Hi all,
What I do:
- I turn the camera around the y axis when I move the mouse
- I call calcViewRay every frame and write the x component of the ray
direction to a log file:
http://www.flickr.com/photos/86793018@N05/7949716088/in/photostream/lightbox/
The problem are the peaks..
I tracked them down to the multFull function in OSGMatrix.inl (below).
pntIn is Pnt3f(rx, ry, 1) and looks fine (I plotted rx and ry).
The Matrix seams ok:
matrix[3][3] always around 25
For every peak I show I get the error message that w == 0.0, I checked all
values but could not find something wrong :(
http://www.flickr.com/photos/86793018@N05/7949713038/in/photostream/lightbox/
It could somehow be related to the way I set my transformation matrices (I
use from at up vectors and use the MatrixLookAt function)
Any idea where this could come from, what is the meaning of w?
Best Regards,
Victor
template <class ValueTypeT>
inline void
TransformationMatrix<ValueTypeT>::multFull(
const PointType3f &pntIn, PointType3f &pntOut) const
{
ValueType w = _matrix[0][3] * pntIn[0] +
_matrix[1][3] * pntIn[1] +
_matrix[2][3] * pntIn[2] +
_matrix[3][3];
if(w == TypeTraits<ValueType>::getZeroElement())
{
FWARNING(("TransformationMatrix<>::multFull(Pnt3, Pnt3): w ==
0.0\n"));
pntOut.setValues(
(_matrix[0][0] * pntIn[0] +
_matrix[1][0] * pntIn[1] +
_matrix[2][0] * pntIn[2] +
_matrix[3][0] ),
(_matrix[0][1] * pntIn[0] +
_matrix[1][1] * pntIn[1] +
_matrix[2][1] * pntIn[2] +
_matrix[3][1] ),
(_matrix[0][2] * pntIn[0] +
_matrix[1][2] * pntIn[1] +
_matrix[2][2] * pntIn[2] +
_matrix[3][2] ) );
}
else
{
w = TypeTraits<ValueType>::getOneElement() / w;
pntOut.setValues(
(_matrix[0][0] * pntIn[0] +
_matrix[1][0] * pntIn[1] +
_matrix[2][0] * pntIn[2] +
_matrix[3][0] ) * w,
(_matrix[0][1] * pntIn[0] +
_matrix[1][1] * pntIn[1] +
_matrix[2][1] * pntIn[2] +
_matrix[3][1] ) * w,
(_matrix[0][2] * pntIn[0] +
_matrix[1][2] * pntIn[1] +
_matrix[2][2] * pntIn[2] +
_matrix[3][2] ) * w );
}
}
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