Change qreals to floats

+ Fix default axes to sensible
+ Fix some rounding errors in surface creation

Task-number: QTRD-2622
Change-Id: I44450efc1e77ac8d8dbefc75814345949b8fb1f1
Reviewed-by: Mika Salmela <mika.salmela@digia.com>

10 files changed, 76 insertions, 74 deletions

diff --git a/examples/audiolevels/audiolevels.cpp b/examples/audiolevels/audiolevels.cpp
index 0fc6d3c5..13a9c8c5 100644
--- a/examples/audiolevels/audiolevels.cpp
+++ b/examples/audiolevels/audiolevels.cpp
@@ -38,16 +38,16 @@ AudioLevels::AudioLevels(Q3DBars *graph, QObject *parent)
       m_audioInput(0)
 {
     // Set up the graph
-    m_graph->setBarThickness(0.5);
+    m_graph->setBarThickness(0.5f);
     m_graph->setBarSpacing(QSizeF(0.0, 1.0));
     m_graph->setGridVisible(true);
     m_graph->setBackgroundVisible(false);
-    m_graph->valueAxis()->setRange(-100.0, 100.0);
+    m_graph->valueAxis()->setRange(-100.0f, 100.0f);
     m_graph->valueAxis()->setSegmentCount(20);
     m_graph->valueAxis()->setLabelFormat(QStringLiteral("%d%%"));
     m_graph->setShadowQuality(QDataVis::ShadowQualityNone);
     m_graph->setSelectionMode(QDataVis::SelectionNone);
-    m_graph->scene()->activeCamera()->setCameraPosition(-25.0, 10.0, 190.0);
+    m_graph->scene()->activeCamera()->setCameraPosition(-25.0f, 10.0f, 190.0f);
     m_graph->setTheme(new Q3DTheme(QDataVis::ThemeIsabelle));
     m_graph->setBarType(QDataVis::MeshStyleBars);
     m_graph->addSeries(new QBar3DSeries);
diff --git a/examples/audiolevels/audiolevelsiodevice.cpp b/examples/audiolevels/audiolevelsiodevice.cpp
index 9fedd804..970677c6 100644
--- a/examples/audiolevels/audiolevelsiodevice.cpp
+++ b/examples/audiolevels/audiolevelsiodevice.cpp
@@ -75,11 +75,11 @@ qint64 AudioLevelsIODevice::writeData(const char *data, qint64 maxSize)
     for (int i = newDataSize - 1; i >= newDataStartIndex; i--) {
         // Add 0.01 to the value to avoid gaps in the graph (i.e. zero height bars).
         // Also, scale to 0...100
-        qreal value = qreal(quint8(data[resolution * i]) - 128) / 1.28 + 0.01;
+        float value = float(quint8(data[resolution * i]) - 128) / 1.28f + 0.01f;
         (*m_array->at(middleRow))[index].setValue(value);
         // Insert a fractional value into front half of the rows.
         for (int j = 1; j <= middleRow; j++) {
-            qreal fractionalValue = value / qreal(j + 1);
+            float fractionalValue = value / float(j + 1);
             (*m_array->at(middleRow - j))[index].setValue(fractionalValue);
         }
         index++;
diff --git a/examples/bars/graphmodifier.cpp b/examples/bars/graphmodifier.cpp
index f38d88e9..8d9c9e88 100644
--- a/examples/bars/graphmodifier.cpp
+++ b/examples/bars/graphmodifier.cpp
@@ -34,13 +34,13 @@ const QString celsiusString = QString(QChar(0xB0)) + "C";
 //! [0]
 GraphModifier::GraphModifier(Q3DBars *bargraph)
     : m_graph(bargraph),
-      m_xRotation(0.0),
-      m_yRotation(0.0),
+      m_xRotation(0.0f),
+      m_yRotation(0.0f),
       m_fontSize(30),
       m_segments(4),
       m_subSegments(3),
-      m_minval(-20.0),
-      m_maxval(20.0),
+      m_minval(-20.0f),
+      m_maxval(20.0f),
       //! [1]
       m_temperatureAxis(new Q3DValueAxis),
       m_yearAxis(new Q3DCategoryAxis),
@@ -110,24 +110,24 @@ void GraphModifier::resetTemperatureData()
 {
     //! [5]
     // Set up data
-    static const qreal tempOulu[7][12] = {
-        {-6.7, -11.7, -9.7, 3.3, 9.2, 14.0, 16.3, 17.8, 10.2, 2.1, -2.6, -0.3},    // 2006
-        {-6.8, -13.3, 0.2, 1.5, 7.9, 13.4, 16.1, 15.5, 8.2, 5.4, -2.6, -0.8},      // 2007
-        {-4.2, -4.0, -4.6, 1.9, 7.3, 12.5, 15.0, 12.8, 7.6, 5.1, -0.9, -1.3},      // 2008
-        {-7.8, -8.8, -4.2, 0.7, 9.3, 13.2, 15.8, 15.5, 11.2, 0.6, 0.7, -8.4},      // 2009
-        {-14.4, -12.1, -7.0, 2.3, 11.0, 12.6, 18.8, 13.8, 9.4, 3.9, -5.6, -13.0},  // 2010
-        {-9.0, -15.2, -3.8, 2.6, 8.3, 15.9, 18.6, 14.9, 11.1, 5.3, 1.8, -0.2},     // 2011
-        {-8.7, -11.3, -2.3, 0.4, 7.5, 12.2, 16.4, 14.1, 9.2, 3.1, 0.3, -12.1}      // 2012
+    static const float tempOulu[7][12] = {
+        {-6.7f, -11.7f, -9.7f, 3.3f, 9.2f, 14.0f, 16.3f, 17.8f, 10.2f, 2.1f, -2.6f, -0.3f},    // 2006
+        {-6.8f, -13.3f, 0.2f, 1.5f, 7.9f, 13.4f, 16.1f, 15.5f, 8.2f, 5.4f, -2.6f, -0.8f},      // 2007
+        {-4.2f, -4.0f, -4.6f, 1.9f, 7.3f, 12.5f, 15.0f, 12.8f, 7.6f, 5.1f, -0.9f, -1.3f},      // 2008
+        {-7.8f, -8.8f, -4.2f, 0.7f, 9.3f, 13.2f, 15.8f, 15.5f, 11.2f, 0.6f, 0.7f, -8.4f},      // 2009
+        {-14.4f, -12.1f, -7.0f, 2.3f, 11.0f, 12.6f, 18.8f, 13.8f, 9.4f, 3.9f, -5.6f, -13.0f},  // 2010
+        {-9.0f, -15.2f, -3.8f, 2.6f, 8.3f, 15.9f, 18.6f, 14.9f, 11.1f, 5.3f, 1.8f, -0.2f},     // 2011
+        {-8.7f, -11.3f, -2.3f, 0.4f, 7.5f, 12.2f, 16.4f, 14.1f, 9.2f, 3.1f, 0.3f, -12.1f}      // 2012
     };
 
