/*Math Tools Library V0.1
 * Copyright 2011 funstuff234 apps
 */

//DOM Test
function showMidPoint(){
            x1 = document.getElementById("x1").value;
            y1 = document.getElementById("y1").value;
            x2 = document.getElementById("x2").value;
            y2 = document.getElementById("y2").value;
            midpoint = findMidPoint(x1, y1, x2, y2);
            document.getElementById("setme").innerHTML = midpoint.xm;
            document.getElementById("setme1").innerHTML = midpoint.ym;
    }



//Algebraic Functions
/* findSlopeStraight ID:A1 - Find the slope of a straight line using two points on the line.
 * @param x1 - x coordinate of first point
 * @param y1 - y coordinate of first point
 * @param x2 - x coordiante of second coordinate
 * @param y2 - y coordinate of second coordinate
 */
function findSlopeStraight(x1, y1, x2, y2){
   return ((y2-y1)/(x2-x1));
}


/* findDistance ID:A2 - Find the distance of two points.
 * @param x1 - x coordinate of first point
 * @param y1 - y coordinate of first point
 * @param x2 - x coordiante of second coordinate
 * @param y2 - y coordinate of second coordinate
 */
function findDistance(x1, y1, x2, y2){
    return Math.sqrt(Math.pow(x2-x1,2)+Math.pow(y2-y1,2));
}

/* findMidpoint ID:A3 - Finds the midpoint of two points.
 * @param x1 - x coordinate of first point
 * @param y1 - y coordinate of first point
 * @param x2 - x coordiante of second coordinate
 * @param y2 - y coordinate of second coordinate
* */
function findMidPoint(x1, y1, x2, y2){
    return {"xm": ((x1+x2)/2), "ym":((y1+y2)/2)};
}