Split a Revolved Surface - Grasshopper2024-03-29T12:48:59Zhttps://www.grasshopper3d.com/forum/topics/split-a-revolved-surface?commentId=2985220%3AComment%3A1807221&feed=yes&xn_auth=noIts the seams, happens often…tag:www.grasshopper3d.com,2017-08-31:2985220:Comment:18072212017-08-31T22:13:44.664ZMichael Pryorhttps://www.grasshopper3d.com/profile/MikePryor
<p>Its the seams, happens often with spheres also. Even just in rhino things get weird if you say.. try and draw a curve on surface across the seam - it usually wants to go the opposite direction. </p>
<p>Its the seams, happens often with spheres also. Even just in rhino things get weird if you say.. try and draw a curve on surface across the seam - it usually wants to go the opposite direction. </p> thanks Joseph,
I always have…tag:www.grasshopper3d.com,2017-08-31:2985220:Comment:18070942017-08-31T22:11:15.526Zmartyn hogghttps://www.grasshopper3d.com/profile/martynhogg427
<p>thanks Joseph,</p>
<p>I always have issues with revolved surfaces!</p>
<p>thanks Joseph,</p>
<p>I always have issues with revolved surfaces!</p> Simplified:
tag:www.grasshopper3d.com,2017-08-31:2985220:Comment:18068102017-08-31T01:28:09.527ZJoseph Osterhttps://www.grasshopper3d.com/profile/JosephOster
<p>Simplified:…</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769319858?profile=original" target="_self"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2769319858?profile=RESIZE_1024x1024" width="721"></img></a></p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769319834?profile=original" target="_self"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2769319834?profile=original" width="675"></img></a></p>
<p>Simplified:</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769319858?profile=original" target="_self"><img width="721" src="http://storage.ning.com/topology/rest/1.0/file/get/2769319858?profile=RESIZE_1024x1024" width="721" class="align-full"/></a></p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769319834?profile=original" target="_self"><img src="http://storage.ning.com/topology/rest/1.0/file/get/2769319834?profile=original" width="675" class="align-full"/></a></p> Good call Ethan. That revolv…tag:www.grasshopper3d.com,2017-08-30:2985220:Comment:18067482017-08-30T23:58:46.246ZJoseph Osterhttps://www.grasshopper3d.com/profile/JosephOster
<p>Good call Ethan. That revolved ellipse was a nasty surface!! NOTHING would intersect with it. Even with Ethan's fix, it's still not a "Closed Brep" so I'm surprised that 'SDiff' works. Here is a 'SrfSplit' approach, one of several intersection methods that all failed with the original 'RevSrf'. It has a test sphere in addition to the ellipse.…</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769319920?profile=original" target="_self"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2769319920?profile=RESIZE_1024x1024" width="721"></img></a></p>
<p>Good call Ethan. That revolved ellipse was a nasty surface!! NOTHING would intersect with it. Even with Ethan's fix, it's still not a "Closed Brep" so I'm surprised that 'SDiff' works. Here is a 'SrfSplit' approach, one of several intersection methods that all failed with the original 'RevSrf'. It has a test sphere in addition to the ellipse.</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769319920?profile=original" target="_self"><img width="721" src="http://storage.ning.com/topology/rest/1.0/file/get/2769319920?profile=RESIZE_1024x1024" width="721" class="align-full"/></a></p> Thanks Ethan!
Good reminder o…tag:www.grasshopper3d.com,2017-08-30:2985220:Comment:18064992017-08-30T21:17:52.593Zmartyn hogghttps://www.grasshopper3d.com/profile/martynhogg427
<p>Thanks Ethan!</p>
<p>Good reminder of the Shatter component too!</p>
<p>Thanks Ethan!</p>
<p>Good reminder of the Shatter component too!</p> Hi Martyn,
It might have some…tag:www.grasshopper3d.com,2017-08-30:2985220:Comment:18064932017-08-30T21:01:17.209ZEthan Grosshttps://www.grasshopper3d.com/profile/ethangross
<p>Hi Martyn,</p>
<p>It might have something to do with the seam orientation so I instead swung a half-ellipse around 2 Pi, so the seam is totally within the box. Also, I and others on this forum have had problems with splitting conics and surfaces based on conics. Too few control points???…</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769319006?profile=original" target="_self"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2769319006?profile=RESIZE_1024x1024" width="721"></img></a></p>
<p>Hi Martyn,</p>
<p>It might have something to do with the seam orientation so I instead swung a half-ellipse around 2 Pi, so the seam is totally within the box. Also, I and others on this forum have had problems with splitting conics and surfaces based on conics. Too few control points???</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769319006?profile=original" target="_self"><img width="721" src="http://storage.ning.com/topology/rest/1.0/file/get/2769319006?profile=RESIZE_1024x1024" class="align-full" width="721"/></a></p>