diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index f1be2e5..e5cd101 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -5,8 +5,8 @@ set(hdrs
     include/pw/core/core.hpp
     include/pw/core/math.hpp
     include/pw/core/matrixbase.hpp
-#    include/pw/core/matrix.hpp
-#    include/pw/core/vector.hpp
+	include/pw/core/matrix.hpp
+	include/pw/core/vector.hpp
 #    include/pw/core/quaternion.hpp
 #    include/pw/core/serialize.hpp
     include/pw/core/image.hpp
@@ -14,7 +14,7 @@ set(hdrs
     include/pw/core/rect.hpp
     include/pw/core/size.hpp
     include/pw/core/timer.hpp
-#    include/pw/core/mesh.hpp
+	include/pw/core/mesh.hpp
     include/pw/core/globals.hpp
     include/pw/core/image.hpp
     )
@@ -23,7 +23,7 @@ set(srcs
 #    src/buffer.cpp
     src/image.cpp
     src/debug.cpp
-#    src/mesh.cpp
+	src/mesh.cpp
     src/core.cpp
 #    src/serialize.cpp
     src/timer.cpp
diff --git a/src/core/include/pw/core/matrix.hpp b/src/core/include/pw/core/matrix.hpp
index 6e7c43b..38323b4 100644
--- a/src/core/include/pw/core/matrix.hpp
+++ b/src/core/include/pw/core/matrix.hpp
@@ -32,6 +32,197 @@
 
