
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REPORTER_ASSERT(reporter, SkScalarNearlyEqual(p.fX, 33.33333f));
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REPORTER_ASSERT(reporter, SkScalarNearlyEqual(p.fY, 66.66666f));
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// Negative radii should be capped at zero
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SkRRect rr2;
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rr2.setRectXY(rect, -10, -20);
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REPORTER_ASSERT(reporter, SkRRect::kRect_Type == rr2.type());
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const SkPoint& p2 = rr2.radii(SkRRect::kUpperLeft_Corner);
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REPORTER_ASSERT(reporter, 0.0f == p2.fX);
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REPORTER_ASSERT(reporter, 0.0f == p2.fY);
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}
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// Move a small box from the start position by (stepX, stepY) 'numSteps' times
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// testing for containment in 'rr' at each step.
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static void test_direction(skiatest::Reporter* reporter, const SkRRect &rr,
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SkScalar initX, int stepX, SkScalar initY, int stepY,
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int numSteps, const bool* contains) {
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SkScalar x = initX, y = initY;
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for (int i = 0; i < numSteps; ++i) {
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SkRect test = SkRect::MakeXYWH(x, y,
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stepX ? SkIntToScalar(stepX) : SK_Scalar1,
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stepY ? SkIntToScalar(stepY) : SK_Scalar1);
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test.sort();
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REPORTER_ASSERT(reporter, contains[i] == rr.contains(test));
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x += stepX;
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y += stepY;
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}
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}
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// Exercise the RR's contains rect method
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static void test_round_rect_contains_rect(skiatest::Reporter* reporter) {
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static const int kNumRRects = 4;
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static const SkVector gRadii[kNumRRects][4] = {
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{ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } }, // rect
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{ { 20, 20 }, { 20, 20 }, { 20, 20 }, { 20, 20 } }, // circle
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{ { 10, 10 }, { 10, 10 }, { 10, 10 }, { 10, 10 } }, // simple
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{ { 0, 0 }, { 20, 20 }, { 10, 10 }, { 30, 30 } } // complex
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};
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SkRRect rrects[kNumRRects];
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for (int i = 0; i < kNumRRects; ++i) {
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rrects[i].setRectRadii(SkRect::MakeWH(40, 40), gRadii[i]);
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}
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// First test easy outs - boxes that are obviously out on
|
|
// each corner and edge
|
|
static const SkRect easyOuts[] = {
|
|
{ -5, -5, 5, 5 }, // NW
|
|
{ 15, -5, 20, 5 }, // N
|
|
{ 35, -5, 45, 5 }, // NE
|
|
{ 35, 15, 45, 20 }, // E
|
|
{ 35, 45, 35, 45 }, // SE
|
|
{ 15, 35, 20, 45 }, // S
|
|
{ -5, 35, 5, 45 }, // SW
|
|
{ -5, 15, 5, 20 } // W
|
|
};
|
|
|
|
for (int i = 0; i < kNumRRects; ++i) {
|
|
for (size_t j = 0; j < SK_ARRAY_COUNT(easyOuts); ++j) {
|
|
REPORTER_ASSERT(reporter, !rrects[i].contains(easyOuts[j]));
|
|
}
|
|
}
|
|
|
|
// Now test non-trivial containment. For each compass
|
|
// point walk a 1x1 rect in from the edge of the bounding
|
|
// rect
|
|
static const int kNumSteps = 15;
|
|
bool answers[kNumRRects][8][kNumSteps] = {
|
|
// all the test rects are inside the degenerate rrect
|
|
{
|
|
// rect
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
},
|
|
// for the circle we expect 6 blocks to be out on the
|
|
// corners (then the rest in) and only the first block
|
|
// out on the vertical and horizontal axes (then
|
|
// the rest in)
|
|
{
|
|
// circle
|
|
{ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
},
|
|
// for the simple round rect we expect 3 out on
|
|
// the corners (then the rest in) and no blocks out
|
|
// on the vertical and horizontal axes
|
|
{
|
|
// simple RR
|
|
{ 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
},
|
|
// for the complex case the answer is different for each direction
|
|
{
|
|
// complex RR
|
|
// all in for NW (rect) corner (same as rect case)
|
|
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
// only first block out for N (same as circle case)
|
|
{ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
// first 6 blocks out for NE (same as circle case)
|
|
{ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
// only first block out for E (same as circle case)
|
|
{ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
// first 3 blocks out for SE (same as simple case)
|
|
{ 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
// first two blocks out for S
|
|
{ 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
// first 9 blocks out for SW
|
|
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1 },
|
|
// first two blocks out for W (same as S)
|
|
{ 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
|
|
}
|
|
};
|
|
|
|
for (int i = 0; i < kNumRRects; ++i) {
|
|
test_direction(reporter, rrects[i], 0, 1, 0, 1, kNumSteps, answers[i][0]); // NW
|
|
test_direction(reporter, rrects[i], 19.5f, 0, 0, 1, kNumSteps, answers[i][1]); // N
|
|
test_direction(reporter, rrects[i], 40, -1, 0, 1, kNumSteps, answers[i][2]); // NE
|
|
test_direction(reporter, rrects[i], 40, -1, 19.5f, 0, kNumSteps, answers[i][3]); // E
|
|
test_direction(reporter, rrects[i], 40, -1, 40, -1, kNumSteps, answers[i][4]); // SE
|
|
test_direction(reporter, rrects[i], 19.5f, 0, 40, -1, kNumSteps, answers[i][5]); // S
|
|
test_direction(reporter, rrects[i], 0, 1, 40, -1, kNumSteps, answers[i][6]); // SW
|
|
test_direction(reporter, rrects[i], 0, 1, 19.5f, 0, kNumSteps, answers[i][7]); // W
|
|
}
|
|
}
|
|
|
|
// Called for a matrix that should cause SkRRect::transform to fail.
|
|
static void assert_transform_failure(skiatest::Reporter* reporter, const SkRRect& orig,
|
|
const SkMatrix& matrix) {
|
|
// The test depends on the fact that the original is not empty.
|
|
SkASSERT(!orig.isEmpty());
|
|
SkRRect dst;
|
|
dst.setEmpty();
|
|
|
|
const SkRRect copyOfDst = dst;
|
|
const SkRRect copyOfOrig = orig;
|
|
bool success = orig.transform(matrix, &dst);
|
|
// This transform should fail.
