Digging up this old thread. I'm trying to get some data from one set of points and apply them to another set within one polygon object. I see how some of the examples shown in this thread can access one point, but what about every even or odd numbered point? I'd like the odd points to share Y position with the next even point. How can I find and apply the position data of (Vertex Index -1)?
Thanks! On Mon, Dec 15, 2008 at 8:49 AM, Alan Fregtman <[email protected]> wrote: > Cool! I wouldn't have thought of using that. :) > > Good job exploring stuff, Chris, > > -- Alan > > > On Mon, Dec 15, 2008 at 6:20 AM, Chris Marshall > <[email protected]> wrote: > > Ah Hah! Got it working. > > Took some grappling, but was simple solution in the end. From the > original > > working setup where you filter the element index, if you run the output > of > > the filter node through a "Get Maximum in Set" node, this gives you > *just* > > the single vector. This is confirmed by showing the values, before this > node > > you get zeros on the cube etc, after this node you just get the one > vector > > values displayed at the origin. So it's only spitting out the stuff > wanted. > > Phew! > > Thanks again. > > Chris > > > > Chris Marshall wrote: > > > > Thanks for the explanation. It does appear to be confusing. It looks like > > the tools for accessing sets are limited, though it might be possible to > get > > the data required with some fiddling. I'll have a dabble. > > Thanks > > Chris > > > > javier wrote: > > > > I quickly scanned thrugh this email, I think the answer is that points > > in a polymesh are not part of an array but part of a set. so you are > > extracting the selected element in the array per point, that means all > > points. > > > > It seems to me that ICE is built using 2 differetn paradigmns for > > point access. Arrays and Sets. > > A particle cloud or a Polygon's points are points in the set, so > > youhave to either use the statistics nodes or in your case, I think > > getting the point by ID should do it. Im not in front of xsi, but i > > think you could grab the point array, enter the id index into an id > > node and then maybe plug into a filter node? I agree is a bit > > confusing > > > > > > Converting arrays to sets seems quite easy if the array is of vectors. > > you get your array and create a point cloud and stick the array into > > the AddPoints, then you can grab the point positions as set. > > I havent tried the opposite. > > > > > > > > > > _______________________________________________ > > Softimage mailing list > > [email protected] > > http://listproc.autodesk.com/mailman/listinfo/softimage > > > > > _______________________________________________ > Softimage mailing list > [email protected] > http://listproc.autodesk.com/mailman/listinfo/softimage >
