function configureTool(){
	var the_toolObj = fl.tools.activeTool;
	the_toolObj.setIcon("sinewave.png");
	the_toolObj.setMenuString("Sine Wave Tool");
	the_toolObj.setToolName("Sine Wave Tool");
	the_toolObj.setToolTip("Sine Wave Tool");
	the_toolObj.setOptionsFile("sinewave.xml");
}
function activate(){
	the_toolObj = fl.tools.activeTool;
	res = the_toolObj.res;
	waves = the_toolObj.waves;
}
function notifySettingsChanged(){
	the_toolObj = fl.tools.activeTool;
	res = the_toolObj.res;
	waves = the_toolObj.waves;
}
function mouseDown(){
	fl.drawingLayer.beginDraw();
	penDown = fl.tools.penDownLoc;
	transformPoint(penDown, fl.getDocumentDOM().viewMatrix);
	penDown = fl.tools.snapPoint(penDown);
}
function mouseMove(){
	if(fl.tools.mouseIsDown){
		pen = fl.tools.penLoc;
		transformPoint(pen, fl.getDocumentDOM().viewMatrix);
		pen = fl.tools.snapPoint(pen);
		w = pen.x - penDown.x;
		h = pen.y - penDown.y;
		fl.drawingLayer.beginFrame();
		fl.drawingLayer.moveTo(penDown.x, penDown.y);
		segment = w/res;
		segAngle = Math.PI*2*waves/res;
		for(var i=1; i<=res; i++){
			fl.drawingLayer.lineTo(penDown.x + segment*i, penDown.y + Math.sin(segAngle*i)*h);
		}
		fl.drawingLayer.endFrame();
	}
}
function mouseUp(){
	fl.drawingLayer.endDraw();
	the_doc = fl.getDocumentDOM();
	for(var i=0; i<res; i++){
		var pointA = {x:penDown.x + segment*i, y:penDown.y + Math.sin(segAngle*i)*h};
		var j=i+1;
		var pointB = {x:penDown.x + segment*j, y:penDown.y + Math.sin(segAngle*j)*h};
		the_doc.addNewLine(pointA, pointB);
	}
}
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;
}