Deprecate `to_pnt`, `as_pnt` and `VecAsPnt`.

Those are meaningless. Use `na::orig() + the_vector` instead.

src/structs/quat.rs

@@ -332,7 +332,7 @@ impl<N: Num + Clone> UnitQuatMulRhs<N, Vec3<N>> for Vec3<N> {
 impl<N: Num + Clone> UnitQuatMulRhs<N, Pnt3<N>> for Pnt3<N> {
     #[inline]
     fn binop(left: &UnitQuat<N>, right: &Pnt3<N>) -> Pnt3<N> {
-        (left * *right.as_vec()).to_pnt()
+        ::orig::<Pnt3<N>>() + *left * *right.as_vec()
     }
 }
 
@@ -349,7 +349,7 @@ impl<N: Num + Clone> Vec3MulRhs<N, Vec3<N>> for UnitQuat<N> {
 impl<N: Num + Clone> Pnt3MulRhs<N, Pnt3<N>> for UnitQuat<N> {
     #[inline]
     fn binop(left: &Pnt3<N>, right: &UnitQuat<N>) -> Pnt3<N> {
-        (left.as_vec() * *right).to_pnt()
+        ::orig::<Pnt3<N>>() + *left.as_vec() * *right
     }
 }
 

src/structs/vec_macros.rs

@@ -686,6 +686,7 @@ macro_rules! transform_impl(
 macro_rules! vec_as_pnt_impl(
     ($tv: ident, $t: ident, $comp0: ident $(,$compN: ident)*) => (
         impl<N> $tv<N> {
+            #[deprecated = "use `na::orig() + this_vector` instead."]
             #[inline]
             pub fn to_pnt(self) -> $t<N> {
                 $t::new(
@@ -694,6 +695,7 @@ macro_rules! vec_as_pnt_impl(
                 )
             }
 
+            #[deprecated = "use `&(na::orig() + *this_vector)` instead."]
             #[inline]
             pub fn as_pnt<'a>(&'a self) -> &'a $t<N> {
                 unsafe {

src/traits/structure.rs

@@ -146,6 +146,7 @@ pub trait IterableMut<N> {
  * Vec related traits.
  */
 /// Trait that relates a point of an affine space to a vector of the associated vector space.
+#[deprecated = "This will be removed in the future. Use point + vector operations instead."]
 pub trait VecAsPnt<P> {
     /// Converts this point to its associated vector.
     fn to_pnt(self) -> P;