![]() ![]() ![]() The next step is to automatize all this using scripts. The use of Filters is not clear in the beginning, but after playing with some examples, everything becomes really easy to use. I heard that Paraview could to many things when dealing with visualization aspects, but I hesitated to use it until now since the interface is not straightforward. Then go to File/Save Animation to save it to a file. Once everything is set, click the play button to see the animation. You’ll be presented with multiple options, like the center of rotation, direction of the vertical and initial position. Add a Camera object with Orbit field selected. Just go to View and select the Animation box. You can also create animations in a pretty straightforward way. You can also symmetrize your geometry using the Reflect filter. Below you can see a result built from my work. Many other features are directly available: you can color the level set following another scalar value, you can set the lighting, etc. The difference is that you need to specify two values and Paraview will draw the surface enclosing the points corresponding to these values. If you want to have a closed region instead, you need to use the IsoVolume filter instead of the Contour one. If your level-set cuts the boundary of the domain, Paraview will draw a hole there. You’ll have to select the field for which the contours will be drawn and then put in the values of the level-sets you want to see. Then apply the Contour filter (by clicking the button or going in Filters/Alphabetical).11.1 ) that allows you to customize the Axes Grid. Clicking on the Edit button will pop up the Axes Grid properties dialog ( Fig. ![]() Under the View section, you check the Axes Grid checkbox to turn the Axes Grid on for the active view. Next, go to Filters/Alphabetical and select “Cell Data to Point Data” (if you forget to do this, you’ll get a rough surface where you see the discretization). The basics To turn on the Axes Grid for a Render View, you use the Properties panel.Load your file (containing points with at least a scalar value) and click Apply.If you want to create level-sets associated to certain values, follow the steps below: In the vtk file you need to have a set of points and a scalar value attached to them. I use vtk file format for which there is a nice automated interface in the software I use for the optimization ( FreeFem++). First of all, you’ll need your data in some format that Paraview can understand. I’ll briefly describe below how to use Paraview to make some nice pictures of level-sets. Paraview is a nice, open source framework, which has the right tools in order to produce high quality plots. It is nice to have good looking plots when working with the level-set method in shape optimization. Given a set of points with values attached to them a level set associated to a certain number will separate the points into two sets: with values higher or lower than the number considered. Surfaces can be represented as certain level-sets for some 3D functions. ![]()
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