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Index › Programming Questions & Help › Programs › Lines disappear with controlp5 event...
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Lines disappear with controlp5 event... (Read 688 times)
gnarly
Lines disappear with controlp5 event...
May 2nd, 2010, 2:27pm  
To see the line, I have specify noLoop() in draw(), but adding redraw() to functions doesn't help either.

As soon as a cause an event in my program, the line vanishes.

I'm not sure if something is being drawn over it or what's going on.


Code:
void draw() {
  background(128);

   for (int i = 0 ; i < 9; i++) {
    nodes[i].draw();
   // println(nodes[i].count);
  }

strokeWeight(4);
smooth();
line((width/5 + .1 * .78*width), height - 40, (width/5 + .8 * .78*width), height*.4);  

noLoop();  
}


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blindfish
Re: Lines disappear with controlp5 event...
Reply #1 - May 2nd, 2010, 3:53pm  
If you search the forum for noLoop() you'll find lots of questions like this...  There aren't that many situations in which you'd want to use it and it's likely that the solution is to find an alternative approach to achieving what you want.  Often it's simply a matter of using a boolean to control when something does or does not appear...  So if I've understood correctly your intention you'd simply set a boolean to true when you want the line to appear and wrap the line() in a test against the boolean...
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Where is the what if the what is in why?
 
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