Hi all,<div><br></div><div>Some of non-linear cell types are not clear to me. Certainly, it should interpolate all control points however when I looked at wireframe rendering it seems like they are just subdivided(without any further alternation).</div>
<div>CylinderQuadratic.vtk from vtkData is a good example, which uses Quadratic Tetrahedrons and it didn't looked much different than CylinderLinear.vtk except some extra vertices in between.</div><div>In fact, when I manually render CylinderQuadratic.vtk using only linear interpolation(i.e, just rendering each face as polygons) I get exact same result to CylinderLinear.vtk.</div>
<div>So I'd like to know where I can find the formula for Quadratic Interpolation that VTK used. Can I use any interpolation function that will pass through control points? If so, how many in-betweening points do I put for each edge(perhaps 1)?</div>
<div><br></div><div>Thanks,</div><div>--</div><div>Jeonggyu Lee</div>