Textured surface example

Documentation once the feature set is final and code looking good. Size
of image files adjusted when example area is locked.

Change-Id: I7ff249ec3452d412a64ce029b33f7607965ffb3a
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/examples/datavisualization/texturesurface/highlightseries.cpp b/examples/datavisualization/texturesurface/highlightseries.cpp
new file mode 100644
index 00000000..3584d1d4
--- /dev/null
+++ b/examples/datavisualization/texturesurface/highlightseries.cpp
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVisualization module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+#include "highlightseries.h"
+
+#include <QDebug>
+
+using namespace QtDataVisualization;
+
+HighlightSeries::HighlightSeries()
+    : m_width(100),
+      m_height(100)
+{
+    setDrawMode(QSurface3DSeries::DrawSurface);
+    setFlatShadingEnabled(true);
+    setVisible(false);
+}
+
+HighlightSeries::~HighlightSeries()
+{
+}
+
+void HighlightSeries::setTopographicSeries(TopographicSeries *series)
+{
+    m_topographicSeries = series;
+    m_srcWidth = m_topographicSeries->dataProxy()->array()->at(0)->size();
+    m_srcHeight = m_topographicSeries->dataProxy()->array()->size();
+
+    QObject::connect(m_topographicSeries, &QSurface3DSeries::selectedPointChanged,
+                     this, &HighlightSeries::handlePositionChange);
+}
+
+void HighlightSeries::handlePositionChange(const QPoint &position)
+{
+    m_position = position;
+
+    if (position == invalidSelectionPosition()) {
+        setVisible(false);
+
+        return;
+    }
+
+    int halfWidth = m_width / 2;
+    int halfHeight = m_height / 2;
+
+    int startX = position.y() - halfWidth;
+    if (startX < 0 )
+        startX = 0;
+    int endX = position.y() + halfWidth;
+    if (endX > (m_srcWidth - 1))
+        endX = m_srcWidth - 1;
+    int startZ = position.x() - halfHeight;
+    if (startZ < 0 )
+        startZ = 0;
+    int endZ = position.x() + halfHeight;
+    if (endZ > (m_srcHeight - 1))
+        endZ = m_srcHeight - 1;
+
+    QSurfaceDataProxy *srcProxy = m_topographicSeries->dataProxy();
+    const QSurfaceDataArray &srcArray = *srcProxy->array();
+
+    QSurfaceDataArray *dataArray = new QSurfaceDataArray;
+    dataArray->reserve(endZ - startZ);
+    for (int i = startZ; i < endZ; i++) {
+        QSurfaceDataRow *newRow = new QSurfaceDataRow(endX - startX);
+        QSurfaceDataRow *srcRow = srcArray.at(i);
+        for (int j = startX, p = 0; j < endX; j++, p++) {
+            QVector3D pos = srcRow->at(j).position();
+            (*newRow)[p].setPosition(QVector3D(pos.x(), pos.y() + 0.1f, pos.z()));
+        }
+        *dataArray << newRow;
+    }
+
+    dataProxy()->resetArray(dataArray);
+    setVisible(true);
+}