// stage -----------------------------------------------------------------------

class stage {

  int n = 6;	// scala
  float off;	// filter position
  
  
  // box -----------------------------------------------------------------------
  
  void scala() {
  
    colorMode(RGB, 255);

    textFont(univers, 12);
    //textSpace(OBJECT_SPACE);
    textAlign(LEFT);

    rectMode(CORNER);
    
    if (showbgimage) {image(vimage.c, 0, 0);}

    for(int i = 0; i < n; i++) {

      pushMatrix();
      
        translate(0, 0 ,i * 255/n * d);
	
        pushMatrix();
        
        rotateX(-rxnum);
        
        fill(255, i * 100/(n-1) + 50);
        text(int(i*(max-min)/n) + min + " dB", imgwidth+10 , 18/2);
        
        popMatrix();
		  
        noFill();
        stroke(255, i * 100/(n-1) + 50);
		  
        rect(0, 0, imgwidth, imgheight);
      
      popMatrix();

    }
  
  }
  
  // frequency box -----------------------------------------------------------------------
  
  void freqscala() {
  
    colorMode (HSB, 360, 100, 100, 100);

    textFont(univers, 12);
    //textSpace(OBJECT_SPACE);
    textAlign(LEFT);

    rectMode(CORNER);
    
    if (showbgimage) {image(vimage.c, 0, 0);}

    for(int i = 0; i < img.length; i++) {

      pushMatrix();
      
        translate(0, 0 ,i*o);
	
        pushMatrix();
        
        rotateX(-rxnum);
        
        fill(convertHSB(i, img.length), 100, 100);
        text(mydisplay.frequencies[i] + " Hz", imgwidth+10 , 18/2);
        
        popMatrix();

        if (i != count) {
          stroke(0, 0, i * 50/img.length + 10);
        } else {
          stroke(0, 0, 100);
        }
        
	noFill();	  
        rect(0, 0, imgwidth, imgheight);
      
      popMatrix();

    }

  }

  
  // dB layer ------------------------------------------------------------------
  
  void layer() {
   
    if (abs(off-offnum) >  0.01) { off -= (off-offnum)/1.5; };
    
    pushMatrix();
    
    translate(0, 0, off * d);
    
    pushMatrix();
    
      stroke(255);
      fill(0, 200);
      rect(0, 0, imgwidth, imgheight);
    
    popMatrix();
    
    translate(imgwidth + 10, imgheight);
    
    pushMatrix();

      fill(255);
      
      textFont(univers, 13);
      
      rotateX(-rxnum);
      text(int(off*(max-min)/255) + min + " dB",0 ,0 );
      
    popMatrix();
      
    popMatrix();
  }

}