ArrayList<TailAngle> tails = new ArrayList<TailAngle>();
ArrayList<TailAngle> mane = new ArrayList<TailAngle>();

void setup(){
  frameRate(30);
  smooth();
  size(500,500);  
  for(int i = 1; i < 3;i++){
     tails.add(new TailAngle(i*.01,true)); 
  }
  for(int i = 0; i < 4;i++){
     mane.add(new TailAngle(random(0.01,.05),false)); 
  }
 // frameRate(3);
}


color BROWN = color(128,64,0);
color DARKBROWN = color(64,32,0);
color SKYBLUE = color(128,128,255);
color RED = color(220,0,0);
color YELLOW = color(200,200,0);
float MID = 250;

float a = 0;
float as;
float wa; //wanted angle
void draw(){
 background(color(120,255,120));

  pushMatrix();
  translate(-20+MID+sin(a)*40,30+MID-abs(sin(a)*40));
  rotate(a);
  
  fill(BROWN);
  strokeWeight(2);
  stroke(0);
  
  rect(-80,-80,40,160);
  rect(40,-80,40,170);
  
  //head and neck
  pushMatrix();
    translate(80,-120);
    rotate(-PI/4);
    
    //neck
    rect(-10,-10,60,60);
    //head
    quad(40,-10,120,-10,80,110,40,110);
   // rect(20,-5,40,60);
   //ear
    triangle(60,-10,100,-10,90,-40);
    fill(0);
    ellipse(70,20,20,20);
    ellipse(70,90,10,10);
    
    
  popMatrix();

  fill(BROWN);
  
    //body
 rect(-120,-120,240,120);
//saddle
fill(DARKBROWN);
  arc(0,-120,160,160,0,PI);



  pushMatrix();
  //tail
  fill(YELLOW);
  translate(-130,-120);
//  println(-a/PI);
  for(TailAngle ta : tails){
    pushMatrix();
    ta.move();
    rotate(ta.ta);
    rect(0,0,10,120);
    popMatrix();  
}
  popMatrix();
  
  
  fill(RED);
  arc(0,80,400,160,0,PI);

  line(-200,80,200,80);

fill(YELLOW);

  pushMatrix();
    translate(80,-120);
    rotate(-PI/4);    
    //mane
    float over = 0.0;
    for(TailAngle m : mane){
      m.move();
      pushMatrix();
       translate(over,-10);
       rotate(m.ta);
       rect(0,0,6,40);
      popMatrix();
      
      over += 20;
    }
  popMatrix();




  
  popMatrix();

  if(! mousePressed){
     as-= a/20;
     a += as;
     as *= .97;
  } else {
    if(a < wa) { a+= .05; }
    if(a > wa) { a-= .05; }
    
  }
 
}




void mousePressed(){
  wa = constrain(map(mouseX,0,width,-PI/3,PI/3),-PI/3,PI/3); 
  //println(a/PI+" "+sin(a)+" "+cos(a));
  as = 0;
}
void mouseDragged(){
  wa = constrain(map(mouseX,0,width,-PI/3,PI/3),-PI/3,PI/3); 
  
}

class TailAngle{
 float ta = 0;
 float twa = 0;
 float tag;
 float tas;
 boolean stop;
 TailAngle(float ps, boolean pstop){
  tag = ps;
  stop = pstop;
 } 
 void move(){
   twa = -a;
   if(! stop){
      twa += PI/4; 
      tas *= .9;
   }
   if(ta < twa){
      tas += tag; 
   }
   if(ta > twa){
     tas -= tag; 
   }
   ta += tas;
   if(stop){
     if(ta < 0){
       ta = 0;
       tas *= -.2;
     }
   }
   if(stop && ta < 0.01 && tas < 0.01){
    ta = 0.0;
   tas = 0.0; 
   }
   if(!stop && tas < .01 && abs(ta - twa) < 0.01){
      ta = twa; 
      tas = 0.0;
   }
   
 }
  
}