boolean showMenu=true;
boolean showNormals=false, showVertices=false, showEdges=false, showTriangles=true,  showSelectedTriangle=true, showLabels=false, showPath=false;  // flags for rendering
boolean showSkeleton=true, showSelectedLake=true, showOtherLakes=true, showDistance=false, showEB=false, showEBrec=false, showClusters=true;
int radio=1;

void loadButtons() {
   Buttons.add(new button("radio",-2,radio,2,0,10));
   }
   
void loadToggles() {
  // ACTIONS
   Toggles.add(new toggle("home view",false));
  // TOGGLES
   Toggles.add(new toggle("show vertices",showVertices));
    }

void checkMenu() {
  int k= Buttons.click();  int m=-1; 
  if(k==++m)  radio=int(Buttons.v(m));

  k= Toggles.click();   m=-1; 
  // ACTIONS
  if(k==++m) {Toggles.B[m].V=false; C.F.setToPoint(Cbox); C.D=Rbox*2; C.U.setTo(0,1,0); C.E.setToPoint(C.F); C.E.addVec(new vec(0,0,1)); C.pullE(); C.pose(); };

  // TOGGLES
  if(k==++m) showVertices=Toggles.v(m);
  
   }
void menu () {
     if(showMenu) {
     Buttons.show(); Toggles.show(); 
     pushMatrix(); translate(width-290,Buttons.depth());
     text("Viewer for triangle meshes",0,0); translate(0,20);
     text("built in Processing by Jarek Rossignac",0,0); translate(0,20);
 //    text("last file read: "+lastRead,0,0); translate(0,20);
       popMatrix();
     };
   }

   
buttons Buttons= new buttons();
 
class button {
  int x=0, y=0; String name = "valeur"; float V=1.234, Vmin=-10, Vdefault = 0, Vmax=10, Vincrement=0.1, VfastIncrement=1; 
  int d=18, i=4;
  button() {};
  button(String _name, float _Vmin, float _Vdefault, float _Vmax, float _Vincrement, float _VfastIncrement) {
         name=_name; Vmin=_Vmin; Vdefault= _Vdefault; Vmax= _Vmax; Vincrement= _Vincrement; VfastIncrement= _VfastIncrement; V=Vdefault; };
  void putAt(int _x, int _y) {x=_x; y=_y;};
  float v() {return(V);}
  void show() {
     stroke(dgreen); fill(green); rect(x+i,y,d,d); rect(x+i+d+i,y,d,d); rect(x+i+2*(d+i),y,d,d); rect(x+i+3*(d+i),y,d,d); rect(x+i+4*(d+i),y,d,d);
     fill(black); noStroke(); text(" |<  -  .  +  >| "+Format(V,4,4)+" = "+name,x,y+14); noFill();
    };
  boolean click() {
    if ( (x+i<mouseX)&&(mouseX<x+5*(d+i)) && (y<mouseY)&&(mouseY<y+d) ) {
      if ( (x+i<mouseX) && (mouseX<x+i+d) ) V=max(Vmin,V-VfastIncrement);
      if ( (x+i+d+i<mouseX) && (mouseX<x+i+d+d+i) ) V=max(Vmin,V-Vincrement);
      if ( (x+i+2*(d+i)<mouseX) && (mouseX<x+i+d+2*(d+i)) ) V=Vdefault;
      if ( (x+i+3*(d+i)<mouseX) && (mouseX<x+i+d+3*(d+i)) ) V=min(Vmax,V+Vincrement);
      if ( (x+i+4*(d+i)<mouseX) && (mouseX<x+i+d+4*(d+i)) ) V=min(Vmax,V+VfastIncrement);
      return(true);
      };
    return(false); 
    } 
  }

class buttons {
  int d=18, i=4;
  button [] B = new button [30];
  int nb = 0;
  buttons () {};
  void add(button b){B[nb]=b; B[nb].putAt(width-300,nb*(d+i)); nb++;};
  void setButtonTo(int i, button b) { B[i]=b; B[i].putAt(width-300,i*(d+i));};
  void reset(){ nb=0;};
  void show() { fill(grey); noStroke(); rect(width-300,0,300,height); for (int i=0; i<nb; i++) B[i].show(); }
  float v (int i) {return(B[i].v());}
  void setValue(int i, float v) {B[i].V=v;};
  int click () {int k=-1; for (int i=0; i<nb; i++) if (B[i].click()) {k=i; println(i+": "+B[k].name+" = "+this.v(k)); }; return(k); }
  int depth () {return((d+i)*(nb+1));}
  }

toggles Toggles= new toggles();

class toggles {
  int d=18, i=4;
  toggle [] B = new toggle [30];
  int nb = 0;
  toggles () {};
  void add(toggle b){B[nb]=b; B[nb].putAt(width-300,height-(nb+1)*(d+i)); nb++;};
  void setToggleTo(int i, toggle b) { B[i]=b; B[i].putAt(width-300,height-(i+1)*(d+i));};
  void reset(){ nb=0;};
  void show() { noStroke(); for (int i=0; i<nb; i++) B[i].show(); }
  boolean v (int i) {return(B[i].v());}
  void setValue(int i, boolean v) {B[i].V=v;};
  int click () {int k=-1; for (int i=0; i<nb; i++) if (B[i].click()) {k=i; println(i+": "+B[k].name+" = "+this.v(k)); }; return(k); }
  }
  
class toggle {
  int x=0, y=0; String name = "valeur"; boolean V=false; 
  int d=18, w=200, i=4;
  toggle() {};
  toggle(String _name, boolean _V) {name=_name; V=_V; };
  void putAt(int _x, int _y) {x=_x; y=_y;};
  boolean v() {return(V);}
  void show() {stroke(dcyan); if(V) {fill(green); } else { fill(yellow); }; rect(x+i,y,w,d); 
     strokeWeight(3); if(V) stroke(dcyan); else stroke(cyan); line(x+i-1,y-1,x+i+w,y-1); line(x+i-1,y-1,x+i-1,y+d-1);  
     if(V) stroke(cyan); else stroke(dcyan); line(x+i+w+1,y+d+1,x+i+w+1,y); line(x+i+w+1,y+d+1,x+i,y+d+1);   
     fill(black); noStroke(); text(name,x+5,y+14); noFill(); };
  boolean click() {if ( (x+i<mouseX)&&(mouseX<x+i+w) && (y<mouseY)&&(mouseY<y+d) ) {V=!V; return(true); }; return(false); } 
  }

  String  Format(int v, int n) {String s=str(v); String spaces = "                               ";
   int L = max(0,n-s.length());
   String front = spaces.substring(0, L);
   return(front+s);
  };

String  Format(String s, int n) {String spaces = "                                 ";
    int L = max(0,n-s.length());
    String back = spaces.substring(0, L);
    return(s+back);
  };

String  Format(float f, int n, int z) {
   String sign = "-"; if (f>=0) sign="+";
   String spaces = "                                ";
   String s=nf(abs(f),n,z); 
   while (s.indexOf("0")==0) {s=s.substring(1,s.length());};
   int b=s.indexOf("."); int a=max(0,n-b); int c=s.length()-b-1;  int d=0;
   if (c>z) {s=s.substring(0,b+1+z); c=z;} else { d=z-c;};
   String front = spaces.substring(0, a);
   String back = spaces.substring(0, d);
   return(front+sign+s+back);
  };