The vertical curve is the only input while making powercopies of those pipes.
The color of each pipe is controlled by the pipe's surface area. While the global parameters are the factor controlling the multiplicity of the pipe length and the color cutoff area, the local parameters are the random ratio of point on the curve and the random rotation angle range. Consequently, two separate excel sheet is set in order to generate the random numbers, thus they are able to behave independently.
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| length factor |
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| random position along the curve |
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| control of random rotation angle range |
The problem is that the diameter of the pipe profile and the length of the pipe is supposed to reflect the distance between the projection of the origin point on normal plane and the point on curve, but when I change the curve, the length of the pipe became so exaggerated. A new formula relationship between curve and pipe figure would be productive.
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