Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Custom Class for 'Dashed Line' in AS3

Posted on 2009-07-14
5
Medium Priority
?
370 Views
Last Modified: 2013-11-11
Hi all, I am trying to create a custom class for Dashed Line.
I have the attached code in .as file and thr following code in .fla file :

import diagrammingtool.utils.DashedLine;
import flash.geom.Point;
var spt:Point = new Point(200,50);
var ept:Point = new Point(400,100);
var dl:DashedLine = new DashedLine(spt,ept,4,2);
addChild(dl);



There are no errors but the theres no dashed line appearing either. Can any one point me to the mistake I am making ? Thanks.
package diagrammingtool.utils{
       import flash.geom.Point;
	   import flash.display.Graphics;
	   import flash.display.Sprite;
	   import flash.display.Shape;
 
 
        // START CLASS
        public class DashedLine extends Sprite{            
                // CONSTRUCTOR              
               private var startPoint:Point = new Point();
			   private var endPoint:Point = new Point();
               public function DashedLine(sPoint:Point, ePoint:Point, len:Number, gap:Number) {
				   var child:Shape = new Shape();
				   var seglen:Number = len + gap ;
				   var deltax = sPoint.x-ePoint.x; 
				   var deltay = sPoint.y-ePoint.y; 
				   var dist:Number = Math.sqrt(deltax*deltax+deltay*deltay);
				   var noOfSegs:Number =  Math.floor(Math.abs(dist/seglen));
				   var angle:Number = Math.atan2(deltay,deltax);
				   var cx:Number = sPoint.x;
				   var cy:Number = sPoint.y;
				   // add these to cx, cy to get next seg start
				   deltax = Math.cos(angle)*seglen;
				   deltay = Math.sin(angle)*seglen;
				   // loop through each seg
				   for (var n:Number = 0; n < noOfSegs; n++) {
						child.graphics.moveTo(cx,cy);
						child.graphics.lineTo(cx+Math.cos(angle)*len,cy+Math.sin(angle)*len);
						cx += deltax;
						cy += deltay;
						trace(cx);
				   }
				   // handle last segment as it is likely to be partial
				   child.graphics.moveTo(cx,cy);
				   var delta:Number = Math.sqrt((ePoint.x-cx)*(ePoint.x-cx)+(ePoint.y-cy)*(ePoint.y-cy));
				   if(delta>len){
					   // segment ends in the gap, so draw a full dash
					   child.graphics.lineTo(cx+Math.cos(angle)*len,cy+Math.sin(angle)*len);
				   } else if(delta>0) {
					   // segment is shorter than dash so only draw what is needed
					   child.graphics.lineTo(cx+Math.cos(angle)*delta,cy+Math.sin(angle)*delta);
				   }
				   // move the pen to the end position
				   child.graphics.moveTo(ePoint.x,ePoint.y);
				   addChild(child);
               }
 
 
        }
        // END CLASS
}
// END PACKAGE

Open in new window

0
Comment
Question by:whatisittellme
  • 3
  • 2
5 Comments
 
LVL 18

Accepted Solution

by:
Antonio Estrada earned 2000 total points
ID: 24860308
Here's an old AS2 class I ported to AS3 also a while back. It works fine, so you might as well check it out:

http://vulturous.110mb.com/eefiles/DashedLine.as

-V
0
 
LVL 2

Author Comment

by:whatisittellme
ID: 24860625
Thank you. I tried using the one you sent with the following code on the .fla file. I might be doing something wrong, the dashed line doesnt show up :(



var dl = new DashedLine(000000,4,90,200,300,400,500,10,5);
stage.addChild(dl);

Open in new window

0
 
LVL 2

Author Comment

by:whatisittellme
ID: 24860726
oops, my mistake...it works. the had given the coordinates that were way off the stage. figured out. thanks !
0
 
LVL 18

Expert Comment

by:Antonio Estrada
ID: 24861465
Glad to help!

-V
0
 
LVL 2

Author Comment

by:whatisittellme
ID: 24879230
Hi 'Vulturous'. Could you take a look at this question: http://www.experts-exchange.com/Software/Photos_Graphics/Web_Graphics/Macromedia_Flash/ActionScript/Q_24579146.html

I have a similar problem but in this case I want to implement so that it can be overlayed on google map/microsoft live maps using UMap(it is an Advanced Flash Component available for free download). I would greatly appreciate any help. Thanks !
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Here are some practices and techniques that can be adopted into your Flash/Flex application development process. Note: Not all "performance tips" provide an immediately-recognizable benefit.   This article does not include timing validation data,…
In my long career of working as an actionscript developer, I had spent sleepless night often working hard to solve some small problems which actually took a lot of my development time; later found out the solutions to be a line or two. Here are s…
The goal of the tutorial is to teach the user how to live broadcast using Flash Media Live Encoder and connecting it to YouTube to broadcast. Log into your Youtube account, choose live stream settings, start live stream from Flash Media Live Enc…
The goal of the tutorial is to teach the user how to how to load their YouTube profile onto Flash Media Live Encoder.
Suggested Courses

824 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question