When stepping between different time steps, the data disappears like it is sliced and the slicing plane is moved backwards. See attached gif for visualization. A couple of time steps later, the slicing moves back, and the data is visible again.
However, if you just zoom a bit out, the data is completely visible again. Nevertheless, the same camera/focus point position is fine with another dataset.
The state file has been attached, for RenderView 2 it happens between step 260 and 470.
Any idea what is causing this and how I can fix it? Thank you very much in advance.
Problem occurs with multiple ParaView versions. Further details:
Ubuntu 22.04, AMD 3970X, NVIDIA RTX 4070, tested with ParaView 5.10.1, 5.11.1, 5.12.1, and 5.13.1, occurs with paraview client binary and pvbatch binary, all versions were downloaded from ParaView homepage.
This is tricky. The reason your geometry is disappearing is due to the near clipping range. Like most 3D renderers, the renderer in ParaView establishes a “near clipping plane” some distance away from the position of the camera. Anything behind this plane (on the camera side) is removed from the rendering and treated as behind the camera. For math/precision reasons I won’t get into, the near clipping plane cannot be too close to the camera. ParaView automatically sets the near clipping plane to be as close as reasonable while still providing enough detail for depth sorting.
This adjustment can cause problems when you zoom into a small part of the data. You need to get the camera near this small piece to zoom in, but ParaView wants to set the clipping planes far enough away to catch the geometry at the far end of the data (that you may not care about).
This is what is happening in your data. It looks like the geometry of that cylinder is about 0.002 units in the x and y directions and about 0.012 in the z direction. However, the fluid geometry is much larger. Although most of the points are in that cylinder (and those might be the only ones you care about), there are some as far as 37 in the x direction and 16 in the y direction. ParaView is trying to adjust the camera to catch geometry that far away. That is pushing the near plane past the geometry you care about.
A simple fix is to remove geometry away from the region you don’t care about. You can do that by applying the Extract Cells By Region filter, setting the intersection region to Box, and modifying the parameters around the small area that you care about.