-    static const qreal tempHelsinki[7][12] = {
-        {-3.7, -7.8, -5.4, 3.4, 10.7, 15.4, 18.6, 18.7, 14.3, 8.5, 2.9, 4.1},      // 2006
-        {-1.2, -7.5, 3.1, 5.5, 10.3, 15.9, 17.4, 17.9, 11.2, 7.3, 1.1, 0.5},       // 2007
-        {-0.6, 1.2, 0.2, 6.3, 10.2, 13.8, 18.1, 15.1, 10.1, 9.4, 2.5, 0.4},        // 2008
-        {-2.9, -3.5, -0.9, 4.7, 10.9, 14.0, 17.4, 16.8, 13.2, 4.1, 2.6, -2.3},     // 2009
-        {-10.2, -8.0, -1.9, 6.6, 11.3, 14.5, 21.0, 18.8, 12.6, 6.1, -0.5, -7.3},   // 2010
-        {-4.4, -9.1, -2.0, 5.5, 9.9, 15.6, 20.8, 17.8, 13.4, 8.9, 3.6, 1.5},       // 2011
-        {-3.5, -3.2, -0.7, 4.0, 11.1, 13.4, 17.3, 15.8, 13.1, 6.4, 4.1, -5.1}      // 2012
+    static const float tempHelsinki[7][12] = {
+        {-3.7f, -7.8f, -5.4f, 3.4f, 10.7f, 15.4f, 18.6f, 18.7f, 14.3f, 8.5f, 2.9f, 4.1f},      // 2006
+        {-1.2f, -7.5f, 3.1f, 5.5f, 10.3f, 15.9f, 17.4f, 17.9f, 11.2f, 7.3f, 1.1f, 0.5f},       // 2007
+        {-0.6f, 1.2f, 0.2f, 6.3f, 10.2f, 13.8f, 18.1f, 15.1f, 10.1f, 9.4f, 2.5f, 0.4f},        // 2008
+        {-2.9f, -3.5f, -0.9f, 4.7f, 10.9f, 14.0f, 17.4f, 16.8f, 13.2f, 4.1f, 2.6f, -2.3f},     // 2009
+        {-10.2f, -8.0f, -1.9f, 6.6f, 11.3f, 14.5f, 21.0f, 18.8f, 12.6f, 6.1f, -0.5f, -7.3f},   // 2010
+        {-4.4f, -9.1f, -2.0f, 5.5f, 9.9f, 15.6f, 20.8f, 17.8f, 13.4f, 8.9f, 3.6f, 1.5f},       // 2011
+        {-3.5f, -3.2f, -0.7f, 4.0f, 11.1f, 13.4f, 17.3f, 15.8f, 13.1f, 6.4f, 4.1f, -5.1f}      // 2012
     };
 
