From f26f97b06aa071009dcb11f618d5f9d03c201156 Mon Sep 17 00:00:00 2001
From: Yann Herklotz <ymherklotz@gmail.com>
Date: Thu, 8 Jun 2017 10:12:20 +0100
Subject: Continuing the matrix class

---
 include/YAGE/Math/matrix.hpp | 156 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 149 insertions(+), 7 deletions(-)

(limited to 'include')

diff --git a/include/YAGE/Math/matrix.hpp b/include/YAGE/Math/matrix.hpp
index 2ada55eb..889db336 100644
--- a/include/YAGE/Math/matrix.hpp
+++ b/include/YAGE/Math/matrix.hpp
@@ -1,7 +1,9 @@
 #ifndef YAGE_MATH_MATRIX_HPP
 #define YAGE_MATH_MATRIX_HPP
 
-#include <memory>
+#include <algorithm>
+#include <exception>
+#include <iostream>
 #include <vector>
 
 namespace yage
@@ -15,15 +17,20 @@ namespace detail
 template<int Rows, int Cols, class Type> class Row
 {
 private:
-	std::shared_ptr<Matrix<Rows, Cols, Type>> parent_;
+	Matrix<Rows, Cols, Type> *parent_;
 	int index_;
 
 public:
-	Row<Rows, Cols, Type>(std::shared_ptr<Matrix<Rows, Cols, Type>> parent, int index) :
+	Row<Rows, Cols, Type>(Matrix<Rows, Cols, Type> *parent, int index) :
 		parent_(parent), index_(index)
 	{}
 
-	Type &operator[](int col)
+	Type& operator[](int col)
+	{
+		return parent_->data_[index_*Cols+col];
+	}
+
+	const Type& operator[](int col) const
 	{
 		return parent_->data_[index_*Cols+col];
 	}
@@ -34,19 +41,154 @@ public:
 template<int Rows=4, int Cols=4, class Type=double> class Matrix
 {
 	friend class detail::Row<Rows, Cols, Type>;
-private:
+protected:
 	std::vector<Type> data_;
 
 public:
 	Matrix<Rows, Cols, Type>() : data_(Rows*Cols) {}
-	Matrix<Rows, Cols, Type>(int rows, int cols) : data_(rows*cols) {}
 
 	detail::Row<Rows, Cols, Type> operator[](int row)
 	{
-		return detail::Row<Rows, Cols, Type>(std::make_shared<Matrix<Rows, Cols, Type>>(*this), row);
+		return detail::Row<Rows, Cols, Type>(this, row);
+	}
+
+	Matrix<Rows, Cols, Type>& operator=(const Matrix<Rows, Cols, Type> &other)
+	{
+		if(this!=&other)
+		{
+			data_=other.data_;
+		}
+		return *this;
+	}
+
+	Matrix<Rows, Cols, Type>& operator+=(const Matrix<Rows, Cols, Type> &rhs)
+	{
+		std::vector<Type> out;
+		out.reserve(data_.size());
+		std::transform(data_.begin(), data_.end(), rhs.data_.begin(), std::back_inserter(out),
+		               [] (Type a, Type b) {
+			               return a+b;
+		               });
+		data_=std::move(out);
+		return *this;
+	}
+
+	friend Matrix<Rows, Cols, Type> operator+(Matrix<Rows, Cols, Type> lhs,
+	                                          const Matrix<Rows, Cols, Type> &rhs)
+	{
+		lhs+=rhs;
+		return lhs;
+	}
+
+	Matrix<Rows, Cols, Type>& operator-=(const Matrix<Rows, Cols, Type> &rhs)
+	{
+		std::vector<Type> out;
+		out.reserve(data_.size());
+		std::transform(data_.begin(), data_.end(), rhs.begin(), std::back_inserter(out),
+		               [] (Type a, Type b) {
+			               return a-b;
+		               });
+		data_=std::move(out);
+		return *this;
+	}
+
+	friend Matrix<Rows, Cols, Type> operator-(Matrix<Rows, Cols, Type> lhs,
+	                                          const Matrix<Rows, Cols, Type> &rhs)
+	{
+		lhs-=rhs;
+		return lhs;
+	}
+
+	friend std::ostream& operator<<(std::ostream &os, const Matrix<Rows, Cols, Type> &mat)
+	{
+		os<<'[';
+		for(std::size_t i=0; i<mat.data_.size()-1; ++i)
+		{
+			if(i%Cols == 0 && i!=0)
+			{
+				os<<"]\n[";
+			}
+			
+			if((i+1)%Cols == 0)
+			{
+				os<<mat.data_[i];
+			}
+			else
+			{
+				os<<mat.data_[i]<<" ";
+			}
+		}
+		os<<mat.data_[mat.data_.size()-1]<<"]";
+		return os;
+	}
+};
+
+template<int Rows=2, class Type=double> class Vector : public Matrix<Rows, 1, Type>
+{
+public:
+	Vector<Rows, Type>() : Matrix<Rows, 1, Type>() {}
+
+	Type& operator[](int col)
+	{
+		return this->data_[col];
+	}
+
+	const Type& operator[](int col) const
+	{
+		return this->data_[col];
 	}
+
+	
 };
 
+template<class Type=double> class Vector2 : public Vector<2, Type>
+{
+public:
+	Vector2<Type>() : Vector<2, Type>() {}
+
+	Type& x()
+	{
+		return this->data_[0];
+	}
+
+	const Type& x() const
+	{
+		return this->data_[0];
+	}
+	
+	Type& y()
+	{
+		return this->data_[1];
+	}
+
+	const Type& y() const
+	{
+		return this->data_[1];
+	}	
+};
+
+typedef Vector2<double> Vector2d;
+
+namespace matrix
+{
+
+template<int M, int N, int P, int Q, class T>
+Matrix<M, Q, T> multiply(const Matrix<M, N, T> &m1, const Matrix<P, Q, T> &m2)
+{
+	if(N!=P)
+	{
+		throw std::runtime_error("Matrices don't have the right dimensions for multiplication");
+	}
+	
+	Matrix<M, Q, T> res;
+
+	
+
+	return res;
+}
+
+} // vector
+
 } // yage
 
 #endif
-- 
cgit