|
|
REPORTER_ASSERT(reporter, !success);
|
|
// Since the transform failed, dst should be unchanged.
|
|
REPORTER_ASSERT(reporter, copyOfDst == dst);
|
|
// original should not be modified.
|
|
REPORTER_ASSERT(reporter, copyOfOrig == orig);
|
|
REPORTER_ASSERT(reporter, orig != dst);
|
|
}
|
|
|
|
#define GET_RADII \
|
|
const SkVector& origUL = orig.radii(SkRRect::kUpperLeft_Corner); \
|
|
const SkVector& origUR = orig.radii(SkRRect::kUpperRight_Corner); \
|
|
const SkVector& origLR = orig.radii(SkRRect::kLowerRight_Corner); \
|
|
const SkVector& origLL = orig.radii(SkRRect::kLowerLeft_Corner); \
|
|
const SkVector& dstUL = dst.radii(SkRRect::kUpperLeft_Corner); \
|
|
const SkVector& dstUR = dst.radii(SkRRect::kUpperRight_Corner); \
|
|
const SkVector& dstLR = dst.radii(SkRRect::kLowerRight_Corner); \
|
|
const SkVector& dstLL = dst.radii(SkRRect::kLowerLeft_Corner)
|
|
|
|
// Called to test various transforms on a single SkRRect.
|
|
static void test_transform_helper(skiatest::Reporter* reporter, const SkRRect& orig) {
|
|
SkRRect dst;
|
|
dst.setEmpty();
|
|
|
|
// The identity matrix will duplicate the rrect.
|
|
bool success = orig.transform(SkMatrix::I(), &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
REPORTER_ASSERT(reporter, orig == dst);
|
|
|
|
// Skew and Perspective make transform fail.
|
|
SkMatrix matrix;
|
|
matrix.reset();
|
|
matrix.setSkewX(SkIntToScalar(2));
|
|
assert_transform_failure(reporter, orig, matrix);
|
|
|
|
matrix.reset();
|
|
matrix.setSkewY(SkIntToScalar(3));
|
|
assert_transform_failure(reporter, orig, matrix);
|
|
|
|
matrix.reset();
|
|
matrix.setPerspX(4);
|
|
assert_transform_failure(reporter, orig, matrix);
|
|
|
|
matrix.reset();
|
|
matrix.setPerspY(5);
|
|
assert_transform_failure(reporter, orig, matrix);
|
|
|
|
// Rotation fails.
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(37));
|
|
assert_transform_failure(reporter, orig, matrix);
|
|
|
|
// Translate will keep the rect moved, but otherwise the same.
|
|
matrix.reset();
|
|
SkScalar translateX = SkIntToScalar(32);
|
|
SkScalar translateY = SkIntToScalar(15);
|
|
matrix.setTranslateX(translateX);
|
|
matrix.setTranslateY(translateY);
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
for (int i = 0; i < 4; ++i) {
|
|
REPORTER_ASSERT(reporter,
|
|
orig.radii((SkRRect::Corner) i) == dst.radii((SkRRect::Corner) i));
|
|
}
|
|
REPORTER_ASSERT(reporter, orig.rect().width() == dst.rect().width());
|
|
REPORTER_ASSERT(reporter, orig.rect().height() == dst.rect().height());
|
|
REPORTER_ASSERT(reporter, dst.rect().left() == orig.rect().left() + translateX);
|
|
REPORTER_ASSERT(reporter, dst.rect().top() == orig.rect().top() + translateY);
|
|
|
|
// Keeping the translation, but adding skew will make transform fail.
|
|
matrix.setSkewY(SkIntToScalar(7));
|
|
assert_transform_failure(reporter, orig, matrix);
|
|
|
|
// Scaling in -x will flip the round rect horizontally.
|
|
matrix.reset();
|
|
matrix.setScaleX(SkIntToScalar(-1));
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
{
|
|
GET_RADII;
|
|
// Radii have swapped in x.
|
|
REPORTER_ASSERT(reporter, origUL == dstUR);
|
|
REPORTER_ASSERT(reporter, origUR == dstUL);
|
|
REPORTER_ASSERT(reporter, origLR == dstLL);
|
|
REPORTER_ASSERT(reporter, origLL == dstLR);
|
|
}
|
|
// Width and height remain the same.
|
|
REPORTER_ASSERT(reporter, orig.rect().width() == dst.rect().width());
|
|
REPORTER_ASSERT(reporter, orig.rect().height() == dst.rect().height());
|
|
// Right and left have swapped (sort of)
|
|
REPORTER_ASSERT(reporter, orig.rect().right() == -dst.rect().left());
|
|
// Top has stayed the same.
|
|
REPORTER_ASSERT(reporter, orig.rect().top() == dst.rect().top());
|
|
|
|
// Keeping the scale, but adding a persp will make transform fail.
|
|
matrix.setPerspX(7);
|
|
assert_transform_failure(reporter, orig, matrix);
|
|
|
|
// Scaling in -y will flip the round rect vertically.
|
|
matrix.reset();
|
|
matrix.setScaleY(SkIntToScalar(-1));
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
{
|
|
GET_RADII;
|
|
// Radii have swapped in y.
|
|
REPORTER_ASSERT(reporter, origUL == dstLL);
|
|
REPORTER_ASSERT(reporter, origUR == dstLR);
|
|
REPORTER_ASSERT(reporter, origLR == dstUR);
|
|
REPORTER_ASSERT(reporter, origLL == dstUL);
|
|
}
|
|
// Width and height remain the same.
|
|
REPORTER_ASSERT(reporter, orig.rect().width() == dst.rect().width());
|
|
REPORTER_ASSERT(reporter, orig.rect().height() == dst.rect().height());
|
|
// Top and bottom have swapped (sort of)
|
|
REPORTER_ASSERT(reporter, orig.rect().top() == -dst.rect().bottom());
|
|
// Left has stayed the same.
|
|
REPORTER_ASSERT(reporter, orig.rect().left() == dst.rect().left());
|
|
|
|
// Scaling in -x and -y will swap in both directions.
