4f4c5fcfdf
This is a combination of running clang-tidy with modernize-use-nullptr check for some ports (GTK, X11, OSX) and manual changes to the ports for which it couldn't be used easily (MSW, DFB) and also manually updating the docs. Also replace NULL with null or nullptr in the comments as this is more consistent with the use of nullptr in the code and makes it simpler to grep for the remaining occurrences of NULL itself. And also use null in the assert messages. Only a few occurrences of "NULL" are still left in non-C files, mostly corresponding to unclear comments or string output which it might not be safe to change.
537 lines
16 KiB
C++
537 lines
16 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: tests/graphics/affinetransform.cpp
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// Purpose: Unit test for transformations implemented for wxAffineMatrix2D
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// Author: Catalin Raceanu
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// Created: 2011-04-14
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// Copyright: (c) 2011 wxWidgets development team
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///////////////////////////////////////////////////////////////////////////////
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "testprec.h"
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#include "wx/graphics.h"
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#include "wx/dcmemory.h"
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#include "wx/affinematrix2d.h"
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#include "wx/math.h"
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#if wxUSE_GRAPHICS_CONTEXT
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#include "wx/dcgraph.h"
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#endif // wxUSE_GRAPHICS_CONTEXT
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#include "testimage.h"
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// ----------------------------------------------------------------------------
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// Affine transform test class
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// ----------------------------------------------------------------------------
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class AffineTransformTestCase : public CppUnit::TestCase
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{
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public:
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AffineTransformTestCase() {}
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private:
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CPPUNIT_TEST_SUITE( AffineTransformTestCase );
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CPPUNIT_TEST( InvertMatrix );
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CPPUNIT_TEST( Concat );
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CPPUNIT_TEST_SUITE_END();
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void InvertMatrix();
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void Concat();
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wxDECLARE_NO_COPY_CLASS(AffineTransformTestCase);
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( AffineTransformTestCase );
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// also include in its own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( AffineTransformTestCase, "AffineTransformTestCase" );
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void AffineTransformTestCase::InvertMatrix()
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{
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wxAffineMatrix2D matrix1;
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matrix1.Set(wxMatrix2D(2, 1, 1, 1), wxPoint2DDouble(1, 1));
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wxAffineMatrix2D matrix2(matrix1);
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matrix2.Invert();
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wxMatrix2D m;
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wxPoint2DDouble p;
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matrix2.Get(&m, &p);
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CPPUNIT_ASSERT_EQUAL( 1, (int)m.m_11 );
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CPPUNIT_ASSERT_EQUAL( -1, (int)m.m_12 );
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CPPUNIT_ASSERT_EQUAL( -1, (int)m.m_21 );
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CPPUNIT_ASSERT_EQUAL( 2, (int)m.m_22 );
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CPPUNIT_ASSERT_EQUAL( 0, (int)p.m_x );
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CPPUNIT_ASSERT_EQUAL( -1, (int)p.m_y );
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matrix2.Concat(matrix1);
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CPPUNIT_ASSERT( matrix2.IsIdentity() );
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}
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void AffineTransformTestCase::Concat()
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{
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wxAffineMatrix2D m1;
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m1.Set(wxMatrix2D(0.9, 0.4, -0.4, 0.9), wxPoint2DDouble(0.0, 0.0));
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wxAffineMatrix2D m2;
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m2.Set(wxMatrix2D(1.0, 0.0, 0.0, 1.0), wxPoint2DDouble(3.0, 5.0));
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m1.Concat(m2);
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wxMatrix2D m;
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wxPoint2DDouble p;
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m1.Get(&m, &p);
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const double delta = 0.01;
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CPPUNIT_ASSERT_DOUBLES_EQUAL( 0.9, m.m_11, delta );
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CPPUNIT_ASSERT_DOUBLES_EQUAL( 0.4, m.m_12, delta );
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CPPUNIT_ASSERT_DOUBLES_EQUAL( -0.4, m.m_21, delta );
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CPPUNIT_ASSERT_DOUBLES_EQUAL( 0.9, m.m_22, delta );
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CPPUNIT_ASSERT_DOUBLES_EQUAL( 0.7, p.m_x, delta );
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CPPUNIT_ASSERT_DOUBLES_EQUAL( 5.7, p.m_y, delta );
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}
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#if wxUSE_DC_TRANSFORM_MATRIX
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// -------------------------------
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// Transform matrix test classes
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// -------------------------------
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// ====================
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// wxDC / wxGCDC tests
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// ====================
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class TransformMatrixTestCaseDCBase : public CppUnit::TestCase
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{
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public:
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TransformMatrixTestCaseDCBase()
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{
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m_dc = nullptr;
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wxImage::AddHandler(new wxJPEGHandler);
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m_imgOrig.LoadFile(wxS("horse.jpg"));
