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generative modeling for Rhino

James Schollum
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James Schollum's Discussions

Curve point's 'strength'
13 Replies

HiPlease see the attached photo - as an example, I'm making a curve through 4 points. I'm wondering if there's any way to assign a 'strength' to each point, for example a slider, where if the value…Continue

Started this discussion. Last reply by Danny Boyes May 7.

Lofting between two curves, but only 'half-way'
1 Reply

HiI've got a problem that hopefully has an easy solution - please see the attached image.I've got two curves, shown as orange and pink. The orange curve is quite long, and part-way along it I have a…Continue

Started this discussion. Last reply by James Schollum May 5.

 

James Schollum's Page

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Danny Boyes replied to James Schollum's discussion Curve point's 'strength'
"Have you ever used Maxsurf? They regularly do this sort of thing to create knuckles. But when you try and use the IGES files that have been created this way in other software (analytic) where you are dynamically meshing the hull for CFD or…"
May 7
Fred Becquelin replied to James Schollum's discussion Curve point's 'strength'
"Could you explain? I hardly ever experienced issues doing this :/"
May 7
Danny Boyes replied to James Schollum's discussion Curve point's 'strength'
"It's incredibly bad practice to "stack" control points. the maths involved goes crazy. I highly recommend you do not include the "exact" same point. You will need to move it ever so slightly"
May 7
James Schollum replied to James Schollum's discussion Curve point's 'strength'
"Yes I tried that too thanks, but it's not what I'm after. The example I gave, with the 4 points, is just that - an example. My full project has multiple curves, each made from about 40 points. It's hard to explain, but thanks anyway."
May 7
Danny Boyes replied to James Schollum's discussion Curve point's 'strength'
"I don't believe you tried the Nurbs Curve component "
May 7
James Schollum replied to James Schollum's discussion Curve point's 'strength'
"Thanks everyone for their help - I've tried all the suggestions but they're not really what I'm after. I'm just going to 'cheat' by adding the point again when merging the points together - see the attached photo.…"
May 7
Danny Boyes replied to James Schollum's discussion Curve point's 'strength'
May 7
Jesus Galvez replied to James Schollum's discussion Curve point's 'strength'
"I don't understand what [Knot Vector] does. I input the length of the point list (4) and get: 0.0 0.0 0.0 1.0 1.0 1.0 Could you clarify a bit Danny? Thanks!"
May 7
Danny Boyes replied to James Schollum's discussion Curve point's 'strength'
"There is a Nurbs Curve component that allows you to specify weights. You will need to manually input Knot Vectors but there is a default component available as well. "
May 7
Jesus Galvez replied to James Schollum's discussion Curve point's 'strength'
"This is a practical solution, maybe it won't work for you. Try first averaging the points to get the barycenter. Then plotting lines from the barycenter to each point. Then evaluate the lines and finally to what Michael said with the evaluated…"
May 7
Michael Pryor replied to James Schollum's discussion Curve point's 'strength'
"try this. "
May 7
James Schollum replied to James Schollum's discussion Curve point's 'strength'
"Thanks for your reply, but I want to be able to adjust each point individually, not all 4 points at the same time. I also need it to be quite controlled, which is why I thought a slider, from 0 to 1, rather than integers, as you use in Curve…"
May 7
Michael Pryor replied to James Schollum's discussion Curve point's 'strength'
"change the curve degree. "
May 7
James Schollum posted a discussion

Curve point's 'strength'

HiPlease see the attached photo - as an example, I'm making a curve through 4 points. I'm wondering if there's any way to assign a 'strength' to each point, for example a slider, where if the value is 0 the point has not impact of the curve, and where the value is 1, the curve forms a sharp corner at that point.Does anyone have any ideas?Thanks…See More
May 7
James Schollum replied to James Schollum's discussion Lofting between two curves, but only 'half-way'
"Problem solved - I shattered the orange curve at the pink point, then lofted the resulting curve. I knew it would be an easy solution!"
May 5
James Schollum posted a discussion

Lofting between two curves, but only 'half-way'

HiI've got a problem that hopefully has an easy solution - please see the attached image.I've got two curves, shown as orange and pink. The orange curve is quite long, and part-way along it I have a point that's the first point of the pink curve. I want to loft between these two curves, but when I do, it obviously lofts between the whole length of the two curves, rather than just the part of the orange curve 'after' that pink point.I hope I've explained that well.... Any help would be much…See More
May 5

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