|
|
matrix.reset();
|
|
matrix.setScaleY(SkIntToScalar(-1));
|
|
matrix.setScaleX(SkIntToScalar(-1));
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
{
|
|
GET_RADII;
|
|
REPORTER_ASSERT(reporter, origUL == dstLR);
|
|
REPORTER_ASSERT(reporter, origUR == dstLL);
|
|
REPORTER_ASSERT(reporter, origLR == dstUL);
|
|
REPORTER_ASSERT(reporter, origLL == dstUR);
|
|
}
|
|
// Width and height remain the same.
|
|
REPORTER_ASSERT(reporter, orig.rect().width() == dst.rect().width());
|
|
REPORTER_ASSERT(reporter, orig.rect().height() == dst.rect().height());
|
|
REPORTER_ASSERT(reporter, orig.rect().top() == -dst.rect().bottom());
|
|
REPORTER_ASSERT(reporter, orig.rect().right() == -dst.rect().left());
|
|
|
|
// Scale in both directions.
|
|
SkScalar xScale = SkIntToScalar(3);
|
|
SkScalar yScale = 3.2f;
|
|
matrix.reset();
|
|
matrix.setScaleX(xScale);
|
|
matrix.setScaleY(yScale);
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
// Radii are scaled.
|
|
for (int i = 0; i < 4; ++i) {
|
|
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst.radii((SkRRect::Corner) i).fX,
|
|
orig.radii((SkRRect::Corner) i).fX * xScale));
|
|
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst.radii((SkRRect::Corner) i).fY,
|
|
orig.radii((SkRRect::Corner) i).fY * yScale));
|
|
}
|
|
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst.rect().width(),
|
|
orig.rect().width() * xScale));
|
|
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst.rect().height(),
|
|
orig.rect().height() * yScale));
|
|
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst.rect().left(),
|
|
orig.rect().left() * xScale));
|
|
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(dst.rect().top(),
|
|
orig.rect().top() * yScale));
|
|
|
|
|
|
// a-----b d-----a
|
|
// | | -> | |
|
|
// | | Rotate 90 | |
|
|
// d-----c c-----b
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(90));
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
{
|
|
GET_RADII;
|
|
// Radii have cycled clockwise and swapped their x and y axis.
|
|
REPORTER_ASSERT(reporter, dstUL.x() == origLL.y());
|
|
REPORTER_ASSERT(reporter, dstUL.y() == origLL.x());
|
|
REPORTER_ASSERT(reporter, dstUR.x() == origUL.y());
|
|
REPORTER_ASSERT(reporter, dstUR.y() == origUL.x());
|
|
REPORTER_ASSERT(reporter, dstLR.x() == origUR.y());
|
|
REPORTER_ASSERT(reporter, dstLR.y() == origUR.x());
|
|
REPORTER_ASSERT(reporter, dstLL.x() == origLR.y());
|
|
REPORTER_ASSERT(reporter, dstLL.y() == origLR.x());
|
|
}
|
|
// Width and height would get swapped.
|
|
REPORTER_ASSERT(reporter, orig.rect().width() == dst.rect().height());
|
|
REPORTER_ASSERT(reporter, orig.rect().height() == dst.rect().width());
|
|
|
|
// a-----b b-----a c-----b
|
|
// | | -> | | -> | |
|
|
// | | Flip X | | Rotate 90 | |
|
|
// d-----c c-----d d-----a
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(90));
|
|
matrix.postScale(SkIntToScalar(-1), SkIntToScalar(1));
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
{
|
|
GET_RADII;
|
|
REPORTER_ASSERT(reporter, dstUL.x() == origLR.y());
|
|
REPORTER_ASSERT(reporter, dstUL.y() == origLR.x());
|
|
REPORTER_ASSERT(reporter, dstUR.x() == origUR.y());
|
|
REPORTER_ASSERT(reporter, dstUR.y() == origUR.x());
|
|
REPORTER_ASSERT(reporter, dstLR.x() == origUL.y());
|
|
REPORTER_ASSERT(reporter, dstLR.y() == origUL.x());
|
|
REPORTER_ASSERT(reporter, dstLL.x() == origLL.y());
|
|
REPORTER_ASSERT(reporter, dstLL.y() == origLL.x());
|
|
}
|
|
// Width and height would get swapped.
|
|
REPORTER_ASSERT(reporter, orig.rect().width() == dst.rect().height());
|
|
REPORTER_ASSERT(reporter, orig.rect().height() == dst.rect().width());
|
|
|
|
// a-----b d-----a c-----b
|
|
// | | -> | | -> | |
|
|
// | | Rotate 90 | | Flip Y | |
|
|
// d-----c c-----b d-----a
|
|
//
|
|
// This is the same as Flip X and Rotate 90.
|
|
matrix.reset();
|
|
matrix.setScale(SkIntToScalar(1), SkIntToScalar(-1));
|
|
matrix.postRotate(SkIntToScalar(90));
|
|
SkRRect dst2;
|
|
dst2.setEmpty();
|
|
success = orig.transform(matrix, &dst2);
|
|
REPORTER_ASSERT(reporter, success);
|
|
REPORTER_ASSERT(reporter, dst == dst2);
|
|
|
|
// a-----b b-----c c-----b
|
|
// | | -> | | -> | |
|
|
// | | Rotate 270 | | Flip X | |
|
|
// d-----c a-----d d-----a
|
|
matrix.reset();
|
|
matrix.setScale(SkIntToScalar(-1), SkIntToScalar(1));
|
|
matrix.postRotate(SkIntToScalar(270));
|
|
dst2.setEmpty();
|
|
success = orig.transform(matrix, &dst2);
|
|
REPORTER_ASSERT(reporter, success);
|
|
REPORTER_ASSERT(reporter, dst == dst2);
|
|
|
|
// a-----b d-----c c-----b
|
|
// | | -> | | -> | |
|
|
// | | Flip Y | | Rotate 270 | |
|
|
// d-----c a-----b d-----a
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(270));
|
|
matrix.postScale(SkIntToScalar(1), SkIntToScalar(-1));
|
|
dst2.setEmpty();
|
|
success = orig.transform(matrix, &dst2);
|
|
REPORTER_ASSERT(reporter, success);
|
|
REPORTER_ASSERT(reporter, dst == dst2);
|
|
|
|
// a-----b d-----a a-----d
|
|
// | | -> | | -> | |
|
|
// | | Rotate 90 | | Flip X | |
|
|
// d-----c c-----b b-----c
|
|
matrix.reset();
|
|
matrix.setScale(SkIntToScalar(-1), SkIntToScalar(1));
|
|
matrix.postRotate(SkIntToScalar(90));
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
{
|
|
GET_RADII;
|
|
REPORTER_ASSERT(reporter, dstUL.x() == origUL.y());
|
|
REPORTER_ASSERT(reporter, dstUL.y() == origUL.x());
|
|
REPORTER_ASSERT(reporter, dstUR.x() == origLL.y());
|
|
REPORTER_ASSERT(reporter, dstUR.y() == origLL.x());
|
|
REPORTER_ASSERT(reporter, dstLR.x() == origLR.y());
|
|
REPORTER_ASSERT(reporter, dstLR.y() == origLR.x());
|
|
REPORTER_ASSERT(reporter, dstLL.x() == origUR.y());
|
|
REPORTER_ASSERT(reporter, dstLL.y() == origUR.x());
|
|
}
|
|
// Width and height would get swapped.