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CPPUNIT_ASSERT( m_imgOrig.IsOk() );
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}
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virtual ~TransformMatrixTestCaseDCBase()
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{
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}
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virtual void setUp() override
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{
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m_bmpOrig = wxBitmap(m_imgOrig);
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m_bmpUsingMatrix.Create(m_bmpOrig.GetSize(), m_bmpOrig.GetDepth());
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}
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protected:
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virtual void FlushDC() = 0;
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void VMirrorAndTranslate();
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void Rotate90Clockwise();
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#if wxUSE_GRAPHICS_CONTEXT
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void CompareToGraphicsContext();
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#endif // wxUSE_GRAPHICS_CONTEXT
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protected:
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wxImage m_imgOrig;
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wxBitmap m_bmpOrig;
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wxBitmap m_bmpUsingMatrix;
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wxDC* m_dc;
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wxDECLARE_NO_COPY_CLASS(TransformMatrixTestCaseDCBase);
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};
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// ===========
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// wxDC tests
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// ===========
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class TransformMatrixTestCaseDC : public TransformMatrixTestCaseDCBase
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{
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public:
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TransformMatrixTestCaseDC()
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{
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m_dc = &m_mdc;
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}
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virtual ~TransformMatrixTestCaseDC()
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{
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}
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virtual void setUp() override
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{
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TransformMatrixTestCaseDCBase::setUp();
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m_mdc.SelectObject(m_bmpUsingMatrix);
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}
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virtual void tearDown() override
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{
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m_mdc.SelectObject(wxNullBitmap);
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TransformMatrixTestCaseDCBase::tearDown();
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}
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protected:
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virtual void FlushDC() override {}
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private:
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CPPUNIT_TEST_SUITE( TransformMatrixTestCaseDC );
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CPPUNIT_TEST( VMirrorAndTranslate );
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CPPUNIT_TEST( Rotate90Clockwise );
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#if wxUSE_GRAPHICS_CONTEXT
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CPPUNIT_TEST( CompareToGraphicsContext );
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#endif // wxUSE_GRAPHICS_CONTEXT
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CPPUNIT_TEST_SUITE_END();
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protected:
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wxMemoryDC m_mdc;
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wxDECLARE_NO_COPY_CLASS(TransformMatrixTestCaseDC);
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( TransformMatrixTestCaseDC );
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// also include in it's own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TransformMatrixTestCaseDC, "TransformMatrixTestCaseDC" );
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#if wxUSE_GRAPHICS_CONTEXT
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// =============
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// wxGCDC tests
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// =============
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class TransformMatrixTestCaseGCDC : public TransformMatrixTestCaseDC
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{
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public:
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TransformMatrixTestCaseGCDC() {}
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virtual ~TransformMatrixTestCaseGCDC() {}
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virtual void setUp() override
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{
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TransformMatrixTestCaseDC::setUp();
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m_gcdc = new wxGCDC(m_mdc);
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m_dc = m_gcdc;
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wxGraphicsContext* ctx = m_gcdc->GetGraphicsContext();
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ctx->SetAntialiasMode(wxANTIALIAS_NONE);
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}
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virtual void tearDown() override
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{
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delete m_gcdc;
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TransformMatrixTestCaseDC::tearDown();
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}
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protected:
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virtual void FlushDC() override
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{
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m_gcdc->GetGraphicsContext()->Flush();
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}
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private:
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CPPUNIT_TEST_SUITE( TransformMatrixTestCaseGCDC );
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CPPUNIT_TEST( VMirrorAndTranslate );
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CPPUNIT_TEST( Rotate90Clockwise );
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CPPUNIT_TEST_SUITE_END();
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protected:
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wxGCDC* m_gcdc;
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wxDECLARE_NO_COPY_CLASS(TransformMatrixTestCaseGCDC);
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};
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// For MSW we have individual test cases for each graphics renderer
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// so we don't need to test wxGCDC with default renderer.
