1 2/* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8// Unit tests for src/core/SkPoint.cpp and its header 9 10#include "SkPoint.h" 11#include "Test.h" 12 13// Tests that SkPoint::length() and SkPoint::Length() both return 14// approximately expectedLength for this (x,y). 15static void test_length(skiatest::Reporter* reporter, SkScalar x, SkScalar y, 16 SkScalar expectedLength) { 17 SkPoint point; 18 point.set(x, y); 19 SkScalar s1 = point.length(); 20 SkScalar s2 = SkPoint::Length(x, y); 21 //The following should be exactly the same, but need not be. 22 //See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=323 23 REPORTER_ASSERT(reporter, SkScalarNearlyEqual(s1, s2)); 24 REPORTER_ASSERT(reporter, SkScalarNearlyEqual(s1, expectedLength)); 25} 26 27// Tests SkPoint::Normalize() for this (x,y) 28static void test_Normalize(skiatest::Reporter* reporter, 29 SkScalar x, SkScalar y) { 30 SkPoint point; 31 point.set(x, y); 32 SkScalar oldLength = point.length(); 33 SkScalar returned = SkPoint::Normalize(&point); 34 SkScalar newLength = point.length(); 35 REPORTER_ASSERT(reporter, SkScalarNearlyEqual(returned, oldLength)); 36 REPORTER_ASSERT(reporter, SkScalarNearlyEqual(newLength, SK_Scalar1)); 37} 38 39static void PointTest(skiatest::Reporter* reporter) { 40 test_length(reporter, SkIntToScalar(3), SkIntToScalar(4), SkIntToScalar(5)); 41 test_length(reporter, SkFloatToScalar(0.6f), SkFloatToScalar(0.8f), 42 SK_Scalar1); 43 test_Normalize(reporter, SkIntToScalar(3), SkIntToScalar(4)); 44 test_Normalize(reporter, SkFloatToScalar(0.6f), SkFloatToScalar(0.8f)); 45} 46 47#include "TestClassDef.h" 48DEFINE_TESTCLASS("Point", PointTestClass, PointTest) 49