|
|
REPORTER_ASSERT(reporter, orig.rect().width() == dst.rect().height());
|
|
REPORTER_ASSERT(reporter, orig.rect().height() == dst.rect().width());
|
|
|
|
// a-----b d-----c a-----d
|
|
// | | -> | | -> | |
|
|
// | | Flip Y | | Rotate 90 | |
|
|
// d-----c a-----b b-----c
|
|
// This is the same as rotate 90 and flip x.
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(90));
|
|
matrix.postScale(SkIntToScalar(1), SkIntToScalar(-1));
|
|
dst2.setEmpty();
|
|
success = orig.transform(matrix, &dst2);
|
|
REPORTER_ASSERT(reporter, success);
|
|
REPORTER_ASSERT(reporter, dst == dst2);
|
|
|
|
// a-----b b-----a a-----d
|
|
// | | -> | | -> | |
|
|
// | | Flip X | | Rotate 270 | |
|
|
// d-----c c-----d b-----c
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(270));
|
|
matrix.postScale(SkIntToScalar(-1), SkIntToScalar(1));
|
|
dst2.setEmpty();
|
|
success = orig.transform(matrix, &dst2);
|
|
REPORTER_ASSERT(reporter, success);
|
|
REPORTER_ASSERT(reporter, dst == dst2);
|
|
|
|
// a-----b b-----c a-----d
|
|
// | | -> | | -> | |
|
|
// | | Rotate 270 | | Flip Y | |
|
|
// d-----c a-----d b-----c
|
|
matrix.reset();
|
|
matrix.setScale(SkIntToScalar(1), SkIntToScalar(-1));
|
|
matrix.postRotate(SkIntToScalar(270));
|
|
dst2.setEmpty();
|
|
success = orig.transform(matrix, &dst2);
|
|
REPORTER_ASSERT(reporter, success);
|
|
REPORTER_ASSERT(reporter, dst == dst2);
|
|
|
|
|
|
// a-----b b-----a c-----d b-----c
|
|
// | | -> | | -> | | -> | |
|
|
// | | Flip X | | Flip Y | | Rotate 90 | |
|
|
// d-----c c-----d b-----a a-----d
|
|
//
|
|
// This is the same as rotation by 270.
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(90));
|
|
matrix.postScale(SkIntToScalar(-1), SkIntToScalar(-1));
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
{
|
|
GET_RADII;
|
|
// Radii have cycled clockwise and swapped their x and y axis.
|
|
REPORTER_ASSERT(reporter, dstUL.x() == origUR.y());
|
|
REPORTER_ASSERT(reporter, dstUL.y() == origUR.x());
|
|
REPORTER_ASSERT(reporter, dstUR.x() == origLR.y());
|
|
REPORTER_ASSERT(reporter, dstUR.y() == origLR.x());
|
|
REPORTER_ASSERT(reporter, dstLR.x() == origLL.y());
|
|
REPORTER_ASSERT(reporter, dstLR.y() == origLL.x());
|
|
REPORTER_ASSERT(reporter, dstLL.x() == origUL.y());
|
|
REPORTER_ASSERT(reporter, dstLL.y() == origUL.x());
|
|
}
|
|
// Width and height would get swapped.
|
|
REPORTER_ASSERT(reporter, orig.rect().width() == dst.rect().height());
|
|
REPORTER_ASSERT(reporter, orig.rect().height() == dst.rect().width());
|
|
|
|
// a-----b b-----c
|
|
// | | -> | |
|
|
// | | Rotate 270 | |
|
|
// d-----c a-----d
|
|
//
|
|
dst2.setEmpty();
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(270));
|
|
success = orig.transform(matrix, &dst2);
|
|
REPORTER_ASSERT(reporter, success);
|
|
REPORTER_ASSERT(reporter, dst == dst2);
|
|
|
|
// a-----b b-----a c-----d d-----a
|
|
// | | -> | | -> | | -> | |
|
|
// | | Flip X | | Flip Y | | Rotate 270 | |
|
|
// d-----c c-----d b-----a c-----b
|
|
//
|
|
// This is the same as rotation by 90 degrees.
