public static double Distance(Vector v1, Vector v2)
{
double deltaX = v1.x - v2.x;
double deltaY = v1.y - v2.y;
double deltaZ = v1.z - v2.z;
return Math.Sqrt(deltaX * deltaX + deltaY * deltaY + deltaZ * deltaZ);
}
public void TestVectorPlus()
{
Vector v1 = new Vector(1, 2, 3);
Vector v2 = new Vector(3, 2, 1);
Vector result = v1 + v2;
Vector expect = new Vector(4, 4, 4);
Assert.AreEqual(expect, result);
}
public void TestVectorMinusSubstitute()
{
Vector v1 = new Vector(5, 4, 3);
Vector v2 = new Vector(3, 2, 1);
v1 -= v2;
Vector expect = new Vector(2, 2, 2);
Assert.AreEqual(expect, v1);
}
public void TestVectorMinus()
{
Vector v1 = new Vector(5, 4, 3);
Vector v2 = new Vector(3, 2, 1);
Vector result = v1 - v2;
Vector expect = new Vector(2, 2, 2);
Assert.AreEqual(expect, result);
}
public void TestVectorMag()
{
Vector v1 = new Vector(0, 3, 4);
double result = LinearUtil.VectorMag(v1);
Assert.AreEqual(5, result);
}
public void TestVectorDotProduct()
{
Vector v1 = new Vector(1, 2, 3);
Vector v2 = new Vector(3, 2, 1);
double result = v1 * v2;
Assert.AreEqual(10, result);
}
public void TestVectorProductSubstitute()
{
Vector v1 = new Vector(1, 2, 3);
v1 *= 3;
Vector expect = new Vector(3, 6, 9);
Assert.AreEqual(expect, v1);
}
public void TestNormarize()
{
Vector vector = new Vector(12, -5, 0);
vector.Normalize();
// Vector answer = new Vector(0.923, -0.385, 0);
// Assert.AreEqual(answer, vector);
Assert.AreEqual(0.923, Math.Round(vector.x, 3));
Assert.AreEqual(-0.385, Math.Round(vector.y, 3));
Assert.AreEqual(0, vector.z);
}
public void TestVectorDivByScalar()
{
Vector v1 = new Vector(27, 18, 9);
Vector result = v1 / 3;
Vector expect = new Vector(9, 6, 3);
Assert.AreEqual(expect, result);
}
public void TestDistance()
{
Vector v1 = new Vector(5, 0, 0);
Vector v2 = new Vector(-1, 8, 0);
double result = LinearUtil.Distance(v1, v2);
Assert.AreEqual(10, result);
}
public void TestIndexer()
{
double[] src = new double[]{0, 1, 2};
Vector v1 = new Vector(src);
Assert.AreEqual(0, v1[0]);
Assert.AreEqual(1, v1[1]);
Assert.AreEqual(2, v1[2]);
}
public void TestCrossProduct()
{
Vector v1 = new Vector(1, 3, 4);
Vector v2 = new Vector(2, -5, 8);
Vector result = LinearUtil.CrossProduct(v1, v2);
Assert.AreEqual(new Vector(44, 0, -11), result);
}
private static Vector Product(Vector v1, double scalar)
{
return new Vector(v1.x * scalar, v1.y * scalar, v1.z * scalar);
}
public static double VectorMag(Vector v)
{
return Math.Sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
}
public void TestVectorPlusSubstitute()
{
Vector v1 = new Vector(1, 2, 3);
Vector v2 = new Vector(3, 2, 1);
v1 += v2;
Vector expect = new Vector(4, 4, 4);
Assert.AreEqual(expect, v1);
}
public void TestVectorDivByZero()
{
Vector v1 = new Vector(27, 18, 9);
Console.WriteLine(v1 / 0);
}
public void TestVectorProductByScalar()
{
Vector v1 = new Vector(1, 2, 3);
Vector result = v1 * 3;
Vector result2 = 3 * v1;
Vector expect = new Vector(3, 6, 9);
Assert.AreEqual(expect, result);
Assert.AreEqual(expect, result2);
}
public void TestVectorDivSubstitute()
{
Vector v1 = new Vector(27, 18, 9);
v1 /= 3;
Vector expect = new Vector(9, 6, 3);
Assert.AreEqual(expect, v1);
}
public void TestVectorTurnOver()
{
Vector v1 = new Vector(1, 1, 1);
Vector result = -v1;
Vector expect = new Vector(-1, -1, -1);
Assert.AreEqual(expect, result);
}
public static Vector CrossProduct(Vector v1, Vector v2)
{
return new Vector(v1.y * v2.z - v1.z * v2.y, v1.z * v2.x - v1.x * v2.z, v1.x * v2.y - v1.y * v2.x);
}