70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
/*
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* PerspectiveTransformTest.cpp
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* zxing
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*
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* Created by Christian Brunschen on 12/05/2008.
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* Copyright 2008 Google UK. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "PerspectiveTransformTest.h"
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namespace zxing {
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using namespace std;
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static float EPSILON = 0.0001f;
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CPPUNIT_TEST_SUITE_REGISTRATION(PerspectiveTransformTest);
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void PerspectiveTransformTest::testSquareToQuadrilateral() {
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Ref<PerspectiveTransform> pt
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(PerspectiveTransform::squareToQuadrilateral
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(2.0f, 3.0f, 10.0f, 4.0f, 16.0f, 15.0f, 4.0f, 9.0f));
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assertPointEquals(2.0f, 3.0f, 0.0f, 0.0f, pt);
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assertPointEquals(10.0f, 4.0f, 1.0f, 0.0f, pt);
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assertPointEquals(4.0f, 9.0f, 0.0f, 1.0f, pt);
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assertPointEquals(16.0f, 15.0f, 1.0f, 1.0f, pt);
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assertPointEquals(6.535211f, 6.8873234f, 0.5f, 0.5f, pt);
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assertPointEquals(48.0f, 42.42857f, 1.5f, 1.5f, pt);
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}
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void PerspectiveTransformTest::testQuadrilateralToQuadrilateral() {
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Ref<PerspectiveTransform> pt
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(PerspectiveTransform::quadrilateralToQuadrilateral
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(2.0f, 3.0f, 10.0f, 4.0f, 16.0f, 15.0f, 4.0f, 9.0f,
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103.0f, 110.0f, 300.0f, 120.0f, 290.0f, 270.0f, 150.0f, 280.0f));
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assertPointEquals(103.0f, 110.0f, 2.0f, 3.0f, pt);
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assertPointEquals(300.0f, 120.0f, 10.0f, 4.0f, pt);
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assertPointEquals(290.0f, 270.0f, 16.0f, 15.0f, pt);
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assertPointEquals(150.0f, 280.0f, 4.0f, 9.0f, pt);
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assertPointEquals(7.1516876f, -64.60185f, 0.5f, 0.5f, pt);
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assertPointEquals(328.09116f, 334.16385f, 50.0f, 50.0f, pt);
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}
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void PerspectiveTransformTest::assertPointEquals(float expectedX,
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float expectedY,
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float sourceX,
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float sourceY,
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Ref<PerspectiveTransform> pt) {
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vector<float> points(2);
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points[0] = sourceX;
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points[1] = sourceY;
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pt->transformPoints(points);
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CPPUNIT_ASSERT_DOUBLES_EQUAL(expectedX, points[0], EPSILON);
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CPPUNIT_ASSERT_DOUBLES_EQUAL(expectedY, points[1], EPSILON);
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}
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}
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