diff --git a/particle-track-and-trace/src/QT/MainWindow.cpp b/particle-track-and-trace/src/QT/MainWindow.cpp
index 7595eee..ceae547 100644
--- a/particle-track-and-trace/src/QT/MainWindow.cpp
+++ b/particle-track-and-trace/src/QT/MainWindow.cpp
@@ -178,10 +178,10 @@ void MainWindow::on_SquareButton_clicked(bool checked) {
 }
 
 
-void MainWindow::on_HexagonButton_clicked(bool checked) {
+void MainWindow::on_CrossButton_clicked(bool checked) {
   if (checked) {
     for (Technique *t : ui->program->getTechniques()) {
-      t->setGlyphStyle(HEXAGON);
+      t->setGlyphStyle(CROSS);
     }
     ui->program->requestRender();
   }
diff --git a/particle-track-and-trace/src/QT/MainWindow.h b/particle-track-and-trace/src/QT/MainWindow.h
index 32516a7..a377400 100644
--- a/particle-track-and-trace/src/QT/MainWindow.h
+++ b/particle-track-and-trace/src/QT/MainWindow.h
@@ -26,7 +26,7 @@ private slots:
   void on_CircleButton_clicked(bool checked);
   void on_TriangleButton_clicked(bool checked);
   void on_SquareButton_clicked(bool checked);
-  void on_HexagonButton_clicked(bool checked);
+  void on_CrossButton_clicked(bool checked);
   void on_FullySampledButton_clicked(bool checked);
   void on_RegularlySubsampledButton_clicked(bool checked);
   void on_IregularlySubsampledButton_clicked(bool checked);
diff --git a/particle-track-and-trace/src/QT/ui_mainwindow.h b/particle-track-and-trace/src/QT/ui_mainwindow.h
index 794ba0c..16dd934 100644
--- a/particle-track-and-trace/src/QT/ui_mainwindow.h
+++ b/particle-track-and-trace/src/QT/ui_mainwindow.h
@@ -47,7 +47,7 @@ public:
     QRadioButton *CircleButton;
     QRadioButton *TriangleButton;
     QRadioButton *SquareButton;
-    QRadioButton *HexagonButton;
+    QRadioButton *CrossButton;
     QGroupBox *GlyphBox_2;
     QVBoxLayout *verticalLayout_16;
     QRadioButton *FullySampledButton;
@@ -188,10 +188,10 @@ public:
 
         verticalLayout_14->addWidget(SquareButton);
 
-        HexagonButton = new QRadioButton(GlyphBox);
-        HexagonButton->setObjectName(QString::fromUtf8("HexagonButton"));
+        CrossButton = new QRadioButton(GlyphBox);
+        CrossButton->setObjectName(QString::fromUtf8("CrossButton"));
 
-        verticalLayout_14->addWidget(HexagonButton);
+        verticalLayout_14->addWidget(CrossButton);
 
         GlyphBox_2 = new QGroupBox(ChannelBox);
         GlyphBox_2->setObjectName(QString::fromUtf8("GlyphBox_2"));
@@ -260,11 +260,11 @@ public:
         CircleButton->setText(QCoreApplication::translate("MainWindow", "Circle", nullptr));
         TriangleButton->setText(QCoreApplication::translate("MainWindow", "Triangle", nullptr));
         SquareButton->setText(QCoreApplication::translate("MainWindow", "Square", nullptr));
-        HexagonButton->setText(QCoreApplication::translate("MainWindow", "Hexagon", nullptr));
+        CrossButton->setText(QCoreApplication::translate("MainWindow", "Cross", nullptr));
         GlyphBox_2->setTitle(QCoreApplication::translate("MainWindow", "Glyph count", nullptr));
         FullySampledButton->setText(QCoreApplication::translate("MainWindow", "Fully sampled", nullptr));
         RegularlySubsampledButton->setText(QCoreApplication::translate("MainWindow", "Regularly subsampled", nullptr));
-        IregularlySubsampledButton->setText(QCoreApplication::translate("MainWindow", "Irregularly sampled", nullptr));
+        IregularlySubsampledButton->setText(QCoreApplication::translate("MainWindow", "Irregularly subsampled", nullptr));
     } // retranslateUi
 
