in rhino 8 wip, there was the constraints command.
In the stable version, i cannot find this option.
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Yes because it is not a finished product yet. So development will continue for V9 there is still much to do. So if you have a V8 license soon you will be able to download and test V9 WIP.
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so we are talking at least 2-3 years before v9 Stable will be released to have constraints option.
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No, it should be available in the soon to be released V9 WIP. You will need to have a paid license of V8 to use it though.
McNeel is saying there arenāt/havenāt been enough users of the feature to give feedback on development, which is a bit why it is in limbo.
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Also I can say itās best this way.
Constraints need more dev time.
Rhino 8 new features and details needs to be fixed and cleaned up.
Prematurely releasing constrains would leech dev time from more important stuff that have priorityā¦
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Agreed!
Constraints existed in AutoCAD for a decade. They never became mainstream (at least in AEC) thatās why we need to make it so good to convince people of using it.
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AECā¦ Everyone is using Revit and constraints arenāt convincing?
The truth is that people are too lazy to learn new thing and you have to force themā¦
Did you now that meme of man pushing a square wheel and another suggesting to change it with a circular one?!?!
Revits Constraints are part of bigger and more complex feature set called āParametricsā it contains
1- positional constraints and parameters
2- reporting parameters
3- visibility parameters
4- parametric labels
5- project and shared parameters
7- relationship expressions and conditional statements
8- ability of nesting families (blocks) and controlling size, shape and visibility from the host file.
9- scheduling and tabulations of categories, quantities and parameters.
Revit is an example of a successful implementation of constraints. And it shows that most of the architects who graduated in the last 20 years feels very comfortable navigating through that space.
Iād also argue that revit is too constrained for what rhino can do. For example it has no constraints support for splines , eleptical shapes and forms . Unexpected results with radial and rotational constraints and impossible support for ruled surfaces.
looking forward to it 
Itās somewhat unfortunate that Riccardo posted a link to my post further up in this thread, and not the thread that I linked to in that other thread.
The point is that, unless users provide real examples where a constraints function would be useful, this is not something that is going to be worked on in the foreseeable future. Constraints is not in the Rhino 9 WIP that I am running.
-wim
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Well, Iāve been thinking lots about this during the majority of this year. And Iād say that my approach for now will be in attempt to implementing GH the best I can to try gaining some parametric control for pretty much even just the ābasicsā for now.
See, from my perspective GH has become a epiphany of a āparametricā approach, but itās missing the most basic and most intuitive approach (imo), from the standpoint of āparametric solid modelingā ā that, imo, most of the āparametric solid modelersā (in the world) are accustomed to.
So, Iāll be ābeginning at the beginningā per say, and doing whatever I can to basically simulate how I think āparametric solid modelersā would approach certain problems, starting with the very basic ones.
Over time I might develop a workflow that becomes compromised into some type of hybrid.
Depending on what GH has to offer, etc., weāll see whatās possible.
This is interesting:
It sounds weird: how we can tell you if this is good or not if we canāt try it?
Itās too overlapping with bongo Ik?
Yes if you look to architect they would tell you is pointless like they did with parametric cads for decadesā¦ But now now one can live without Revit.
Give to product designer a good sketcher, with nice Constraints and ik and you will see applications growing like plants.
Constraint best fan
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