зеркало из https://github.com/mozilla/moz-skia.git
72 строки
2.7 KiB
C++
72 строки
2.7 KiB
C++
/*
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* Copyright 2013 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 "SkPathOpsCubic.h"
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#include "SkPathOpsQuad.h"
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#include "SkReduceOrder.h"
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#include "Test.h"
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static struct lineCubic {
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SkDCubic cubic;
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SkDQuad quad;
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int answerCount;
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SkDPoint answers[2];
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} quadCubicTests[] = {
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{{{{10,234}, {10,229.58172607421875}, {13.581720352172852,226}, {18,226}}},
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{{{18,226}, {14.686291694641113,226}, {12.342399597167969,228.3424072265625}}}, 1,
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{{18,226}, {0,0}}},
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{{{{10,234}, {10,229.58172607421875}, {13.581720352172852,226}, {18,226}}},
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{{{12.342399597167969,228.3424072265625}, {10,230.68629455566406}, {10,234}}}, 1,
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{{10,234}, {0,0}}},
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};
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static const size_t quadCubicTests_count = SK_ARRAY_COUNT(quadCubicTests);
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static void PathOpsCubicQuadIntersectionTest(skiatest::Reporter* reporter) {
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for (size_t index = 0; index < quadCubicTests_count; ++index) {
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int iIndex = static_cast<int>(index);
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const SkDCubic& cubic = quadCubicTests[index].cubic;
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const SkDQuad& quad = quadCubicTests[index].quad;
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SkReduceOrder reduce1;
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SkReduceOrder reduce2;
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int order1 = reduce1.reduce(cubic, SkReduceOrder::kNo_Quadratics,
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SkReduceOrder::kFill_Style);
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int order2 = reduce2.reduce(quad, SkReduceOrder::kFill_Style);
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if (order1 != 4) {
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SkDebugf("[%d] cubic order=%d\n", iIndex, order1);
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REPORTER_ASSERT(reporter, 0);
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}
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if (order2 != 3) {
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SkDebugf("[%d] quad order=%d\n", iIndex, order2);
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REPORTER_ASSERT(reporter, 0);
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}
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SkIntersections i;
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int roots = i.intersect(cubic, quad);
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SkASSERT(roots == quadCubicTests[index].answerCount);
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for (int pt = 0; pt < roots; ++pt) {
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double tt1 = i[0][pt];
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SkDPoint xy1 = cubic.xyAtT(tt1);
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double tt2 = i[1][pt];
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SkDPoint xy2 = quad.xyAtT(tt2);
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if (!xy1.approximatelyEqual(xy2)) {
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SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
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__FUNCTION__, iIndex, pt, tt1, xy1.fX, xy1.fY, tt2, xy2.fX, xy2.fY);
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}
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REPORTER_ASSERT(reporter, xy1.approximatelyEqual(xy2));
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bool found = false;
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for (int idx2 = 0; idx2 < quadCubicTests[index].answerCount; ++idx2) {
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found |= quadCubicTests[index].answers[idx2].approximatelyEqual(xy1);
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}
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REPORTER_ASSERT(reporter, found);
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}
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reporter->bumpTestCount();
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}
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}
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#include "TestClassDef.h"
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DEFINE_TESTCLASS_SHORT(PathOpsCubicQuadIntersectionTest)
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