Hi all,
I've moved some code of mine from PAT objects to MatrixTransform ones,
which suit my needs better. I'm still having a problem getting the
coordinates back. After a quick look, I figured I might be able to
transform an MT into a Transform, and then back into a PAT using the
following:
| MatrixTransform *mt = new MatrixTransform();
| {
| Matrix t = Matrix::translate(5, 0, 0);
| Matrix r = Matrix::rotate(45, 0, 0, 1);
| mt->setMatrix(t*r);
| }
|
| Transform *t = mt->asTransform();
| assert(t!=0);
|
| Transform *pat = t->asPositionAttitudeTransform();
| assert(pat!=0);(For reference, whole source code attached.) I'm getting that: | a.out: asPAT.cpp:27: int main(): Assertion `pat!=0' failed. Should I understand that those functions, mimicking dynamic_cast calls, would only work when a PAT object gets casted into a Transform one and then back to a PAT object? If so, I guess I'd have to extract the translation from the matrix I'd have with mt->getMatrix()? Thanks for your time. Cheers, -- Cyril Brulebois
#include <osg/Matrix>
#include <osg/MatrixTransform>
#include <osg/PositionAttitudeTransform>
#include <osg/Transform>
#include <cassert>
using namespace osg;
int main(void) {
MatrixTransform *mt = new MatrixTransform();
{
Matrix t = Matrix::translate(5, 0, 0);
Matrix r = Matrix::rotate(45, 0, 0, 1);
mt->setMatrix(t*r);
}
Transform *t = mt->asTransform();
assert(t!=0);
Transform *re_mt = t->asMatrixTransform();
assert(re_mt!=0);
Transform *pat = t->asPositionAttitudeTransform();
assert(pat!=0);
return 0;
}
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