public void MinDistanceToLineSegment()
{
Real expected;
Real returned;
V2 s;
V2 p1, p2;
// --- TEST ---
// p1=p2=s=0
s = new V2(0.0f, 0.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(0.0f, 0.0f);
expected = 0.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s on p1
s = new V2(0.0f, 0.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 0.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s on p2
s = new V2(1.0f, 0.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 0.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s in mid of p1p2
s = new V2(0.0f, 0.5f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 0.5f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// p1=p2
s = new V2(0.0f, 0.0f);
p1 = new V2(1.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 1.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s on extension p1p2, closest p2
s = new V2(2.0f, 0.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 1.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s on extension p2p1, closest p1
s = new V2(-1.0f, 0.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 1.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s perpendicular, mid p1p2 closest
s = new V2(0.5f, 0.5f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 0.5f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s perpendicular, p1 closest +
s = new V2(0.0f, 1.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 1.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s perpendicular, p1 closest -
s = new V2(0.0f, -1.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 1.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s perpendicular, p2 closest +
s = new V2(1.0f, 1.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 1.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s perpendicular, p2 closest -
s = new V2(1.0f, -1.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = 1.0f;
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s 45° to p2 closest +
s = new V2(2.0f, 1.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = (Real)Math.Sqrt(2.0f);
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
// --- TEST ---
// s 45° to p2 closest -
s = new V2(2.0f, -1.0f);
p1 = new V2(0.0f, 0.0f);
p2 = new V2(1.0f, 0.0f);
expected = (Real)Math.Sqrt(2.0f);
returned = s.MinDistanceToLineSegment(p1, p2);
Assert.AreEqual(expected, returned, EPSILON);
}
