Bar data item and row changing optimizations

No longer reset the entire render item array if single item or
row changes, significantly speeding up these operations.

Task-number: QTRD-2190
Change-Id: I44b8abd384003e252e4bfc34af5d73ac1dee34bf
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>
Reviewed-by: Mika Salmela <mika.salmela@digia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/datavisualization/engine/bars3drenderer_p.h b/src/datavisualization/engine/bars3drenderer_p.h
index ca0e690e..ddea546e 100644
--- a/src/datavisualization/engine/bars3drenderer_p.h
+++ b/src/datavisualization/engine/bars3drenderer_p.h
@@ -108,6 +108,7 @@ private:
     bool m_keepSeriesUniform;
     bool m_haveUniformColorSeries;
     bool m_haveGradientSeries;
+    float m_zeroPosition;
 
 public:
     explicit Bars3DRenderer(Bars3DController *controller);
@@ -116,6 +117,8 @@ public:
     void updateData();
     void updateSeries(const QList<QAbstract3DSeries *> &seriesList);
     SeriesRenderCache *createNewCache(QAbstract3DSeries *series);
+    void updateRows(const QVector<Bars3DController::ChangeRow> &rows);
+    void updateItems(const QVector<Bars3DController::ChangeItem> &points);
     void updateScene(Q3DScene *scene);
     void render(GLuint defaultFboHandle = 0);
 
@@ -169,6 +172,9 @@ private:
     QPoint selectionColorToArrayPosition(const QVector4D &selectionColor);
     QBar3DSeries *selectionColorToSeries(const QVector4D &selectionColor);
 
+    inline void updateRenderRow(const QBarDataRow *dataRow, BarRenderItemRow &renderRow);
+    inline void updateRenderItem(const QBarDataItem &dataItem, BarRenderItem &renderItem);
+
     Q_DISABLE_COPY(Bars3DRenderer)
 
     friend class BarRenderItem;