parametric representation of a closed “Cylinder”











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Assume I have a parametric curve $r(t) = <X(t),Y(t)>$ that defines a closed curve (like a circle or a closed B-spline) on a 2D plane.



The cylinder can be defined as:



$f(u,v) = <X(u), Y(u), v>$



For bounded values of $u$ and $v$.



This however gives us a sleeve (there's holes on the top and the bottom). If $r(t)$ is any arbitrary, paramateric, closed curve defined in 2D, how can you close the top?










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    down vote

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    Assume I have a parametric curve $r(t) = <X(t),Y(t)>$ that defines a closed curve (like a circle or a closed B-spline) on a 2D plane.



    The cylinder can be defined as:



    $f(u,v) = <X(u), Y(u), v>$



    For bounded values of $u$ and $v$.



    This however gives us a sleeve (there's holes on the top and the bottom). If $r(t)$ is any arbitrary, paramateric, closed curve defined in 2D, how can you close the top?










    share|cite|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Assume I have a parametric curve $r(t) = <X(t),Y(t)>$ that defines a closed curve (like a circle or a closed B-spline) on a 2D plane.



      The cylinder can be defined as:



      $f(u,v) = <X(u), Y(u), v>$



      For bounded values of $u$ and $v$.



      This however gives us a sleeve (there's holes on the top and the bottom). If $r(t)$ is any arbitrary, paramateric, closed curve defined in 2D, how can you close the top?










      share|cite|improve this question













      Assume I have a parametric curve $r(t) = <X(t),Y(t)>$ that defines a closed curve (like a circle or a closed B-spline) on a 2D plane.



      The cylinder can be defined as:



      $f(u,v) = <X(u), Y(u), v>$



      For bounded values of $u$ and $v$.



      This however gives us a sleeve (there's holes on the top and the bottom). If $r(t)$ is any arbitrary, paramateric, closed curve defined in 2D, how can you close the top?







      geometry differential-geometry manifolds parametric






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      asked yesterday









      Makogan

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