//マウスとの距離を可視化する実験
//距離を、回転速度に反映
//

int XNUM = 21;
int YNUM = 13;
int NODENUM = XNUM * YNUM;

boolean IsFill = true;
boolean IsStroke = false;
boolean IsBackground = false;
int ShapeMode = 0;

NodeClass[] NdList = new NodeClass[ NODENUM ];

void setup(){
  size(640,360);
  background(255);
  noFill();
  noStroke();
  rectMode(CENTER_DIAMETER);
  ellipseMode(CENTER_DIAMETER);
  
  for( int x=0; x<XNUM; x++){
    for(int y=0; y<YNUM ; y++){
    int ndID = y * XNUM + x;
    NdList[ndID] = new NodeClass(x*32, y*32, 5);
    }
  }
}

void loop(){
  if(IsBackground){
    background(255);
  }

 for( int x=0; x<XNUM; x++){
    for(int y=0; y<YNUM ; y++){
    int ndID = y * XNUM + x;
      NdList[ndID].calc();
      NdList[ndID].view();
    }
  }
}

void mousePressed(){
  ShapeMode += 1;
}

void keyPressed(){
  //println(key);
  switch (key){
    case 49:
      IsFill = true;
      IsStroke = false;
      IsBackground = false;
      break;
    case 50:
      IsFill = true;
      IsStroke = true;
      IsBackground = true;
      break;
    case 51:
      IsFill = false;
      IsStroke = true;
      IsBackground = true;
      break;
    case 52:
      ShapeMode += 1;
      break;
  }
}

//------------------------------------------------------------------

class NodeClass{
  float _x, _y;
  float _r, _rv;
  color _col;

  NodeClass(float x, float y, float r){
    _x = x;
    _y = y;
    _r = r;
    _rv = 0;
    
    float rr = random(0,255);
    float gg = random(0,rr);
    float bb = random(0,gg);
    _col = color(rr,gg,bb,100);
  }
  
  void calc(){
    float mx = mouseX;
    float my = mouseY;
    float dx = mouseX - _x;
    float dy = mouseY - _y;
    float dist = sqrt(dx*dx + dy*dy);
    
    if(dist <1){
      dist = 1;
    }
    
    float rdist = sqrt(dist);
    _rv =  0.4 / rdist;
  }
  
  void view(){
     if(IsFill){  
       fill(_col);  
     }else{
       noFill();
     }
     if(IsStroke){
         stroke(0);
      }else{
        noStroke();   
      } 
      
    push();
      translate(_x, _y,0);
      rotate(_r);
      switch( ShapeMode){
       case 0: 
         rect(0, 0, 120, 10); 
         break;
       case 1:
         rect(0, 0, 50, 5);
         rotate(1);
         rect(0, 0, 50, 5);
         break;
       case 2:
         translate(30,0,0);
         ellipse(0,0,20,20);
         //translate(-100,0,0);
        // fill(255);
         //ellipse(0,0,10,10);
         break;
       case 3:
         rect(0,0,50,50);
         break;
       default:
         ShapeMode = 0;
      }
      
      
    pop();
    
    if( _r > 360){
      _r -= 360;
    }else{
      _r +=_rv;
    }
  }
}