/// <summary>
/// operate-->
/// </summary>
public static MyMat mul(MyMat left, MyMat right)
{
if (left.cols == 0 || left.rows == 0 || right.cols == 0 || right.rows == 0)
{
Debug.Print(" MyMat mul : " + left.cols + " " + left.rows + " " + right.cols + " " + right.rows);
return(MyMat.NULL());
}
if (left.cols != right.rows)
{
Debug.Print(" MyMat mul : left.cols != right.rows");
return(MyMat.NULL());
}
MyMat output = new MyMat(left.rows, right.cols);
for (int i = 0; i < output.rows; i++)
{
for (int j = 0; j < output.cols; j++)
{
output[i, j] = 0;
for (int k = 0; k < left.cols; k++)
{
output[i, j] += left[i, k] * right[k, j];
}
}
}
return(output);
}
public static MyMat MIRROR(double rad)
{
MyMat output = new MyMat(2, 2);
output[0, 0] = Math.Cos(2 * rad);
output[1, 0] = Math.Sin(2 * rad);
output[0, 1] = output[1, 0];
output[1, 1] = -1.0 * output[0, 0];
return(output);
}
public static MyMat ROTATE(double rad)
{
MyMat output = new MyMat(2, 2);
output[0, 0] = Math.Cos(rad);
output[1, 0] = Math.Sin(rad);
output[0, 1] = -1.0 * output[1, 0];
output[1, 1] = output[0, 0];
return(output);
}