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(270));
|
|
matrix.postScale(SkIntToScalar(-1), SkIntToScalar(-1));
|
|
dst.setEmpty();
|
|
success = orig.transform(matrix, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
|
|
matrix.reset();
|
|
matrix.setRotate(SkIntToScalar(90));
|
|
dst2.setEmpty();
|
|
success = orig.transform(matrix, &dst2);
|
|
REPORTER_ASSERT(reporter, dst == dst2);
|
|
|
|
}
|
|
|
|
static void test_round_rect_transform(skiatest::Reporter* reporter) {
|
|
SkRRect rrect;
|
|
{
|
|
SkRect r = { 0, 0, kWidth, kHeight };
|
|
rrect.setRectXY(r, SkIntToScalar(4), SkIntToScalar(7));
|
|
test_transform_helper(reporter, rrect);
|
|
}
|
|
{
|
|
SkRect r = { SkIntToScalar(5), SkIntToScalar(15),
|
|
SkIntToScalar(27), SkIntToScalar(34) };
|
|
SkVector radii[4] = { { 0, SkIntToScalar(1) },
|
|
{ SkIntToScalar(2), SkIntToScalar(3) },
|
|
{ SkIntToScalar(4), SkIntToScalar(5) },
|
|
{ SkIntToScalar(6), SkIntToScalar(7) } };
|
|
rrect.setRectRadii(r, radii);
|
|
test_transform_helper(reporter, rrect);
|
|
}
|
|
}
|
|
|
|
// Test out the case where an oval already off in space is translated/scaled
|
|
// further off into space - yielding numerical issues when the rect & radii
|
|
// are transformed separatly
|
|
// BUG=skia:2696
|
|
static void test_issue_2696(skiatest::Reporter* reporter) {
|
|
SkRRect rrect;
|
|
SkRect r = { 28443.8594f, 53.1428604f, 28446.7148f, 56.0000038f };
|
|
rrect.setOval(r);
|
|
|
|
SkMatrix xform;
|
|
xform.setAll(2.44f, 0.0f, 485411.7f,
|
|
0.0f, 2.44f, -438.7f,
|
|
0.0f, 0.0f, 1.0f);
|
|
SkRRect dst;
|
|
|
|
bool success = rrect.transform(xform, &dst);
|
|
REPORTER_ASSERT(reporter, success);
|
|
|
|
SkScalar halfWidth = SkScalarHalf(dst.width());
|
|
SkScalar halfHeight = SkScalarHalf(dst.height());
|
|
|
|
for (int i = 0; i < 4; ++i) {
|
|
REPORTER_ASSERT(reporter,
|
|
SkScalarNearlyEqual(dst.radii((SkRRect::Corner)i).fX, halfWidth));
|
|
REPORTER_ASSERT(reporter,
|
|
SkScalarNearlyEqual(dst.radii((SkRRect::Corner)i).fY, halfHeight));
|
|
}
|
|
}
|
|
|
|
void test_read_rrect(skiatest::Reporter* reporter, const SkRRect& rrect, bool shouldEqualSrc) {
|
|
// It would be cleaner to call rrect.writeToMemory into a buffer. However, writeToMemory asserts
|
|
// that the rrect is valid and our caller may have fiddled with the internals of rrect to make
|
|
// it invalid.
|
|
const void* buffer = reinterpret_cast<const void*>(&rrect);
|
|
SkRRect deserialized;
|
|
size_t size = deserialized.readFromMemory(buffer, sizeof(SkRRect));
|
|
REPORTER_ASSERT(reporter, size == SkRRect::kSizeInMemory);
|
|
REPORTER_ASSERT(reporter, deserialized.isValid());
|
|
if (shouldEqualSrc) {
|
|
REPORTER_ASSERT(reporter, rrect == deserialized);
|
|
}
|
|
}
|
|
|
|
static void test_read(skiatest::Reporter* reporter) {
|
|
static const SkRect kRect = {10.f, 10.f, 20.f, 20.f};
|
|
static const SkRect kNaNRect = {10.f, 10.f, 20.f, SK_ScalarNaN};
|
|
static const SkRect kInfRect = {10.f, 10.f, SK_ScalarInfinity, 20.f};
|
|
SkRRect rrect;
|
|
|
|
test_read_rrect(reporter, SkRRect::MakeEmpty(), true);
|
|
test_read_rrect(reporter, SkRRect::MakeRect(kRect), true);
|
|
// These get coerced to empty.
|
|
test_read_rrect(reporter, SkRRect::MakeRect(kInfRect), true);
|
|
test_read_rrect(reporter, SkRRect::MakeRect(kNaNRect), true);
|
|
|
|
rrect.setRect(kRect);
|
|
SkRect* innerRect = reinterpret_cast<SkRect*>(&rrect);
|
|
SkASSERT(*innerRect == kRect);
|
|
*innerRect = kInfRect;
|
|
test_read_rrect(reporter, rrect, false);
|
|
*innerRect = kNaNRect;
|
|
test_read_rrect(reporter, rrect, false);
|
|
|
|
test_read_rrect(reporter, SkRRect::MakeOval(kRect), true);
|
|
test_read_rrect(reporter, SkRRect::MakeOval(kInfRect), true);
|
|
test_read_rrect(reporter, SkRRect::MakeOval(kNaNRect), true);
|
|
rrect.setOval(kRect);
|
|
*innerRect = kInfRect;
|
|
test_read_rrect(reporter, rrect, false);
|
|
*innerRect = kNaNRect;
|
|
test_read_rrect(reporter, rrect, false);
|
|
|
|
test_read_rrect(reporter, SkRRect::MakeRectXY(kRect, 5.f, 5.f), true);
|
|
// rrect should scale down the radii to make this legal
|
|
test_read_rrect(reporter, SkRRect::MakeRectXY(kRect, 5.f, 400.f), true);
|
|
|
|
static const SkVector kRadii[4] = {{0.5f, 1.f}, {1.5f, 2.f}, {2.5f, 3.f}, {3.5f, 4.f}};
|
|
rrect.setRectRadii(kRect, kRadii);
|
|
test_read_rrect(reporter, rrect, true);
|
|
SkScalar* innerRadius = reinterpret_cast<SkScalar*>(&rrect) + 6;
|
|
SkASSERT(*innerRadius == 1.5f);
|
|
*innerRadius = 400.f;
|
|
test_read_rrect(reporter, rrect, false);
|
|
*innerRadius = SK_ScalarInfinity;
|
|
test_read_rrect(reporter, rrect, false);
|
|
*innerRadius = SK_ScalarNaN;
|
|
test_read_rrect(reporter, rrect, false);
|
|
*innerRadius = -10.f;
|
|
test_read_rrect(reporter, rrect, false);
|
|
}
|
|
|
|
static void test_inner_bounds(skiatest::Reporter* reporter) {
|
|
// Because InnerBounds() insets the computed bounds slightly to correct for numerical inaccuracy
|
|
// when finding the maximum inscribed point on a curve, we use a larger epsilon for comparing
|
|
// expected areas.
