function configureTool()
{
	theTool = fl.tools.activeTool;
	theTool.setToolName("Spiral Tool 2");
	theTool.setIcon("spiral2.png");
	theTool.setMenuString("Spiral Tool 2");
	theTool.setToolTip("Spiral Tool 2");
	theTool.setOptionsFile( "spiral2.xml" );
};
//---------------------
function activate()
{
	theTool= fl.tools.activeTool;
	accel = theTool.accel;
	lgt = theTool.lgt;
	radius=theTool.radius;
	manualAccel = theTool.manualAccel;
	manualLgt = theTool.manualLgt;
	manualRadius=theTool.manualRadius;
	rotat = theTool.rotat;
}
function notifySettingsChanged()
{
	theTool= fl.tools.activeTool;
	accel = theTool.accel;
	lgt = theTool.lgt;
	radius=theTool.radius;
	manualAccel = theTool.manualAccel;
	manualLgt = theTool.manualLgt;
	manualRadius=theTool.manualRadius;
	rotat = theTool.rotat;
}
//---------------------
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;
}
//fix dots coords in a circle--------
function xcoord(r, theta, cx) {
	return r*Math.cos(theta)+cx;
}
function ycoord(r, theta, cy) {
	return r*Math.sin(theta)+cy;
}
//----------------------------
function mouseDown()
{
	fl.drawingLayer.beginDraw();
	penDown = fl.tools.penDownLoc;
	transformPoint(penDown, fl.getDocumentDOM().viewMatrix);
	penDown = fl.tools.snapPoint(penDown);
	Sw=fl.getDocumentDOM().width;
	Sh=fl.getDocumentDOM().height;
}
//--------------------------
function mouseMove()
{	
	if(fl.tools.mouseIsDown){
		danger=0;		
		pen = fl.tools.penLoc;
		transformPoint(pen, fl.getDocumentDOM().viewMatrix);
		pen = fl.tools.snapPoint(pen);
		w = pen.x - penDown.x;
		h = pen.y - penDown.y;
		ang = Math.atan2(h, w);
		if(manualAccel){
		accel = 1+Math.abs(ang)/Math.PI;
		}
		dist = Math.sqrt(w*w+h*h);
		if(manualLgt){
		lgt = dist/accel;
		}
		//----------------
		angle=rotat*Math.PI/180;
		dx = penDown.x;
		dy = penDown.y;
		if(manualRadius){
		keyDown();
		}
		r1 = radius;
		//---------------
		fl.drawingLayer.beginFrame();
		
		the_drawL = fl.drawingLayer;
		the_path=the_drawL.newPath();
		//------------------------
		for (k=1; k<lgt; k++) {
			r = r1;
			r1 *= accel;
			dr = r-r1;
			angle += Math.PI/2;
			dx += dr*Math.cos(angle);
			dy += dr*Math.sin(angle);
			angle2 = Math.PI/8;
			r2 = 2*r1-r1*Math.cos(angle2);
			//-------------------------
			for (j=1; j<=4; j += 2) {
				x1=xcoord(r1,angle+(j-1)*angle2,dx);
				y1=ycoord(r1, angle+(j-1)*angle2,dy);
				xc=xcoord(r2,angle+j*angle2,dx);
				yc=ycoord(r2, angle+j*angle2,dy);
				x2=xcoord(r1, angle+(j+1)*angle2,dx);
				y2=ycoord(r1, angle+(j+1)*angle2,dy);
				if((xc<Sw+200 && xc>-200) && (yc<Sh+200 < yc>-200)){
					the_path.addCurve(x1,y1,xc,yc,x2,y2);
				}else{
					danger=1;
					break;
				}
			}			
			if(danger){
				break;
			}			
		}
		the_drawL.drawPath(the_path);
		
		fl.drawingLayer.endFrame();		
	}
}
//--------------------------------
function mouseUp()
{
	fl.drawingLayer.endDraw();
	the_path.makeShape();
}
//--------------------------------
function keyDown()
{
 switch(fl.tools.getKeyDown()){
  case(38):
   radius= Math.min(radius+0.1,20);
   break;
  case(40):
   radius= Math.max(radius-0.1,0.1);
   break;
 }
}