From 2c209278db5081285e096b17baafdee15783e595 Mon Sep 17 00:00:00 2001
From: Richard Salomon <r_salo04@wwu.de>
Date: Mon, 17 Aug 2026 10:57:53 +0200
Subject: [PATCH 1/3] Fix VTK 9.7 deprecation warning

See https://docs.vtk.org/en/latest/release_details/9.7/add-vtkAbstractArray-reserve-and-capacity.html
---
 KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh b/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
index ad096e8ec..07f0ba515 100644
--- a/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
+++ b/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
@@ -83,7 +83,7 @@ template<typename ValueType> void KVTKIterationPlotter<ValueType>::CreatePlot()
 #endif
     dots->SetColor(0, 0, 0, 255);
 
-    if (fArrayX->GetSize() >= 2) {
+    if (fArrayX->GetCapacity() >= 2) {
         vtkPlot* line = fChart->AddPlot(vtkChart::LINE);
 #if VTK_MAJOR_VERSION <= 5
         line->SetInput(table, 0, 1);

From 3fa625753fb3624426cb88b65db010c39625c47a Mon Sep 17 00:00:00 2001
From: Richard Salomon <r_salo04@wwu.de>
Date: Mon, 17 Aug 2026 11:15:47 +0200
Subject: [PATCH 2/3] Ensure backwards compatibility

---
 KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh b/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
index 07f0ba515..776a26e36 100644
--- a/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
+++ b/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
@@ -16,6 +16,7 @@
 #include <vtkSmartPointer.h>
 #include <vtkTable.h>
 #include <vtkVersion.h>
+#include <vtkVersionMacros.h>
 
 namespace KEMField
 {
@@ -82,8 +83,11 @@ template<typename ValueType> void KVTKIterationPlotter<ValueType>::CreatePlot()
     dots->SetInputData(table, 0, 1);
 #endif
     dots->SetColor(0, 0, 0, 255);
-
+#if VTK_VERSION_NUMBER >= VTK_VERSION_CHECK(9, 7, 0)
     if (fArrayX->GetCapacity() >= 2) {
+#else
+    if (fArrayX->GetSize() >= 2) {
+#endif
         vtkPlot* line = fChart->AddPlot(vtkChart::LINE);
 #if VTK_MAJOR_VERSION <= 5
         line->SetInput(table, 0, 1);

From d2217433608ea48ae2b69b5c9d63366763eb9e01 Mon Sep 17 00:00:00 2001
From: Richard Salomon <r_salo04@wwu.de>
Date: Mon, 17 Aug 2026 12:16:53 +0200
Subject: [PATCH 3/3] Backward compatible VTK version check

---
 KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh b/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
index 776a26e36..80b93ac10 100644
--- a/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
+++ b/KEMField/Source/Plugins/VTK/include/KVTKIterationPlotter.hh
@@ -16,7 +16,6 @@
 #include <vtkSmartPointer.h>
 #include <vtkTable.h>
 #include <vtkVersion.h>
-#include <vtkVersionMacros.h>
 
 namespace KEMField
 {
@@ -83,7 +82,7 @@ template<typename ValueType> void KVTKIterationPlotter<ValueType>::CreatePlot()
     dots->SetInputData(table, 0, 1);
 #endif
     dots->SetColor(0, 0, 0, 255);
-#if VTK_VERSION_NUMBER >= VTK_VERSION_CHECK(9, 7, 0)
+#if VTK_VERSION_NUMBER >= 90700000000ULL 
     if (fArrayX->GetCapacity() >= 2) {
 #else
     if (fArrayX->GetSize() >= 2) {