|
|
static constexpr SkScalar kEpsilon = 0.005f;
|
|
|
|
// Test that an empty rrect reports empty inner bounds
|
|
REPORTER_ASSERT(reporter, SkRRectPriv::InnerBounds(SkRRect::MakeEmpty()).isEmpty());
|
|
// Test that a rect rrect reports itself as the inner bounds
|
|
SkRect r = SkRect::MakeLTRB(0, 1, 2, 3);
|
|
REPORTER_ASSERT(reporter, SkRRectPriv::InnerBounds(SkRRect::MakeRect(r)) == r);
|
|
// Test that a circle rrect has an inner bounds area equal to 2*radius^2
|
|
float radius = 5.f;
|
|
SkRect inner = SkRRectPriv::InnerBounds(SkRRect::MakeOval(SkRect::MakeWH(2.f * radius,
|
|
2.f * radius)));
|
|
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(inner.width() * inner.height(),
|
|
2.f * radius * radius, kEpsilon));
|
|
|
|
float width = 20.f;
|
|
float height = 25.f;
|
|
r = SkRect::MakeWH(width, height);
|
|
// Test that a rrect with circular corners has an area equal to:
|
|
float expectedArea =
|
|
(2.f * radius * radius) + // area in the 4 circular corners
|
|
(width-2.f*radius) * (height-2.f*radius) + // inner area excluding corners and edges
|
|
SK_ScalarSqrt2 * radius * (width-2.f*radius) + // two horiz. rects between corners
|
|
SK_ScalarSqrt2 * radius * (height-2.f*radius); // two vert. rects between corners
|
|
|
|
inner = SkRRectPriv::InnerBounds(SkRRect::MakeRectXY(r, radius, radius));
|
|
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(inner.width() * inner.height(),
|
|
expectedArea, kEpsilon));
|
|
|
|
// Test that a rrect with a small y radius but large x radius selects the horizontal interior
|
|
SkRRect rr = SkRRect::MakeRectXY(r, 2.f * radius, 0.1f * radius);
|
|
REPORTER_ASSERT(reporter, SkRRectPriv::InnerBounds(rr) ==
|
|
SkRect::MakeLTRB(0.f, 0.1f * radius, width, height - 0.1f * radius));
|
|
// And vice versa with large y and small x radii
|
|
rr = SkRRect::MakeRectXY(r, 0.1f * radius, 2.f * radius);
|
|
REPORTER_ASSERT(reporter, SkRRectPriv::InnerBounds(rr) ==
|
|
SkRect::MakeLTRB(0.1f * radius, 0.f, width - 0.1f * radius, height));
|
|
|
|
// Test a variety of complex round rects produce a non-empty rect that is at least contained,
|
|
// and larger than the inner area avoiding all corners.
|
|
SkRandom rng;
|
|
for (int i = 0; i < 1000; ++i) {
|
|
float maxRadiusX = rng.nextRangeF(0.f, 40.f);
|
|
float maxRadiusY = rng.nextRangeF(0.f, 40.f);
|
|
|
|
float innerWidth = rng.nextRangeF(0.f, 40.f);
|
|
float innerHeight = rng.nextRangeF(0.f, 40.f);
|
|
|
|
SkVector radii[4] = {{rng.nextRangeF(0.f, maxRadiusX), rng.nextRangeF(0.f, maxRadiusY)},
|
|
{rng.nextRangeF(0.f, maxRadiusX), rng.nextRangeF(0.f, maxRadiusY)},
|
|
{rng.nextRangeF(0.f, maxRadiusX), rng.nextRangeF(0.f, maxRadiusY)},
|
|
{rng.nextRangeF(0.f, maxRadiusX), rng.nextRangeF(0.f, maxRadiusY)}};
|
|
|
|
float maxLeft = std::max(radii[0].fX, radii[3].fX);
|
|
float maxTop = std::max(radii[0].fY, radii[1].fY);
|
|
float maxRight = std::max(radii[1].fX, radii[2].fX);
|
|
float maxBottom = std::max(radii[2].fY, radii[3].fY);
|
|
|
|
SkRect outer = SkRect::MakeWH(maxLeft + maxRight + innerWidth,
|
|
maxTop + maxBottom + innerHeight);
|
|
rr.setRectRadii(outer, radii);
|
|
|
|
SkRect maxInner = SkRRectPriv::InnerBounds(rr);
|
|
// Test upper limit on the size of 'maxInner'
|
|
REPORTER_ASSERT(reporter, outer.contains(maxInner));
|
|
REPORTER_ASSERT(reporter, rr.contains(maxInner));
|
|
|
|
// Test lower limit on the size of 'maxInner'
|
|
SkRect inner = SkRect::MakeXYWH(maxLeft, maxTop, innerWidth, innerHeight);
|
|
inner.inset(kEpsilon, kEpsilon);
|
|
|
|
if (inner.isSorted()) {
|
|
REPORTER_ASSERT(reporter, maxInner.contains(inner));
|
|
} else {
|
|
// Flipped from the inset, just test two points of inner
|
|
float midX = maxLeft + 0.5f * innerWidth;
|
|
float midY = maxTop + 0.5f * innerHeight;
|
|
REPORTER_ASSERT(reporter, maxInner.contains(midX, maxTop));
|
|
REPORTER_ASSERT(reporter, maxInner.contains(midX, maxTop + innerHeight));
|
|
REPORTER_ASSERT(reporter, maxInner.contains(maxLeft, midY));
|
|
REPORTER_ASSERT(reporter, maxInner.contains(maxLeft + innerWidth, midY));
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
// Helper to test expected intersection, relying on the fact that all round rect intersections
|
|
// will have their bounds equal to the intersection of the bounds of the input round rects, and
|
|
// their corner radii will be a one of A's, B's, or rectangular.
|
|
enum CornerChoice : uint8_t {
|
|
kA, kB, kRect
|
|
};
|
|
|
|
static void verify_success(skiatest::Reporter* reporter, const SkRRect& a, const SkRRect& b,
|
|
CornerChoice tl, CornerChoice tr, CornerChoice br, CornerChoice bl) {
|
|
static const SkRRect kRect = SkRRect::MakeEmpty(); // has (0,0) for all corners
|
|
|
|
// Compute expected round rect intersection given bounds of A and B, and the specified
|
|
// corner choices for the 4 corners.
