mers considering extreme sports reject mainstream retailers and like to check out small stores rather of at chains plus malls. Several smaller retailers discuss trends in sports shoe sales. http://skateszone.com/
Though athletic shoes and sports stores and from doorways retailers have reported somewhat uptick in footwear sales due to the increase in extreme sports, the particular beneficiaries inside the trend are independent surf and skate niche stores.
Some West Coast surf and skate shops stated teenagers and even more youthful Generation Xers are not only rejecting traditional sports, but they're also shunning mainstream retailers and malls meant for smaller niche shops transporting hard-to-come-by brands.
Eddie Miyoshi, district manager at Atomic Garage, a 3-store chain situated in Gardena, Calif., stated the soaring recognition of skateboard footwear has boosted the retailer's total footwear business 20-thirty percent this year, rather of '95.
Skate footwear presently represent 80-90 % of Atomic Garage's shoe sales, while couple of years back, Dr. Martens and Timberland drove the retailer's footwear business.
Like many retailers, Miyoshi pointed to Airwalk since the trend's catalyst.
However, if Airwalk broadened its distribution to larger chains, which are frequently located in malls, only a few skate shoe customers adopted. Rather, many youthful males have switched for your skate shops for additional elusive brands like Etnies, Duffs, and Electricity Footwear by Circus. By refusing to market bigger retailers or sports stores, these brands are increasing their cachet among youthful consumers.
"Kids don't want stuff which have been within the shops,In . Miyoshi added.
Searching ahead, Miyoshi forecasted skate shoe sales will remain strong through spring '97 provided "the [hot] vendors don't auction other [non-particularly shop] retailers."
"Skaters and non-skaters are rebelling against mainstream retailers so on to surf and skate shops for many looks," echoed Mark Richards, co-online sources Val Surf, a 3-store chain situated in North Hollywood, Calif. Soaring sales of skate footwear have driven total footwear receipts up 25 percent this year rather of '95.
"The quantity of that increase might be connected while using exposure of maximum games? I am unsure. [Skate footwear] may also be actually the think about the moment,In . Richards acknowledged. And in relation to getting this right look, youthful customers can be very picky.
"Skateboard footwear is a huge category for people, but we're not able to own the brands, Etnies, Duffs, Electricity and Nice, simply because they won't sell us," stated Mark Anderson, buyer at Chick's Sports, a six-store chain in Covina, Calif. "We have people coming every single day requesting them." Consequently, skate footwear have consistently ongoing to obtain about 5 % of Chick's overall footwear business. http://skateszone.com/the-top-8-best-skateboards-for-beginners-reviews-2017/
Nonetheless, some outdoors, niche sports and sports retailers are noting the growing recognition and coverage of maximum sports will receive a modest impact on footwear sales. Trailrunning footwear and approach/outdoors crosstrainers will be the two groups benefiting the very best inside the recognition. Like the skate shoe business, some retailers realize that styling instead of function frequently drives sales of individuals footwear.
"At this time the merchandise is a lot more visual than function," stated Chet James, gm of Super Jock 'N Jill, Dallas, speaking about trailrunning footwear. Still, James noted the current hype over adventure sports helps draw more customer traffic. "The marketing campaigns and media help bring growing figures of people in, nonetheless they frequently occasions day an issue that increases results on their own account,Inch he conceded.
John Wilkinson, executive vp inside the 85-store chain Track 'N Trail, Eldorado Hillsides, Calif., stated the shop has "seen some activity in approach footwear," but he requested the amount of consumers depend in it commercially sport. And, instead of accelerating total footwear business, Wilkinson speculated elevated sales of approach footwear and trailrunners are gnawing away at traditional hiking shoe and boot volume.
But Dan Bazinet, president of Overland Exchanging, a 34-store chain situated in Westford, Mass., believes the company-new looks have breathed existence for the wilting hiking boot category. "[Approach-type footwear] don't represent the lion's participate the hiking market, nonetheless they have elevated the hiking business and provided us extra sales," Bazinet stated.
He designated Timberland's Treeline Series and Rockport's Leadville line as strong performers. Unsurprisingly, he noted the company-new looks are attractive to youthful consumer base than traditional hikers.
For that month of June, sales of men's hikers were up 49 percent at Overland, rather of June '95, while sales of women's hikers were up 17 % for that month. Bazinet also attributed elevated sales that shops walked inside the hiking business, departing that business for that specialists.
