From 4476303fae9dfe44b1b0aee35a1978f9c885ff1d Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Sat, 4 Jul 2026 23:31:09 +0200
Subject: Removing vtk

---
 vtk_to_png.py | 75 -----------------------------------------------------------
 1 file changed, 75 deletions(-)
 delete mode 100644 vtk_to_png.py

diff --git a/vtk_to_png.py b/vtk_to_png.py
deleted file mode 100644
index 9c3f4f3..0000000
--- a/vtk_to_png.py
+++ /dev/null
@@ -1,75 +0,0 @@
-import vtk
-import glob
-import os
-
-vtk_files = sorted(glob.glob("*.vtk"))
-output_dir = "frames"
-os.makedirs(output_dir, exist_ok=True)
-
-renderer = vtk.vtkRenderer()
-render_window = vtk.vtkRenderWindow()
-render_window.SetOffScreenRendering(1)
-render_window.SetSize(1024, 512)
-render_window.AddRenderer(renderer)
-
-renderer.SetBackground(1, 1, 1)
-
-camera_initialized = False
-
-for i, vtk_file in enumerate(vtk_files):
-    reader = vtk.vtkStructuredPointsReader()
-    reader.SetFileName(vtk_file)
-    reader.Update()
-
-    image = reader.GetOutput()
-
-    mag = vtk.vtkImageMagnitude();
-    mag.SetInputData(image);
-    mag.Update();
-    image = mag.GetOutput();
-    scalar_name = "Velocity magnitude";
-
-    scalars = image.GetPointData().GetScalars()
-    if scalars is None:
-        raise RuntimeError("No scalar data found")
-
-    vmin, vmax = scalars.GetRange()
-
-    # Image slice mapper (2D!)
-    slice_mapper = vtk.vtkImageSliceMapper()
-    slice_mapper.SetInputData(image)
-
-    # Pick the only slice (or middle if dimension >1)
-    extent = image.GetExtent()
-    slice_mapper.SetSliceNumber(extent[4])  # Z slice
-
-    slice_actor = vtk.vtkImageSlice()
-    slice_actor.SetMapper(slice_mapper)
-
-    # Grayscale mapping
-    prop = slice_actor.GetProperty()
-    prop.SetColorWindow(vmax - vmin)
-    prop.SetColorLevel(0.5 * (vmax + vmin))
-
-    renderer.RemoveAllViewProps()
-    renderer.AddViewProp(slice_actor)
-
-    if not camera_initialized:
-        renderer.ResetCamera()
-        camera_initialized = True
-
-    render_window.Render()
-
-    # Capture to PNG
-    w2i = vtk.vtkWindowToImageFilter()
-    w2i.SetInput(render_window)
-    w2i.ReadFrontBufferOff()
-    w2i.Update()
-
-    writer = vtk.vtkPNGWriter()
-    writer.SetFileName(f"{output_dir}/frame_{i:04d}.png")
-    writer.SetInputConnection(w2i.GetOutputPort())
-    writer.Write()
-
-    print(f"Saved frame {i} range=({vmin},{vmax})")
-
-- 
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