 namespace pw {
 
+
+
+template <typename T, std::size_t R,std::size_t C,bool RowMajor = false>
+struct matrix_ : matrixbase_<T, matrix_<T, R, C>> {
+
+	T data[R*C];
+
+	matrix_() = default;
+
+	matrix_(const matrix_<T,R,C,RowMajor>& other)
+	{
+		*this = other;
+	}
+
+	matrix_& operator = (const matrix_<T,R,C,RowMajor>& other)
+	{
+		for (size_t i = 0; i < other.size();i++) (*this)[i] = other[i];
+		return *this;
+	}
+
+	template <typename... Arguments>
+	matrix_(Arguments ...values)
+		: data {values... }
+	{
+		static_assert(sizeof...(Arguments) == R*C,
+						"Incorrect number of arguments");
+	}
+
+	//! rows
+	inline std::size_t rows() const { return R; }
+
+	//! return number of columns
+	inline std::size_t cols() const { return C; }
+
+	//! get cell count
+	inline std::size_t coefficients() const { return this->size(); }
+
+	inline size_t offset(size_t r,size_t c) const {
+		return (RowMajor) ? r * C + c : c * R + r;
+	}
+
+	inline T& operator () (std::size_t r, std::size_t c) {
+		return data[offset(r,c)];
+	}
+
+	inline const T& operator () (std::size_t r, std::size_t c) const {
+		return data[offset(r,c)];
+	}
+
+	//! set identity
+	inline matrix_& set_identity()
+	{
+		for (unsigned int r = 0;r < rows(); r++)
+			for (unsigned int c = 0; c < cols(); c++)
+				this->at(r,c) = (c == r) ? T(1) : T(0);
+		return *this;
+	}
+
+	template<std::size_t Rs,std::size_t Cs,bool RowMajorSlice = RowMajor>
+	matrix_<T,Rs,Cs,RowMajorSlice> slice(std::size_t r,std::size_t c) const
+	{
+		matrix_<T,Rs,Cs,RowMajorSlice> s;
+		for (std::size_t ri = 0;ri < Rs;ri++)
+			for (std::size_t ci = 0;ci < Cs;ci++)
+				s(ri,ci) = (*this)(ri+r,ci+c);
+		return s;
+	}
+
+	template<std::size_t Rs,std::size_t Cs,bool RowMajorSlice = RowMajor>
+	matrix_& set_slice(const matrix_<T,Rs,Cs,RowMajorSlice>& s,std::size_t r,std::size_t c)
+	{
+		for (std::size_t ri = 0;ri < Rs;ri++)
+			for (std::size_t ci = 0;ci < Cs;ci++)
+				(*this)(ri+r,ci+c) = s(ri,ci);
+		return *this;
+	}
+
+
+	template<std::size_t Rs,std::size_t Cs,bool RowMajorSlice = RowMajor>
+	matrix_<T,Rs,Cs,RowMajorSlice> minor(std::size_t r0,std::size_t c0)  const
+	{
+		matrix_<T,Rs,Cs,RowMajorSlice> m;
+		size_t r = 0;
+		for (size_t ri = 0; ri < R; ri++) {
+			size_t c = 0;
+			if (ri == r0)
+				continue;
+			for (size_t ci = 0; ci < C; ci++)
+			{
+				if (ci == c0)
+					continue;
+				m(r,c) = (*this)(ri,ci);
+				c++;
+			}
+			r++;
+		}
+		return m;
+	}
+
+	T determinant() const {
+		T det(0);
+		for (size_t c = 0; c < C; c++)
+			det += ((c % 2 == 0) ? (*this)(0,c) : -(*this)(0,c))
+					* this->minor<R-1,C-1,RowMajor>(0,c).determinant();
+		return det;
+	}
+
+	matrix_<T,C,R,RowMajor> transposed() const {
+		matrix_<T,C,R,RowMajor> res;
+		for (size_t r = this->rows();r-->0;)
+			for (size_t c = this->cols();c-->0;)
+				res(c,r) = (*this)(r,c);
+		return res;
+	}
+
+	matrix_<T,C,R,RowMajor> inverse() const {
+		T invDet = T(1) / this->determinant();
+		matrix_<T,C,R,RowMajor> inv;
+		for (int j = 0; j < C; j++)
+			for (int i = 0; i < R; i++)
+			{
+				const T minorDet = this->minor<R-1,C-1,RowMajor>(j,i).determinant();
+				const T coFactor = ((i + j) % 2 == 1) ? -minorDet : minorDet;
+				inv(i, j) = invDet * coFactor;
+			}
+		return inv;
+	}
+
+	inline bool row_major() const {
+		return RowMajor;
+	}
+
+	inline bool square() const { return R == C; }
+
+
+};
+
+template <> inline
+float matrix_<float,1,1>::determinant() const
+{
+	return (*this)(0,0);
+}
+
+template <> inline
+double matrix_<double,1,1>::determinant() const
+{
+	return (*this)(0,0);
+}
+
+
+
+template <typename T, std::size_t R, std::size_t Ca,std::size_t Cb>
+auto operator * (const matrix_<T, R, Ca>& A,
+				 const matrix_<T, R, Cb>& B
+				 )
+{
+	matrix_<T,R,Cb> result; result.zero(); // zero the output
+	for (size_t r = 0; r < R; r++)
+		for (size_t c = 0; c < Cb; c++)
+			for (size_t iI = 0; iI < R; iI++)
+				result(r,c) += A(r,iI) * B(iI,c); // inner product
+	return result;
+}
+
+
+//
+//
+//
+
+
+template <typename T> using matrix2x2_ = matrix_<T, 2, 2>;
+template <typename T> using matrix3x3_ = matrix_<T, 3, 3>;
+template <typename T> using matrix4x4_ = matrix_<T, 4, 4>;
+
+using matrix2x2f = matrix_<float, 2, 2>;
+using matrix2x2d = matrix_<double, 2, 2>;
+using matrix2x2  = matrix_<real_t, 2, 2>;
+
+using matrix3x3f = matrix_<float, 3, 3>;
+using matrix3x3d = matrix_<double, 3, 3>;
+using matrix3x3  = matrix_<real_t, 3, 3>;
+
+using matrix4x4f = matrix_<float, 4, 4>;
+using matrix4x4d = matrix_<double, 4, 4>;
+using matrix4x4  = matrix_<real_t, 4, 4>;
+
+}
+
+
+#if __OLD
+
 template <unsigned int R, unsigned int C, typename T>
 class matrix_ : public matrixbase<T> {
 
@@ -633,6 +824,7 @@ typedef matrix4x4_<float> matrix4x4f;
 
 }
 
+#endif
 
 
 #endif
diff --git a/src/core/include/pw/core/matrixbase.hpp b/src/core/include/pw/core/matrixbase.hpp
index 402b631..7941fef 100644
--- a/src/core/include/pw/core/matrixbase.hpp
+++ b/src/core/include/pw/core/matrixbase.hpp
@@ -30,6 +30,7 @@
 #include <type_traits>
 #include <utility>
 #include <initializer_list>
+#include <cmath>
 
 #include <iostream>
 
@@ -54,9 +55,26 @@ struct matrixbase_ {
     }
 
     T trace() const {
-        return std::accumulate(std::begin(derived().data),std::end(derived().data),T());
+		return std::accumulate(std::begin(derived().data),std::end(derived().data),T(0));
     }
 
