public void IsWithinArc_NormalCaseOutsideTolerance_ReturnsTrue()
{
Vector2 diagonalUpRight = new Vector2(1.0f, 1.0f);
Vector2 diagonalUpLeft = new Vector2(-1.0f, 1.0f);
Assert.False(diagonalUpLeft.IsDirectionWithinArc(diagonalUpRight, 179.0f), "DiagonalUpRight and DiagonalUpLeft should be not be within 179 degrees.");
}
public void IsWithinArc_ZeroArcDirection_ReturnsFalse()
{
Vector2 unit = Vector2.up;
Vector2 zeroTarget = Vector2.zero;
Assert.False(unit.IsDirectionWithinArc(zeroTarget, 180.0f), "Zero target vector should never be within degrees.");
}
public void IsWithinArc_ZeroSourceVector_ReturnsFalse()
{
Vector2 zero = Vector2.zero;
Vector2 upTarget = Vector2.up;
Assert.False(zero.IsDirectionWithinArc(upTarget, 180.0f), "Zero source vector should never be within degrees.");
}
/// <summary>
/// If the supplied vector is within the supplied angle of a cardinal direction, this will
/// return the cardinal direction. Otherwise it will just return the same angle.
/// </summary>
/// <returns>The cardinal direction within the specified bias.</returns>
/// <param name="vectorToBias">Vector to bias.</param>
/// <param name="biasAngle">Bias angle.</param>
public static Vector2 BiasToCardinals(this Vector2 vectorToBias, float biasAngle)
{
if (biasAngle > 90.0f)
{
// When biasing by greater than quadrant, bias to nearest 90, not by first vector we test against.
biasAngle = 90.0f;
}
// Can't bias by negative degrees
if (biasAngle < 0.0f)
{
return(vectorToBias);
}
Vector2 biasedVector = vectorToBias;
float assistAngle = biasAngle;
Vector2[] cardinals = new Vector2[]
{
Vector2.right,
Vector2.up,
-Vector2.right,
-Vector2.up
};
foreach (Vector2 direction in cardinals)
{
if (vectorToBias.IsDirectionWithinArc(direction, assistAngle))
{
biasedVector = direction;
// Restore magnitude of original vector
biasedVector *= vectorToBias.magnitude;
break;
}
}
return(biasedVector);
}
public void IsWithinArc_NormalCaseOutsideTolerance_ReturnsTrue()
{
Vector2 diagonalUpRight = new Vector2(1.0f, 1.0f);
Vector2 diagonalUpLeft = new Vector2(-1.0f, 1.0f);
Assert.False(diagonalUpLeft.IsDirectionWithinArc(diagonalUpRight, 179.0f), "DiagonalUpRight and DiagonalUpLeft should be not be within 179 degrees.");
}
public void IsWithinArc_NormalCaseInTolerance_ReturnsTrue()
{
Vector2 diagonalUpLeft = new Vector2(-1.0f, 1.0f);
Assert.True(diagonalUpLeft.IsDirectionWithinArc(Vector2.up, 90.0f), "DiagonalUpLeft should be inside the 90 degree up arc.");
}
public void IsWithinArc_NormalCaseInTolerance_ReturnsTrue()
{
Vector2 diagonalUpLeft = new Vector2(-1.0f, 1.0f);
Assert.True(diagonalUpLeft.IsDirectionWithinArc(Vector2.up, 90.0f), "DiagonalUpLeft should be inside the 90 degree up arc.");
}
