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Overview
There are two issues that you may stumble upon when exporting curves from Houdini:
- The point @width attribute is not present on your geometry – as discussed earlier in Chapter 02: Particles, V-Ray looks at the @width attribute to determine the diameter of the strands.
- The @width attribute is changing dramatically from one point to the next (i.e., first point width equal to 0.1 and last point width equal to 50) – in a case like this, you may notice the tubes looking rather like a bunch of spheres stacked one after the other. There aren't many approaches to this case, beside increasing the point count on the curves to soften the transition or decreasing the min/max range for the width.
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Footnotes
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