Apply z scale/offset when calculating attribute range in renderer wid…

…gets

src/app/3d/qgspointcloud3dsymbolwidget.cpp

@@ -25,6 +25,7 @@
 #include "qgspointcloudclassifiedrenderer.h"
 #include "qgsdoublevalidator.h"
 #include "qgspointcloudclassifiedrendererwidget.h"
+#include "qgspointcloudlayerelevationproperties.h"
 
 QgsPointCloud3DSymbolWidget::QgsPointCloud3DSymbolWidget( QgsPointCloudLayer *layer, QgsPointCloud3DSymbol *symbol, QWidget *parent )
   : QWidget( parent )
@@ -463,6 +464,11 @@ void QgsPointCloud3DSymbolWidget::rampAttributeChanged()
       mProviderMin = std::numeric_limits< double >::quiet_NaN();
       mProviderMax = std::numeric_limits< double >::quiet_NaN();
     }
+
+    const double zScale = static_cast< const QgsPointCloudLayerElevationProperties * >( mLayer->elevationProperties() )->zScale();
+    const double zOffset = static_cast< const QgsPointCloudLayerElevationProperties * >( mLayer->elevationProperties() )->zOffset();
+    mProviderMin = mProviderMin * zScale + zOffset;
+    mProviderMax = mProviderMax * zScale + zOffset;
   }
   mScalarRecalculateMinMaxButton->setEnabled( !std::isnan( mProviderMin ) && !std::isnan( mProviderMax ) );
   emitChangedSignal();

src/gui/pointcloud/qgspointcloudattributebyramprendererwidget.cpp

@@ -21,6 +21,7 @@
 #include "qgspointcloudattributebyramprenderer.h"
 #include "qgsdoublevalidator.h"
 #include "qgsstyle.h"
+#include "qgspointcloudlayerelevationproperties.h"
 
 ///@cond PRIVATE
 
@@ -103,6 +104,15 @@ void QgsPointCloudAttributeByRampRendererWidget::attributeChanged()
       mProviderMin = std::numeric_limits< double >::quiet_NaN();
       mProviderMax = std::numeric_limits< double >::quiet_NaN();
     }
+
+    if ( mAttributeComboBox->currentAttribute().compare( QLatin1String( "z" ), Qt::CaseInsensitive ) == 0 )
+    {
+      const double zScale = static_cast< const QgsPointCloudLayerElevationProperties * >( mLayer->elevationProperties() )->zScale();
+      const double zOffset = static_cast< const QgsPointCloudLayerElevationProperties * >( mLayer->elevationProperties() )->zOffset();
+      mProviderMin = mProviderMin * zScale + zOffset;
+      mProviderMax = mProviderMax * zScale + zOffset;
+    }
+
   }
   mScalarRecalculateMinMaxButton->setEnabled( !std::isnan( mProviderMin ) && !std::isnan( mProviderMax ) );
   emitWidgetChanged();

src/ui/3d/qgspointcloud3dsymbolwidget.ui

@@ -167,7 +167,7 @@
        <item row="2" column="0" colspan="2">
         <widget class="QgsColorRampShaderWidget" name="mColorRampShaderWidget" native="true"/>
        </item>
-       <item row="1" column="0" colspan="2">
+       <item row="1" column="1">
         <layout class="QHBoxLayout" name="horizontalLayout" stretch="0,1,0,1,0">
          <item>
           <widget class="QLabel" name="label_3">