+
+	inline T squared_norm() const {
+		return std::accumulate(std::begin(derived().data),std::end(derived().data), T(0),
+							   [&](const T& a,const T& b){
+			return a + b * b;
+		});
+	}
+
+	inline T norm() const {
+		return std::sqrt(squared_norm());
+	}
+
+	inline Derived& normalize() {
+		(*this) /= this->norm();
+		return derived();
+	}
+
     using iterator = T*;
     using const_iterator = const T*;
     iterator begin() { return &derived().data[0]; }
@@ -73,226 +91,18 @@ struct matrixbase_ {
     }
 
     inline Derived& operator *= (const T& b) { for (auto & e : *this) e *= b; return derived(); }
-    inline Derived& operator /= (const T& b) { for (auto & e : *this) e *= b; return derived(); }
-    inline Derived& operator += (const T& b) { for (auto & e : *this) e *= b; return derived(); }
-    inline Derived& operator -= (const T& b) { for (auto & e : *this) e *= b; return derived(); }
-};
+	inline Derived& operator /= (const T& b) { for (auto & e : *this) e /= b; return derived(); }
+	inline Derived& operator += (const T& b) { for (auto & e : *this) e += b; return derived(); }
+	inline Derived& operator -= (const T& b) { for (auto & e : *this) e -= b; return derived(); }
 
 
-template <typename T, std::size_t R,std::size_t C,bool RowMajor = false>
-struct matrix_ : matrixbase_<T, matrix_<T, R, C>> {
-
-    T data[R*C];
-
-    matrix_() = default;
-
-    matrix_(const matrix_<T,R,C,RowMajor>& other)
-    {
-        *this = other;
-    }
-
-    matrix_& operator = (const matrix_<T,R,C,RowMajor>& other)
-    {
-        for (size_t i = 0; i < other.size();i++) (*this)[i] = other[i];
-        return *this;
-    }
-
-	template <typename... Arguments>
-	matrix_(Arguments ...values)
-		: data {values... }
-	{
-		static_assert(sizeof...(Arguments) == R*C,
-						"Incorrect number of arguments");
-	}
-
-    //! rows
-    inline std::size_t rows() const { return R; }
-
-    //! return number of columns
-    inline std::size_t cols() const { return C; }
-
-    //! get cell count
-    inline std::size_t coefficients() const { return R * C; }
-
-	inline size_t offset(size_t r,size_t c) const {
-        return (RowMajor) ? r * C + c : c * R + r;
-    }
-
-    inline T& operator () (std::size_t r, std::size_t c) {
-        return data[offset(r,c)];
-    }
-
-    inline const T& operator () (std::size_t r, std::size_t c) const {
-        return data[offset(r,c)];
-    }
-
-    //! set identity
-    inline matrix_& set_identity()
-    {
-        for (unsigned int r = 0;r < rows(); r++)
-            for (unsigned int c = 0; c < cols(); c++)
-                this->at(r,c) = (c == r) ? T(1) : T(0);
-        return *this;
-    }
-
-    template<std::size_t Rs,std::size_t Cs,bool RowMajorSlice = RowMajor>
-    matrix_<T,Rs,Cs,RowMajorSlice> slice(std::size_t r,std::size_t c) const
-    {
-        matrix_<T,Rs,Cs,RowMajorSlice> s;
-        for (std::size_t ri = 0;ri < Rs;ri++)
-            for (std::size_t ci = 0;ci < Cs;ci++)
-                s(ri,ci) = (*this)(ri+r,ci+c);
-        return s;
-    }
-
-    template<std::size_t Rs,std::size_t Cs,bool RowMajorSlice = RowMajor>
-    matrix_& set_slice(const matrix_<T,Rs,Cs,RowMajorSlice>& s,std::size_t r,std::size_t c)
-    {
-        for (std::size_t ri = 0;ri < Rs;ri++)
-            for (std::size_t ci = 0;ci < Cs;ci++)
-                (*this)(ri+r,ci+c) = s(ri,ci);
-        return *this;
-    }
-
-
-	template<std::size_t Rs,std::size_t Cs,bool RowMajorSlice = RowMajor>
-	matrix_<T,Rs,Cs,RowMajorSlice> minor(std::size_t r0,std::size_t c0)  const
-	{
-		matrix_<T,Rs,Cs,RowMajorSlice> m;
-		size_t r = 0;
-		for (size_t ri = 0; ri < R; ri++) {
-			size_t c = 0;
-			if (ri == r0)
-				continue;
-			for (size_t ci = 0; ci < C; ci++)
-			{
-				if (ci == c0)
-					continue;
-				m(r,c) = (*this)(ri,ci);
-				c++;
-			}
-			r++;
-		}
-		return m;
-	}
-
-    T determinant() const {
-        T det(0);
-		for (size_t c = 0; c < C; c++)
-			det += ((c % 2 == 0) ? (*this)(0,c) : -(*this)(0,c))
-					* this->minor<R-1,C-1,RowMajor>(0,c).determinant();
-        return det;
-    }
-
-    matrix_<T,C,R,RowMajor> transposed() const {
-        matrix_<T,C,R,RowMajor> res;
-        for (size_t r = this->rows();r-->0;)
-            for (size_t c = this->cols();c-->0;)
-                res(c,r) = (*this)(r,c);
-        return res;
-    }
-
-	matrix_<T,C,R,RowMajor> inverse() const {
-		T invDet = T(1) / this->determinant();
-		matrix_<T,C,R,RowMajor> inv;
-		for (int j = 0; j < C; j++)
-			for (int i = 0; i < R; i++)
-			{
-				const T minorDet = this->minor<R-1,C-1,RowMajor>(j,i).determinant();
-				const T coFactor = ((i + j) % 2 == 1) ? -minorDet : minorDet;
-				inv(i, j) = invDet * coFactor;
-			}
-		return inv;
-    }
-
-    inline bool row_major() const {
-        return RowMajor;
-    }
-
-    inline bool square() const { return R == C; }
-
 };
 
