SliceContourPlot3D
SliceContourPlot3D[f,surf,{x,xmin,xmax},{y,ymin,ymax},{z,zmin,zmax}] generates a contour plot of f over the slice surface surf as a function of x, y, and z.
SliceContourPlot3D[f,surf,{x,y,z}∈reg] restricts the surface to be within region reg.
SliceContourPlot3D[f,{surf1,surf2,…},…] generates contour plots over several slices.
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