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Index › Programming Questions & Help › Other Libraries › setValue ControlP5

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setValue ControlP5 (Read 756 times)

Ynk

setValue ControlP5
Nov 24^th, 2009, 8:26am

Hi,

I would to use librairy controlP5 to change the position of an ellipse, but as easy as it may be, I don't reach to... I don't reach to give the value to the parameters of this ellipse...

Someone can check if my syntax is correct please?

Code:


import controlP5.*;
ControlP5 controlP5;

float posX = 50;

void setup(){
  size(250,150);
  noStroke();
  smooth();

  controlP5 = new ControlP5(this);
  String[] parametres = new String[1];

  controlP5.addSlider("position",50,150,50,30,100,150,10);
}



void draw(){
  background(180);
  fill(255,0,0);
  ellipse(posX,50,10,10);
}

void slider(float posX) {
  controlP5.controller("position").setValue(posX);
}

blindfish

Re: setValue ControlP5
Reply #1 - Nov 24^th, 2009, 9:02am

In the following line:

Code:

controlP5.addSlider("position",50,150,50,30,100,150,10);

"position" is the name of the function called from the slider; so you need to write a corresponding function (i.e. not slider()) that takes one argument: the value returned by the slider. In this function you can assign the value of the slider to your global variable:

Code:

void position(float p) {
  posX = p;
}

... at least that's how I did it the last time I worked with p5; and it works with your code Wink

Where is the what if the what is in why?

Ynk YaBB Newbies Offline Posts: 14	Re: setValue ControlP5 Reply #2 - Nov 24^th, 2009, 9:04am perfect ! thank you very much

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