CODEWITHSUNDEEP
flashactionscript-3performancedrawingrendering
Marty
Marty

Reputation: 39466

What's the most efficient way to maintain a lineTo between two points in AS3?

I'm looking to work out the most efficient way to maintain the joining of two points with a line in AS3. Basically, I have a whole bunch of circles that move around, and have a property subNode which will act as an end point for the line.

At the moment, the way I'm doing it is extremely intensive:

if(_line != null) _line.parent.removeChild(_line);

_line = new Sprite();
_line.graphics.lineStyle(1, 0xE1164B);
_line.graphics.lineTo(subNode.x - x, subNode.y - y);

addChild(_line);

Is there maybe just a redrawLine() or something that I'm missing?

Upvotes: 0

Views: 475

Answers (1)

DanielB
DanielB

Reputation: 20230

You don't have to instantiate a Sprite every time. Also a Shape should be enough in this case.

if(_line == null) {
   _line = addChild(new Shape()) as Shape;
}

_line.graphics.clear();
_line.graphics.lineStyle(1, 0xE1164B);
_line.graphics.lineTo(subNode.x - x, subNode.y - y);

Also you should think about when to draw the line. Maybe only if the subNode hase moved. But there is not enough code for a proper answer to that.

Upvotes: 2

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