     // Create data arrays
@@ -260,10 +260,10 @@ void GraphModifier::setSeriesVisibility(int enabled)
 {
     m_graph->seriesList().at(1)->setVisible(bool(enabled));
     if (enabled) {
-        m_graph->setBarThickness(2.0);
+        m_graph->setBarThickness(2.0f);
         m_graph->setBarSpacing(QSizeF(1.0, 3.0));
     } else {
-        m_graph->setBarThickness(1.0);
+        m_graph->setBarThickness(1.0f);
         m_graph->setBarSpacing(QSizeF(1.0, 1.0));
     }
 }
diff --git a/examples/bars/graphmodifier.h b/examples/bars/graphmodifier.h
index 978558e2..2e84790c 100644
--- a/examples/bars/graphmodifier.h
+++ b/examples/bars/graphmodifier.h
@@ -61,13 +61,13 @@ signals:
 
 private:
     Q3DBars *m_graph;
-    qreal m_xRotation;
-    qreal m_yRotation;
+    float m_xRotation;
+    float m_yRotation;
     int m_fontSize;
     int m_segments;
     int m_subSegments;
-    qreal m_minval;
-    qreal m_maxval;
+    float m_minval;
+    float m_maxval;
     QStringList m_months;
     QStringList m_years;
     Q3DValueAxis *m_temperatureAxis;
diff --git a/examples/customproxy/rainfallgraph.cpp b/examples/customproxy/rainfallgraph.cpp
index a31200e8..71463103 100644
--- a/examples/customproxy/rainfallgraph.cpp
+++ b/examples/customproxy/rainfallgraph.cpp
@@ -48,7 +48,7 @@ RainfallGraph::RainfallGraph(Q3DBars *rainfall)
 
     // Set up bar specifications; make the bars as wide as they are deep,
     // and add a small space between the bars
-    m_graph->setBarThickness(1.0);
+    m_graph->setBarThickness(1.0f);
     m_graph->setBarSpacing(QSizeF(0.2, 0.2));
 
     // Set axis labels and titles
diff --git a/examples/customproxy/variantbardataproxy.cpp b/examples/customproxy/variantbardataproxy.cpp
index 887115b8..2997810f 100644
--- a/examples/customproxy/variantbardataproxy.cpp
+++ b/examples/customproxy/variantbardataproxy.cpp
@@ -118,7 +118,7 @@ void VariantBarDataProxy::resolveDataSet()
     const QStringList &columnList = m_mapping->columnCategories();
 
     // Sort values into rows and columns
-    typedef QHash<QString, qreal> ColumnValueMap;
+    typedef QHash<QString, float> ColumnValueMap;
     QHash <QString, ColumnValueMap> itemValueMap;
     foreach (const VariantDataItem *item, itemList) {
         itemValueMap[item->at(rowIndex).toString()][item->at(columnIndex).toString()]
diff --git a/examples/itemmodel/main.cpp b/examples/itemmodel/main.cpp
index 0c9ee0cb..789ff0ff 100644
--- a/examples/itemmodel/main.cpp
+++ b/examples/itemmodel/main.cpp
@@ -78,7 +78,7 @@ GraphDataGenerator::GraphDataGenerator(Q3DBars *bargraph, QTableWidget *tableWid
     //! [5]
     // Set up bar specifications; make the bars as wide as they are deep,
     // and add a small space between them
-    m_graph->setBarThickness(1.0);
+    m_graph->setBarThickness(1.0f);
     m_graph->setBarSpacing(QSizeF(0.2, 0.2));
 