|
|
SkRect expectedBounds;
|
|
SkAssertResult(expectedBounds.intersect(a.rect(), b.rect()));
|
|
|
|
SkVector radii[4] = {
|
|
(tl == kA ? a : (tl == kB ? b : kRect)).radii(SkRRect::kUpperLeft_Corner),
|
|
(tr == kA ? a : (tr == kB ? b : kRect)).radii(SkRRect::kUpperRight_Corner),
|
|
(br == kA ? a : (br == kB ? b : kRect)).radii(SkRRect::kLowerRight_Corner),
|
|
(bl == kA ? a : (bl == kB ? b : kRect)).radii(SkRRect::kLowerLeft_Corner)
|
|
};
|
|
SkRRect expected;
|
|
expected.setRectRadii(expectedBounds, radii);
|
|
|
|
SkRRect actual = SkRRectPriv::ConservativeIntersect(a, b);
|
|
// Intersections are commutative so ba and ab should be the same
|
|
REPORTER_ASSERT(reporter, actual == SkRRectPriv::ConservativeIntersect(b, a));
|
|
|
|
// Intersection of the result with either A or B should remain the intersection
|
|
REPORTER_ASSERT(reporter, actual == SkRRectPriv::ConservativeIntersect(actual, a));
|
|
REPORTER_ASSERT(reporter, actual == SkRRectPriv::ConservativeIntersect(actual, b));
|
|
|
|
// Bounds of intersection round rect should equal intersection of bounds of a and b
|
|
REPORTER_ASSERT(reporter, actual.rect() == expectedBounds);
|
|
|
|
// Use PathOps to confirm that the explicit round rect is correct.
|
|
SkPath aPath, bPath, expectedPath;
|
|
aPath.addRRect(a);
|
|
bPath.addRRect(b);
|
|
SkAssertResult(Op(aPath, bPath, kIntersect_SkPathOp, &expectedPath));
|
|
|
|
// The isRRect() heuristics in SkPath are based on having called addRRect(), so a path from
|
|
// path ops that is a rounded rectangle will return false. However, if test XOR expected is
|
|
// empty, then we know that the shapes were the same.
|
|
SkPath testPath;
|
|
testPath.addRRect(actual);
|
|
|
|
SkPath empty;
|
|
SkAssertResult(Op(testPath, expectedPath, kXOR_SkPathOp, &empty));
|
|
REPORTER_ASSERT(reporter, empty.isEmpty());
|
|
}
|
|
|
|
static void verify_failure(skiatest::Reporter* reporter, const SkRRect& a, const SkRRect& b) {
|
|
SkRRect intersection = SkRRectPriv::ConservativeIntersect(a, b);
|
|
// Expected the intersection to fail (no intersection or complex intersection is not
|
|
// disambiguated).
|
|
REPORTER_ASSERT(reporter, intersection.isEmpty());
|
|
REPORTER_ASSERT(reporter, SkRRectPriv::ConservativeIntersect(b, a).isEmpty());
|
|
}
|
|
} // namespace
|
|
|
|
static void test_conservative_intersection(skiatest::Reporter* reporter) {
|
|
// Helper to inline making an inset round rect
|
|
auto make_inset = [](const SkRRect& r, float dx, float dy) {
|
|
SkRRect i = r;
|
|
i.inset(dx, dy);
|
|
return i;
|
|
};
|
|
|
|
// A is a wide, short round rect
|
|
SkRRect a = SkRRect::MakeRectXY({0.f, 4.f, 16.f, 12.f}, 2.f, 2.f);
|
|
// B is a narrow, tall round rect
|
|
SkRRect b = SkRRect::MakeRectXY({4.f, 0.f, 12.f, 16.f}, 3.f, 3.f);
|
|
// NOTE: As positioned by default, A and B intersect as the rectangle {4, 4, 12, 12}.
|
|
// There is a 2 px buffer between the corner curves of A and the vertical edges of B, and
|
|
// a 1 px buffer between the corner curves of B and the horizontal edges of A. Since the shapes
|
|
// form a symmetric rounded cross, we can easily test edge and corner combinations by simply
|
|
// flipping signs and/or swapping x and y offsets.
|
|
|
|
// Successful intersection operations:
|
|
// - for clarity these are formed by moving A around to intersect with B in different ways.
|
|
// - the expected bounds of the round rect intersection is calculated automatically
|
|
// in check_success, so all we have to specify are the expected corner radii
|
|
|
|
// A and B intersect as a rectangle
|
|
verify_success(reporter, a, b, kRect, kRect, kRect, kRect);
|
|
// Move A to intersect B on a vertical edge, preserving two corners of A inside B
|
|
verify_success(reporter, a.makeOffset(6.f, 0.f), b, kA, kRect, kRect, kA);
|
|
verify_success(reporter, a.makeOffset(-6.f, 0.f), b, kRect, kA, kA, kRect);
|
|
// Move B to intersect A on a horizontal edge, preserving two corners of B inside A
|
|
verify_success(reporter, a, b.makeOffset(0.f, 6.f), kB, kB, kRect, kRect);
|
|
verify_success(reporter, a, b.makeOffset(0.f, -6.f), kRect, kRect, kB, kB);
|
|
// Move A to intersect B on a corner, preserving one corner of A and one of B
|
|
verify_success(reporter, a.makeOffset(-7.f, -8.f), b, kB, kRect, kA, kRect); // TL of B
|
|
verify_success(reporter, a.makeOffset(7.f, -8.f), b, kRect, kB, kRect, kA); // TR of B
|
|
verify_success(reporter, a.makeOffset(7.f, 8.f), b, kA, kRect, kB, kRect); // BR of B
|
|
verify_success(reporter, a.makeOffset(-7.f, 8.f), b, kRect, kA, kRect, kB); // BL of B
|
|
// An inset is contained inside the original (note that SkRRect::inset modifies radii too) so
|
|
// is returned unmodified when intersected.
|
|
verify_success(reporter, a, make_inset(a, 1.f, 1.f), kB, kB, kB, kB);
|
|
verify_success(reporter, make_inset(b, 2.f, 2.f), b, kA, kA, kA, kA);
|
|
|
|
// A rectangle exactly matching the corners of the rrect bounds keeps the rrect radii,
|
|
// regardless of whether or not it's the 1st or 2nd arg to ConservativeIntersect.
