public void testRayCast()
{
// static tests
Assert.AreEqual(double.PositiveInfinity, testCircle.rayCast(new Ray2D(1.0d, 1.0d, 0.0d, 2.0d)), 0.000005d);
Assert.AreEqual(System.Math.Sqrt(2), testCircle.rayCast(new Ray2D(11.0d, 3.0d, 12.0d, 4.0d)), 0.000005d);
// serial tests
Circle2D randomCircle;
Point2D randomPointOnCircle;
Point2D randomPoint;
double currentRadius;
double xvalue;
double yvalue;
int sector;
int counter = 1000;
do
{
randomCircle = new Circle2D(new Point2D(Util.generateRandomDoubleBetween(-500.0d, 500.0d), Util.generateRandomDoubleBetween(-500.0d, 500.0d)), Util.generateRandomDoubleBetween(0.0d, 200.0d));
currentRadius = randomCircle.getRadius();
xvalue = Util.generateRandomDoubleBetween(0.0d, currentRadius);
yvalue = System.Math.Sqrt(currentRadius * currentRadius - xvalue * xvalue);
sector = Util.randomNumberBetween(1, 4);
switch (sector)
{
case 2:
{
yvalue = -yvalue;
randomPoint = new Point2D(Util.generateRandomDoubleBetween(randomCircle.getCenter().getX() + xvalue, 1000.0d), Util.generateRandomDoubleBetween(-1000.0d, randomCircle.getCenter().getY() + yvalue));
break;
}
case 3:
{
xvalue = -xvalue;
yvalue = -yvalue;
randomPoint = new Point2D(Util.generateRandomDoubleBetween(-1000.0d, randomCircle.getCenter().getX() + xvalue), Util.generateRandomDoubleBetween(-1000.0d, randomCircle.getCenter().getY() + yvalue));
break;
}
case 4:
{
xvalue = -xvalue;
randomPoint = new Point2D(Util.generateRandomDoubleBetween(-1000.0d, randomCircle.getCenter().getX() + xvalue), Util.generateRandomDoubleBetween(randomCircle.getCenter().getY() + yvalue, 1000.0d));
break;
}
default:
{
randomPoint = new Point2D(Util.generateRandomDoubleBetween(randomCircle.getCenter().getX() + xvalue, 1000.0d), Util.generateRandomDoubleBetween(randomCircle.getCenter().getY() + yvalue, 1000.0d));
break;
}
}
randomPointOnCircle = new Point2D(randomCircle.getCenter().getX() + xvalue, randomCircle.getCenter().getY() + yvalue);
// System.Console.Writef("Circle at (%.2f,%.2f), Radius %.2f. Point on Circle: (%.2f,%.2f). Outside Point: (%.2f,%.2f). Distance: %.2f.\n", randomCircle.getCenter().getX(), randomCircle.getCenter().getY(), randomCircle.getRadius(), randomPointOnCircle.getX(), randomPointOnCircle.getY(), randomPoint.getX(), randomPoint.getY(), randomPoint.distance(randomPointOnCircle));
Assert.AreEqual(randomPoint.distance(randomPointOnCircle), randomCircle.rayCast(new Ray2D(randomPoint, randomPoint.vec(randomPointOnCircle))), 0.000005d);
counter -= 1;
} while (counter > 0);
}
public void testTransform()
{
Assert.AreEqual(((Circle2D)testCircle.transform(TransformMatrix2D.UNITY_MATRIX)).getCenter().getX(), testCircle.getCenter().getX(), 0.000005d);
Assert.AreEqual(((Circle2D)testCircle.transform(TransformMatrix2D.UNITY_MATRIX)).getCenter().getY(), testCircle.getCenter().getY(), 0.000005d);
Assert.AreEqual(((Circle2D)testCircle.transform(TransformMatrix2D.UNITY_MATRIX)).getRadius(), testCircle.getRadius(), 0.000005d);
Assert.AreEqual(((Circle2D)testCircle.transform(TransformMatrix2D.translate(4.0d, 5.0d))).getCenter().getX(), 16.0d, 0.000005d);
Assert.AreEqual(((Circle2D)testCircle.transform(TransformMatrix2D.translate(4.0d, 5.0d))).getCenter().getY(), 19.0d, 0.000005d);
Assert.AreEqual(((Ellipse2D)testCircle.transform(TransformMatrix2D.scale(2.0d, 0D))).getHorizontalLength(), 20.0d, 0.000005d);
Assert.AreEqual(((Ellipse2D)testCircle.transform(TransformMatrix2D.scale(0, 0.5d))).getVerticalLength(), 5.0d, 0.000005d);
}