/// <summary>
/// Finds a random point within the spherical annulus by drawing a
/// vector whose magnitude is between `r` and `2r` at a random angle.
/// </summary>
/// <param name="origin">donut center</param>
/// <returns>random sample</returns>
private Vertex getRandomPointAround(Vertex origin)
{
float magnitude = Random.Range(minDistance, maxDistance);
float angle = Random.Range(0f, 360f);
return(new Vertex(Mathy.getEndpointOfLineRotation(origin.x, origin.y, angle, magnitude)));
}
static void Main(string[] args)
{
Mathy m = new Mathy();
Console.WriteLine(m.Add(2, 4));
Console.WriteLine(m.Add2(10, 100, 1000));
Console.ReadLine();
}
public void testGetAngleOfRotation90Deg()
{
double x1 = 0;
double y1 = 0;
double x2 = 0;
double y2 = 5;
float result = (float)Mathy.getAngleOfRotation(x1, y1, x2, y2) * Mathf.Rad2Deg;
Assert.AreEqual(90.0f, result);
}
public void testGetEndpointOfLineRotationQuadrant4Unsigned()
{
double theta = 315.0 * Mathf.Deg2Rad;
double x = 0;
double y = 0;
float distance = 5;
double[] result = Mathy.getEndpointOfLineRotation(x, y, theta, distance);
// Check separately due to floating point precision, within 5 points
Assert.AreEqual(5.0, result[0], 5);
Assert.AreEqual(-5.0, result[1], 5);
}
public void testGetAngleOfRotationInQuadrant4()
{
double x1 = 0;
double y1 = 0;
double x2 = 5;
double y2 = -5;
float result = (float)Mathy.getAngleOfRotation(x1, y1, x2, y2) * Mathf.Rad2Deg;
Assert.GreaterOrEqual(result, -90);
Assert.LessOrEqual(result, 0);
Assert.AreEqual(-45.0f, result);
}
public void testFindIntersectionParallel()
{
float ax = 0;
float ay = 0;
float bx = 5;
float by = 0;
float cx = 0;
float cy = 5;
float dx = 5;
float dy = 5;
double[] result = Mathy.findIntersection(ax, ay, bx, by, cx, cy, dx, dy);
Assert.IsNull(result);
}
public void testFindIntersectionNotOnLineSegments()
{
float ax = -5;
float ay = -5;
float bx = -1;
float by = -1;
float cx = 0;
float cy = 0;
float dx = 5;
float dy = -5;
double[] result = Mathy.findIntersection(ax, ay, bx, by, cx, cy, dx, dy);
Assert.IsNull(result);
}
public void testFindIntersectionCross()
{
// Q3 -> Q1 across origin
float ax = -5;
float ay = -5;
float bx = 5;
float by = 5;
// Q2 -> Q4 across origin
float cx = -5;
float cy = 5;
float dx = 5;
float dy = -5;
double[] result = Mathy.findIntersection(ax, ay, bx, by, cx, cy, dx, dy);
Assert.IsNotNull(result);
Assert.AreEqual(new double[] { 0, 0 }, result);
}