Some retailers draw a good example concerning the hiking boom of two yrs ago combined with the current extreme sport phenomenon. "Plenty of bigger chains will get a specific percent in the industry while [extreme] sports remain a fad because they are selling cost-point type gear," described Steven Carre, assistant hard goods buyer at Adventure 16, a six-store chain situated in Hillcrest.
"However individuals [true enthusiasts] will say `we need real gear' and may shown up at us. That will help us after a while. What Size Skateboard good for an 3 4 5 6 7 8 9 10 11 12 13 14 year old
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r "virtual partitions" as follows:
What I mean "air walls" here, is derived from the description of the E+ documentation with the header of "Air wall, Open air connection between zones". (Page 17, http://apps1.eere.energy.gov/buildings/energyplus/pdfs/tips_and_tricks_using_energyplus.pdf)
As I understand, the term "air wall" used in E+ here refers to a description of something like "boundary condition" between adjacent interzone heat transfer surfaces, but not a kind of "construction or material" (like air space resistance or air gaps within a wall/double glazing window).
The main purpose of introducing the "air wall", is to simulate or approximate the airflow/convection/natural ventilation effect between multiple thermal zones which are connected by a large opening.
In my previous tests, using HBzones and GB, I managed to create the gbXML file which can be successfully imported to DB (without assigning any constructions within HB). And the adjacency condition can be recognized automatically by DB, even when I did not use the "Solve adjacencies" component in HB - shared surfaces between multiple thermal zones are recognized automatically by BD as "internal - partition"(which are standard partitions, but not virtual partitions).
In order to create/approximate "virtual partition", I need to manually draw a "hole" in the standard partition surface (fig.1&2). Again, the reason why we want to use "virtual partitions"(or "air wall") is that it allows airflow between multiple thermal zones which are connected by large openings and we could get different temperature of the each subdivided thermal zone which compose a large thermal zone.
My question is, if there is a possible way to simulate/approximate this kind of "virtual partitions"(or "air wall") in HBzones or in GB? If so, I would like to test if DB recognizes it or not. Actually, we expect that there is no need to involve any manual operations (like drawing a "hole" in the standard partition surface) in DB, due to an automatic optimization loop.
Thank you!
Best,
Ding
fig.1
fig.2
…
d the fact that one pipe goes out and one goes in, that the surface normal direction is opposite for the two surfaces? Based on an earlier thread, you should know why by now. The two curves have opposite directions (again!); see the white arrows using Rhino 'Analyze | Direction'?
As before, you can fix that by flipping one curve to match the other. HOWEVER, you connected your curves directly to the 'Divide' components instead of using 'Crv' geometry params - bad form. And as before, you "fixed it" by reversing the list of starting points ('S' input to 'BiArc'). Better like this - 'Crv' params are internalized, no need for Rhino file:
Well, well! That didn't fix the opposite surface normals after all! Trust me, though, using geometry params and being conscious about matching curve directions is "best practice". But I haven't lofted 'BiArc' curves for awhile, it's late and I want to move on. OH! I just noticed that you reversed the 'Z' direction for one half of the 'BiArc' - that explains it:
Moving on... You've basically got it, though I would do it differently - same result, like this:
I haven't really explained surface normal vectors - can you figure it out from here? One more little wrinkle (Normal_2017Mar17b.gh):
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Added by Joseph Oster at 12:03am on March 18, 2017
ported to Rhino and "set" in Grasshopper, i trim both surfaces from their rectangular bases so that when sDivide is used it creates and distributes the same number of points on each surface.But heres the problems: a) if i use the "trimmed" surfaces with SrfGrid it errors warning: "A point in the grid is null. fitting operation aborted".I'd learned this was caused by "nulls" replacing position Data Items when the rectangular grid(surface base) was trimmed away. So i used Clean Tree which worked removing all nulls, then Shift Paths\Flip Matrix to create line-endpoint pairs for Polyline\Evaluate Curve. I Flattened the last Flip Matrix placing all data items in one source for SrfGrid, like in the working Untrim\CopyTrim definition.This time,.b) SrfGrid errored with: "The UCount value is not valid for this amount of points",.So, i substituted a 356 value, numeric Slider in the Addition B param., and tested its range until a valid UCount was found. Then SrfGrid fitted a surface thru the points, BUT,d) those SrfGrid surfaces are extremely deformed even thought the points preceding it from Evaluate Curve are accurate,SEE: def: "3b-RGH_SurfaceBlend.gh",AND,.a2) if i use Untrim with CopyTrim then SrfGrid works, but since the Jokers limbs WILL be in different surface positions then the blends between the Arm (for example) will rise from its relative FLAT position on the untrimmed Source surface to the Arm on the Target surface, rather than morphing from the Corresponding Arm position on the Source surface,. ..see def.: "4-RGH_SurfaceBlend.gh"So please let me know,..1) how to produce accurate surfaces from SrfGrid in def.: "3b-RGH_SurfaceBlend.gh",. ..(NOTE: BOTH these def's contain 2 indentical, "internalized" surfaces, but if def. 3b can be made to work it will also work with Dis-similar surfaces)2) which component to use or how else to determine the correct UCount value for a specified amount of points(ie:155), re: SrfGrid error: "The UCount value is not valid for this amount of points",.3) how else to force SrfGrid to work with Trimmed surfaces?, AND,..4) how to force intersurface, point-blend correspondence lines: Polylines(PLine) to be connected between correctly! correponding positions (Limbs) on the surfaces?,
Really! appreciate all help, definitions and kind generosity common to this knowledgable membership,
Cheers!,
Jeff…
are invisible in the picture.
