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Index › Programming Questions & Help › Syntax Questions › Mouse Click in certain areas of screen only
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Mouse Click in certain areas of screen only? (Read 2322 times)
Evian_water
Mouse Click in certain areas of screen only?
Apr 2nd, 2009, 1:35am  
Hey guys

I am looking to only run somthing when the mouse is clicked within a certain shape on the screen. If the mouse is outside the shape i dont want anything to happen.

How do i specify this in processing, or what methods would be used? I am unsure of how i can tell the program to only react in certain areas.

Thanks
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JohnG
Re: Mouse Click in certain areas of screen only?
Reply #1 - Apr 2nd, 2009, 1:58am  
Well you can find the mouse position with mouseX and mouseY, so you can check in your code where the mouse is when it's been clicked, and then either take action or not depending, e.g.

Code:
void mousePressed()
{
  if(mouseX >40 && mouseX<80 && mouseY>40 && mouseY<100)
  {
    //do something.
  }
}
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PhiLho 
Re: Mouse Click in certain areas of screen only?
Reply #2 - Apr 2nd, 2009, 2:02am  
This recent thread: Area detection HELP is related: if you can find out that a point (the mouse click one) is within a shape, then you can do your action, otherwise you just ignore it.
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Evian_water
Re: Mouse Click in certain areas of screen only?
Reply #3 - Apr 2nd, 2009, 4:21am  
Quote:
Well you can find the mouse position with mouseX and mouseY, so you can check in your code where the mouse is when it's been clicked, and then either take action or not depending, e.g.

Code:
void mousePressed()
{
  if(mouseX >40 && mouseX<80 && mouseY>40 && mouseY<100)
  {
    //do something.
  }
}



Ah yes, so for a square i can just specify the 4 sides co ords in the if test and do a test that way. I was thinking about the mouseX and mouseY but did not have a clear example of how it operated.

Also thank you for the area thread, that was also useful as it gave me an example of a program using just mousex and mousey. Cheers guys.
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Lasrin
Re: Mouse Click in certain areas of screen only?
Reply #4 - Apr 2nd, 2009, 11:44am  
for a circle, where : ellipse(x,y, h,w);

mouseReleased() {
  if (dist(mouseX,mouseY, x,y) < h/2) {
     //  do something
  }
}
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Lasrin Xefativ, Exiled Lord of Chaos
Devote' to the Platypus Messiah first order of the Skittle
Lasrin  
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