Thanks a lot for the informative tutorial. A few things, however.
I was unable to get Step01_9 to work. When I would plug the Normals from the Eval into the Offset object, the end result was a positive extrusion, which extruded the surfaces the wrong direction, to the inside of the overall shape. I eventually simply plugged the random object directly into the offset, which resulted in the same issue, the offset would inevitable be in the wrong direction. I changed the random range to -1 to 0 and the offset reversed itself. I could not, however, get this to work with the normals from the evaluation of the SubSrf.
The other issue was at the end when you used a Graft. I was able to get the result without using any grafts, simply eliminating that step. Could you let me know what the graft does in your tutorial and why it is important?
One more thing (sorry to take so much time). In your other tutorial, you regularly connected multiple individual curves into the “Join Curves” object. When I attempted to duplicate this, it would only allow me to connect one curve or the other, thus not allowing me to finish your more advanced tutorial.
Again, thanks for writing these, they really help augment one’s understanding of Grasshopper and Geometry creation.
Sorry not responding. That is because you did not set the offset vector reversed. Right click on ‘D’ tap on the offset object, and type in ‘-D’, which will flip the offset vector. That is the reason for all subsequent problems. And if you want to connect more than one input, just hold down shift key while you connect each piece.
Thank you for the tutorial its pretty amazing. The issue i am having is at the last step when i connect the 8 list items to the twisted box, all the list items except for one turn red. What i dont understand is how does list item know which vertex to use since we didnt really give it any instruction? I understand what you are attempting, to get the four vertices from the original extruded surface to connect for lack of a better word to the 4 offset vertices and form a box, but its not working for me. Any help would be greatly appreciated.
I’m having trouble with step 1_06. The points are flexing according to the reference points. The Merge is feeding in the information of the grid but when I go to connect the number of U from the U slider the SurfGrid goes red. I set the expression and made (I) true as specified. What else to do since the number of U comes from that slider and the SurfGrid is saying it is recieving 1 number (21); since my slider is on 20.
I have decoposed points and then compose again. In between I have made boolean with z component equal 0 and after this I have split the list. I hope it’ll work with rest of tutorial but for now it wokrs the same (base is out of the list).
Anyway does anybody know what was the problem? – Why points has been selected in vertical direction ?
Excellent posting. You’re beyond doubt an expert when it comes to this writing. It is just the first time I visited your site and frankly speaking it succeeds in making me visit here time and again.And yes i have digg your site woojsung.com .