void TransformTest::testEstimateNonIsometric()
{
// Scaling and translation
PassPointList passpoints;
passpoints.resize(3);
passpoints[0].src_coords = MapCoordF { 128.0, 0.0 };
passpoints[0].dest_coords = MapCoordF { 64.0, 64.0 };
passpoints[1].src_coords = MapCoordF { 256.0, 0.0 };
passpoints[1].dest_coords = MapCoordF { 96.0, 64.0 };
passpoints[2].src_coords = MapCoordF { 128.0, 128.0 };
passpoints[2].dest_coords = MapCoordF { 64.0, 96.0 };
QTransform qt;
QVERIFY(passpoints.estimateNonIsometricSimilarityTransform(&qt));
QVERIFY(qt.isTranslating());
QVERIFY(qt.isScaling());
QCOMPARE(int(qt.type()), int(QTransform::TxScale));
QCOMPARE(qt.map(passpoints[0].src_coords), QPointF{passpoints[0].dest_coords});
QCOMPARE(qt.map(passpoints[1].src_coords), QPointF{passpoints[1].dest_coords});
QCOMPARE(qt.map(passpoints[2].src_coords), QPointF{passpoints[2].dest_coords});
auto t = TemplateTransform::fromQTransform(qt);
QCOMPARE(t.template_x, MapCoord(32,64).nativeX());
QCOMPARE(t.template_y, MapCoord(32,64).nativeY());
QCOMPARE(t.template_scale_x, 0.25);
QCOMPARE(t.template_scale_y, 0.25);
QVERIFY(qAbs(t.template_rotation) < 0.000001);
// Rotation
passpoints[0].src_coords = MapCoordF { 0.0, 0.0 };
passpoints[0].dest_coords = MapCoordF { 0.0, 0.0 };
passpoints[1].src_coords = MapCoordF { 5.0, 0.0 };
passpoints[1].dest_coords = MapCoordF { 4.0, -3.0 };
passpoints[2].src_coords = MapCoordF { 0.0, 5.0 };
passpoints[2].dest_coords = MapCoordF { 3.0, 4.0 };
QVERIFY(passpoints.estimateNonIsometricSimilarityTransform(&qt));
QVERIFY(qt.isRotating());
QCOMPARE(int(qt.type()), int(QTransform::TxRotate));
QCOMPARE(qt.map(passpoints[0].src_coords), QPointF{passpoints[0].dest_coords});
QCOMPARE(qt.map(passpoints[1].src_coords), QPointF{passpoints[1].dest_coords});
QCOMPARE(qt.map(passpoints[2].src_coords), QPointF{passpoints[2].dest_coords});
t = TemplateTransform::fromQTransform(qt);
QCOMPARE(t.template_x, 0);
QCOMPARE(t.template_y, 0);
QCOMPARE(t.template_scale_x, 1.0);
QCOMPARE(t.template_scale_y, 1.0);
QCOMPARE(t.template_rotation, qAcos(passpoints[1].dest_coords.x() / passpoints[1].src_coords.x()));
}
void TransformTest::testTransformTranslate()
{
MapCoord offset { 100.0, 100.0 };
QTransform qt;
qt.translate(offset.x(), offset.y());
QVERIFY(qt.isTranslating());
QCOMPARE(int(qt.type()), int(QTransform::TxTranslate));
auto t = TemplateTransform::fromQTransform(qt);
QCOMPARE(t.template_x, offset.nativeX());
QCOMPARE(t.template_y, offset.nativeY());
QCOMPARE(t.template_scale_x, 1.0);
QCOMPARE(t.template_scale_y, 1.0);
QCOMPARE(t.template_rotation, 0.0);
}
void TransformTest::testTransformIdentity()
{
// Default QTransform: identity
QTransform qt;
QVERIFY(qt.isIdentity());
QCOMPARE(int(qt.type()), int(QTransform::TxNone));
// Default TemplateTransform: identity
TemplateTransform t;
// TemplateTransform list initialization, and assignment
t = { 12, -3, 0.1, 2.0, 3.0 };
QCOMPARE(t.template_x, 12);
QCOMPARE(t.template_y, -3);
QCOMPARE(t.template_scale_x, 2.0);
QCOMPARE(t.template_scale_y, 3.0);
QCOMPARE(t.template_rotation, 0.1);
// Now transfer the identity QTransform to the TemplateTransform
t = TemplateTransform::fromQTransform(qt);
QCOMPARE(t.template_x, 0);
QCOMPARE(t.template_y, 0);
QCOMPARE(t.template_scale_x, 1.0);
QCOMPARE(t.template_scale_y, 1.0);
QCOMPARE(t.template_rotation, 0.0);
// Put something different in the QTransform
qt.translate(4, 8);
qt.rotate(1);
qt.scale(2.0, 1.5);
QVERIFY(qt.isAffine());
QVERIFY(!qt.isIdentity());
QVERIFY(qt.isTranslating());
QVERIFY(qt.isRotating());
QVERIFY(qt.isScaling());
}