//sketch_Button
 
import controlP5.*;
ControlP5 cp5;
int myColor = color(255);
int c1,c2;
float n;
void setup() {
  size(400,400,P3D);
  noStroke();
  cp5 = new ControlP5(this);
  
  cp5.addButton("colorA")
     .setValue(0)
     .setPosition(0,0)
     .setSize(60,19);
  
  cp5.addButton("colorB")
     .setValue(100)
     .setPosition(0,20)
     .setSize(60,19);
     
  cp5.addButton("colorC")
     .setPosition(0,40)
     .setSize(60,19)
     .setValue(50);
}

void draw() 
{
  pushMatrix();
  lights();

  background(255);
  myColor = lerpColor(c1,c2,n);
  n += (1-n)* 0.01; 
  fill(myColor);
  translate(width / 2, height / 2);
  rotateY(map(mouseX, 0, width, -PI/1, PI/1));
  rotateX(map(mouseY, 0, height, PI/1, -PI/1));

  box(50,50,100);
  popMatrix();
}


public void colorA(int theValue) {
  println("a button event from colorA: "+theValue);
  c1 = c2;n = 0;
  c2 = color(0,160,100);
}

public void colorB(int theValue) {
  println("a button event from colorB: "+theValue);
  c1 = c2;n = 0;
  c2 = color(150,0,0);
}

public void colorC(int theValue) {
  println("a button event from colorC: "+theValue);
  c1 = c2;n = 0;
  c2 = color(255,255,0);
}