hello everybody,
i'm newbie in processing and need some help with my project.
i want to controll the directions of a litte triangle with a joystick by proControll lib.
the triangle should have some trig but right now its just twiggling round in the upper left corner and not following the joystick and i don't know what i made wrong.

I would be pleased about some help.


------ Code ------

import procontroll.*;
import java.io.*;

ControllIO controll;
ControllDevice device;
ControllStick stick;
ControllButton button;

// triangle
float predCntrX, predCntrY;
float predX[] = new float[3];
float predY[] = new float[3];
float predLen = 8.0;
float predAng, predRot;
float easing = .05;

void setup(){
 size(400,400);
 predCntrX = width/2;
 predCntrY = height/2;
 smooth();
 
 //get controller instance
 controll = ControllIO.getInstance(this);

 //list controller
 controll.printDevices();

 //controller id 2
 device = controll.getDevice(2);
 println("STICKS:");
 device.printSticks();
 println("SLIDERS:");
 device.printSliders();
 
 
 device.setTolerance(0.05f);
 
 ControllSlider sliderX = device.getSlider(0);
 ControllSlider sliderY = device.getSlider(1);
 
 stick = new ControllStick(sliderX,sliderY);

 
 //repaint background
  fill(255, 40);
  rect(0, 0, width, height);
}

float totalX = (width/2);
float totalY = (height/2);

void draw(){
 background(255);
 
 //get x/y distance between stick and triangle
 float deltaX = (stick.getX()-predCntrX);
 float deltaY = (stick.getY()-predCntrY);
 
 //decelerate
 deltaX *= easing;
 deltaY *= easing;
 
 predCntrX += deltaX;
 predCntrY += deltaY;
 
 // orient triangle
 predRot = atan2(deltaY, deltaX);
 
 totalX = constrain(deltaX + stick.getX(),10,width-10);
 totalY = constrain(deltaY + stick.getY(),10,height-10);
 

  // draw triangle
 createPredatoryTriangle();
 
 //println("X: "+stick.getX());
 
}
void createPredatoryTriangle(){
 // draw triangle with some trig
 fill(0);
 beginShape();
 for (int i=0; i<3; i++){
   predX[i] = predCntrX+cos(radians(predAng)+predRot)*predLen;
   predY[i] = predCntrY+sin(radians(predAng)+predRot)*predLen;
   vertex(predX[i], predY[i]);
   predAng += 120;
 }
 endShape(CLOSE);
}