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July 13, 2009, 14:36 |
Update nodes with a ON_DEMAND UDF
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#1 |
Member
Join Date: Jun 2009
Posts: 31
Rep Power: 17 |
Hi,
I'm calculating the displacement of the nodes by comparing two grids at different times, so the way it does it, is that it goes through the faces of a thread, and then on each face goes through all the nodes. However, as some faces "share" nodes, I end up calculating the displacement for one node several times. I tried to use something I found in the GRID_MOTION macro: f_node_loop (f1, t1, n1) { node1 = F_NODE(f1, t1, n1); if (NODE_POS_NEED_UPDATE (node1)) { NODE_POS_UPDATED (node1); ...... However when I use this the UDF never goes inside the IF, so I get no information from the nodes. Does anyone know how to implement this function on a ON_DEMAND macro? I appreciate any comments about it! |
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grid motion, need update, node, on demand, update |
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