New Class question

I have what is probably a very simple question


I have some work to do with points and lines ( not drawing just from a math point of view)


There is already an object called point

i want to make a new class called Line where i would initializes it with two points? The end game is to then be able to run a method or make a property where i could get information out of it about the line the two points create


Thanks

Crash893

correction Constructor is the word i was looking for ( that's probably why i couldn't find what i was looking for)


Here is my code thus far (it doesn't do anything yet but please let me know if im doing anything wrong ( or right))

c# Code:

using System.Drawing;
using System;
namespace WindowsFormsApplication1
{
    class Line
    {
        Point aP1 = new Point();
        Point aP2 = new Point();
 
        public Line(Point P1, Point P2)
        {
            aP1 = P1;
            aP2 = P2;
        
        }
        public Point GetRandP()
        {
            Point P3 = new Point();
            Random RandP = new Random();
            P3.X = RandP.Next();
            P3.Y= RandP.Next();
            return P3;
        }
    }
}

here is the code in the form

c# Code:

Point P1 = new Point();
            P1.X = 8;
            P1.Y = 9;
 
            Point P2 = new Point();
            P1.X = 56;
            P1.Y = 0;
 
            Line L1 = new Line(P1, P2);
 
 
            Point P3 = new Point();
            P3 = L1.GetRandP();

It looks good. Two points is all that takes to construct a line and thats what you take in the constructor, so all is good there.

From an object oriented design point of view though, I would say that the GetRandomP method doesnt really belong in the Line class, as it seems to be totally unrelated the concept of "A line".

If I where you I'd actually create a new class for the Point even though there is already a structure for Point. I would then make the GetRandomP a static method of that class. This would look better from a OO design point of view.

the getrandp mehod is just there for show at this point


The general idea is that i enter two points then i can ask for it retreive a random point along the line that is created so it does have something to do with the that partiular line that i created



the math is shaping up to look something like this

int dist = random.next();
Point pt3 = new Point((pt1.X + dist) * (pt2.X - pt1.X), (pt1.Y + dist) * (pt2.Y - pt1.Y));