     // Set bar type to flat pyramids
@@ -161,11 +161,11 @@ void GraphDataGenerator::setupModel()
     weeks << "week 1" << "week 2" << "week 3" << "week 4" << "week 5";
 
     // Set up data         Mon  Tue  Wed  Thu  Fri  Sat  Sun
-    qreal hours[5][7] = {{2.0, 1.0, 3.0, 0.2, 1.0, 5.0, 10.0},     // week 1
-                         {0.5, 1.0, 3.0, 1.0, 2.0, 2.0, 3.0},      // week 2
-                         {1.0, 1.0, 2.0, 1.0, 4.0, 4.0, 4.0},      // week 3
-                         {0.0, 1.0, 0.0, 0.0, 2.0, 2.0, 0.3},      // week 4
-                         {3.0, 3.0, 6.0, 2.0, 2.0, 1.0, 1.0}};     // week 5
+    float hours[5][7] = {{2.0f, 1.0f, 3.0f, 0.2f, 1.0f, 5.0f, 10.0f},     // week 1
+                         {0.5f, 1.0f, 3.0f, 1.0f, 2.0f, 2.0f, 3.0f},      // week 2
+                         {1.0f, 1.0f, 2.0f, 1.0f, 4.0f, 4.0f, 4.0f},      // week 3
+                         {0.0f, 1.0f, 0.0f, 0.0f, 2.0f, 2.0f, 0.3f},      // week 4
+                         {3.0f, 3.0f, 6.0f, 2.0f, 2.0f, 1.0f, 1.0f}};     // week 5
     //! [9]
 
     // Add labels
@@ -205,7 +205,7 @@ void GraphDataGenerator::addRow()
     for (int i = 0; i < m_columnCount; i++) {
         QModelIndex index = m_tableWidget->model()->index(0, i);
         m_tableWidget->model()->setData(index,
-            ((qreal)i / (qreal)m_columnCount) / 2.0 + (qreal)(rand() % 30) / 100.0);
+            ((float)i / (float)m_columnCount) / 2.0f + (float)(rand() % 30) / 100.0f);
     }
     m_tableWidget->resizeColumnsToContents();
 }
diff --git a/examples/scatter/scatterdatamodifier.cpp b/examples/scatter/scatterdatamodifier.cpp
index f92ffd0f..ce4eaa03 100644
--- a/examples/scatter/scatterdatamodifier.cpp
+++ b/examples/scatter/scatterdatamodifier.cpp
@@ -81,9 +81,9 @@ void ScatterDataModifier::addData()
     m_graph->axisX()->setTitle("X");
     m_graph->axisY()->setTitle("Y");
     m_graph->axisZ()->setTitle("Z");
-    m_graph->axisX()->setRange(-30.0, 30.0);
-    m_graph->axisY()->setRange(-1.0, 1.0);
-    m_graph->axisZ()->setRange(-30.0, 30.0);
+    m_graph->axisX()->setRange(-30.0f, 30.0f);
+    m_graph->axisY()->setRange(-1.0f, 1.0f);
+    m_graph->axisZ()->setRange(-30.0f, 30.0f);
     //! [4]
 