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#ifndef __WXMSW__
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( TransformMatrixTestCaseGCDC );
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// also include in it's own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TransformMatrixTestCaseGCDC, "TransformMatrixTestCaseGCDC" );
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#endif // !__WXMSW__
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#ifdef __WXMSW__
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// GDI+ and Direct2D are available only under MSW.
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#if wxUSE_GRAPHICS_GDIPLUS
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class TransformMatrixTestCaseGCDCGDIPlus : public TransformMatrixTestCaseGCDC
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{
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public:
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TransformMatrixTestCaseGCDCGDIPlus() {}
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virtual ~TransformMatrixTestCaseGCDCGDIPlus() {}
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virtual void setUp() override
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{
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TransformMatrixTestCaseGCDC::setUp();
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wxGraphicsRenderer* rend = wxGraphicsRenderer::GetGDIPlusRenderer();
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wxGraphicsContext* ctx = rend->CreateContext(m_mdc);
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m_gcdc->SetGraphicsContext(ctx);
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}
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private:
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CPPUNIT_TEST_SUITE( TransformMatrixTestCaseGCDCGDIPlus );
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CPPUNIT_TEST( VMirrorAndTranslate );
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CPPUNIT_TEST( Rotate90Clockwise );
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CPPUNIT_TEST_SUITE_END();
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protected:
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wxDECLARE_NO_COPY_CLASS(TransformMatrixTestCaseGCDCGDIPlus);
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( TransformMatrixTestCaseGCDCGDIPlus );
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// also include in it's own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TransformMatrixTestCaseGCDCGDIPlus, "TransformMatrixTestCaseGCDCGDIPlus" );
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#endif // wxUSE_GRAPHICS_GDIPLUS
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#if wxUSE_GRAPHICS_DIRECT2D
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class TransformMatrixTestCaseGCDCDirect2D : public TransformMatrixTestCaseGCDC
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{
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public:
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TransformMatrixTestCaseGCDCDirect2D() {}
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virtual ~TransformMatrixTestCaseGCDCDirect2D() {}
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virtual void setUp() override
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{
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TransformMatrixTestCaseGCDC::setUp();
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wxGraphicsRenderer* rend = wxGraphicsRenderer::GetDirect2DRenderer();
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wxGraphicsContext* ctx = rend->CreateContext(m_mdc);
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m_gcdc->SetGraphicsContext(ctx);
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}
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virtual void FlushDC() override
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{
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// Apparently, flushing native Direct2D renderer
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// is not enough to update underlying DC (bitmap)
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// and therefore we have to destroy the renderer
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// to do so.
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TransformMatrixTestCaseGCDC::FlushDC();
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m_gcdc->SetGraphicsContext(nullptr);
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}
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private:
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CPPUNIT_TEST_SUITE( TransformMatrixTestCaseGCDCDirect2D );
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CPPUNIT_TEST( VMirrorAndTranslate );
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CPPUNIT_TEST( Rotate90Clockwise );
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CPPUNIT_TEST_SUITE_END();
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protected:
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wxDECLARE_NO_COPY_CLASS(TransformMatrixTestCaseGCDCDirect2D);
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( TransformMatrixTestCaseGCDCDirect2D );
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// also include in it's own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TransformMatrixTestCaseGCDCDirect2D, "TransformMatrixTestCaseGCDCDirect2D" );
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#endif // wxUSE_GRAPHICS_DIRECT2D
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#endif // __WXMSW__
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#if wxUSE_CAIRO
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class TransformMatrixTestCaseGCDCCairo : public TransformMatrixTestCaseGCDC
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{
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public:
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TransformMatrixTestCaseGCDCCairo() {}
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virtual ~TransformMatrixTestCaseGCDCCairo() {}
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virtual void setUp() override
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{
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TransformMatrixTestCaseGCDC::setUp();
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wxGraphicsRenderer* rend = wxGraphicsRenderer::GetCairoRenderer();
