Re: [Flapjax: 750] Digest for flapjax@googlegroups.com - 2 Messages in 1 Topic

[Nikita Dudnik]

Hello.

I was trying to code something similar when I was learning flapjax.

Here is the result:

https://gist.github.com/3224296

By the way you are storing a state related value in the "started" variable. It breaks the idea of representation of internal states using behaviors and will give you a lot of bug fixing headache when your project grows. In my example I have encapsulated mouse down, mouse up inside mouseIsDownB.

-- 

Nikita Dudnik

On Wednesday, August 1, 2012 at 12:35 , fla...@googlegroups.com wrote:

  Today's Topic Summary

Group: http://groups.google.com/group/flapjax/topics

• Forcing an event stream to finish [2 Updates]

 Forcing an event stream to finish

Bennit <ben....@gmail.com> Jul 31 06:36AM -0700  

In the example below I draw a line on a canvas element, however, after the
line is drawn, the event stream for mousemove still fires events. Is there
a way to force event streams to stop receiving events?
 
Kind regards
Ben
----
// mode -- Line
function modeLine(startX,startY) {

function drawLine(x1,y1,x2,y2) {
context.beginPath();
context.moveTo(x1,y1);
context.lineTo(x2,y2);
context.stroke();
context.closePath();
}

var lineE = receiverE(); // once a line event will be fired
var started = true; // the drawing of this line operation has
started
var pointA = new Point(startX,startY); // the starting point
var pointB = pointA; // the current ending point

jQCanvas.fj('extEvtE','mousemove').mapE(function(mm){
if(started) {
redraw();
drawLine(startX,startY,mm.layerX,mm.layerY);
}
else { console.log('mouse move event after stop');}
});

jQCanvas.fj('extEvtE','mouseup').onceE().mapE(function(mu){
started = false;
lineE.sendEvent(new Line(mu.layerX,mu.layerY));
});

return lineE;
}


 

Jay Shepherd <zys...@gmail.com> Aug 01 10:08AM +1200  

Hi Ben. Checkout filterE, ill give you a better example when im on a pc
:-)


 

You received this message because you are subscribed to the Google Group flapjax.
You can post via email.
To unsubscribe from this group, send an empty message.
For more options, visit this group.

--
Flapjax home page: www.flapjax-lang.org
Flapjax list: groups.google.com/group/flapjax
Post: fla...@googlegroups.com
Unsubscribe: flapjax-u...@googlegroups.com