// create a short variable name to represent the mouse position
var mouse = smartShape.currentMousePos;

// create a short variable name to represent the control points array
var cps = smartShape.elem.controlPoints;

// create a new generic object to contain event handler functions
operation = new Object();

// event handlers:
// define an InsertSmartShapeAt event handler that will create the
// shape for the InsertSmartShapeAt event
operation.InsertSmartShapeAt = function(){
	
	// create new path as first element in elements array
	smartShape.elem.elements[0] = new Path();
	
	// create new contour as first contour in contours array
	smartShape.elem.elements[0].contours[0] = new Contour();
	
	// set the contour to be a closed contour
	smartShape.elem.elements[0].contours[0].isClosed = true;
	
	// assign a short variable to represent the nodes array
	var nods = smartShape.elem.elements[0].contours[0].nodes;
	
	// create 3 nodes in the contour by altering the nodes array (nods) length
	nods.length = 3;
	
	// set the position of the 3 nodes in the first contour in a triangle shape
	// each point is based around the location of the mouse
	SetNodePosition(nods[0], AddPoints(mouse, {x:-25, y:-25}));
	SetNodePosition(nods[1], AddPoints(mouse, {x:25, y:0}));
	SetNodePosition(nods[2], AddPoints(mouse, {x:-25, y:25}));
	
	// create a new control point in the first position of the control points array
	cps[0] = new ControlPoint();
	
	// set the first control point to the position of the second node in nods
	// with the name "Tip" and the toolTip "Move Tip"	
	SetControlPoint(cps[0], nods[1], "Tip", "Move Tip");
}

// define an BeginDragControlPoint event handler that will initiate
// register move calls to handle control point and node positioning
// when the control point is moved.
operation.BeginDragControlPoint = function(){

	// define a variable to hold a default RegisterMoveParms object
	var parms = smartShape.GetDefaultMoveParms();

	// assign a short variable to represent the nodes array
	var nods = smartShape.elem.elements[0].contours[0].nodes;
	
	// set the second path node and the control point to move with a
	// RegisterMove type of movement with default properties specified in parms
	cps[0].RegisterMove(parms);
	nods[1].RegisterMove(parms);
}
// end event handlers

// custom functions:
/**
 * SetBezierNodePosition sets the position of the passed node to the
 * position of the point pt parameter. All node control points are
 * set to this point as well
 * Requires: SetBezierNodePosition
*/
SetNodePosition = function(node, pt){
	SetBezierNodePosition(node, pt,pt,pt); // set point position for all nodes to pt
}

/**
 * SetBezierNodePosition sets the position of the passed node to the
 * position of the points ptp (node predecessor), pt (main point), and
 * pts (node successor)
*/
SetBezierNodePosition = function(node, ptp, pt, pts){
	node.predX	= ptp.x;	node.predY	= ptp.y; // Predecessor point
	node.x		= pt.x;		node.y		= pt.y; // Main points
	node.succX	= pts.x;	node.succY	= pts.y; // Successor points
}

/**
 * SetControlPoint positions the passed control point cp to the location
 * specified by pt and assigns to it name and toolTip 
*/
SetControlPoint = function(cp, pt, name, toolTip){
	cp.x = pt.x; // set x position from x of pt
	cp.y = pt.y; // set y position from y of pt
	cp.name = name; // set control point name to name passed
	cp.toolTip = toolTip; // set control point toolTip to toolTip passed
}

/**
 * AddPoints adds two points pt1 and pt2 and returns the resulting point
*/
AddPoints = function(pt1, pt2){
	return {x:pt1.x + pt2.x, y:pt1.y + pt2.y}; // add x and y properties in returned object
}
// end custom functions

// invoke event handler:
// if the event specified by smartShape.operation exists
// in the operation object, call that event as a function
if (operation[smartShape.operation]) operation[smartShape.operation]();