// PolyLine Tool for Macromedia Flash MX2004
//
// (C) 2003 bswan
//

function configureTool(){
	var thisTool = fl.tools.activeTool;
	thisTool.setIcon("PolyLine.png");
	thisTool.setMenuString("PolyLine Tool");
	thisTool.setToolName("PolyLine Tool");
	thisTool.setToolTip("PolyLine Tool");
	thisTool.setOptionsFile("PolyLine.xml");
}

function activate(){
	thisTool = fl.tools.activeTool;
	thisDoc =  fl.getDocumentDOM();
	
	fillShape = thisTool.fillShape;				// connect last point with first and fill the shape
	closeShape = thisTool.closeShape;			// connect last point with first, but do not fill the shape
	points = new Array();					// here all the points dweling
	toolIsActive = false;					// since tool is working not only while mouse is down - here's it's state
}


function notifySettingsChanged(){
	fillShape = thisTool.fillShape;
	closeShape = thisTool.closeShape;
}


function mouseDown(){

	// if tool already working:
	if (toolIsActive){
		// get last fixed point:
		var lastNum = points.length-1;
		var lastPoint = points[lastNum];
		
		// check if current point equal to first and closeShape or fillShape flags is set:
		if ((closeShape || fillShape) && (currPoint.x==startPoint.x && currPoint.y==startPoint.y)){
			finishDraw();
		// else just add current point into array and draw new line:
		} else {
			points.push(currPoint);
			thisDoc.addNewLine(lastPoint, currPoint);
		}
	
	// else if it is first mouseDown - activate tool:
	} else {
		fl.drawingLayer.beginDraw();
		toolIsActive=true;
		points = new Array();							// renew array!
		startPoint = fl.tools.penDownLoc;					// store firts point
		transformPoint(startPoint, thisDoc.viewMatrix);
		startPoint = fl.tools.snapPoint(startPoint);
		points.push(startPoint);							// and add it to array
	}
}

function mouseMove(){
	// if tool is active =)
	if (toolIsActive){
		currPoint = fl.tools.penLoc;											// get current point
		transformPoint(currPoint, thisDoc.viewMatrix);
		currPoint = fl.tools.snapPoint(currPoint);
		currPoint = fl.tools.constrainPoint(points[points.length-1], currPoint);
		fl.drawingLayer.beginFrame();
		fl.drawingLayer.moveTo(points[points.length-1].x, points[points.length-1].y);	// draw temporary new line
		fl.drawingLayer.lineTo(currPoint.x, currPoint.y);
		fl.drawingLayer.endFrame();
	}
}

function keyDown(){
	// if ESC is pressed and tool is active:
	if(fl.tools.getKeyDown()==27 && toolIsActive){
		finishDraw();
	}
}

function finishDraw(){
	fl.drawingLayer.endDraw();
	toolIsActive=false;
	// if fillShape flag is set - redraw all lines as closed Path:
	if (fillShape){
		poly_path = fl.drawingLayer.newPath();
		for (var i = 0; i < points.length; i++) {
			poly_path.addPoint(points[i].x, points[i].y);
		}
		poly_path.close();
		poly_path.makeShape();
		
	// else if closeShape flag is set - just add line between last and first points:
	} else if(closeShape){
		thisDoc.addNewLine(startPoint, points[points.length-1]);
	}
}


// -----------------------------------

function transformPoint( pt,  mat )
{
	var x = pt.x * mat.a + pt.y * mat.c + mat.tx;
	var y = pt.x * mat.b + pt.y * mat.d + mat.ty;
	pt.x = x;
	pt.y = y;
}