27c015dfcf
Tight quads and conics may nearly fold over on themselves, confusing coincidence against other curves. Split them at their max curvature early on to avoid complicating later logic. TBR=reed@google.com BUG=skia:5131 GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2357353002 Review-Url: https://codereview.chromium.org/2357353002
81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/*
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* Copyright 2014 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 "SkIntersections.h"
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#include "SkTDArray.h"
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#include "Test.h"
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// check intersections for consistency
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struct Curve {
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int ptCount;
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SkDCubic curve; // largest can hold lines / quads/ cubics
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};
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static const Curve testSet0[] = { // extracted from skpClip2
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{4, {{{134,11414}, {131.990234,11414}, {130.32666,11415.4824}, {130.042755,11417.4131}}} },
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{4, {{{130.042755,11417.4131}, {130.233124,11418.3193}, {131.037079,11419}, {132,11419}}} },
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{4, {{{132,11419}, {130.895432,11419}, {130,11418.1045}, {130,11417}}} },
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};
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static const Curve testSet1[] = { // extracted from cubicOp85i
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{4, {{{3,4}, {1,5}, {4,3}, {6,4}}} },
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{1, {{{6,4}, {3,4}}} },
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{4, {{{3,4}, {4,6}, {4,3}, {5,1}}} },
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{1, {{{5,1}, {3,4}}} },
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};
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static const struct TestSet {
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const Curve* tests;
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int testCount;
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} testSets[] = {
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{ testSet0, (int) SK_ARRAY_COUNT(testSet0) },
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{ testSet1, (int) SK_ARRAY_COUNT(testSet1) },
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};
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static const int testSetsCount = (int) SK_ARRAY_COUNT(testSets);
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static void testSetTest(skiatest::Reporter* reporter, int index) {
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const TestSet& testSet = testSets[index];
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int testCount = testSet.testCount;
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SkASSERT(testCount > 1);
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SkTDArray<SkIntersections> combos;
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for (int outer = 0; outer < testCount - 1; ++outer) {
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const Curve& oTest = testSet.tests[outer];
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for (int inner = outer + 1; inner < testCount; ++inner) {
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const Curve& iTest = testSet.tests[inner];
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SkIntersections* i = combos.append();
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sk_bzero(i, sizeof(SkIntersections));
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SkDLine oLine = {{ oTest.curve[0], oTest.curve[1] }};
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SkDLine iLine = {{ iTest.curve[0], iTest.curve[1] }};
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if (oTest.ptCount == 1 && iTest.ptCount == 1) {
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i->intersect(oLine, iLine);
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} else if (oTest.ptCount == 1 && iTest.ptCount == 4) {
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i->intersect(iTest.curve, oLine);
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} else if (oTest.ptCount == 4 && iTest.ptCount == 1) {
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i->intersect(oTest.curve, iLine);
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} else if (oTest.ptCount == 4 && iTest.ptCount == 4) {
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i->intersect(oTest.curve, iTest.curve);
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} else {
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SkASSERT(0);
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}
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// i->dump();
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}
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}
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}
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DEF_TEST(PathOpsThreeWay, reporter) {
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for (int index = 0; index < testSetsCount; ++index) {
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testSetTest(reporter, index);
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reporter->bumpTestCount();
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}
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}
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DEF_TEST(PathOpsThreeWayOneOff, reporter) {
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int index = 0;
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testSetTest(reporter, index);
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}
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