how to indicate the boundary between ...

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Author Message   kim tran (kimngoc999) New member Username: kimngoc999 Post Number: 1 Registered: 06-2009 Posted on Tuesday, June 16, 2009 - 06:28 am:    Hello everyone I want to create 2 spheres ( with the same center). The boundary between them is discontinuity. How can I write a code for it. I try to use "CONTACT" and "JUMP" but i am not sure whether it is correct to use, because I am not really understand it. One more thing, when i run my program. the message is displayed " eeks! inconsistency boundaries ids" what does it means. How can I fix this problem Here is my file. Please have a look. thank you. Kim Please help 3D spherical filler in a box 3d_spherebox test.pde (1.5 k)   kim tran (kimngoc999) New member Username: kimngoc999 Post Number: 2 Registered: 06-2009 Posted on Tuesday, June 16, 2009 - 06:33 am:    Hi all Can I ask anyone who know how to apply the boundary at the center of the sphere NOT on its surface. Please help Thanks