 };
diff --git a/particle-track-and-trace/src/layers/LGlyphLayer.cpp b/particle-track-and-trace/src/layers/LGlyphLayer.cpp
index 13a2169..d458553 100644
--- a/particle-track-and-trace/src/layers/LGlyphLayer.cpp
+++ b/particle-track-and-trace/src/layers/LGlyphLayer.cpp
@@ -59,13 +59,13 @@ LGlyphLayer::LGlyphLayer(std::shared_ptr<UVGrid> uvGrid, std::unique_ptr<Advecti
   vtkSmartPointer<vtkTransformFilter> transformFilter = createCartographicTransformFilter(uvGrid);
   transformFilter->SetInputData(data);
 
-  vtkNew<vtkGlyphSource2D> circleSource;
-  circleSource->SetGlyphTypeToCircle();
-  circleSource->SetScale(0.02);
-  circleSource->Update();
+  this->glyphSource = vtkSmartPointer<vtkGlyphSource2D>::New();
+  this->glyphSource->SetGlyphTypeToCircle();
+  this->glyphSource->SetScale(0.02);
+  this->glyphSource->Update();
 
   vtkNew<vtkGlyph2D> glyph2D;
-  glyph2D->SetSourceConnection(circleSource->GetOutputPort());
+  glyph2D->SetSourceConnection(this->glyphSource->GetOutputPort());
   glyph2D->SetInputConnection(transformFilter->GetOutputPort());
   glyph2D->SetScaleModeToDataScalingOff();
   glyph2D->Update();
@@ -202,6 +202,23 @@ void LGlyphLayer::setSaturationMode(SaturationMode mode) {
   }
 }
 
+void LGlyphLayer::setGlyphStyle(GlyphStyle style) {
+  switch (style) {
+    case CIRCLE:
+      this->glyphSource->SetGlyphTypeToCircle();
+      break;
+    case SQUARE:
+      this->glyphSource->SetGlyphTypeToSquare();
+      break;
+    case TRIANGLE:
+      this->glyphSource->SetGlyphTypeToTriangle();
+      break;
+    case CROSS:
+      this->glyphSource->SetGlyphTypeToCross();
+      break;
+  }
+}
+
 
 void LGlyphLayer::setDt(int dt) {
   this->dt = dt;
diff --git a/particle-track-and-trace/src/layers/LGlyphLayer.h b/particle-track-and-trace/src/layers/LGlyphLayer.h
index 0a1411c..38c9a77 100644
--- a/particle-track-and-trace/src/layers/LGlyphLayer.h
+++ b/particle-track-and-trace/src/layers/LGlyphLayer.h
@@ -4,6 +4,7 @@
 #include "Layer.h"
 #include "../advection/kernel/AdvectionKernel.h"
 #include "../commands/SpawnPointCallback.h"
+#include <vtkGlyphSource2D.h>
 #include <vtkPolyData.h>
 #include <vtkInteractorStyle.h>
 
@@ -18,6 +19,7 @@ private:
   vtkSmartPointer<vtkIntArray> particlesAge;
   vtkSmartPointer<vtkIntArray> lutIdx;
   vtkSmartPointer<vtkPolyDataMapper> mapper;
+  vtkSmartPointer<vtkGlyphSource2D> glyphSource;
   std::unique_ptr<AdvectionKernel> advector;
   std::shared_ptr<UVGrid> uvGrid;
   int dt = 3600;
@@ -54,6 +56,7 @@ public:
 
   void setColourMode(ColourMode mode) override;
   void setSaturationMode(SaturationMode mode) override;
+  void setGlyphStyle(GlyphStyle style) override;
 
   /** 
    * Sets a custom DT value, needed for advect calls to the simulation logic.
diff --git a/particle-track-and-trace/src/layers/enums.h b/particle-track-and-trace/src/layers/enums.h
index 2639e07..1637693 100644
--- a/particle-track-and-trace/src/layers/enums.h
+++ b/particle-track-and-trace/src/layers/enums.h
@@ -25,7 +25,7 @@ enum GlyphStyle {
   CIRCLE = 0,
   TRIANGLE = 1,
   SQUARE = 2,
-  HEXAGON = 3,
+  CROSS = 3,
 };
 
 enum SamplingMode {