Hi Bartek, See below for our Dev's comments on your script: His example code is not clear. In first 2 lines, user works with input at line 2 which is mesh. In line 3, he works with outMesh.
Our dev gives the following example:
Primitive prim = ctxt.GetInputValue( 0 );
PolygonMesh mesh( prim.GetGeometry( 0, siConstructionModeAnimation ) );
CVertexRefArray points = mesh.GetVertices();
MATH::CVector3Array pos = points.GetPositionArray();
const MATH::CVector3* l_pSrc = &pos[0];
l_pSrc contains non-zero values.
Hope this explains.
From: [email protected]
[mailto:[email protected]] On Behalf Of Bartek Opatowiecki
Sent: Saturday, April 13, 2013 8:36 PM
To: [email protected]
Subject: Re: How to make a deformer absolute ?
Primitive prim = (CRef)ctx.GetInputValue(0,0);
PolygonMesh mesh(prim.GetGeometry(0,siConstructionModeAnimation));
CVertexRefArray outPoints = outMesh.GetVertices();
CVector3Array pos = outPoints.GetPositionArray();
I'm calling that block of code from inside of a customOperator, ok ?
There is an Envelope Operator below. It has some bones
so the mesh is being deformed by that bones.
PolygonMesh
- Secondary Shape Modeling
- Animation
- MyOperator
- EnvelopeOperator ->
-Shape Modeling
- Modeling
How to get result of "EnvelopeOperator" as an Array of absolute vectors, from
within "MyOperator" Update callback ?
Actually "pos " is filled with zeroes.
Hope, you get what I mean :)
Thanks
On Sat, Apr 13, 2013 at 3:04 AM, Raffaele Fragapane
<[email protected]<mailto:[email protected]>> wrote:
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]<mailto:[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]<mailto:[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]<mailto:[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
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