If you transform the vectors by the global kine transform of the object they come from they will be in world space. Assuming you are reading from another object and getting its point positions (and those are local) and want their global coordinates the above step is what you need. If you want them in the space of another object then you will have to do the above and also multiply by the inverse of the object's global transform you want them to be in the space of.
You can chain those two matrices outside the loop taking care of the pointpos vectors, as they are per object, to save some cycles. Unless you were asking for something else. On Sat, Apr 13, 2013 at 6:45 AM, Bartosz Opatowiecki < [email protected]> wrote: > Actually it is false, because I got deformed vertices > into my deformer any way. So anything I do inside my operator > is relative to the previous operator in the stack... > > Instead, I want to get vertices in world space or in X3DObject space > fed into my deformer. How can I do that ? > > W dniu 2013-04-12 22:33, Alan Fregtman pisze: > > Yeah, it should. > > You're reading from the Modeling stack, so the envelope didn't happen at > that point. > > Then you're setting the positions, so anything between your operator and > the Modeling marker might as well not exist because it's overridden by your > data. > > > > On Fri, Apr 12, 2013 at 4:26 PM, Bartosz Opatowiecki < > [email protected]> wrote: > >> Hey, >> >> Lets forget about node transformations, only vertices are being deformed. >> If, within an update function I get a geometry like this: >> >> Primitive prim = (CRef)ctx.GetInputValue(0,0); >> PolygonMesh mesh(prim.GetGeometry(0,siConstructionModeModeling)); >> CVertexRefArray outPoints = outMesh.GetVertices(); >> CVector3Array pos = outPoints.GetPositionArray(); >> >> and put its data back: >> >> Primitive outPrim(ctx.GetOutputTarget()); >> PolygonMesh outMesh(outPrim.GetGeometry(0,siConstructionModeModeling)); >> CVertexRefArray outPoints = outMesh.GetVertices(); >> outPoints.PutPositionArray(pos); >> >> my output mesh should stay still even if envelope operator is below it. >> Am I right ? >> >> W dniu 2013-04-12 20:10, Alan Fregtman pisze: >> >> From what you said you're already setting the pointpositions (aka >> deforming), so you have *already* *taken over*. You can set the >> deformation to be absolute if your data is absolute and taking the object's >> transform into consideration. >> >> If you mean if you can disable operators downwards... no, you can't. >> >> >> >> On Fri, Apr 12, 2013 at 12:18 PM, Bartek Opatowiecki < >> [email protected]> wrote: >> >>> Hi, >>> >>> I'm working on a customOperator which is deforimg a mesh. >>> It is sitting at the top of an animation construction mode . >>> I would like it to take over the deformation at some point >>> and ignore entire construction stack below it. >>> >>> thanks, >>> Bartek >>> >> >> >> > > -- Our users will know fear and cower before our software! Ship it! Ship it and let them flee like the dogs they are!
