--- /dev/null
+///////////////////////////////////////////////////////////////////////////////
+// Name: tests/graphics/affinetransform.cpp
+// Purpose: Unit test for transformations implemented for wxAffineMatrix2D
+// Author: Catalin Raceanu
+// Created: 2011-04-14
+// Copyright: (c) 2011 wxWidgets development team
+///////////////////////////////////////////////////////////////////////////////
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "testprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#include "wx/dcmemory.h"
+#include "wx/affinematrix2d.h"
+#include "wx/math.h"
+
+#include "testimage.h"
+
+// ----------------------------------------------------------------------------
+// test class
+// ----------------------------------------------------------------------------
+
+class AffineTransformTestCase : public CppUnit::TestCase
+{
+public:
+ AffineTransformTestCase()
+ {
+ wxImage::AddHandler(new wxJPEGHandler);
+ }
+
+ virtual void setUp();
+
+private:
+ CPPUNIT_TEST_SUITE( AffineTransformTestCase );
+ CPPUNIT_TEST( InvertMatrix );
+ CPPUNIT_TEST( VMirrorAndTranslate );
+ CPPUNIT_TEST( Rotate90Clockwise );
+ CPPUNIT_TEST_SUITE_END();
+
+ void InvertMatrix();
+ void VMirrorAndTranslate();
+ void Rotate90Clockwise();
+
+ wxImage m_imgOrig;
+ wxBitmap m_bmpOrig;
+
+ DECLARE_NO_COPY_CLASS(AffineTransformTestCase)
+};
+
+// register in the unnamed registry so that these tests are run by default
+CPPUNIT_TEST_SUITE_REGISTRATION( AffineTransformTestCase );
+
+// also include in it's own registry so that these tests can be run alone
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( AffineTransformTestCase, "AffineTransformTestCase" );
+
+void AffineTransformTestCase::setUp()
+{
+ m_imgOrig.LoadFile("horse.jpg");
+
+ CPPUNIT_ASSERT( m_imgOrig.IsOk() );
+
+ m_bmpOrig = wxBitmap(m_imgOrig);
+}
+
+void AffineTransformTestCase::InvertMatrix()
+{
+ wxAffineMatrix2D matrix1;
+ matrix1.Set(wxMatrix2D(2, 1, 1, 1), wxPoint2DDouble(1, 1));
+
+ wxAffineMatrix2D matrix2(matrix1);
+
+ matrix2.Invert();
+
+ wxMatrix2D m;
+ wxPoint2DDouble p;
+ matrix2.Get(&m, &p);
+ CPPUNIT_ASSERT_EQUAL( 1, (int)m.m_11 );
+ CPPUNIT_ASSERT_EQUAL( -1, (int)m.m_12 );
+ CPPUNIT_ASSERT_EQUAL( -1, (int)m.m_21 );
+ CPPUNIT_ASSERT_EQUAL( 2, (int)m.m_22 );
+ CPPUNIT_ASSERT_EQUAL( 0, (int)p.m_x );
+ CPPUNIT_ASSERT_EQUAL( -1, (int)p.m_y );
+
+ matrix2.Concat(matrix1);
+ CPPUNIT_ASSERT( matrix2.IsIdentity() );
+}
+
+void AffineTransformTestCase::VMirrorAndTranslate()
+{
+ wxBitmap bmpUsingMatrix(m_bmpOrig.GetWidth(), m_bmpOrig.GetHeight());
+
+ // build the mirrored image using the transformation matrix
+ {
+ wxMemoryDC dc(bmpUsingMatrix);
+
+ if ( !dc.CanUseTransformMatrix() )
+ return;
+
+ wxAffineMatrix2D matrix;
+ matrix.Mirror(wxVERTICAL);
+ matrix.Translate(0, m_bmpOrig.GetHeight() - 1);
+ dc.SetTransformMatrix(matrix);
+ dc.DrawBitmap(m_bmpOrig, 0, 0);
+ }
+
+ wxImage imgUsingMatrix = bmpUsingMatrix.ConvertToImage();
+ wxImage imgOrigVMirrored = m_imgOrig.Mirror(false);
+
+ CPPUNIT_ASSERT_EQUAL( imgUsingMatrix, imgOrigVMirrored );
+}
+
+void AffineTransformTestCase::Rotate90Clockwise()
+{
+ wxBitmap bmpUsingMatrix(m_bmpOrig.GetHeight(), m_bmpOrig.GetWidth());
+
+ // build the rotated image using the transformation matrix
+ {
+ wxMemoryDC dc(bmpUsingMatrix);
+
+ if ( !dc.CanUseTransformMatrix() )
+ return;
+
+ wxAffineMatrix2D matrix;
+ matrix.Rotate(-0.5 * M_PI);
+ matrix.Translate(m_bmpOrig.GetHeight(), 0);
+ dc.SetTransformMatrix(matrix);
+ dc.DrawBitmap(m_bmpOrig, 0, 0);
+ }
+
+ wxImage imgUsingMatrix = bmpUsingMatrix.ConvertToImage();
+ wxImage imgOrigRotate90Clockwise = m_imgOrig.Rotate90(true);
+
+ CPPUNIT_ASSERT_EQUAL( imgUsingMatrix, imgOrigRotate90Clockwise );
+}
projects / wxWidgets.git / commitdiff
