public void GetRow()
{
Matrix22D m = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
Assert.AreEqual(new Vector2D(1.0, 2.0), m.GetRow(0));
Assert.AreEqual(new Vector2D(3.0, 4.0), m.GetRow(1));
}
public void SetRow()
{
Matrix22D m = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
m.SetRow(0, new Vector2D(0.1, 0.2));
Assert.AreEqual(new Vector2D(0.1, 0.2), m.GetRow(0));
Assert.AreEqual(new Vector2D(3.0, 4.0), m.GetRow(1));
m.SetRow(1, new Vector2D(0.4, 0.5));
Assert.AreEqual(new Vector2D(0.1, 0.2), m.GetRow(0));
Assert.AreEqual(new Vector2D(0.4, 0.5), m.GetRow(1));
}
public void MultiplyVector()
{
Vector2D v = new Vector2D(2.34, 3.45);
Assert.AreEqual(v, Matrix22D.Multiply(Matrix22D.Identity, v));
Assert.AreEqual(Vector2D.Zero, Matrix22D.Multiply(Matrix22D.Zero, v));
Matrix22D m = new Matrix22D(12, 23, 45, 67);
Assert.IsTrue(Vector2D.AreNumericallyEqual(v, Matrix22D.Multiply(m * m.Inverse, v)));
for (int i = 0; i < 2; i++)
{
Assert.AreEqual(Vector2D.Dot(m.GetRow(i), v), Matrix22D.Multiply(m, v)[i]);
}
}
public void MultiplyMatrix()
{
Matrix22D m = new Matrix22D(12, 23, 45, 67);
Assert.AreEqual(Matrix22D.Zero, Matrix22D.Multiply(m, Matrix22D.Zero));
Assert.AreEqual(Matrix22D.Zero, Matrix22D.Multiply(Matrix22D.Zero, m));
Assert.AreEqual(m, Matrix22D.Multiply(m, Matrix22D.Identity));
Assert.AreEqual(m, Matrix22D.Multiply(Matrix22D.Identity, m));
Assert.IsTrue(Matrix22D.AreNumericallyEqual(Matrix22D.Identity, Matrix22D.Multiply(m, m.Inverse)));
Assert.IsTrue(Matrix22D.AreNumericallyEqual(Matrix22D.Identity, Matrix22D.Multiply(m.Inverse, m)));
Matrix22D m1 = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
Matrix22D m2 = new Matrix22D(12, 23, 45, 67);
Matrix22D result = Matrix22D.Multiply(m1, m2);
for (int column = 0; column < 2; column++)
{
for (int row = 0; row < 2; row++)
{
Assert.AreEqual(Vector2D.Dot(m1.GetRow(row), m2.GetColumn(column)), result[row, column]);
}
}
}
public void GetRowException2()
{
Matrix22D m = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
m.GetRow(2);
}
public void SetRow()
{
Matrix22D m = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
m.SetRow(0, new Vector2D(0.1, 0.2));
Assert.AreEqual(new Vector2D(0.1, 0.2), m.GetRow(0));
Assert.AreEqual(new Vector2D(3.0, 4.0), m.GetRow(1));
m.SetRow(1, new Vector2D(0.4, 0.5));
Assert.AreEqual(new Vector2D(0.1, 0.2), m.GetRow(0));
Assert.AreEqual(new Vector2D(0.4, 0.5), m.GetRow(1));
}
public void MultiplyVectorOperator()
{
Vector2D v = new Vector2D(2.34, 3.45);
Assert.AreEqual(v, Matrix22D.Identity * v);
Assert.AreEqual(Vector2D.Zero, Matrix22D.Zero * v);
Matrix22D m = new Matrix22D(12, 23, 45, 67);
Assert.IsTrue(Vector2D.AreNumericallyEqual(v, m * m.Inverse * v));
for (int i = 0; i < 2; i++)
Assert.AreEqual(Vector2D.Dot(m.GetRow(i), v), (m * v)[i]);
}
public void MultiplyMatrixOperator()
{
Matrix22D m = new Matrix22D(12, 23, 45, 67);
Assert.AreEqual(Matrix22D.Zero, m * Matrix22D.Zero);
Assert.AreEqual(Matrix22D.Zero, Matrix22D.Zero * m);
Assert.AreEqual(m, m * Matrix22D.Identity);
Assert.AreEqual(m, Matrix22D.Identity * m);
Assert.IsTrue(Matrix22D.AreNumericallyEqual(Matrix22D.Identity, m * m.Inverse));
Assert.IsTrue(Matrix22D.AreNumericallyEqual(Matrix22D.Identity, m.Inverse * m));
Matrix22D m1 = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
Matrix22D m2 = new Matrix22D(12, 23, 45, 67);
Matrix22D result = m1 * m2;
for (int column = 0; column < 2; column++)
for (int row = 0; row < 2; row++)
Assert.AreEqual(Vector2D.Dot(m1.GetRow(row), m2.GetColumn(column)), result[row, column]);
}
public void GetRowException2()
{
Matrix22D m = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
m.GetRow(2);
}
public void GetRow()
{
Matrix22D m = new Matrix22D(columnMajor, MatrixOrder.ColumnMajor);
Assert.AreEqual(new Vector2D(1.0, 2.0), m.GetRow(0));
Assert.AreEqual(new Vector2D(3.0, 4.0), m.GetRow(1));
}
