c7d0ea3cd3
of SkScalars. Review URL: https://codereview.chromium.org/12530010 git-svn-id: http://skia.googlecode.com/svn/trunk@8041 2bbb7eff-a529-9590-31e7-b0007b416f81
63 lines
2.1 KiB
C++
63 lines
2.1 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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// Unit tests for src/core/SkPoint.cpp and its header
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#include "SkPoint.h"
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#include "SkRect.h"
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#include "Test.h"
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static void test_casts(skiatest::Reporter* reporter) {
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SkPoint p = { 0, 0 };
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SkRect r = { 0, 0, 0, 0 };
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const SkScalar* pPtr = SkTCast<const SkScalar*>(&p);
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const SkScalar* rPtr = SkTCast<const SkScalar*>(&r);
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REPORTER_ASSERT(reporter, p.asScalars() == pPtr);
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REPORTER_ASSERT(reporter, r.asScalars() == rPtr);
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}
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// Tests that SkPoint::length() and SkPoint::Length() both return
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// approximately expectedLength for this (x,y).
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static void test_length(skiatest::Reporter* reporter, SkScalar x, SkScalar y,
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SkScalar expectedLength) {
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SkPoint point;
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point.set(x, y);
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SkScalar s1 = point.length();
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SkScalar s2 = SkPoint::Length(x, y);
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//The following should be exactly the same, but need not be.
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//See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=323
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REPORTER_ASSERT(reporter, SkScalarNearlyEqual(s1, s2));
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REPORTER_ASSERT(reporter, SkScalarNearlyEqual(s1, expectedLength));
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}
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// Tests SkPoint::Normalize() for this (x,y)
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static void test_Normalize(skiatest::Reporter* reporter,
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SkScalar x, SkScalar y) {
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SkPoint point;
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point.set(x, y);
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SkScalar oldLength = point.length();
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SkScalar returned = SkPoint::Normalize(&point);
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SkScalar newLength = point.length();
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REPORTER_ASSERT(reporter, SkScalarNearlyEqual(returned, oldLength));
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REPORTER_ASSERT(reporter, SkScalarNearlyEqual(newLength, SK_Scalar1));
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}
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static void PointTest(skiatest::Reporter* reporter) {
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test_casts(reporter);
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test_length(reporter, SkIntToScalar(3), SkIntToScalar(4), SkIntToScalar(5));
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test_length(reporter, SkFloatToScalar(0.6f), SkFloatToScalar(0.8f),
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SK_Scalar1);
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test_Normalize(reporter, SkIntToScalar(3), SkIntToScalar(4));
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test_Normalize(reporter, SkFloatToScalar(0.6f), SkFloatToScalar(0.8f));
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}
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#include "TestClassDef.h"
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DEFINE_TESTCLASS("Point", PointTestClass, PointTest)
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