So what you see it's a common band that has lost all those characteristics of the original in order to protect the process.
We also did an "invisible setting" prototype which has built in Flexibility.
If you are in the jewelry industry you would know what I mean and it is close to a miracle.
It's a shame I can not share details and this is why I am planning my next major work on something 10 times more complex then this, at least.
It's will be for my own business and for the jewelry industry as well.
I hate to tease people and then not to be able to produce anything more than an image.
But I thought it would be better than nothing, at least for jeweler designers, so they can see that there are more and more users and that complexity it is not something to shy away from, and it's worth the time spent because the returns on production are far larger than for special orders and this is why GH is useful.
We can design a piece of jewelry usually in less then 1 hour, hence GH is not really worth the time.
But for production with so many variables (Finger sizes controlling most of the outcome together with stone sizes etc.) then GH it's a MUST!
I really appreciate everyone's comments and suspicions and I understand why.
99% of the people out there do not really understand the complexity of jewelry at the industrial level. It' s not just form but the post-production that's the killer.
This industry it's still an hybrid of technology and art with, and due to the lack of the old school pros, unfortunately, we face very lousy and unpredictable execution in the post production (after the casting process). This leaves you with a design process and intention that requires a lot of control over every possible variant of the object.
One wrong design aspect it's multiplied thousands of times at the benches (for every single piece) = bad profits!
It sound more serious that it is but very few companies are willing to do so (delivering good product vs low quality and this also happens because the consumer is not longer aware of the difference. So, who does keep quality, it's only because of integrity, third party QA or just pride).
This is way GH is invaluable. This is why that Def looks like out of proportion for that (Visual) simple band.
It is because there are dozens and dozens of variable effecting everything else. In fact it is not even complete as it is in order to cover everything but the most critical ones.
Sorry for the long replays. I am an instructor and a professional jeweler by trade since I was very young and I love to teach, so I overflow with explanations... and Components :)).
Next time it will be "in the open" as they say...…
uments:
1. You are targeting CATIA don't you? (not exactly tomorrow but ... soon) and/or SolidWorks (hello C# haven't we met before?).
2. You MUST deal with nested block instances instead of what you are trying to do right now (I'm talking about the real MERO things not abstract Lines and points). This is not doable with GH components I'm afraid (but it's rather easy with code).
3. You MUST deal with RDBMS in order to keep track with what's going on in your company per project per case per designer (who sells that bolt? what's his cat name? is he a reliable supplier? what I'm doing in life? ... that sort of "queries"). At this point: CATIA is 1% CAD things and 99% PLM stuff (Product Life cycle Management). We do want that since it's 21st century running don't we?.
I hear you: but these are 3 arguments ... indeed but ... hey who's counting? he he.
Method:
A. This def attached has a very simple C# that gets mesh Pts and makes a nice U/V style collection of points (DataTree in plain English).
B. Then we go to that umbrella sticks thingy: we can calculate anything (already the thing does "some") plus your collections of divided points (with the right way, he he) VS a given node: you said (Skype) that you want to calculate angles with these (from 2 to 6) in mind: obvious since you are doing real-life MERO things.
C. Then we could calculate the appropriate Planes for PlaneToPlane transformations: get a nested instance definition (the red things that you've showed to me yesterday) placed at 0,0,0 (Plane.WorldXY) and put in in every Plane collection related with every node (clash defection is an obvious must).
Case resolved, closed: what about that Vodka?
