diff --git a/include/uml/Vector3.h b/include/uml/Vector3.h
index 1b7130f..3bc9bc3 100644
--- a/include/uml/Vector3.h
+++ b/include/uml/Vector3.h
@@ -58,7 +58,7 @@ namespace uml
         {
             return *reinterpret_cast<type*>(this);
         }
-        [[nodiscard]] static Vector3 CreateVelocity(const Vector3& angles, const float length);
+        [[nodiscard]] static Vector3 CreateVelocity(const Vector3& angles, float length);
         [[nodiscard]] float  Sum() const;
         [[nodiscard]] float  Sum2D() const;
         [[nodiscard]] Vector3 ViewAngleTo(const Vector3& other) const;
diff --git a/include/uml/matrix.h b/include/uml/matrix.h
index ebf8dba..25a1305 100644
--- a/include/uml/matrix.h
+++ b/include/uml/matrix.h
@@ -17,7 +17,7 @@ namespace uml
 
         matrix(const matrix &other);
 
-        matrix(size_t rows, size_t columns, float *pRaw);
+        matrix(size_t rows, size_t columns, const float *pRaw);
 
         matrix(matrix &&other) noexcept;
 
@@ -30,7 +30,7 @@ namespace uml
         float &at(size_t iRow, size_t iCol);
 
         float get_sum();
-
+        void set_from_raw(const float* pRawMatrix);
         matrix transpose();
 
         void set(float val);
@@ -56,7 +56,7 @@ namespace uml
         [[nodiscard]] float alg_complement(size_t i, size_t j) const;
 
         [[nodiscard]] float det() const;
-
+        [[nodiscard]] const float* raw() const;
         matrix &operator=(const matrix &other);
 
         matrix &operator=(matrix &&other) noexcept;
diff --git a/source/matrix.cpp b/source/matrix.cpp
index 944390b..bb511ff 100644
--- a/source/matrix.cpp
+++ b/source/matrix.cpp
@@ -50,7 +50,7 @@ namespace uml
                 at(i, j) = other.at(i, j);
     }
 
-    matrix::matrix(const size_t rows, const size_t columns, float *pRaw)
+    matrix::matrix(const size_t rows, const size_t columns, const float *pRaw)
     {
         m_rows = rows;
         m_columns = columns;
@@ -285,4 +285,15 @@ namespace uml
                               {screenWidth / 2.f, screenHeight / 2.f,  0.f, 1.f},
                       });
     }
+
+    const float * matrix::raw() const
+    {
+        return m_pData.get();
+    }
+
+    void matrix::set_from_raw(const float *pRawMatrix)
+    {
+        for (size_t i = 0; i < m_columns*m_rows; ++i)
+            at(i / m_rows, i % m_columns) = pRawMatrix[i];
+    }
 }
\ No newline at end of file