Get rid of all the unused stuff.
internally use Eigen for computing Inverse.
Removed the stupid incomprehensible method Invert() that changed the matrix itself.
Nobody was using it in a reasonable way.
Corrected ToAscii() and SetFromAscii() methods, which should work with 8 values instead of 9 (well, in effect they are implemantation dependent methods, so...).
* update the gl/math wrappers to make them more Eigen friendly
(and remove the useless, and not used, and somehow dangerous
*Direct and *E functions)
* add automatic reinterpret_casting from Eigen::Matrix to vcg
specialized types
with both old and new version. The fixes include:
- dot product: vec0 * vec1 => vec0.dot(vec1) (I added .dot() to the old Point classes too)
- Transpose: Transpose is an Eigen type, so we cannot keep it if Eigen is used. Therefore
I added a .tranpose() to old matrix classes, and modified most of the Transpose() to transpose()
both in vcg and meshlab. In fact, transpose() are free with Eigen, it simply returns a transpose
expression without copies. On the other be carefull: m = m.transpose() won't work as expected,
here me must evaluate to a temporary: m = m.transpose().eval(); However, this operation in very
rarely needed: you transpose at the same sime you set m, or you use m.transpose() directly.
- the last issue is Normalize which both modifies *this and return a ref to it. This behavior
don't make sense anymore when using expression template, e.g., in (a+b).Normalize(), the type
of a+b if not a Point (or whatever Vector types), it an expression of the addition of 2 points,
so we cannot modify the value of *this, since there is no value. Therefore I've already changed
all those .Normalize() of expressions to the Eigen's version .normalized().
- Finally I've changed the Zero to SetZero in the old Point classes too.
* curently nothing change if you don't define VCG_USE_EIGEN
* make Matrix*, Point3 and Point4 derive Eigen::Matrix (still ugly)
* now catching all the dot products to replace them by .dot()
note that most of meshlab already compile
Paolo Cignoni
ganovelli
Marco Callieri
Federico Ponchio
Nico Pietroni
granzuglia
Marco Di Benedetto
mtarini