// draws random lines between points at a set distance along a path to make a spider web
// I used the wonderfully documented wallblazer2.0 script from 
// the mighty graf salamander as a starting point.
// I was trying to recreate the nodebox script "spider".
// this version is much simpler in the way it passes all selected objects to the startWeb function

pointDist = 10; // distance between points
useCurve = false; //use a curve instead of a straight line
randomize = false; // randomize the distance between points on original path
killbase = false; // if used on objects, keep the object/base (false --> kill the base)
strokeRand = false; //used to check if the stroke should be randomized
minStroke = .5; // minstroke and maxstroke define the range for the randomized stroke
maxStroke = 3;
var clr = new CMYKColor(0,0,0,1); // set stroke color to black, if the selected objects already have a strok color, that will be used. 

values = Dialog.prompt("set Spider Web values", [
	{ value: pointDist, description: "point distance", width: 50 },
	{ value: useCurve, description: "use curves", width: 50 },
	//{ value: randomize, description: "randomize distance", width: 50 },
	{ value: killbase, description: "remove original path", width: 50 },
	{ value: strokeRand, description: "use random stroke widths", width: 50 },
	{ value: minStroke, description: "minimum stroke width", width: 50 },
	{ value: maxStroke, description: "maximum stroke width", width: 50 }
]);

if (values != null ) {
	pointDist = values[0];
	useCurve = values[1];
	killbase = values[2];
	strokeRand = values[3];
	minStroke = values[4];
	maxStroke = values[5];
	//randomize = values[6];

	var sel = activeDocument.getMatchingItems(Path, { selected: true }); 
	for (var i = 0; i < sel.length; i++) {
			art = sel[i];
			startWeb(art);
	}
}

function startWeb(webObj){

	base = webObj.clone(); // create a clone of the webObj in case you would keep the base object

	if (webObj.style.stroke.color != null) clr = base.style.stroke.color; //if webObj has a stroke colour, use it. doesn't work with spot colors.

	if (randomize == true){
		var length = webObj.getLength();
		//for (var i = 0; i < length){
			// I want to add code here to add new anchor points at random intervals around the path.
			// not sure how to do it. Anyone's suggestions would be welcome :)
			
		//}
	} else{
		webObj.curvesToPoints(pointDist, 10000); // creates anchorpoints on the webObj, the distance between the points is set in the options dialog
	}
	var group = new Group();  // a new empty group
	
	var count = webObj.curves.length-1; // get the count of anchorpoints
	//print (count);
	for (var j = 0; j < count; j++)
	{
		//print ("in j loop");
		var path = new Path(); // create a new path element
		path.moveTo(webObj.curves[j].getPoint1()); // set the start point of the path (the anchotpoint on the webObj)
		//path.moveTo(webObj.getPoint(j));
		path.style.stroke.color = clr;
		if (strokeRand == true){
			path.style.stroke.width = minStroke + Math.random() * (maxStroke - minStroke); // sets a random stroke
		}
		var rpoint = webObj.curves[Math.round(Math.random()*count)].getPoint1(); //choose a point randomly on the webObj path
		if (useCurve == true){
			var cpoint1 = webObj.curves[Math.round(Math.random()*count)].getPoint1();
			var cpoint2 = webObj.curves[Math.round(Math.random()*count)].getPoint1();
			path.curveTo(cpoint1, cpoint2, rpoint);
		} else {
			path.lineTo(rpoint);
			//path.lineTo(webObj.curves[rpoint].getPoint1()); //draw a line from the current point to a random point
		}
		group.appendChild(path); // add the path to a group
		
	}
	//print ("out of j loop");
	webObj.remove();
	if (killbase == true){
		base.remove();
	} else {
		var maingroup = new Group();
		maingroup.appendChild(base);
		maingroup.appendChild(group);
	}
	
	//print ("done with startWeb");
	return webObj;
	
}