Magnitude of Line

[Invictus]

What is the formula to get the magnitude of a line?? The distance between two 3d points.

[Beer Hunter]

Given points u and v that define the ends of the line-segment, set d = u − v. The length is simply sqrt(d.x*d.x + d.y*d.y + d.z*d.z). Same idea with any number of dimensions.

[Invictus]

Thanks! I should have known that.

Code: Select all

float Vertex::GetMagnitude(Vertex b)
{
   Vertex tmp;
   tmp.x = x - b.x;
   tmp.y = y - b.y;
   tmp.z = z - b.z;
   return sqrt(tmp.x*tmp.x + tmp.y*tmp.y + tmp.z*tmp.z);
}