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wxGraphicsContext* ctx = rend->CreateContext(m_mdc);
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m_gcdc->SetGraphicsContext(ctx);
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}
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private:
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CPPUNIT_TEST_SUITE( TransformMatrixTestCaseGCDCCairo );
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CPPUNIT_TEST( VMirrorAndTranslate );
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CPPUNIT_TEST( Rotate90Clockwise );
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CPPUNIT_TEST_SUITE_END();
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protected:
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wxDECLARE_NO_COPY_CLASS(TransformMatrixTestCaseGCDCCairo);
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( TransformMatrixTestCaseGCDCCairo );
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// also include in it's own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TransformMatrixTestCaseGCDCCairo, "TransformMatrixTestCaseGCDCCairo" );
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#endif // wxUSE_CAIRO
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#endif // wxUSE_GRAPHICS_CONTEXT
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void TransformMatrixTestCaseDCBase::VMirrorAndTranslate()
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{
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// build the mirrored image using the transformation matrix
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if ( !m_dc->CanUseTransformMatrix() )
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return;
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wxAffineMatrix2D matrix;
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matrix.Mirror(wxVERTICAL);
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// For wxDC pixel center is at (0, 0) so row 0 of the bitmap is the axis
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// of mirroring and it is left intact by the transformation. In this case
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// mirrored bitmap needs to be shifted by dim-1 pixels.
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// For wxGCDC pixel center of underlying wxGraphicsContext is at (0.5, 0.5)
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// so the axis of mirroring is above row 0 of the bitmap and this row
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// is affected by the transformation. In this case mirrored bitmap
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// needs to be shifthed by dim pixels.
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int ty;
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#if wxUSE_GRAPHICS_CONTEXT
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if ( m_dc->GetGraphicsContext() )
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ty = m_bmpOrig.GetHeight();
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else
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#endif // wxUSE_GRAPHICS_CONTEXT
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ty = m_bmpOrig.GetHeight() - 1;
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matrix.Translate(0, -ty);
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m_dc->SetTransformMatrix(matrix);
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m_dc->DrawBitmap(m_bmpOrig, 0, 0);
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FlushDC();
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CHECK_THAT( m_bmpUsingMatrix.ConvertToImage(),
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RGBSameAs(m_imgOrig.Mirror(false)) );
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}
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void TransformMatrixTestCaseDCBase::Rotate90Clockwise()
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{
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// build the rotated image using the transformation matrix
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if ( !m_dc->CanUseTransformMatrix() )
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return;
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wxAffineMatrix2D matrix;
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matrix.Rotate(0.5 * M_PI);
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matrix.Translate(0, -m_bmpOrig.GetHeight());
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m_dc->SetTransformMatrix(matrix);
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m_dc->DrawBitmap(m_bmpOrig, 0, 0);
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FlushDC();
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CHECK_THAT( m_bmpUsingMatrix.ConvertToImage(),
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RGBSameAs(m_imgOrig.Rotate90(true)) );
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}
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#if wxUSE_GRAPHICS_CONTEXT
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void TransformMatrixTestCaseDCBase::CompareToGraphicsContext()
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{
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wxPoint2DDouble pointA1(1.0, 3.0), pointA2(60.0, 50.0),
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pointG1(1.0, 3.0), pointG2(60.0, 50.0);
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// Create affine matrix and transform it
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wxAffineMatrix2D matrixA1, matrixA2;
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matrixA2.Rotate(M_PI / 3);
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matrixA1.Translate(-m_bmpOrig.GetWidth()/2, -m_bmpOrig.GetHeight()/2);
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matrixA1.Rotate(-M_PI *2/ 6);
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matrixA1.Translate(m_bmpOrig.GetWidth()/2, m_bmpOrig.GetHeight()/2);
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matrixA1.Mirror(wxHORIZONTAL);
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matrixA1.Concat(matrixA2);
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matrixA1.Mirror(wxVERTICAL);
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matrixA1.Translate(m_bmpOrig.GetWidth()/2, -m_bmpOrig.GetHeight()/2);
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matrixA1.Scale(0.9, 0.9);