     //! [5]
@@ -102,7 +102,7 @@ void ScatterDataModifier::addData()
     float limit = qSqrt(numberOfItems) / 2.0f;
     for (float i = -limit; i < limit; i++) {
         for (float j = -limit; j < limit; j++) {
-            ptrToDataArray->setPosition(QVector3D(i, qCos(qDegreesToRadians((i * j) / 3.0)), j));
+            ptrToDataArray->setPosition(QVector3D(i, qCos(qDegreesToRadians((i * j) / 3.0f)), j));
             ptrToDataArray++;
         }
     }
diff --git a/examples/surface/surfacegraph.cpp b/examples/surface/surfacegraph.cpp
index f774c537..d7def123 100644
--- a/examples/surface/surfacegraph.cpp
+++ b/examples/surface/surfacegraph.cpp
@@ -50,7 +50,7 @@ SurfaceGraph::SurfaceGraph(Q3DSurface *surface)
     QImage heightMapImage(":/maps/mountain");
     m_heightMapProxy = new QHeightMapSurfaceDataProxy(heightMapImage);
     m_heightMapSeries = new QSurface3DSeries(m_heightMapProxy);
-    m_heightMapProxy->setValueRanges(34.0, 40.0, 18.0, 24.0);
+    m_heightMapProxy->setValueRanges(34.0f, 40.0f, 18.0f, 24.0f);
     //! [2]
     m_heightMapWidth = heightMapImage.width();
     m_heightMapHeight = heightMapImage.height();
@@ -71,12 +71,14 @@ void SurfaceGraph::fillSqrtSinProxy()
     dataArray->reserve(sampleCountZ);
     for (int i = 0 ; i < sampleCountZ ; i++) {
         QSurfaceDataRow *newRow = new QSurfaceDataRow(sampleCountX);
-        float z = i * stepZ + sampleMin;
+        // Keep values within range bounds, since just adding step can cause minor drift due
+        // to the rounding errors.
+        float z = qMin(sampleMax, (i * stepZ + sampleMin));
         int index = 0;
         for (int j = 0; j < sampleCountX; j++) {
-            float x = j * stepX + sampleMin;
-            float R = qSqrt(z * z + x * x) + 0.01;
-            float y = (qSin(R) / R + 0.24) * 1.61;
+            float x = qMin(sampleMax, (j * stepX + sampleMin));
+            float R = qSqrt(z * z + x * x) + 0.01f;
+            float y = (qSin(R) / R + 0.24f) * 1.61f;
             (*newRow)[index++].setPosition(QVector3D(x, y, z));
         }
         *dataArray << newRow;
@@ -96,7 +98,7 @@ void SurfaceGraph::enableSqrtSinModel(bool enable)
         m_graph->axisX()->setLabelFormat("%.2f");
         m_graph->axisZ()->setLabelFormat("%.2f");
         m_graph->axisX()->setRange(sampleMin, sampleMax);
-        m_graph->axisY()->setRange(0.0, 2.0);
+        m_graph->axisY()->setRange(0.0f, 2.0f);
         m_graph->axisZ()->setRange(sampleMin, sampleMax);
 
         m_graph->removeSeries(m_heightMapSeries);
@@ -106,8 +108,8 @@ void SurfaceGraph::enableSqrtSinModel(bool enable)
         // Reset range sliders for Sqrt&Sin
         m_rangeMinX = sampleMin;
         m_rangeMinZ = sampleMin;
-        m_stepX = (sampleMax - sampleMin) / qreal(sampleCountX - 1);
-        m_stepZ = (sampleMax - sampleMin) / qreal(sampleCountZ - 1);
+        m_stepX = (sampleMax - sampleMin) / float(sampleCountX - 1);
+        m_stepZ = (sampleMax - sampleMin) / float(sampleCountZ - 1);
         m_axisMinSliderX->setMaximum(sampleCountX - 2);
         m_axisMinSliderX->setValue(0);
         m_axisMaxSliderX->setMaximum(sampleCountX - 1);
@@ -128,9 +130,9 @@ void SurfaceGraph::enableHeightMapModel(bool enable)
 
         m_graph->axisX()->setLabelFormat("%.1f N");
         m_graph->axisZ()->setLabelFormat("%.1f E");
-        m_graph->axisX()->setRange(34.0, 40.0);
+        m_graph->axisX()->setRange(34.0f, 40.0f);
         m_graph->axisY()->setAutoAdjustRange(true);
-        m_graph->axisZ()->setRange(18.0, 24.0);
+        m_graph->axisZ()->setRange(18.0f, 24.0f);
 
         m_graph->removeSeries(m_sqrtSinSeries);
         m_graph->addSeries(m_heightMapSeries);
@@ -139,10 +141,10 @@ void SurfaceGraph::enableHeightMapModel(bool enable)
         // Reset range sliders for height map
         int mapGridCountX = m_heightMapWidth / heightMapGridStepX;
         int mapGridCountZ = m_heightMapHeight / heightMapGridStepZ;
-        m_rangeMinX = 34.0;
-        m_rangeMinZ = 18.0;
-        m_stepX = 6.0 / qreal(mapGridCountX - 1);
-        m_stepZ = 6.0 / qreal(mapGridCountZ - 1);
+        m_rangeMinX = 34.0f;
+        m_rangeMinZ = 18.0f;
+        m_stepX = 6.0f / float(mapGridCountX - 1);
+        m_stepZ = 6.0f / float(mapGridCountZ - 1);
         m_axisMinSliderX->setMaximum(mapGridCountX - 2);
         m_axisMinSliderX->setValue(0);
         m_axisMaxSliderX->setMaximum(mapGridCountX - 1);
@@ -156,67 +158,67 @@ void SurfaceGraph::enableHeightMapModel(bool enable)
 
