I’m trying to create a revolve by using “PolyCurve.ByPoints” as the Profile input for “Solid.ByRevolve”.
But I can’t get the Points input right! I’ve tryed sliders, numbers and points (pt1, pt2, …) in code blocks but they do not work. Still get a “Run completed with warnings” notification.
First of all I’m trying to get a simple revolve going. With 4 points.
The reason behind this is that I have to create round foundations with different height and diameters.
I want to create an excel sheet with the measurments and from that I want to calculate the points I need for the revolve profile. And for some foundations I need 4 points and for others I may need 6 or 8 points.
I want do those calculations in Dynamo… but first I need to know what the input needs to be for the “PolyCurve.ByPoints” And is that the best way to make a revolve and have it sent to Revit?
Can someone show me a small very simple example of how to make a revolve in Dynamo?
(I know that the “sweepAngle” should be 360 for a complete revolve. I’m just “playing” a bit to see how it works)
I’ve used the example from the dictionary and calculated the points, but the result is not what I need.
The NurbsCurve is…wel… curved! Hahahahaha (see picture). And I need straight lines from point to point.
Can that be done in this way Or do I need to construct it with the node “Surface.ByRevolve” and then somehow create a solid from the surface?
Hmmmm…okay. It’s not the “Solid.ByRevolve” that’s the problem. It’s the “NurbsCurve.ByPoints” that’s causing it.
Now I used “Polygon.ByPoints” and that gives me the profile I need but this creates an Sweep_Illegal_Surface.
What node can I use that would give me the correct profile form the sweep I need?
I’ll look into those sample again to see if I missed anything.
But what I don’t get is why is it simple to create a complex curved form in Dynamo and by using points, while it’s so hard to use the same points and create straight lines and use that as a profile? I need a node “profile.ByPoints” instead of “NurbsCurve.ByPoints” to get my revolve.
Here’s the form/profile I need. But this one gives me an Illegal_Surface error.
That’s close. But you are creating a “donut”. I need a solid and closed revolve from the centre outward.
Now I tried it with “Polygon.ByPoints” and “PolyCurve.Curves” And I atleast get the basic (hollow) shape I need.
Also my Axis origin is 0. You have an ofset of 10.
And Why do you have the input “ConnectLastToFirst” set to 1?
Isn’t a boolean a True or False?
Okay…I found the problem!
It is the AxisOrigin after all! The AxisOrigin is not allowed to be on the same line as the profile!
When I give it an offset of -1 my form works! But that means I have a hole in my structure! That’s not what I want.
Any thoughts on how to get a solid revolve with no offset?
WHahahahaha…That’s it! I was thinking about the way it is done in Revit.
There a revolve must have a closed profile in order to work.
However…it still is hollow correct? Or is it because I haven’t put the revolve to 360 degress?
Or will this become a solid once I’ve placed it in Revit?
Tryed both options and both stil not the one I need.
Your second option is the closest but it doesn’t allow a complete 360 degree.
Start and end are not allowed to be in the same place.
And your first option is overpalling forms…? If I see that correctly? Some part is still hollow and the other part is not.
I could take your second option and create 2 solids both at 180 degrees and join them, but If I can create a solid 360 degree revolve in Revit…then it must also be possible in Dynamo right?
That’s what I also was thinking (see my previous comments) but I want to use this form also to add rebar.
And I don’t want to mirror everything. Or will Dynamo see it as a single solid form once the 2 halves are joint?
But the point remains: Why is it hard to create this revolve that is easely done in Revit?
Hahahaha…and no…I don’t wanne do it in Revit because I still need to add 3D rebar to this model and my crosssection depends on the excel sheet. In my examples above I have 8 points but I have 3 versions (5pts, 7pts and 8pts). So This part is only somewere in the beginning of my script. I have to figure out something with If and els in front of this part above.
And my 3D rebar behind it. But first things firts: getting the form right.
Done that (still have to cheat when creating one half: startangle=0 endangle=180.1) but when I klick on the “Solid>ByUnion” node the outline only one half lights up in blue. That doesn’t give me a good feeling.
But If you say it wil be interpreted as one solid I take your word for it!
it’s just faster this way …
?