-template <> inline
-float matrix_<float,1,1>::determinant() const
-{
-	return (*this)(0,0);
-}
-
-template <> inline
-double matrix_<double,1,1>::determinant() const
-{
-	return (*this)(0,0);
-}
-
-
-template <typename T, std::size_t R, std::size_t Ca,std::size_t Cb>
-auto operator * (const matrix_<T, R, Ca>& A,
-				 const matrix_<T, R, Cb>& B
-				 )
-{
-	matrix_<T,R,Cb> result; result.zero(); // zero the output
-	for (size_t r = 0; r < R; r++)
-		for (size_t c = 0; c < Cb; c++)
-			for (size_t iI = 0; iI < R; iI++)
-				result(r,c) += A(r,iI) * B(iI,c); // inner product
-	return result;
-}
-
 //
 //
 //
 
-template <typename T, std::size_t N,bool RowMajor = false>
-struct vector_ : matrix_<T, N, 1, RowMajor>
-{
-    typedef matrix_<T, N, 1, RowMajor> derived_type;
 
-	vector_() = default;
-    vector_(const derived_type& rhs) : derived_type(rhs) {}
-
-	template <typename... Arguments>
-	vector_(Arguments ...values)
-		: derived_type( { values...} )
-	{
-		static_assert(sizeof...(Arguments) == N,
-						"Incorrect number of arguments");
-	}
-};
-
-template <typename T, typename U, std::size_t N,bool RowMajor = false>
-auto operator * (const vector_<T, N, RowMajor>& a, const vector_<U, N, RowMajor>& b)
--> vector_<decltype(a[0] * b[0]), N, RowMajor> {
-    vector_<decltype(a[0] * b[0]), N, RowMajor> result;
-    for (std::size_t i = 0; i < N; ++i) {
-        result[i] = a[i] * b[i];
-    }
-    return result;
-}
-
-template <typename T, typename U, std::size_t N,bool RowMajor = false>
-auto dot(const vector_<T, N, RowMajor>& a, const vector_<U, N, RowMajor>& b)
--> decltype(a[0] * b[0]) {
-    auto product = a * b;
-    using V = decltype(product.x);
-    return std::accumulate(std::begin(product), std::end(product), V(0));
-}
-
-
-//
-//
-//
-
-template <typename T> using matrix2x2_ = matrix_<T, 2, 2>;
-template <typename T> using matrix3x3_ = matrix_<T, 3, 3>;
-template <typename T> using matrix4x4_ = matrix_<T, 4, 4>;
-
-using matrix2x2f = matrix_<float, 2, 2>;
-
-template <typename T> using vector2_ = vector_<T, 2>;
-template <typename T> using vector3_ = vector_<T, 3>;
-template <typename T> using vector4_ = vector_<T, 4>;
-using vector2f = vector2_<float>;
 