 void SurfaceGraph::adjustXMin(int min)
 {
-    qreal minX = m_stepX * qreal(min) + m_rangeMinX;
+    float minX = m_stepX * float(min) + m_rangeMinX;
 
     int max = m_axisMaxSliderX->value();
     if (min >= max) {
         max = min + 1;
         m_axisMaxSliderX->setValue(max);
     }
-    qreal maxX = m_stepX * max + m_rangeMinX;
+    float maxX = m_stepX * max + m_rangeMinX;
 
     setAxisXRange(minX, maxX);
 }
 
 void SurfaceGraph::adjustXMax(int max)
 {
-    qreal maxX = m_stepX * qreal(max) + m_rangeMinX;
+    float maxX = m_stepX * float(max) + m_rangeMinX;
 
     int min = m_axisMinSliderX->value();
     if (max <= min) {
         min = max - 1;
         m_axisMinSliderX->setValue(min);
     }
-    qreal minX = m_stepX * min + m_rangeMinX;
+    float minX = m_stepX * min + m_rangeMinX;
 
     setAxisXRange(minX, maxX);
 }
 
 void SurfaceGraph::adjustZMin(int min)
 {
-    qreal minZ = m_stepZ * qreal(min) + m_rangeMinZ;
+    float minZ = m_stepZ * float(min) + m_rangeMinZ;
 
     int max = m_axisMaxSliderZ->value();
     if (min >= max) {
         max = min + 1;
         m_axisMaxSliderZ->setValue(max);
     }
-    qreal maxZ = m_stepZ * max + m_rangeMinZ;
+    float maxZ = m_stepZ * max + m_rangeMinZ;
 
     setAxisZRange(minZ, maxZ);
 }
 
 void SurfaceGraph::adjustZMax(int max)
 {
-    qreal maxX = m_stepZ * qreal(max) + m_rangeMinZ;
+    float maxX = m_stepZ * float(max) + m_rangeMinZ;
 
     int min = m_axisMinSliderZ->value();
     if (max <= min) {
         min = max - 1;
         m_axisMinSliderZ->setValue(min);
     }
-    qreal minX = m_stepZ * min + m_rangeMinZ;
+    float minX = m_stepZ * min + m_rangeMinZ;
 
     setAxisZRange(minX, maxX);
 }
 
 //! [5]
-void SurfaceGraph::setAxisXRange(qreal min, qreal max)
+void SurfaceGraph::setAxisXRange(float min, float max)
 {
     m_graph->axisX()->setRange(min, max);
 }
 
-void SurfaceGraph::setAxisZRange(qreal min, qreal max)
+void SurfaceGraph::setAxisZRange(float min, float max)
 {
     m_graph->axisZ()->setRange(min, max);
 }
diff --git a/examples/surface/surfacegraph.h b/examples/surface/surfacegraph.h
index 92b06e54..ecdec672 100644
--- a/examples/surface/surfacegraph.h
+++ b/examples/surface/surfacegraph.h
@@ -73,15 +73,15 @@ private:
     QSlider *m_axisMaxSliderX;
     QSlider *m_axisMinSliderZ;
     QSlider *m_axisMaxSliderZ;
-    qreal m_rangeMinX;
-    qreal m_rangeMinZ;
-    qreal m_stepX;
-    qreal m_stepZ;
+    float m_rangeMinX;
+    float m_rangeMinZ;
+    float m_stepX;
+    float m_stepZ;
     int m_heightMapWidth;
     int m_heightMapHeight;
 
-    void setAxisXRange(qreal min, qreal max);
-    void setAxisZRange(qreal min, qreal max);
+    void setAxisXRange(float min, float max);
+    void setAxisZRange(float min, float max);
     void fillSqrtSinProxy();
 };