{
}
-
Vector::Vector(Vector tail, Vector head): x(head.x - tail.x), y(head.y - tail.y), z(head.z - tail.z)
{
}
+Vector::Vector(const Vector &v): x(v.x), y(v.y), z(v.z)
+{
+}
// Create vector from angle + length (2D; z is set to zero)
void Vector::SetAngleAndLength(double angle, double length)
z = 0;
}
-
Vector Vector::operator=(Vector const v)
{
x = v.x, y = v.y, z = v.z;
return *this;
}
-
Vector Vector::operator+(Vector const v)
{
return Vector(x + v.x, y + v.y, z + v.z);
}
-
Vector Vector::operator-(Vector const v)
{
return Vector(x - v.x, y - v.y, z - v.z);
}
-
// Unary negation
Vector Vector::operator-(void)
return Vector(-x, -y, -z);
}
-
// Vector x constant
Vector Vector::operator*(double const v)
return Vector(x * v, y * v, z * v);
}
-
// Vector x constant
Vector Vector::operator*(float const v)
return Vector(x * v, y * v, z * v);
}
-
// Vector / constant
Vector Vector::operator/(double const v)
return Vector(x / v, y / v, z / v);
}
-
// Vector / constant
Vector Vector::operator/(float const v)
return Vector(x / v, y / v, z / v);
}
-
// Vector (cross) product
Vector Vector::operator*(Vector const v)
return Vector((y * v.z) - (z * v.y), (z * v.x) - (x * v.z), (x * v.y) - (y * v.x));
}
-
// Dot product
double Vector::Dot(Vector const v)
return (x * v.x) + (y * v.y) + (z * v.z);
}
-
// Vector x constant, self assigned
Vector& Vector::operator*=(double const v)
return *this;
}
-
// Vector / constant, self assigned
Vector& Vector::operator/=(double const v)
return *this;
}
-
// Vector + constant, self assigned
Vector& Vector::operator+=(double const v)
return *this;
}
-
// Vector - vector, self assigned
Vector& Vector::operator-=(Vector const v)
return *this;
}
-
// Vector - constant, self assigned
Vector& Vector::operator-=(double const v)
return *this;
}
-
// Check for equality
bool Vector::operator==(Vector const v)
{
return (x == v.x && y == v.y && z == v.z ? true : false);
}
-
// Check for inequality
bool Vector::operator!=(Vector const v)
{
return (x != v.x || y != v.y || z != v.z ? true : false);
}
-
Vector Vector::Unit(void)
{
double mag = Magnitude();
return Vector(x / mag, y / mag, z / mag);
}
-
double Vector::Magnitude(void)
{
return sqrt((x * x) + (y * y) + (z * z));
}
-
double Vector::Angle(void)
{
// acos returns a value between zero and TAU/2, which means we don't know
return correctedAngle;
}
-
bool Vector::isZero(double epsilon/*= 1e-6*/)
{
return (fabs(x) < epsilon && fabs(y) < epsilon && fabs(z) < epsilon ? true : false);
}
-
// Class methods
/*static*/ double Vector::Dot(Vector v1, Vector v2)
return (v1.x * v2.x) + (v1.y * v2.y) + (v1.z * v2.z);
}
-
/*static*/ double Vector::Magnitude(Vector v1, Vector v2)
{
double xx = v1.x - v2.x;
double yy = v1.y - v2.y;
double zz = v1.z - v2.z;
+
return sqrt((xx * xx) + (yy * yy) + (zz * zz));
}
-
//
// Convenience function
//
return Vector(p1, p2).Angle();
}
-
// Returns the parameter of a point in space to this vector. If the parameter
// is between 0 and 1, the normal of the vector to the point is on the vector.
// Note: v1 is the tail, v2 is the head of the line (vector).
double magnitude = lineSegment.Magnitude();
Vector pointSegment = p - tail;
double t = lineSegment.Dot(pointSegment) / (magnitude * magnitude);
+
return t;
}
-
// Return the 2D normal to the linesegment formed by the passed in points.
// The normal thus calculated should rotate anti-clockwise.
/*static*/ Vector Vector::Normal(Vector tail, Vector head)
{
Vector v = (head - tail).Unit();
+
return Vector(-v.y, v.x);
}
-
/*static*/ double Vector::AngleBetween(Vector a, Vector b)
{
// This is done using the following formula:
return acos(a.Dot(b) / (a.Magnitude() * b.Magnitude()));
}
-
projects / architektonas / blobdiff