Hey Dave! Thanks for giving a hand on this. but actually the outer curve is the positive offset of the original curve (middle). This is also deviating. ‘UNF’ = unfortunately
thanks a lot. You approach would work in a lot of cases. but I think there have to be a solid way of a ‘loose Offset’ command.
Agreed. If you need more accuracy, you always have the normal offset and the ‘lowered tolerance’ offset.
But, if you have a fully closed shape with only 7 control points, your result is what I would expect. Try to make the same curve with 12 control points (+/-) and it might work better. Also, don’t offset so far! That never works and gives you self-intersections.
Valid observations, but this technique is only designed for loosely offset curves where the concern is to keep the same number of control points. No other guarantees are implied or intended, regarding accuracy, mangling, or any other physical symptoms that may result. If dizziness or swelling occurs, please see a doctor.
A wise man once wrote:[quote=“schultzeworks, post:7, topic:18349”]
Its an estimate. The trade off of losing accuracy is that you get an exact number of control points, which is far better than doing it manually, point-by-point. That’s actually how I developed the technique. If you’re modelling an organic character, no one will ever see (or care!) about the resulting deviation.
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Hi, yup…did that, very acceptable result visually, it must suffice in light of fact that mathematically its not possible to attain the shape I had any other way.
Dave…thanks for the video and method, now added to most useful commands word doc
I have a vaguely related question: how does one invoke an AutoCad like command similar to ltscale? In other words, once assigning a linetype to a line, I can’t find a way to scale that line such that the dashes, dots, or other patterns will show while printing. This is something I don’t normally need to do, but has come up recently. Cheers, Rob
If I remember correctly, this is related to the drawing sheet and scale. In other words, the line width will change according to the scale settings. Any example? Screenshot? Not an intensive AC user but let’s see if I can help.
for those interested, I created a script that offsets curves loosely by offsetting the control points in a direction normal to the original curve, which has a different outcome then other techniques posted here. Script can be found here
Rhino 6 Beta just installed (why does the icon still say WIP?) Anyways, its two years later and I’m so proud to report that my suggestion has made it into the product! Who says McNeel doesn’t listen to users?
To be honest, they never acknowledged my brilliant suggestion or communicated that it was the least bit useful. As far as I know, this is a coincidence of biblical proportions.