More in Skype
…
merely automates finding clear intersections between pairs of objects and then splits the objects along those intersection *curves*, deletes the trims, then joins the remains, and cycles on. But within the confusing Rhino Settings tolerance value, wherever surfaces actually just sort of come closely together, there *is* *no* clear intersection curve. So it bugs out and stops working EVERY time you try more than a dozen or two spheres.
Some software can do this by switching to volumetric pixels (voxels). $9K-$30K Geomagic Freeform is an example of this. It also fails sometimes, often due to memory issues, as you can imagine since it needs to fill all inner space of each sphere definition with 3D pixels.
Materialize Magics for $16K can often handle such Booleans well. It will take a seeming lifetime to figure out such often pirate software kludges though.
One thing you can try though is to simply drape a mesh or NURBS plane onto the top of your spheres.
There's a well known *reason* your Booleans are failing. Nobody here has yet even hinted at it:
The main reason is that Rhino/Grasshopper developers don't care about the human element. The math exists to make this work very fast, every time. It just has to join things *right*, incorporating human knowledge of kissing surfaces, instead of acting stupidly, like some pocket calculator. But that would involve hacks that make 99% of complex Booleans work instead of 10%, and we can't have that since it will be SLOWER for the other 1% that just happen to have no nearly kissing or really kissing surfaces.
You could also use the new Cocoon plugin to do a surface *around* your structures, with a given radius of extension beyond the spheres, then offset that surface back the same radius. That is 100% robust, but won't offer quite as sharp of intersections, more rounded, like most everybody wants anyway.
You can *test* Boolean failures, by running a Grasshopper intersection command, to see the intersection curves, and zoom in to see how badly many of them are, all knotted, or twisted, or even with gaps, often with gaps.
It's a math problem nobody at McNeel wants to solve, sorry.
Just write a check for $25K and spend six months taking notes, like I did, and you can merge your simple spheres finally.…
Added by Nik Willmore at 6:33pm on October 20, 2015
ther math and logic. i can usually conceptualise what i want to do and cobble some semi working thing together but don't know which components to use and how to patch it. so i'm super happy to have someone who knows what he's doing to find this interesting.
and i'm glad you mention the fanned frets again, there is one input parameter that's still missing for the multiscale frets to be fully parametric, it's the angle of the nut or which fret should be straight. it depends a bit on personal preferences and playing posture what is more comfortable. so being able to adjust this easily would be cool. again i have no idea how the maths for that work or if you can just rotate each fret the same amount around it's middle point. The input either as fret number (for the straight fret) or as a simple slider from bridge to nut should do as input setting.
Here are the two extremes and the middle ground:
i've been thinkin today while analysing your patches and cleaning up my mess what exactly the monster should do.
Here are the input parameters needed, i think it's the complete list
scale length low E string
scale length high e string
fret angle/straight fret
string width at nut
string width at bridge
number of frets
fretboard overhang at nut (distance from string to fretboard bounds)
fretboard overhang at last fret
string gauges
string tensions
fretboard radius at nut (for compound radius fretboard radius at bridge is calculated with the stewmac formula)
fretwire crown width
fretwire crown height
action height at nut (distance between bottom of string and fretwire crown top)
action height at last fret
pickup 1 neck position
pickup 2 middle position
pickup 3 bridge position
nut width
the pickup positions should be used to draw circles for the magnet poles on each string so they are perfectly aligned and can be used for the pickup flatwork construction. ideally they would need a rotation control aligning the center line of the pickup so it's somewher between the last fret angle and bridge angle. personally i do this visually depending on the design i'm looking for, some people have huge theories on pickup positioning but personally i don't believe in it.
that should result in everything needed to quickly generate all the necessary construction curves or geometry for nut/fingerboard/frets/pickups. this is the core of what makes a guitar work, the more precise this dynamic system is the better the guitar plays and sounds.
i posted another thread trying to understand how i could use datasets form spreadsheets,databse, csv to organize the input parameters. What would make sense for the strings for example is hook into a spreadsheet with the different string sets, i attached one for the d'Addario NYXL string line which basically covers all combos that make sense.
The string tension is an interesting one, and implmenting it would sure be overkill albeit super interesting to try. it should be possible to extrapolate from the scale length of each string what the tension for a given string gauge of that string would be so that you could say 'i want a fully balanced set' or 'heavy top light bottom) and it would calculate which SKU from d'addario would best match the required tension. All the strings listed in the spreadsheet are available as single strings to buy.
i'm trying to reorganize everything which helps me understand it. i just discovered the 'hidden wires' feature which is great since once i understood what a certain block does or have finished one of my own, i can get the wires out of the way to carry on undistracted. a bit risky to hide so many wires but it makes it so much easier not to get completely lost :-)
btw, the 'fanned fret' term is trademarked, some guy tried to patent it in the 80's which is a bit silly since it has been done for centuries. there is a level of sophistication above this as well, check out http://www.truetemperament.com/ and that really is something else. it really is astounding how superior the tuning is on those wigglefrets, the problem is that it's rather awkward for string bending and also you can't easily recrown or level the frets when they are used. …
e matching with a dedicated component which creates combinations of items. You can find the [Cross Reference] component in the Sets.List panel.
