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making a pipes system

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HI guys

I'm working on a pipes system based of a curve, the problem I have is that when a pipe changes plane, the corner joint

won't follow, here's a pic.


I oriented the normals to follow the curve but one the curve goes up, it needs and extra twist.

thanks guys

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you can use the cross product of the current normal and the previous normal as an up vector for the copy operation. - this does imply you don't have two point on the same line next to each other without a change of direction, as that will screw up the result of the cross product.

I added color to the cornerpieces to make it visible in which direction they are pointing.



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