public void RoundToArc_ZeroVector_RemainsZero()
{
// Arrange
Vector2 zero = Vector2.zero;
// Act
Vector2 roundedZero = zero.RoundToNearestArc(2, 0.0f);
Assert.True(Mathf.Approximately(roundedZero.magnitude, 0.0f),
"Magnitude of zero vector changed during rounding. Expected " + zero.magnitude + ", result was " + roundedZero.magnitude);
}
public void RoundToArc_TwoArcs_89DegreeRoundsToRight()
{
// Arrange
float angle = 89.0f;
Vector2 oneDegree = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
Vector2 right = Vector2.right;
// Act
Vector2 rounded = oneDegree.RoundToNearestArc(2);
Assert.True(rounded.Equals(right), "Created: " + rounded + " Expected: " + right);
}
public void RoundToArc_FourArcsRotated45_179DegreesRoundsTopLeft()
{
// Arrange
float angle = 179.0f;
Vector2 angleAsVector = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
Vector2 topLeft = new Vector2(Mathf.Cos(135 * Mathf.Deg2Rad), Mathf.Sin(135 * Mathf.Deg2Rad));
// Act
Vector2 rounded = angleAsVector.RoundToNearestArc(4, -45.0f);
Assert.True(rounded.Equals(topLeft), "Created: " + rounded + " Expected: " + topLeft);
}
public void RoundToArc_FourArcs_Neg179DegreeRoundsToLeft()
{
// Arrange
float angle = -179.0f;
Vector2 angleAsVector = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
Vector2 left = -Vector2.right;
// Act
Vector2 rounded = angleAsVector.RoundToNearestArc(4);
Assert.True(rounded.Equals(left), "Created: " + rounded + " Expected: " + left);
}
public void RoundToArc_TwoArcsWith90DegreeRotation_1DegreeRoundsToUp()
{
// Arrange
float angle = 1.0f;
Vector2 angleAsVector = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
Vector2 up = Vector2.up;
// Act
Vector2 rounded = angleAsVector.RoundToNearestArc(2, 90.0f);
Assert.True(rounded.Equals(up), "Created: " + rounded + " Expected: " + up);
}
/// <summary>
/// Rounds the input vector to the closest cardinal direction and returns the rounded result.
/// </summary>
/// <returns>The nearest cardinal direction</returns>
/// <param name="vectorToRound">Vector to round.</param>
public static Vector2 RoundToCardinals(this Vector2 vectorToRound)
{
return(vectorToRound.RoundToNearestArc(4));
}
public void RoundToArc_TwoArcs_91DegreeRoundsToLeft()
{
// Arrange
float angle = 91.0f;
Vector2 angleAsVector = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
Vector2 left = -Vector2.right;
// Act
Vector2 rounded = angleAsVector.RoundToNearestArc(2);
Assert.True(rounded.Equals(left), "Created: " + rounded + " Expected: " + left);
}
public void RoundToArc_TwoArcs_89DegreeRoundsToRight()
{
// Arrange
float angle = 89.0f;
Vector2 oneDegree = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
Vector2 right = Vector2.right;
// Act
Vector2 rounded = oneDegree.RoundToNearestArc(2);
Assert.True(rounded.Equals(right), "Created: " + rounded + " Expected: " + right);
}
public void RoundToArc_TwoArcsWith90DegreeRotation_1DegreeRoundsToUp()
{
// Arrange
float angle = 1.0f;
Vector2 angleAsVector = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
Vector2 up = Vector2.up;
// Act
Vector2 rounded = angleAsVector.RoundToNearestArc(2, 90.0f);
Assert.True(rounded.Equals(up), "Created: " + rounded + " Expected: " + up);
}
public void RoundToArc_FourArcsRotated45_179DegreesRoundsTopLeft()
{
// Arrange
float angle = 179.0f;
Vector2 angleAsVector = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
Vector2 topLeft = new Vector2(Mathf.Cos(135 * Mathf.Deg2Rad), Mathf.Sin(135 * Mathf.Deg2Rad));
// Act
Vector2 rounded = angleAsVector.RoundToNearestArc(4, -45.0f);
Assert.True(rounded.Equals(topLeft), "Created: " + rounded + " Expected: " + topLeft);
}
