Pilou,
yes it works but it's no good for my method, becouse the key thing in it is unwrap surface and modify this palnar surface and then warp it back. Like unrawp UV for painting textures.
If I will use base object to modify unwarped surface there is no need to unwarp it at all :)

Hi Andrei,

> For example I want to warp this surface with hole around thise "cone" but can not get rounded hole.
> Is it possible to keep hole rounded? Like if I projected circle on this cone.

No, the circle will get deformed, that's part of how Flow works, the objects are mapped onto the target surface following the structure of the target surface.

Because a sphere or revolve like you have there pinches down to a smaller area as it approaches its top point (where it is squished down to a single point), your objects that are being flowed will also do the same thing as well and squish down in the same spots as the surface.

If you want to have something with a kind of round like top but that does not squish down you need to build a surface that does not squish down, instead something more like this:



Basically look at the control point structure of your target surface, if it has areas where control points come together or collapse down into a single point, that will produce a shrinking aspect to the deformation in those same areas.

- Michael

If you started out with a circular hole on your target surface, it is actually possible though to extract the image of that curve in the UV space of the surface, that would then map back to a circle again if you reflowed it. But for a case like that you would have to start out with a projected cut on your surface to begin with, the usual method of doing flow is that you start with flat objects and then apply them to the object. It's not really possible to easily create the flat distorted version of the circle just by drawing it.

But to extract the UV space curves for a surface's trimming boundary this script will do that:

script: /* Create UV curves of selected faces */ var faces = moi.geometryDatabase.getSelectedObjects().getFaces(); for ( var iFace = 0; iFace < faces.length; ++iFace ) { var face = faces.item(iFace); var edges = face.getEdges(); for ( var iEdge = 0; iEdge < edges.length; ++iEdge ) { var edge = edges.item(iEdge); var uvcrvs = edge.getUVCurvesOfEdge(face); moi.geometryDatabase.addObjects( uvcrvs ); } }

- Michael

>>>>>But to extract the UV space curves for a surface's trimming boundary this script will do that:

script: /* Create UV curves of selected faces */ var faces = moi.geometryDatabase.getSelectedObjects().getFaces(); for ( var iFace = 0; iFace < faces.length; ++iFace ) { var face = faces.item(iFace); var edges = face.getEdges(); for ( var iEdge = 0; iEdge < edges.length; ++iEdge ) { var edge = edges.item(iEdge); var uvcrvs = edge.getUVCurvesOfEdge(face); moi.geometryDatabase.addObjects( uvcrvs ); } }

Michael how it works? I tested it and it creates very small profiles.

Hi Andrei,

> Michael how it works? I tested it and it creates very small profiles.

Every edge has both a 3D curve piece to it which you normally see on the screen, but also in addition to that a 2D curve component for how the edge maps to the UV parameter space of the surface. This script extracts out the UV space curve as a regular curve object.

The UV space curve will be inside of the UV domain rectangle of the surface, it's not unusual for that domain to be a 0 to 1 unit square.

- Michael

Thanx)