зеркало из https://github.com/mozilla/moz-skia.git
66 строки
1.9 KiB
C++
66 строки
1.9 KiB
C++
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/*
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* Copyright 2011 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 "Test.h"
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#include "SkGeometry.h"
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static bool nearly_equal(const SkPoint& a, const SkPoint& b) {
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return SkScalarNearlyEqual(a.fX, b.fX) && SkScalarNearlyEqual(a.fY, b.fY);
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}
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static void testChopCubic(skiatest::Reporter* reporter) {
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/*
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Inspired by this test, which used to assert that the tValues had dups
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<path stroke="#202020" d="M0,0 C0,0 1,1 2190,5130 C2190,5070 2220,5010 2205,4980" />
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*/
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const SkPoint src[] = {
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{ SkIntToScalar(2190), SkIntToScalar(5130) },
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{ SkIntToScalar(2190), SkIntToScalar(5070) },
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{ SkIntToScalar(2220), SkIntToScalar(5010) },
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{ SkIntToScalar(2205), SkIntToScalar(4980) },
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};
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SkPoint dst[13];
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SkScalar tValues[3];
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// make sure we don't assert internally
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int count = SkChopCubicAtMaxCurvature(src, dst, tValues);
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if (false) { // avoid bit rot, suppress warning
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REPORTER_ASSERT(reporter, count);
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}
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}
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static void TestGeometry(skiatest::Reporter* reporter) {
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SkPoint pts[3], dst[5];
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pts[0].set(0, 0);
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pts[1].set(100, 50);
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pts[2].set(0, 100);
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int count = SkChopQuadAtMaxCurvature(pts, dst);
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REPORTER_ASSERT(reporter, count == 1 || count == 2);
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pts[0].set(0, 0);
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pts[1].set(SkIntToScalar(3), 0);
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pts[2].set(SkIntToScalar(3), SkIntToScalar(3));
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SkConvertQuadToCubic(pts, dst);
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const SkPoint cubic[] = {
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{ 0, 0, },
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{ SkIntToScalar(2), 0, },
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{ SkIntToScalar(3), SkIntToScalar(1), },
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{ SkIntToScalar(3), SkIntToScalar(3) },
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};
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for (int i = 0; i < 4; ++i) {
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REPORTER_ASSERT(reporter, nearly_equal(cubic[i], dst[i]));
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}
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testChopCubic(reporter);
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}
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#include "TestClassDef.h"
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DEFINE_TESTCLASS("Geometry", GeometryTestClass, TestGeometry)
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