Its ok, I've made some test and I understand how it works now... thanks for
the help.
I've another question, a similar one but I think I can ask it here :
If my node is a PAT i do
quat = pat-getAttitude();
if my node is a MatrixTransform i do
quat = mt-getMatrix().getRotate();
But in the
HI Vincent,
The getWorldMatrices() method returns accumulated world matrices, if
there is more than one then it means you have multiple parental paths
and that multiple world matrices are required to position the
different instances. The getWorldMatrices() is not a list of
matrices along a
Hi all,
I make a little up of this topic because I'm now looking on it a last time
(I hope)
To be more clear,
I have a difference between getting the transform quat with theses two way :
osg::MatrixList ml = _node-getWorldMatrices();
osg::Matrixd Msum = osg::Matrixd::identity();
Hi Robert,
If I understand well, getWorldMatrices() return one matrix per parental
path.
but if I want to get the world Matrix, the one which represent the node's
position and translation in absolute system, how can I do ? Which matrix I
have to get ?
I feel a little bit lost in theses
Hi Alberto
Thanks for help, I understand the instance problem... If all is good in my
situation I would not have many instances of the same node... so I think it
will be more simple...
Because my problem is more recent, I ask a second question : To get this
node's position (absolute ), if I
In your example you are using getWorldMatrices.
I know this function, thanks... I and Robert were talking about it.
But what I simply need is :
with a node, I need its position (absolute/world coordinates), and its
orientation (in the world system coordinates).
How can I do it ?
(Sorry, I'm not
Sorry, I don't get what you exactly are looking for. Would this example help?
It calculates the position of a node in world coordinates:
#include osg/Node
#include osg/Group
#include osg/Matrix
#include osg/MatrixTransform
#include iostream
int main()
{
osg::Group *root;
Sorry if I don't understand you again, but my program is giving you the
absolute position of the node (the fourth column of the matrix, (10,20,-5))
and its world orientation ( the first 3x3 block, equal to identity since the
two transforms were translation ones).
Try changing m1 and m2 to see
Hi all,
I'm trying to get a node's parent as Transform (PAT or MatrixTransform) but
I have to get the transformation in ABSOLUTE_RF...
For the moment, I've done a recursive method to get Parent as Transform. It
return me the first parent as Tranform it encounter.
I've tried this :
Hi Vincent,
I'm a bit confused about what you are trying to do, is it just get the
accumulated world matrix at a specific node?
If so then node::getWorldMatrices() is what you want. This will
return a MatrixList, which will contain none, one or many matrices
given that any node many have none
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