93 lines
3.0 KiB
C++
93 lines
3.0 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/SkPoint.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkTypes.h"
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#include "src/pathops/SkPathOpsPoint.h"
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#include "src/pathops/SkPathOpsTypes.h"
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#include "tests/PathOpsTestCommon.h"
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#include "tests/Test.h"
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#include <array>
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#include <cmath>
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#include <cstddef>
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#include <limits>
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static const SkDPoint tests[] = {
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{0, 0},
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{1, 0},
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{0, 1},
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{2, 1},
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{1, 2},
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{1, 1},
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{2, 2}
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};
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static const size_t tests_count = std::size(tests);
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DEF_TEST(PathOpsDVector, reporter) {
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for (size_t index = 0; index < tests_count - 1; ++index) {
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SkDVector v1 = tests[index + 1] - tests[index];
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SkASSERT(ValidVector(v1));
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SkDVector v2 = tests[index] - tests[index + 1];
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SkASSERT(ValidVector(v2));
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v1 += v2;
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REPORTER_ASSERT(reporter, v1.fX == 0 && v1.fY == 0);
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v2 -= static_cast<decltype(v2)&>(v2);
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REPORTER_ASSERT(reporter, v2.fX == 0 && v2.fY == 0);
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v1 = tests[index + 1] - tests[index];
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v1 /= 2;
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v1 *= 2;
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v1 -= tests[index + 1] - tests[index];
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REPORTER_ASSERT(reporter, v1.fX == 0 && v1.fY == 0);
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SkVector sv = v1.asSkVector();
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REPORTER_ASSERT(reporter, sv.fX == 0 && sv.fY == 0);
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v1 = tests[index + 1] - tests[index];
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double lenSq = v1.lengthSquared();
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double v1Dot = v1.dot(v1);
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REPORTER_ASSERT(reporter, lenSq == v1Dot);
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REPORTER_ASSERT(reporter, approximately_equal(sqrt(lenSq), v1.length()));
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double v1Cross = v1.cross(v1);
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REPORTER_ASSERT(reporter, v1Cross == 0);
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}
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}
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DEF_TEST(SkDVector_normalize, reporter) {
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// See also SkVx_normalize
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auto assertDoublesEqual = [&](double left, double right) {
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REPORTER_ASSERT(reporter, SkScalarNearlyEqual(left, right), "%f != %f", left, right);
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};
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SkDVector first{1.2, 3.4};
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first.normalize();
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REPORTER_ASSERT(reporter, first.isFinite());
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assertDoublesEqual(first.fX, 0.332820);
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assertDoublesEqual(first.fY, 0.942990);
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SkDVector second{2.3, -4.5};
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second.normalize();
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REPORTER_ASSERT(reporter, second.isFinite());
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assertDoublesEqual(second.fX, 0.455111);
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assertDoublesEqual(second.fY, -0.890435);
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}
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DEF_TEST(SkDVector_normalize_infinity_and_nan, reporter) {
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// See also SkVx_normalize_infinity_and_nan
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SkDVector first{0, 0};
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first.normalize();
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REPORTER_ASSERT(reporter, !first.isFinite());
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REPORTER_ASSERT(reporter, std::isnan(first.fX), "%f is not nan", first.fX);
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REPORTER_ASSERT(reporter, std::isnan(first.fY), "%f is not nan", first.fY);
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SkDVector second{std::numeric_limits<double>::max(),
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std::numeric_limits<double>::max()};
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second.normalize();
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REPORTER_ASSERT(reporter, second.isFinite());
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REPORTER_ASSERT(reporter, second.fX == 0, "%f != 0", second.fX);
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REPORTER_ASSERT(reporter, second.fY == 0, "%f != 0", second.fY);
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}
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