But why? Why can a circle be circular out of the gate? Deep in my heart I know that even when I get a smooth circle by setting a super-fine tolerance, I am still working with a polygon.Ĭlearly I misunderstand something very fundamental. Sidebar: I have also observed same behavior when drawing "circles", but there I can at least smooth things out using tolerance. What do I need to do to have my curves drawn as curves? Naturally, there are only two End Points.Īnd yet instead of a, well, curve, I see what appears as five joined straight segments. It's a cubic curve with four Control Vertices. They are mathematical in their creation and their tessellation at render time creates super smooth results. If one wants a sharp bend, an angle, one has to join/connect two separate NURBS curves. NURBs (Non Uniform Rational B-splines): These, on the other hand, are fantastic for creating smooth, curved surfaces, such as a car bonnet. NURBS curves, especially ones created with tools (like CV or EP tool) are supposed to flow smoothly.The curves created via Create->Curve Tools->CV Curve Tool are NURBS curves.Whatever the cause, the very foundations of my understanding are challenged to the degree where I am deeply uncomfortable proceeding till some kind soul sets me straight. Or maybe I have missed/misunderstood some vital preference. I am switching away fro Rhino, so i may be laboring under false assumptions.
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