topic Re: Render trick with spheres in 3D Part & Assembly Design https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107970#M56156 <HTML><HEAD></HEAD><BODY><P>I believe this is because Creo is trying to impose, that the full revolve is only one surface (while the internal mathematics always need two, to close the surface). So when you select one of the two half surfaces and apply the color, it gets applied to the other as well by Creo.</P><P></P><P>As it seems this little "fake" has not been implemented to deal with mirror or redefinition of partial revolves. I agree, that it could happen to be "fixed" some day (although I assume chances are low as is the priority).</P><P></P><P>Even Editing &gt; Split Surface (with the option to select contours automatically) creates a "similar instable situation", i.e. it applies the original color to the second side, but when you try to apply a different color to either half, the full surface gets colored again.</P></BODY></HTML> Thu, 24 Jul 2014 14:42:18 GMT gkoch 2014-07-24T14:42:18Z Render trick with spheres https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107967#M56153 This is a Creo 2.0 M040 part. There is no reason to believe this will work on future releases as it is likely a bug.But... for the meantime, I found a way to change the color of half a sphere with basic Creo render. If you ever -tried- to do this you know what a pain it can be.The Fri, 04 May 2018 15:51:17 GMT https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107967#M56153 TomD.inPDX 2018-05-04T15:51:17Z Re: Render trick with spheres https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107968#M56154 <HTML><HEAD></HEAD><BODY><P>Mirror works too. Revolve 180 degrees, assign a color to the solid body, then a color to the hemisphere. Mirror that across the sketch plane you used, and it looks exactly the same as the way you showed in the video (just in case future releases fix this, if it is a bug).</P></BODY></HTML> Wed, 23 Jul 2014 19:45:15 GMT https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107968#M56154 DaltonF. 2014-07-23T19:45:15Z Re: Render trick with spheres https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107969#M56155 <HTML><HEAD></HEAD><BODY><P>That's good to know; Thanks!</P></BODY></HTML> Wed, 23 Jul 2014 20:12:17 GMT https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107969#M56155 TomD.inPDX 2014-07-23T20:12:17Z Re: Render trick with spheres https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107970#M56156 <HTML><HEAD></HEAD><BODY><P>I believe this is because Creo is trying to impose, that the full revolve is only one surface (while the internal mathematics always need two, to close the surface). So when you select one of the two half surfaces and apply the color, it gets applied to the other as well by Creo.</P><P></P><P>As it seems this little "fake" has not been implemented to deal with mirror or redefinition of partial revolves. I agree, that it could happen to be "fixed" some day (although I assume chances are low as is the priority).</P><P></P><P>Even Editing &gt; Split Surface (with the option to select contours automatically) creates a "similar instable situation", i.e. it applies the original color to the second side, but when you try to apply a different color to either half, the full surface gets colored again.</P></BODY></HTML> Thu, 24 Jul 2014 14:42:18 GMT https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107970#M56156 gkoch 2014-07-24T14:42:18Z Re: Render trick with spheres https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107971#M56157 <HTML><HEAD></HEAD><BODY><P>If all else fails, Creo allows a negative revolve angle value to be entered. (-180 becomes 180, but when checking out, it revolves in the opposite direction), so assigning a color to the entire part, then a +180 degree revolve, color, -180 degree revolve, and you have a bi-colored sphere. It merges the two surfaces, however, so repainting one at a time doesn't work still.</P></BODY></HTML> Thu, 24 Jul 2014 16:59:25 GMT https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107971#M56157 DaltonF. 2014-07-24T16:59:25Z Re: Render trick with spheres https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107972#M56158 <HTML><HEAD></HEAD><BODY><P>It really is a fluke. I can see someone complaining about the behavour but for me, it is a nice bug to have. We have so few -nice- bugs <IMG src="https://community.ptc.com/legacyfs/online/emoticons/happy.png" /></P></BODY></HTML> Thu, 24 Jul 2014 17:36:33 GMT https://www.ptcusercommunity.com/t5/3D-Part-Assembly-Design/Render-trick-with-spheres/m-p/107972#M56158 TomD.inPDX 2014-07-24T17:36:33Z