When Grasshopper iterates over lists of items, it will match the first item in list A with the first item in list B. Then the second item in list A with the second item in list B and so on and so forth. Sometimes however you want all items in list A to combine with all items in list B, the [Cross Reference] component allows you to do this.
Here we have two input lists {A,B,C} and {X,Y,Z}. Normally Grasshopper would iterate over these lists and only consider the combinations {A,X}, {B,Y} and {C,Z}. There are however six more combinations that are not typically considered, to wit: {A,Y}, {A,Z}, {B,X}, {B,Z}, {C,X} and {C,Y}. As you can see the output of the [Cross Reference] component is such that all nine permutations are indeed present.
We can denote the behaviour of data cross referencing using a table. The rows represent the first list of items, the columns the second. If we create all possible permutations, the table will have a dot in every single cell, as every cell represents a unique combination of two source list indices:
Sometimes however you don't want all possible permutations. Sometimes you wish to exclude certain areas because they would result in meaningless or invalid computations. A common exclusion principle is to ignore all cells that are on the diagonal of the table. The image above shows a 'holistic' matching, whereas the 'diagonal' option (available from the [Cross Reference] component menu) has gaps for {0,0}, {1,1}, {2,2} and {3,3}:
If we apply this to our {A,B,C}, {X,Y,Z} example, we should expect to not see the combinations for {A,X}, {B,Y} and {C,Z}:
The rule that is applied to 'diagonal' matching is: "Skip all permutations where all items have the same list index". 'Coincident' matching is the same as 'diagonal' matching in the case of two input lists which is why I won't show an example of it here (since we are only dealing with 2-list examples), but the rule is subtly different: "Skip all permutations where any two items have the same list index".
The four remaining matching algorithms are all variations on the same theme. 'Lower triangle' matching applies the rule: "Skip all permutations where the index of an item is less than the index of the item in the next list", resulting in an empty triangle but with items on the diagonal.
'Lower triangle (strict)' matching goes one step further and also eliminates the items on the diagonal:
'Upper Triangle' and 'Upper Triangle (strict)' are mirror images of the previous two algorithms, resulting in empty triangles on the other side of the diagonal line:
…
lla progettazione parametrica e le tecniche di modellazione algoritmica per la generazione di forme complesse
___________________________________________________________________________________
luogo:
Sala meeting Hotel Mercure Milano Centro Piazza Oberdan 12 – 20129 MILANO
Scadenza iscrizioni: 12 Novembre 2011 – ore 15.00
___________________________________________________________________________________
info e prenotazioni:
Le Penseur (coordinamento formazione)
info@lepenseur.it
081 564 21 84
347 548 71 78
quote di partecipazione e programma (formato PDF)
ulteriori informazioni sui corsi PLUG > IT
___________________________________________________________________________________
PROGRAMMA DEL CORSO
GIORNO_01
10.00 – 10.30: presentazione workshop
10.30 – 11.30: introduzione alla progettazione parametrica: teoria, esempi, casi studio
11.30 – 13.00: Grasshopper: concetti base, logica algoritmica, interfaccia grafica
13.00 – 14.00: break | lunch
14.00 – 16.00: nozioni fondamentali: componenti, connessioni, data flow
16.00 – 18.00: esercitazione
GIORNO_02
10.00 – 12.00: funzioni matematiche e logiche, serie, gestione dei dati
12.00 – 15.00: analisi e definizione di curve e superfici
GIORNO_03
10.00 – 12.00: definizione di griglie e pattern complessi
12.00 – 13.00: trasformazioni geometriche, paneling
13.00 – 14.00: break | lunch
14.00 – 16.00: esercitazione
16.00 – 18.00: attrattori, image sampler
GIORNO_04
10.00 – 13.00: data tree: gestione di dati complessi
13.00 – 14.00: break | lunch
14.00 – 15.00: digital fabrication: teoria ed esempi
15.00 – 18.00: nesting: scomposizione di oggetti tridimensionali in sezioni e posizionamento su piani di taglio per macchine a controllo numerico CNC…