Hello everyone, I’m trying to create a file, which gives me a 3 dimensional shadow of buildings. Atm I don’t care if it’s a Point Cloud, mesh or brep. I want a geometry which representates 3D areas behind buildings which aren’t or are less exposed during the whole year. Tried it with “Mesh Ray” co…

Plenty … but there is some bad news around as well (C# code only, sorry). Notify if you want a demo (as simple as possible) . See a classic Waldram analysis on that matter using SOM’s big thing in Dubai. (A hint : you can use Trim (Breps VS a solidShadow). That retains portions of BrepFaces that are…

Thank you very much Peter, but still not what I’m looking for :see_no_evil: Or at least I think so, if I understand what you did there. If I get it wrong please excuse me. [shadow5] Hope this clearifies it a bit. If nobody has an idea, no problem, me too :smiley:

Sorry I don’t have anything to suggest, but are you looking for the region of shadow - the volume that will cast a shadow on anything inside? I think that’s the confusion.

Oh ok, yeah I want the volume which is casted by the shadow ( middle geometry in my last post) So for example, in the end, I want to do this for one day. And than Analyse which 3d area gets least sunlight. For example, this is done with 4 vectors creating the “3d shadow” and than it’s analysed how…

I made a slight adjustment to my original file to now output lines inside the shadow volume instead of points on the shadow surface. I don’t know if it’s going to be helpful to you, but it was an easy modification. Do note that I do not handle the case well where the catcher geometry is inside the c…

Well, since I opened my mouth, I felt obliged to give it a try myself. I’m using a python component I had downloaded from the old site to split breps with a plane so I hope it makes it through safely. [Canvas at 06;13;51] Shadow volume.gh (18.4 KB)

This reminded me of a set of famous renderings by the architectural draftsman Hugh Ferris, who composed a series of studies demonstrating the envelopes of new structures created by New York’s 1916 zoning law. The law was intended to prevent skyscrapers from depriving the streets below of all light b…

Ok thank you both for your help. Both is working really good. Just the solid operation will take really long on many buildings over a long period of time. Made with David’s solution. Lines are divided and than points colored by distance to it’s neighbours. [shadow7] Made with Ethan’s solution: …

Yeah his work is really nice. I didn’t thought about preventing, it’s more about recompression. Where are really bad sun exposed spots where you can build somthing that doesn’t require much light and threw that doesn’t shade the existing buildings to much.

[image] tim.stark: but still not what I’m looking for Well, Waldram analysis has not in mind solid shadow volumes (so to speak) But … I could add some lines of code more in order to get solid shadows exactly as you want … but since you are OK with points (BTW: To do what with these exactly?)…

3D shadowed area - what's the best way?

Grasshopper

sato (Adrian Galeazzi) January 17, 2018, 6:48pm 24

Grasshopper nearly crashed
hum…Definetely not that fast ^^

[EDIT]
oops…

How can I measure the shadow excerted by balconies onto other balconies?

Topic		Replies	Views
SHADOW STUDY Equivalent- How to generate shadow outline surfaces from multiple brep inputs Grasshopper	3	1098	March 26, 2024
Solidifying Shadows Grasshopper	5	1199	October 31, 2018
Can you measure the volume of a rendered shadow? Rhino for Windows	1	731	November 15, 2017
Grasshopper shadow area calculation Grasshopper	2	2336	March 23, 2018
Calculating surface area of shadow casted from an object to another one Grasshopper mac , shadows	4	219	April 13, 2025

3D shadowed area - what's the best way?

Related topics