Maybe use two point clouds - one with the original orientation for the instances and a matching cloud with the particles' Y axes pointing at the surface. Use Switch Context to match their positions.
gray From: [email protected] [mailto:[email protected]] On Behalf Of Eric Lampi Sent: Tuesday, September 18, 2012 03:03 PM To: [email protected] Subject: Polygon Island orientation Is there any way to change a polygon island's center axis without moving the points on the attached instances? In the original geo, the points are oriented properly as are the original center points are pointing where I needed them, but since I am now using ICE to push them around, the particle points that are generated from the merged geo that the poly islands come from all orient global 0,0,0. Which was fine up until I was asked to constrain their orientation so that they Y axis is always pointed at the surface underneath. So they need to orient flat along the surface, like how they start out in example 1, example 2 shows what's happening as they fly away from the surface, their orientation does not stay flat. In example 3 you can see what happens when I orient the axis towards the globe's surface, they all flip. So I am a little stuck. After digging into the nodes I haven't found a place where I can make any changes to the orientation of the axis without the instances also flipping. Thoughts? Thanks, Eric -- Freelance 3D and VFX animator
<<attachment: winmail.dat>>