|
|
SkRRect c = SkRRect::MakeRectXY({0.f, 0.f, 10.f, 10.f}, 2.f, 2.f);
|
|
SkRRect cT = SkRRect::MakeRect({0.f, 0.f, 10.f, 5.f});
|
|
verify_success(reporter, c, cT, kA, kA, kRect, kRect);
|
|
verify_success(reporter, cT, c, kB, kB, kRect, kRect);
|
|
SkRRect cB = SkRRect::MakeRect({0.f, 5.f, 10.f, 10.});
|
|
verify_success(reporter, c, cB, kRect, kRect, kA, kA);
|
|
verify_success(reporter, cB, c, kRect, kRect, kB, kB);
|
|
SkRRect cL = SkRRect::MakeRect({0.f, 0.f, 5.f, 10.f});
|
|
verify_success(reporter, c, cL, kA, kRect, kRect, kA);
|
|
verify_success(reporter, cL, c, kB, kRect, kRect, kB);
|
|
SkRRect cR = SkRRect::MakeRect({5.f, 0.f, 10.f, 10.f});
|
|
verify_success(reporter, c, cR, kRect, kA, kA, kRect);
|
|
verify_success(reporter, cR, c, kRect, kB, kB, kRect);
|
|
|
|
// Failed intersection operations:
|
|
|
|
// A and B's bounds do not intersect
|
|
verify_failure(reporter, a.makeOffset(32.f, 0.f), b);
|
|
// A and B's bounds intersect, but corner curves do not -> no intersection
|
|
verify_failure(reporter, a.makeOffset(11.5f, -11.5f), b);
|
|
// A is empty -> no intersection
|
|
verify_failure(reporter, SkRRect::MakeEmpty(), b);
|
|
// A is contained in B, but is too close to the corner curves for the conservative
|
|
// approximations to construct a valid round rect intersection.
|
|
verify_failure(reporter, make_inset(b, 0.3f, 0.3f), b);
|
|
// A intersects a straight edge, but not far enough for B to contain A's corners
|
|
verify_failure(reporter, a.makeOffset(2.5f, 0.f), b);
|
|
verify_failure(reporter, a.makeOffset(-2.5f, 0.f), b);
|
|
// And vice versa for B into A
|
|
verify_failure(reporter, a, b.makeOffset(0.f, 1.5f));
|
|
verify_failure(reporter, a, b.makeOffset(0.f, -1.5f));
|
|
// A intersects a straight edge and part of B's corner
|
|
verify_failure(reporter, a.makeOffset(5.f, -2.f), b);
|
|
verify_failure(reporter, a.makeOffset(-5.f, -2.f), b);
|
|
verify_failure(reporter, a.makeOffset(5.f, 2.f), b);
|
|
verify_failure(reporter, a.makeOffset(-5.f, 2.f), b);
|
|
// And vice versa
|
|
verify_failure(reporter, a, b.makeOffset(3.f, -5.f));
|
|
verify_failure(reporter, a, b.makeOffset(-3.f, -5.f));
|
|
verify_failure(reporter, a, b.makeOffset(3.f, 5.f));
|
|
verify_failure(reporter, a, b.makeOffset(-3.f, 5.f));
|
|
// A intersects B on a corner, but the corner curves overlap each other
|
|
verify_failure(reporter, a.makeOffset(8.f, 10.f), b);
|
|
verify_failure(reporter, a.makeOffset(-8.f, 10.f), b);
|
|
verify_failure(reporter, a.makeOffset(8.f, -10.f), b);
|
|
verify_failure(reporter, a.makeOffset(-8.f, -10.f), b);
|
|
|
|
// Another variant of corners overlapping, this is two circles of radius r that overlap by r
|
|
// pixels (e.g. the leftmost point of the right circle touches the center of the left circle).
|
|
// The key difference with the above case is that the intersection of the circle bounds have
|
|
// corners that are contained in both circles, but because it is only r wide, can not satisfy
|
|
// all corners having radii = r.
|
|
float r = 100.f;
|
|
a = SkRRect::MakeOval(SkRect::MakeWH(2*r, 2*r));
|
|
verify_failure(reporter, a, a.makeOffset(r, 0.f));
|
|
}
|
|
|
|
DEF_TEST(RoundRect, reporter) {
|
|
test_round_rect_basic(reporter);
|
|
test_round_rect_rects(reporter);
|
|
test_round_rect_ovals(reporter);
|
|
test_round_rect_general(reporter);
|
|
test_round_rect_iffy_parameters(reporter);
|
|
test_inset(reporter);
|
|
test_round_rect_contains_rect(reporter);
|
|
test_round_rect_transform(reporter);
|
|
test_issue_2696(reporter);
|
|
test_tricky_radii(reporter);
|
|
test_empty_crbug_458524(reporter);
|
|
test_empty(reporter);
|
|
test_read(reporter);
|
|
test_inner_bounds(reporter);
|
|
test_conservative_intersection(reporter);
|
|
}
|
|
|
|
DEF_TEST(RRect_fuzzer_regressions, r) {
|
|
{
|
|
unsigned char buf[] = {
|
|
0x0a, 0x00, 0x00, 0xff, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f,
|
|
0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
|
|
0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
|
|
0x7f, 0x7f, 0x7f, 0x02, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x02, 0x00
|
|
};
|
|
REPORTER_ASSERT(r, sizeof(buf) == SkRRect{}.readFromMemory(buf, sizeof(buf)));
|
|
}
|
|
|
|
{
|
|
unsigned char buf[] = {
|
|
0x5d, 0xff, 0xff, 0x5d, 0x0a, 0x60, 0x0a, 0x0a, 0x0a, 0x7e, 0x0a, 0x5a,
|
|
0x0a, 0x12, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a,
|
|
0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x00, 0x00, 0x00, 0x0a,
|
|
0x0a, 0x0a, 0x0a, 0x26, 0x0a, 0x0a, 0x0a, 0x0a, 0xff, 0xff, 0x0a, 0x0a
|
|
};
|
|
REPORTER_ASSERT(r, sizeof(buf) == SkRRect{}.readFromMemory(buf, sizeof(buf)));
|
|
}
|
|
|
|
{
|
|
unsigned char buf[] = {
|
|
0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x04, 0xdd, 0xdd, 0x15,
|
|
0xfe, 0x00, 0x00, 0x04, 0x05, 0x7e, 0x00, 0x00, 0x00, 0xff, 0x08, 0x04,
|
|
0xff, 0xff, 0xfe, 0xfe, 0xff, 0x32, 0x32, 0x32, 0x32, 0x00, 0x32, 0x32,
|
|
0x04, 0xdd, 0x3d, 0x1c, 0xfe, 0x89, 0x04, 0x0a, 0x0e, 0x05, 0x7e, 0x0a
|
|
};
|
|
REPORTER_ASSERT(r, sizeof(buf) == SkRRect{}.readFromMemory(buf, sizeof(buf)));
|
|
}
|
|
}
|