/*
moon - time to make moon, draw half curve with two circles in it


sketch_circle
tree
ground


*/
class moon  //incomplete
{
  ArrayList vert; 
  float c_wg; //degree of sine-ness to use in drawing
  int seed = round(random(0,100000));
  PVector pos;
  int frames_taken = 0;
  
  moon()
  {
    // 0,0 in moon center
    vert = new ArrayList();
  }
}
  

class sketch_circle
{
  ArrayList vert;
  float radius;
  float step = random(1,1.5);
  float c_wg; //degree of sine-ness to use in drawing
  int seed;
  PVector pos;
  int frames_taken = 0;
  sketch_circle(float xpos, float ypos, float i_rad, float i_c)
  {
    c_wg = i_c;
    seed = round(random(0,1000000));
    float start_point = random(0,TWO_PI)/step;
    vert = new ArrayList(floor(TWO_PI/step) - 1);  //rough estimate for num of elements 
    radius = i_rad;
    for (float i = -step+start_point; i < 2*PI + step*2+start_point; i += step)
    {
      vert.add(new PVector(radius*cos(i),radius*sin(i)));
    }
   
    pos = new PVector(xpos,ypos);
  }
  
  void render()
  {
    ++frames_taken;
    pushMatrix();
    translate(pos.x,pos.y);
    sketch_line(vert,seed,frames_taken*20,1,c_wg);
    
    popMatrix();
  }
      
      
  
}

class tree
{
  ArrayList trunk;
  ArrayList top;
  int frames_taken = 0;
  PVector pos;
  float tall;
  float wide = 30;
  int seed;
  tree(float xpos, float ypos, float i_tall)
  {
    tall = i_tall;
    seed = round(random(0,10000));
    pos = new PVector(xpos,ypos);
    
    trunk = new ArrayList();
    
    top = new ArrayList();  //just two circles
    top.add(new sketch_circle(0,-10,90,3));
    top.add(new sketch_circle(0,0,80,4));
    top.add(new sketch_circle(0,10,70,6));
    
    ArrayList temp = new ArrayList();
    temp.add(new PVector(0,0));
    temp.add(new PVector(-wide/5,tall/5));
    temp.add(new PVector(-wide/2,tall/2));
    temp.add(new PVector(-wide,tall));
    temp.add(new PVector(-wide,2*tall)); 
    trunk.add(temp.clone());
    temp.clear();
    
    temp.add(new PVector(0,0));
    temp.add(new PVector(wide/5,tall/5));
    temp.add(new PVector(wide/2,tall/2));
    temp.add(new PVector(wide,tall));
    temp.add(new PVector(wide,2*tall));
    trunk.add(temp.clone());
    temp.clear();
    
    //left branches
    for(int i=0; i < 3; ++i)
    {
    temp.add(new PVector(random(-wide/6,0),0));
    temp.add(new PVector(random(-wide/4,0),tall/5));
    temp.add(new PVector(random(-wide/3,-wide/4),tall/4));
    temp.add(new PVector(random(-wide,-wide/3),tall/2));
    temp.add(new PVector(random(-wide,-wide/2),tall));
    temp.add(new PVector(random(-wide,-wide/2),2*tall));
    trunk.add(temp.clone());
    temp.clear();    
    }
  
    
    
    
    
  }
  
  void render(float xpos)
  {
    //if not on screen
    if (pos.x < xpos + width/10 || pos.x > xpos + width*1.1)
    {
      frames_taken = max(0,frames_taken - 2);
    }
    else
    {
      frames_taken = min(round(3/SKETCH_STEP/5),frames_taken + 1);
    }
    if (frames_taken <= 0)
    {
      return;
    }
    
  
    pushMatrix();
    translate(pos.x,pos.y);
    sketch_circle temp1;
    for(int i = 0; i < top.size(); ++i)
    {
      temp1 = (sketch_circle)top.get(i);
      temp1.render();
    }
    
    ArrayList temp2;
    for(int i = 0; i < trunk.size(); ++i)
    {
      temp2 = (ArrayList)trunk.get(i);
      sketch_line(temp2,seed,frames_taken*5);
    }
   
    
    popMatrix();
    
  }
  
}


class ground
{
  ArrayList vert;
  int frames_taken = 1;
  PVector pos;
  float wide = 300;
  int seed;
  
  
  ground(float xpos, float ypos)
  {
    //center point for ground is at middle of line
    pos = new PVector(xpos,ypos);
    seed = round(random(0,10000));
    vert = new ArrayList();
    
    vert.add(new PVector(0,0));
    vert.add(new PVector(0,0));
    vert.add(new PVector(wide/2,0));
    vert.add(new PVector(wide,0));
    vert.add(new PVector(wide,0));
  }
  
  void render(float xpos)
  {
    //if not on screen
    if (pos.x < xpos - 100 || pos.x > xpos + width)
    {
      frames_taken = max(0,frames_taken - 2);
    }
    else
    {
      frames_taken = min(round(2/SKETCH_STEP/5),frames_taken + 1);
    }
    if (frames_taken <= 0)
    {
      return;
    }
    
    pushMatrix();
    translate(pos.x,pos.y);
    sketch_line(vert,seed,frames_taken*4);
    sketch_line(vert,seed*100,frames_taken*5);
    popMatrix();
  }
}