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matrixA1.Invert();
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// Create image using first matrix
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wxBitmap bmpUsingMatrixA1(m_bmpOrig.GetSize(), m_bmpOrig.GetDepth());
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// Build the transformed image using the transformation matrix
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{
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wxMemoryDC dc(bmpUsingMatrixA1);
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if ( !dc.CanUseTransformMatrix() )
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return;
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// Draw the bitmap
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dc.SetTransformMatrix(matrixA1);
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dc.DrawBitmap(m_bmpOrig, 0, 0);
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// Draw a line
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matrixA1.TransformPoint(&pointA1.m_x, &pointA1.m_y);
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matrixA1.TransformDistance(&pointA2.m_x, &pointA2.m_y);
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dc.DrawLine(wxRound(pointA1.m_x), wxRound(pointA1.m_y),
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wxRound(pointA1.m_x + pointA2.m_x), wxRound(pointA1.m_x + pointA2.m_y));
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}
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// Create graphics matrix and transform it
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wxGraphicsRenderer* r;
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if ( m_dc->GetGraphicsContext() )
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{
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r = m_dc->GetGraphicsContext()->GetRenderer();
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}
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else
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{
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r = wxGraphicsRenderer::GetDefaultRenderer();
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}
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wxBitmap bmp(10, 10);
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wxMemoryDC mDc(bmp);
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wxGraphicsContext* gDc = r->CreateContext(mDc);
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wxGraphicsMatrix matrixG1 = gDc->CreateMatrix();
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wxGraphicsMatrix matrixG2 = gDc->CreateMatrix();
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matrixG2.Rotate(M_PI / 3);
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matrixG1.Translate(-m_bmpOrig.GetWidth()/2, -m_bmpOrig.GetHeight()/2);
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matrixG1.Rotate(-M_PI*2 / 6);
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matrixG1.Translate(m_bmpOrig.GetWidth()/2, m_bmpOrig.GetHeight()/2);
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matrixG1.Scale(-1, 1);
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matrixG1.Concat(matrixG2);
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matrixG1.Scale(1, -1);
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matrixG1.Translate(m_bmpOrig.GetWidth()/2, -m_bmpOrig.GetHeight()/2);
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matrixG1.Scale(0.9, 0.9);
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matrixG1.Invert();
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// Create affine matrix from the graphics matrix
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wxMatrix2D mat2D;
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wxPoint2DDouble tr;
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matrixG1.Get(&mat2D.m_11, &mat2D.m_12, &mat2D.m_21, &mat2D.m_22, &tr.m_x, &tr.m_y);
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wxAffineMatrix2D matrixAG;
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matrixAG.Set(mat2D, tr);
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delete gDc;
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// Create image using last matrix
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wxBitmap bmpUsingMatrixAG(m_bmpOrig.GetHeight(), m_bmpOrig.GetWidth());
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// Build the transformed image using the transformation matrix
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{
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wxMemoryDC dc(bmpUsingMatrixAG);
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if ( !dc.CanUseTransformMatrix() )
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return;
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// Draw the bitmap
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dc.SetTransformMatrix(matrixAG);
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dc.DrawBitmap(m_bmpOrig, 0, 0);
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// Draw a line
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matrixG1.TransformPoint(&pointG1.m_x, &pointG1.m_y);
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matrixG1.TransformDistance(&pointG2.m_x, &pointG2.m_y);
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dc.DrawLine(wxRound(pointG1.m_x), wxRound(pointG1.m_y),
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wxRound(pointG1.m_x + pointG2.m_x), wxRound(pointG1.m_x + pointG2.m_y));
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}
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CHECK_THAT( bmpUsingMatrixA1.ConvertToImage(),
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RGBSameAs(bmpUsingMatrixAG.ConvertToImage()) );
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// Save the images to check that something _is_ inside the visible area.
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//bmpUsingMatrixA1.SaveFile("matrixA1.jpg", wxBITMAP_TYPE_JPEG);
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//bmpUsingMatrixAG.SaveFile("matrixAG.jpg", wxBITMAP_TYPE_JPEG);
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}
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#endif // wxUSE_GRAPHICS_CONTEXT
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#endif // wxUSE_DC_TRANSFORM_MATRIX
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