 
 ///**
diff --git a/src/core/include/pw/core/vector.hpp b/src/core/include/pw/core/vector.hpp
index 2bdee2c..cb9e07c 100644
--- a/src/core/include/pw/core/vector.hpp
+++ b/src/core/include/pw/core/vector.hpp
@@ -27,6 +27,70 @@
 
 namespace pw {
 
+
+template <typename T, std::size_t N,bool RowMajor = false>
+struct vector_ : matrix_<T, N, 1, RowMajor>
+{
+	typedef matrix_<T, N, 1, RowMajor> derived_type;
+
+	vector_() = default;
+	vector_(const derived_type& rhs) : derived_type(rhs) {}
+
+	template <typename... Arguments>
+	vector_(Arguments ...values)
+		: derived_type( { values...} )
+	{
+		static_assert(sizeof...(Arguments) == N,
+						"Incorrect number of arguments");
+	}
+};
+
+template <typename T, typename U, std::size_t N,bool RowMajor = false>
+auto operator * (const vector_<T, N, RowMajor>& a, const vector_<U, N, RowMajor>& b)
+-> vector_<decltype(a[0] * b[0]), N, RowMajor> {
+	vector_<decltype(a[0] * b[0]), N, RowMajor> result;
+	for (std::size_t i = 0; i < N; ++i) {
+		result[i] = a[i] * b[i];
+	}
+	return result;
+}
+
+template <typename T, typename U, std::size_t N,bool RowMajor = false>
+auto dot(const vector_<T, N, RowMajor>& a, const vector_<U, N, RowMajor>& b)
+-> decltype(a[0] * b[0]) {
+	auto product = a * b;
+	using V = decltype(product.x);
+	return std::accumulate(std::begin(product), std::end(product), V(0));
+}
+
+
+//
+//
+//
+
+template <typename T> using vector2_ = vector_<T, 2>;
+template <typename T> using vector3_ = vector_<T, 3>;
+template <typename T> using vector4_ = vector_<T, 4>;
+
+using vector2f = vector2_<float>;
+using vector2d = vector2_<double>;
+using vector2  = vector2_<real_t>;
+
+using vector3f = vector3_<float>;
+using vector3d = vector3_<double>;
+using vector3  = vector3_<real_t>;
+
+using vector4f = vector4_<float>;
+using vector4d = vector4_<double>;
+using vector4  = vector4_<real_t>;
+
+}
+
+
+
+
+#if ___OLDSTUFF
+
 template <unsigned int components,typename T>
 class vector_ : public matrix_<components,1,T> {
 public:
@@ -213,6 +277,6 @@ typedef vector4_<unsigned int> vector4ui;
 
 
 
-
+#endif
 
 #endif
diff --git a/src/core/src/mesh.cpp b/src/core/src/mesh.cpp
index e02acf8..d10794c 100644
--- a/src/core/src/mesh.cpp
+++ b/src/core/src/mesh.cpp
@@ -9,7 +9,7 @@ void mesh::apply(const matrix4x4 &m)
     {
 //        v = vector4(m * v.project(1)).un_project();
 
-                auto vh = v.project(1);
+//                auto vh = v.project(1);
         //        m.mul(vh);
     }
 }
diff --git a/src/core/tests/pwcore_test_matrix.cpp b/src/core/tests/pwcore_test_matrix.cpp
index ae063fc..b462ce6 100644
--- a/src/core/tests/pwcore_test_matrix.cpp
+++ b/src/core/tests/pwcore_test_matrix.cpp
@@ -1,7 +1,8 @@
 
-#include <pw/core/matrixbase.hpp>
 
-//#include <pw/core/matrix.hpp>
+#include <pw/core/matrix.hpp>
+#include <pw/core/vector.hpp>
+
 //#include <pw/core/serialize.hpp>
 
 #include <pw/core/debug.hpp>
@@ -62,6 +63,12 @@ int main(int argc,char **argv) {
 	std::cout << "v2_f " << v2_f << std::endl;
 	std::cout << "v2_b " << v2_b << std::endl;
 
+	std::cout << "v2_b.norm " << v2_b.norm() << std::endl;
+
+	v2_b.normalize();
+	std::cout << "v2_b.normalized " << v2_b << std::endl;
+
+