Pitched roofs

Hi,

I have created a site model on rhino full of rectangular box's representative of the surrounding context to my building.

I want to put pitched roofs on each of these rectangles

So far I have managed to get the bottom x,y planar curve of each of these box's.

And using the center point of these polygons, and using Brep intersect with line command, I have managed to get two point representative of the individual heights of these rectangles.

What I can't seem to do next is use these points as a vector to move the planar curve to the top of the rectangles. So I can start building the roof.

And what I have no idea how to do, is to create a pitched roof, typically representative of suburbian roofs, So instead of extruding to a point, it extrudes to a pitch

This isn't the most interesting use of Grasshopper, but it gets the job done, so very much faster... If I can get it done :(

Attachments:

Pitched roof definition 002.gh, 17 KB
Untitled-1.jpg, 118 KB

Replies to This Discussion

Permalink Reply by Mal Bas on October 17, 2012 at 8:02pm

Never mind. I worked out how to do part one

Permalink Reply by Mal Bas on October 17, 2012 at 8:44pm

Ok so i used this definition to make the pitched roofs,

But I can't understand how to make it work when i'm referencing in 130 rectangles..

Could love some help, please.

http://www.grasshopper3d.com/forum/topics/extrude-tapered-weird-output

Permalink Reply by Mihutescu Ovidiu on November 3, 2012 at 8:18am

Hy,

How did you created the pitched roof? I'm struggling here and nothing. Help would be appreciated!

Permalink Reply by djordje on November 3, 2012 at 7:21pm

Is this what you want:

I think I made a couple of mistakes, like: "eaves length" is in fact "eaves width", ridge length might be incorrect two, but I think you will get the picture.

Attachments:

roof.gh, 14 KB
roof.3dm, 153 KB

Permalink Reply by Mal Bas on November 5, 2012 at 9:37am

Wow. cool. thats awesome

Permalink Reply by Guillaume Vanderveken on April 6, 2015 at 8:36am

HI djordie,

Old topic but I have just tried your file and it comes up with with result not expecte. Either it create only one pitched roof eventhough I did a multiple selection or worst it creates a planar surface on top of the rectangular prism. I am using your example files as well as other files or mine. same result. Any idea what it can be ?

I am using the latest version of grasshopper and rhino 5.

Thanks a lot.

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