class point {
	//WORLD SPACE coordinates
	public var x, y, z:Number;
	//IMAGE SPACE coordinates
	public var xp, yp, zp:Number;
	//CAMERA SPACE coordinates
	public var xc, yc, zc;
	//
	//projection factor
	public var f;
	public var xOffset:Number = 400, yOffset:Number = 400;
	public var m, v:Number;
	public var q1, q2, q3:quaternion;
	//parent movieClip
	public var clip:MovieClip;
	
	function point(a, b, c) {
		x = a ? a : 0;
		y = b ? b : 0;
		z = c ? c : 0;
		zp = z; zc = z;
		xp = x; xc = x;
		yp = y; yc = y;
		//clip = _root.scene1.generateMC();
	}
	//get set pentru coordonate.
	public function get _x():Number {
		return x;
	}
	public function get _y():Number {
		return y;
	}
	public function get _z():Number {
		return z;
	}
	public function get _xp():Number {
		return xp;
	}
	public function get _yp():Number {
		return yp;
	}
	public function get _zp():Number {
		return zp;
	}
	public function set _x(a:Number) {
		x = a;
		pPoint();
	}
	public function set _y(b:Number) {
		y = b;
		pPoint();
	}
	public function set _z(c:Number) {
		z = c;
		pPoint();
	}
	public function zM(a:Number) {
		z += a;
		pPoint();
	}
	public function rotate(q:quaternion) {
		q1 = q.copy();
		q1.invert();
		q2 = new quaternion();
		q2.fromPoint(x, y, z);
		q3 = q.copy();
		q2.concat(q1);
		q3.concat(q2);
		x = q3._x;
		y = q3._y;
		z = q3._z;
		
	}
	//transformarea in CAMERA SPACE
	public function worldToCamera(cam:camera) 
	{
		var t:point;
		t = new point();
		t.x = 0 - cam.c.x; t.y = 0 - cam.c.y; t.z = 0 - cam.c.z;
		var a41 = cam.u.x * t.x + cam.u.y * t.y + cam.u.z * t.z;
		var a42 = cam.v.x * t.x + cam.v.y * t.y + cam.v.z * t.z;
		var a43 = cam.w.x * t.x + cam.w.y * t.y + cam.w.z * t.z;
		xc = x*cam.u.x + y*cam.u.y + z*cam.u.z + a41;
		yc = x*cam.v.x + y*cam.v.y + z*cam.v.z + a42;
		zc = x*cam.w.x + y*cam.w.y + z*cam.w.z + a43;
	}
	//transformarea in IMAGE SPACE (2D-ul ecranului)
	public function pPoint() {
		//a = PROJECTION FACTOR (f)
		var a = _root.scene1.f;
		xp = ( a * xc / (zc - a))*3+ xOffset;
		yp = (a * yc / (zc - a))*3 + yOffset;
		zp = zp;
	}
	
} //sfarsit.