Creating Cylinders in the NURBS toolbox

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Brian 2012-1-3

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https://ww2.mathworks.cn/matlabcentral/answers/25241-creating-cylinders-in-the-nurbs-toolbox

Hello, thanks for reading this,

I have a question about using the NURBS toolbox; namely creating geometrical cylinders and using those for IGES export.

I can create cylinders in MATLAB using the toolbox, but I was wondering if there was another way to declare cylinders besides the given ways they mentioned.

What I would like to do is declare two points (which are the start and endpoint for a given cylinder), and a radius of the cylinder (that is what I used in Ansys to create a cylinder). In the NURBS toolbox nrbcylind.m file, what you do is mention the center of the cylinder and the radius. Unfortunately, this means that every cylinder I create will be oriented the same way (which is a problem).

Any ideas? Is this possible?

Thanks for the help!

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Brian 2012-1-3

If impossible, I can make due with using the center points using some geometrical manipulation; the reason why I asked is because the orientation of the cylinder is most important thing. When I have a bifurcation leading to new cylinders, I would like to be able to control the angle of separation.

Declaring start and endpoitns would eliminate this issue, because the need for a angle with the cylinder would be eliminated. However, if I only use center points I would need to input the angle as well.

Any ideas?