import Space3D.*;
#include "customFunctions.as"
//to hold clips
this.createEmptyMovieClip("space", 1);
//center origin
space._x = Stage.width / 2;
space._y = Stage.height / 2;
//hold x,y,z values of the 8 points to make a cube
pointsArray = new Array();
pointsArray.push(new Point3D(-100, -100, -100));
pointsArray.push(new Point3D(-100, -100, 100));
pointsArray.push(new Point3D(-100, 100, -100));
pointsArray.push(new Point3D(-100, 100, 100));
pointsArray.push(new Point3D(100, -100, -100));
pointsArray.push(new Point3D(100, -100, 100));
pointsArray.push(new Point3D(100, 100, -100));
pointsArray.push(new Point3D(100, 100, 100));
//attach 8 clips to space's 0,0 (center of screen)
for (i = 0; i < 8; i++) {
	attachedObj = space.attachMovie("ball", "ball" + i, i);
}
//move camera towards you (comment out the next line if you want to be inside the cube
Camera3D.z = -200;
rotateCube = function () {
	//rotation of cube determined by _xmouse and _ymouse
	var xrot = this._ymouse / 900;
	var yrot = -this._xmouse / 900;
	//rotate all the points
	Universe3D.rotatePointArray(pointsArray, xrot, yrot, 0);
	//convert the 3D points to 2D points
	screenPoints = Universe3D.toUniverse2D();
	for (var i = 0; i < screenPoints.length; i++) {
		var cur_ball = this["ball" + i];
		//attach a ball to each point
		screenPoints[i].moveClipHere(cur_ball);
	}
};
space.onEnterFrame = rotateCube;

Object.prototype.toString = function() {
	//set empty string to be displayed
	var string = "";
	//cycle through properties and functions
	for (var i in this) {
		//if not a function
		if (typeof (this[i]) != "function") {
			//add the property name and value to the string
			string += i+":"+this[i].toString()+", ";
		} else {
			//else add the function name and "Function"
			string += i+":Function, ";
		}
	}
	//don't include last comma and space in final string
	string = string.substring(0, string.length-2);
	return string;
};
MovieClip.prototype.lineHitTest = function(x1, y1, x2, y2, pre) {
	//find difference in x
	var x = x2-x1;
	//find difference in y
	var y = y2-y1;
	//find distance between points
	var dis = Math.sqrt(x*x+y*y);
	//when pre(precision) equals 2, it checks every 2 points
	//therefore, the number of point equals dis/pre
	var num = dis/pre;
	var xinc = x/num;
	var yinc = y/num;
	//vars to hold current point
	var tx, ty;
	if (num) {
		for (var i = 0; i<=num; i++) {
			//if pre equals 2 and distance is ten, then 
			//we find a point 1/5 of the way down the line.
			tx = x1+i*xinc;
			ty = y1+i*yinc;
			//if the point(tx, ty) touches the movieclip we're testing
			if (this.hitTest(tx, ty, true)) {
				//return true because the movieclip is on the line
				return {x:tx, y:ty};
			}
		}
	}
	//return false because none of the tested points hit the movieclip   
	return false;
};
Object.prototype.clone = function() {
	//empty object
	var temp = new Object();
	//for each propety in the going-to-be-cloned object
	for (i in this) {
		//copy property name with value to new object
		temp[i] = this[i];
	}
	return temp;
};
Array.prototype.clone = function() {
	//empty array
	var temp = new Array();
	//for each value in the going-to-be-cloned array
	for (i in this) {
		//copy value with index to new object
		temp[i] = this[i];
	}
	return temp;
};
Array.prototype.sum = function() {
	//empty num
	var total = 0;
	//for each value in the array
	for (i=0; i<this.length; i++) {
		total += this[i];
	}
	return total;
};
Array.prototype.fill = function(fill) {
	//for each value in the array
	for (i=0; i<this.length; i++) {
		this[i] = fill;
	}
};
Array.prototype.contains = function(elem) {
	for (var i = 0; i<this.length; i++) {
		if (this[i] == elem) {
			return true;
		}
	}
	return false;
};
angleFromTo = function (x1, y1, x2, y2) {
	//find change in x
	var x = x2-x1;
	//find change in y
	var y = y2-y1;
	//Math.atan2 returns angle in radians; Math.PI/180 converts to degrees
	return Math.atan2(y, x)/(Math.PI/180);
};
distanceFromTo = function (x1, y1, x2, y2) {
	//find change in x
	var x = x2-x1;
	//find change in y
	var y = y2-y1;
	//use pythagorean theorem to find distance
	return Math.sqrt(x*x+y*y);
};
vectorToHorz = function (ang, dis) {
	var rads = ang/(180/Math.PI);
	//returns x-component of a vector of dis magnitude at ang angle
	return dis*Math.cos(rads);
};
vectorToVert = function (ang, dis) {
	var rads = ang/(180/Math.PI);
	//returns y-component of a vector of dis magnitude at ang angle
	return dis*Math.sin(rads);
};
crop = function (num, bot, top) {
	if (num<bot) {
		return bot;
	}
	if (num>top) {
		return top;
	}
	return num;
};