Wind + Gravity - Grasshopper2024-03-29T15:32:38Zhttps://www.grasshopper3d.com/forum/topics/wind-gravity?groupUrl=kangaroo&commentId=2985220%3AComment%3A154155&groupId=2985220%3AGroup%3A120977&feed=yes&xn_auth=noHello,
I am new on Grasshoppe…tag:www.grasshopper3d.com,2019-04-21:2985220:Comment:19805132019-04-21T17:15:17.604ZNecmettinhttps://www.grasshopper3d.com/profile/Necmettin
<p>Hello,</p>
<p>I am new on Grasshopper and I think, this definition is old. How can I convert this? Can you upload new version of definition please?</p>
<p>Hello,</p>
<p>I am new on Grasshopper and I think, this definition is old. How can I convert this? Can you upload new version of definition please?</p> Perlin noise is probably from…tag:www.grasshopper3d.com,2017-02-27:2985220:Comment:17011982017-02-27T10:16:34.590ZGiulio Piacentinohttps://www.grasshopper3d.com/profile/GiulioPiacentino
<p>Perlin noise is probably <a href="http://www.food4rhino.com/app/4d-noise" target="_blank">from this component</a> set. Kangaroo might have been in the 1.0 version, not the later 2.0 version.</p>
<p>Giulio<br/>--<br/>Giulio Piacentino<br/>for Robert McNeel & Associates<br/>giulio@mcneel.com</p>
<p>Perlin noise is probably <a href="http://www.food4rhino.com/app/4d-noise" target="_blank">from this component</a> set. Kangaroo might have been in the 1.0 version, not the later 2.0 version.</p>
<p>Giulio<br/>--<br/>Giulio Piacentino<br/>for Robert McNeel & Associates<br/>giulio@mcneel.com</p> Hi I am relatively new to gra…tag:www.grasshopper3d.com,2017-02-25:2985220:Comment:17002682017-02-25T16:44:45.628ZCharles Sowershttps://www.grasshopper3d.com/profile/CharlesSowers
<p>Hi I am relatively new to grasshopper and am trying to do a similar thing to the above. I just tried your definition and grasshopper cannot parse all the components and plug-ins needed. I have the latest Kangaroo(2.2.1) but grasshopper doesn't recognize the components in your definition. Where does perlin noise come from? In short how could I do this today? What do I need for it to work?</p>
<p></p>
<p>Thanks</p>
<p>Hi I am relatively new to grasshopper and am trying to do a similar thing to the above. I just tried your definition and grasshopper cannot parse all the components and plug-ins needed. I have the latest Kangaroo(2.2.1) but grasshopper doesn't recognize the components in your definition. Where does perlin noise come from? In short how could I do this today? What do I need for it to work?</p>
<p></p>
<p>Thanks</p> Cool!tag:www.grasshopper3d.com,2011-01-29:2985220:Comment:1542052011-01-29T02:48:35.112Ztazhttps://www.grasshopper3d.com/profile/taz
Cool!
Cool! Nice combo! And yes, not too…tag:www.grasshopper3d.com,2011-01-28:2985220:Comment:1541592011-01-28T22:54:49.940ZLuis Fraguadahttps://www.grasshopper3d.com/profile/LuisFraguada
Nice combo! And yes, not too shabby!
Nice combo! And yes, not too shabby! Here's the definition.tag:www.grasshopper3d.com,2011-01-28:2985220:Comment:1541552011-01-28T22:45:50.672ZDaniel Pikerhttps://www.grasshopper3d.com/profile/DanielPiker
Here's the definition.
Here's the definition. Nice, seems like a decent way…tag:www.grasshopper3d.com,2011-01-28:2985220:Comment:1541522011-01-28T22:45:13.333ZLuis Fraguadahttps://www.grasshopper3d.com/profile/LuisFraguada
<p>Nice, seems like a decent way to go... thanks for the suggestion.</p>
<p>Somehow all of us decided to hang in for the Fri night, Giulio, if Daniel was in town, I'd say lets go get a beer, but alas, its Raining in BCN!</p>
<p>Nice, seems like a decent way to go... thanks for the suggestion.</p>
<p>Somehow all of us decided to hang in for the Fri night, Giulio, if Daniel was in town, I'd say lets go get a beer, but alas, its Raining in BCN!</p> Yes that works pretty well!
tag:www.grasshopper3d.com,2011-01-28:2985220:Comment:1541502011-01-28T22:42:56.436ZDaniel Pikerhttps://www.grasshopper3d.com/profile/DanielPiker
<p>Yes that works pretty well!</p>
<p><a target="_self" href="http://storage.ning.com/topology/rest/1.0/file/get/2768638493?profile=original"><img class="align-full" width="300" src="http://storage.ning.com/topology/rest/1.0/file/get/2768638493?profile=original"/></a></p>
<p>Yes that works pretty well!</p>
<p><a target="_self" href="http://storage.ning.com/topology/rest/1.0/file/get/2768638493?profile=original"><img class="align-full" width="300" src="http://storage.ning.com/topology/rest/1.0/file/get/2768638493?profile=original"/></a></p> Perlin noise is often used to…tag:www.grasshopper3d.com,2011-01-28:2985220:Comment:1541332011-01-28T21:45:33.061ZGiulio Piacentinohttps://www.grasshopper3d.com/profile/GiulioPiacentino
<p>Perlin noise is often used to give the effect of smooth but random variations in wind.<br/>Maybe you could try using a Perlin-noise-based vector field?</p>
<p>- Giulio<br/>_____________</p>
<p>giulio@mcneel.com<br/>McNeel Europe, Barcelona</p>
<p>Perlin noise is often used to give the effect of smooth but random variations in wind.<br/>Maybe you could try using a Perlin-noise-based vector field?</p>
<p>- Giulio<br/>_____________</p>
<p>giulio@mcneel.com<br/>McNeel Europe, Barcelona</p> From what I can see in that v…tag:www.grasshopper3d.com,2011-01-28:2985220:Comment:1541262011-01-28T21:38:12.205ZDaniel Pikerhttps://www.grasshopper3d.com/profile/DanielPiker
<p>From what I can see in that video it looks to me like the shingles themselves have a very simple action (they are blown up by wind and fall back down with gravity), and really all the interesting part of the effect comes from the variations in airflow across the surface.</p>
<p> </p>
<p>Maybe you could look at getting a vector field for the wind in from some CFD program, then you could have each flap be affected by the closest vector. Of course you really need a time varying vector field,…</p>
<p>From what I can see in that video it looks to me like the shingles themselves have a very simple action (they are blown up by wind and fall back down with gravity), and really all the interesting part of the effect comes from the variations in airflow across the surface.</p>
<p> </p>
<p>Maybe you could look at getting a vector field for the wind in from some CFD program, then you could have each flap be affected by the closest vector. Of course you really need a time varying vector field, which is trickier. You could perhaps import a static solution and add random time variation (though this should probably be somehow weighted more heavily in more turbulent regions).</p>
<p> </p>
<p>I have been thinking to add a very simple wind force (similar to how pressure works now, but just projecting a wind vector onto the normal of the triangle and multiplying by the area). This wouldn't take care of what the wind vector should be, but it should allow things like flapping flags.</p>
<p>If I had a few months(maybe years) to dedicate purely to it I'd love to have a go at implementing actual real-time 3d fluids in Kangaroo, but I doubt that's ever going to happen!</p>