In Xgen, when I use custom geometry or cars. I need them to lay along my geometry (like feathers). Sometimes Tilt U or V works for this. Sometimes my archived geometry or cards will point in different directions as shown on the car model below: Some of the cards lay across car and some lay along the length of the car. Even though the Tilt V is the only attribute driving them. Normals are correct on all faces...thoughts?
When using attributes to drive XGen parameters like tilt, the construction winding order of the underlying geometry's faces determines the vector used, and this can change across the surface as some faces can be left handed and some can be right.
Sometimes changing the point ordering can help but usually the simplest way to get a uniform, controlled direction is to use groomable splines and use the brushes to control the direction of the splines
Hi!
It's not that easy.
The following with Quad Draw Tool will lead to 2 different results (directions/orientation).
("Reorder Vertices" made it more worse in my tests, so don't expect it to help.)
NO, the underlying winding order of the faces that Seexpr and ptex uses to evaluate the U and V directions is not easy to address in the mesh, but you paint maps with groomable splines and switch primitive types
Groomable Splines:
Cards
Archives
When you switch types, you won't be able to make changes to the groom spline as only splines can be 'groomed' but you can just switxh back to splines to make cahnges and then switch back. Xgen willl remember the settings for each type as you switch.
Cards will need to be adjusted as XGen uses the cneter point of the cards as the pivot, not the base. You'll need to adjust the offset and length to compensate.
Cheers
I know, that's why I showed that you can use the groomable splines to paint maps that can be used to drive tilt U and V and have those maps drive other primitive types.
Seexpr and ptex are very particular when it comes to topology.
I have tried grooming the splines with the orientation brush. The splines look perfect across all faces. I switch them to archives and they are still misaligned. I am attaching a simple scene which shows this. Is there a step I am missing?
It's important to keep in mind the orientation of the object to be exported as an archive. To have it align correctly in XGen, it needs to be aligned in the original scene, with it's pivot at a good location for it to be transformed around as an archive object.
In this video, I aligned this feather along Y so that it aligns with the tilt values in the maps derived from the groomable splines:
hy
after using the the same method i still facing orientation problem, and they not are following direction
