/**
* Allows SMatrices "multiplication" as an operation
* Throws an exception if formats do not match
*/
public static SMatrix operator *(SMatrix a, SMatrix b)
{
if (a.cols == b.rows)
{
// Pass through every row and every column
SMatrix result = new SMatrix(a.rows, b.cols);
for (int row = 0; row < a.rows; row++)
{
for (int col = 0; col < b.cols; col++)
{
// For each element in row a multiply with col b
float total = 0;
for (int row_b = 0; row_b < b.rows; row_b++)
{
total += a.data[row, row_b] * b.data[row_b, col];
}
result.set(row, col, total);
}
}
return(result);
}
else
{
throw new InvalidOperationException("Cannot perform multiplication on SMatrices of different sizes.");
}
}
/**
* Allows SMatrix "multiplication" with a salar as an operation, but the scalar is first
*/
public static SMatrix operator *(float b, SMatrix a)
{
SMatrix result = new SMatrix(a.rows, a.cols);
for (int row = 0; row < a.rows; row++)
{
for (int col = 0; col < a.cols; col++)
{
result.set(row, col, (a.data[row, col] * b));
}
}
return(result);
}
/**
* Allows SMatrices "subtraction" as an operation
* Throws an exception if the formats do not match
*/
public static SMatrix operator -(SMatrix a, SMatrix b)
{
if (a.cols == b.cols && a.rows == b.rows)
{
// Pass through every row and every column
SMatrix result = new SMatrix(a.rows, b.cols);
for (int row = 0; row < a.rows; row++)
{
for (int col = 0; col < a.cols; col++)
{
result.set(row, col, (a.data[row, col] - b.data[row, col]));
}
}
return(result);
}
else
{
throw new InvalidOperationException("Cannot perform addition on SMatrices of different sizes.");
}
}
void Start()
{
// ----------------- Demonstrates the use of JSON_decode_file -----------------
// Extract most structures of JSON without needing to make an Object class structure (somewhat dynamic)
JSONNode_Result data_result = IO_Utils.JSON_decode_file("Assets/Unity_Utils/examples/example_json.txt");
Debug.Log(data_result.correct); // Shows true if the file exists and is right
Debug.Log(data_result.error); // Shows an empty string if no error
Debug.Log(data_result.value["Random_Array"][0]); // Displays an int (12)
Debug.Log(data_result.value["Random_Array"][1]); // Displays a string ("Apple")
Debug.Log(data_result.value["Random_Array"][2]); // Displays a float (0.25F)
Debug.Log(data_result.value["Random_Array"][3][2]); // Displays a sub array element (2)
// ----------------- List shuffling -----------------
List <int> int_list = new List <int>()
{
1, 2, 3, 4, 5, 6, 7, 8, 9, 0
};
List <string> string_list = new List <string>()
{
"1", "2", "3", "4", "5", "6", "7", "8", "9", "0"
};
// Directly shuffle the list and change its value
int_list.shuffle();
// Shuffle a list and get its value as a return without affecting the original list
List <string> new_string_list = Data_Utils.shuffle_list(string_list);
// ----------------- Demonstrates the use of SMatrix -----------------
// How to create a matrix with a format but no direct values (All 0 for now)
SMatrix a_matrix = new SMatrix(5, 5);
// How to directly create a matrix with values
a_matrix = new SMatrix(new float[5, 5] {
{ 2, 1, 5, -1, 6 },
{ 1, 4, 0, 3, 7 },
{ 1, 0, 0, -7, 9 },
{ 3, 2, 1, 0, 8 },
{ 1, 1, 0, 3, 4 }
});
SMatrix b_matrix = new SMatrix(new float[5, 5] {
{ 5, 3, 4, 2, -1 },
{ 2, 2, 3, 5, 5 },
{ 8, 10, 2, 36, 2 },
{ 7, 1, 1, 1, 3 },
{ 0, 3, 4, 8, 6 }
});
// Set a value of the SMatrix
b_matrix.set(2, 2, 5F);
// Shows simple operations for Matrices
SMatrix add_matrix = a_matrix + b_matrix;
SMatrix sub_matrix = a_matrix - b_matrix;
SMatrix mult_matrix = a_matrix * b_matrix;
// Multiply or divide the matrix with scalars. Note that for the division, the scalar comes after.
SMatrix scalar_after_matrix = a_matrix * 5F;
SMatrix scalar_before_matrix = 5F * a_matrix;
SMatrix scalar_divide_matrix = a_matrix / 5F;
// Join the matrices into one
SMatrix vert_matrix = SMatrix.join_vertical(a_matrix, b_matrix);
SMatrix hor_matrix = SMatrix.join_horizontal(a_matrix, b_matrix);
// Directly transpose the matrix
a_matrix.transpose();
// Transpose a matrix without changing its values, but instead get it as a new matrix
SMatrix transposed_a_matrix = SMatrix.transpose(a_matrix);
// Directly normalize the matrix
a_matrix.normalize();
// Normalize a matrix without changing its values, but instead get it as a new matrix
SMatrix normalized_a_matrix = SMatrix.normalize(a_matrix);
// Get the determinant of the matrix if any
float determinant = a_matrix.det();
// Log the matrix in the console
a_matrix.log();
// Get the string representing the matrix and log it in the console
string read = a_matrix.read();
Debug.Log(read);
}