Learn Dynamo - Lesson 9: Points & Lines

[@denitsas_simulation]

The best explained dynamo tutorials ever :) I'm gonna include this into my morning routine. Thank you!

[@AussieBIMGuru]

You're welcome Denitsa! I feel flattered to be in someone's routine haha

[@daniyaalmaneveld3779]

Hi! I hope you are doing well. How do I turn lines into model elements? So a common issue we have is where we get a steel structure from the client in Revit, then we run FEA in Strand 7 which gets us a dxf file of the updated model which is termed TOS (Top of Steel) - I have gotten so far as to import the TOS model which are lines into Dynamo but how do I turn the lines into steel members once again? Your help will be greatly appreciated.

[@AussieBIMGuru]

Use the line/curve to guide the placement of a beam. There should be a node in Dynamo for this which uses a curve as the base and needs a structural framing type/host level also.

[@arifrahman5571]

Hallo gavin, you very good, can i ask you qustion, how we get point/coordinate form an existing element? and how to extrude an element/surface that is slanted upwards? thankyou

[@AussieBIMGuru]

I have a video on coordinates here: kzbin.info/www/bejne/i6KWn3SEoZtgoacfeature=shared For extruding at an angle the easiest way would be to consruct the top/bottom profile and use a Loft between profiles node.

[@cheemengng6618]

Hi! How do I create a space frame line (WireSpaceTruss) in a curved spiral direction instead of a horizontal line? Hope you can provide some solution on this. Thank you!

[@AussieBIMGuru]

Spirals are generally mathematically generated using trigonometry, see the primer for an example: primer.dynamobim.org/04_The-Building-Blocks-of-Programs/4-2_math.html I'm not overly familiar with this specific application so it may be worth having a try and then consulting the dynamo forums for help when you get stuck.

[@BloominOnion1]

very cool, thanks

[@AussieBIMGuru]

You're welcome!

[@jskbim]

if can u get point coordinate from the existing geometry ?

[@AussieBIMGuru]

Yes you can either try to get the centroid of its solid geometry or its location if it is a point. Not all objects represent themselves using a point, e.g. walls use a line. You would need to transform the coordinates by the difference between the internal origin's NS/EW values and the rotate of true north to get the actual coordinates (it is not an easy process).

[@otdosa]

why is it that if i get the start point of a wire vs choosing it with the keyboard as input - the coordinate systems are scaled? i.e. the point i give as input needs to be scaled down 304.8 times.

[@AussieBIMGuru]

It sounds like the node might have a bug where it isnt being converted to the local coordinate system for the picking of points. 304.8 is the rounding factor from feet (revit internal units) to mm.

[@otdosa]

@@AussieBIMGuru damn, never thought of that. it is the ootb Select Point on Face node. in a way it is good that the scale factor makes sense, i was fearing it would vary from project to project.

[@sadamth6714]

are these nodes enough to learn dynamo from this series to achieve all the things in the Revit?

[@AussieBIMGuru]

Of course not, that can only be taught through practice and experience/time, even I dont know all the nodes. There's a lot of depth to dynamo and 100's of nodes. My content gives principles to build on. This is a pretty old course now, I have more thorough one here: courses.bimguru.education/

[@abhijittalukdar626]

I couldn't find the 'Grid count ' slider node. Which package is this from?

[@AussieBIMGuru]

I believe this was just a renamed integer slider.

[@jskbim]

hi is there point by clicking in the view ?

[@AussieBIMGuru]

Unfortunately not, as the mouse is not relative to a point in space. Maybe look into the mouseRat extension for Grasshopper/Rhino as a reference for how this could be done however.

[@jskbim]

@@AussieBIMGuru thanks

[@BedirxanUgur]

Excellent !

[@AussieBIMGuru]

Thanks Bedirhan :) Great to see you're staying up to date on the series - MVP!

[@ancadospel4786]

I still need to wrap my head around the logic of geometry generation. I would have assumed that on a square grid, a 0.5, 0.5 attractor point would generate a "conical" surface,where all the boundary points would have the same z height. However, for some reason the shape is more of a wave-like triangular prism, where the border point' z coordinate varies and I cannot figure out why is that happening.

[@AussieBIMGuru]

If you picture slicing a cone as it goes downwards, the points would actually need to be circular to generate a perfect cone. The reason why you get a stepped pyramid of sorts is because the grid is rectalinear. If you array a row of points in a circle then set that centrepoint as the Z attractor you would end up with a conical outcome.

[@m.p.danial3173]

The issue is with how RemapRange deals with the list. If you flatten the list before feeding it into RemapRange and chop it after (get the number by using a count node for x or y-coordinates) you will get the conical surface. OR simply remove your RemapRange and the conical section appears in the right form, BUT not in the right height. I played with levels, lacing, ... but flatten-chop seems to work.

[@mavs013]

I believe this video is by far the most useful video，at least it's one of them to me.I wonder why there are only 12 comments.By the year 2018，when I first get into dynmo，I just don't know how to get the geometry generated by dynamo into Revit.Cause it's not like grasshopper in rhino，when you bake，the job is done.So when I found the video of just get the location of points and use these locations to generate adaptive components,it totally help me a lot.Here is the link of that video. kzbin.info/www/bejne/hISTe5Wlhd2UbZo.

[@AussieBIMGuru]

Generally KZbin series don't seem to get good traffic in my experience, people stop watching after 1 or 2 videos. No problems though, glad it helps those who persevere!

[@sampathkoteswararao7305]

Hey you have to do in front of us from starting to end then only others can understand MF don't show and explain already you are done with script

[@AussieBIMGuru]

The goal with this series isnt to show how to place all the nodes one at a time (part 1 shows that). I've got a lot of start to finish tutorials on my channel also if you prefer that style of learning though.