Change rotations to use angle and vector in APIs

Quaternions are pain in the behind to use, especially
in QML, so change them to angle + vector combinations.

Change-Id: I25eb5ea92deaf3a079e2e193cce2e8de89f3c3c4
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

2 files changed, 7 insertions, 22 deletions

diff --git a/tests/directional/main.cpp b/tests/directional/main.cpp
index f4871a70..2b077b97 100644
--- a/tests/directional/main.cpp
+++ b/tests/directional/main.cpp
@@ -32,11 +32,9 @@
 
 int main(int argc, char **argv)
 {
-    //! [0]
     QApplication app(argc, argv);
     Q3DScatter *graph = new Q3DScatter();
     QWidget *container = QWidget::createWindowContainer(graph);
-    //! [0]
 
     QSize screenSize = graph->screen()->size();
     container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.5));
@@ -44,17 +42,14 @@ int main(int argc, char **argv)
     container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     container->setFocusPolicy(Qt::StrongFocus);
 
-    //! [1]
     QWidget *widget = new QWidget;
     QHBoxLayout *hLayout = new QHBoxLayout(widget);
     QVBoxLayout *vLayout = new QVBoxLayout();
     hLayout->addWidget(container, 1);
     hLayout->addLayout(vLayout);
-    //! [1]
 
     widget->setWindowTitle(QStringLiteral("Directional scatter"));
 
-    //! [4]
     QComboBox *themeList = new QComboBox(widget);
     themeList->addItem(QStringLiteral("Qt"));
     themeList->addItem(QStringLiteral("Primary Colors"));
@@ -79,7 +74,7 @@ int main(int argc, char **argv)
     cameraButton->setText(QStringLiteral("Change camera preset"));
 
     QPushButton *toggleRotationButton = new QPushButton(widget);
-    toggleRotationButton->setText(QStringLiteral("Toggle rotation"));
+    toggleRotationButton->setText(QStringLiteral("Toggle animation"));
 
     QCheckBox *backgroundCheckBox = new QCheckBox(widget);
     backgroundCheckBox->setText(QStringLiteral("Show background"));
@@ -101,9 +96,7 @@ int main(int argc, char **argv)
 
     QFontComboBox *fontList = new QFontComboBox(widget);
     fontList->setCurrentFont(QFont("Arial"));
-    //! [4]
 
-    //! [5]
     vLayout->addWidget(labelButton, 0, Qt::AlignTop);
     vLayout->addWidget(cameraButton, 0, Qt::AlignTop);
     vLayout->addWidget(toggleRotationButton, 0, Qt::AlignTop);
@@ -117,13 +110,9 @@ int main(int argc, char **argv)
     vLayout->addWidget(shadowQuality);
     vLayout->addWidget(new QLabel(QStringLiteral("Change font")));
     vLayout->addWidget(fontList, 1, Qt::AlignTop);
-    //! [5]
 
-    //! [2]
     ScatterDataModifier *modifier = new ScatterDataModifier(graph);
-    //! [2]
 
-    //! [6]
     QObject::connect(cameraButton, &QPushButton::clicked, modifier,
                      &ScatterDataModifier::changePresetCamera);
     QObject::connect(toggleRotationButton, &QPushButton::clicked, modifier,
@@ -159,12 +148,9 @@ int main(int argc, char **argv)
 
     QObject::connect(modifier, &ScatterDataModifier::fontChanged, fontList,
                      &QFontComboBox::setCurrentFont);
-    //! [6]
 
     itemStyleList->setCurrentIndex(0);
 
-    //! [3]
     widget->show();
     return app.exec();
-    //! [3]
 }
diff --git a/tests/directional/scatterdatamodifier.cpp b/tests/directional/scatterdatamodifier.cpp
index 96a7b975..3735e14c 100644
--- a/tests/directional/scatterdatamodifier.cpp
+++ b/tests/directional/scatterdatamodifier.cpp
@@ -32,7 +32,7 @@ const int numberOfCols = 8;
 const int numberOfRows = 8;
 const float limit = 8.0f;
 const float PI = 3.14159f;
-//#define HEDGEHOG
+#define HEDGEHOG
 
 ScatterDataModifier::ScatterDataModifier(Q3DScatter *scatter)
     : m_graph(scatter),
@@ -111,7 +111,8 @@ void ScatterDataModifier::addData()
 #endif
 
             ptrToDataArray->setPosition(QVector3D(x, y, z));
-            ptrToDataArray->setRotation(rotation);
+            ptrToDataArray->setRotationAxis(rotation.vector());
+            ptrToDataArray->setRotationAngle(qAcos(rotation.scalar()) * 360.0f / M_PI);
             ptrToDataArray++;
         }
     }
@@ -172,15 +173,13 @@ void ScatterDataModifier::triggerRotation()
     if (m_graph->seriesList().size()) {
         int selectedIndex = m_graph->seriesList().at(0)->selectedItem();
         if (selectedIndex != QScatter3DSeries::invalidSelectionIndex()) {
-            static float itemAngle = 0.0f;
             QScatterDataItem item(*(m_graph->seriesList().at(0)->dataProxy()->itemAt(selectedIndex)));
-            QQuaternion itemRotation = QQuaternion::fromAxisAndAngle(0.0f, 0.0f, 1.0f, itemAngle++);
-            item.setRotation(itemRotation);
+            item.setRotationAngle(item.rotationAngle() + 1);
             m_graph->seriesList().at(0)->dataProxy()->setItem(selectedIndex, item);
         } else {
             static float seriesAngle = 0.0f;
-            QQuaternion rotation = QQuaternion::fromAxisAndAngle(1.0f, 1.0f, 1.0f, seriesAngle++);
-            m_graph->seriesList().at(0)->setMeshRotation(rotation);
+            m_graph->seriesList().at(0)->setMeshRotationAxis(QVector3D(1.0f, 1.0f, 1.0f));
+            m_graph->seriesList().at(0)->setMeshRotationAngle(seriesAngle++);
         }
     }
 }