need help for boolean array

merikensa..

in Contributed Library Questions • 1 year ago

Hi everyone.
I'm quite a newbie in programming, and just learned processing for about 2 months. I'm currently working on a marker based augmented reality program using Nyartoolkit for my school project. The idea is to display a 3d models, texts (a name for each model), and play a sound for each model that can be re-triggered with a key press. So with my very limited knowledge on programming (not to mention bad English) I wrote a code based on many tutorials and processing references. The code itself works fine as I wanted, but as you can see, it's a mess and inefficient, especially the audio sample trigger part. I need the trigger so the sound do not overlap with each other when a key is pressed, but all i can do is to write all the boolean trigger for each marker tracking. I already tried to simplify it with boolean array, but I can't get it to work. I plan to put more than 20 models so I think the code will be too much. Please help me to use boolean array, or is there a better way?
By the way I use processing 1.2. and here's the code:

import codeanticode.gsvideo.*;
import jp.nyatla.nyar4psg.*;
import processing.opengl.*;
import javax.media.opengl.*;
import saito.objloader.*;
import ddf.minim.*;
Minim minim;

//sound variable
AudioSample sndGajah;
AudioSample sndBadak;
AudioSample sndPenguin;
AudioSample sndFlamingo;
AudioSample sndKura;
AudioSample sndKelinci;
AudioSample sndDeer;

AudioPlayer plgajah;
AudioPlayer plbadak;
AudioPlayer plpenguin;
AudioPlayer plflamingo;
AudioPlayer plkura;
AudioPlayer plkelinci;
AudioPlayer pldeer;

GSCapture cam;
NyARMultiBoard nya;
OBJModel modelgajah ;
OBJModel modelbadak ;
OBJModel modelpenguin;
OBJModel modelflamingo;
OBJModel modelkura;
OBJModel modelkelinci;
OBJModel modeldeer;
PFont fontA;
label lbl = new label();
teks nama = new teks();
//sound TRIGGER
boolean trgrGajah;
boolean trgrBadak;
boolean trgrPenguin;
boolean trgrFlamingo;
boolean trgrKura;
boolean trgrKelinci;
boolean trgrDeer;

void setup() {

size(640,480,P3D);
frame.setResizable(true);
colorMode(RGB, 100);
cam=new GSCapture(this,width,height);
String[] patts = {"patt.1", "patt.2", "patt.3", "patt.4", "patt.5", "patt.6", "patt.7"};
double[] widths = {80,80,80,80,80,80,80};
nya=new NyARMultiBoard(this,width,height,"camera_para.dat",patts,widths);
print(nya.VERSION);

nya.gsThreshold=120;//(0<n<255) default=110

nya.cfThreshold=0.5;//(0.0<n<1.0) default=0.4
// load audio file
minim = new Minim(this);
sndGajah = minim.loadSample("elephant.mp3", 2048);
sndBadak = minim.loadSample("rhinoceros2.mp3", 2048);
sndPenguin = minim.loadSample("penguin.mp3", 2048);
sndFlamingo = minim.loadSample("flamingo.mp3", 2048);
sndKura = minim.loadSample("turtle.mp3", 2048);
sndKelinci = minim.loadSample("rabbit.mp3", 2048);
sndDeer = minim.loadSample("deer.mp3", 2048);

plgajah = minim.loadFile("elephant.mp3", 2048);
plbadak = minim.loadFile("rhinoceros2.mp3", 2048);
plpenguin = minim.loadFile("penguin.mp3", 2048);
plflamingo = minim.loadFile("flamingo.mp3", 2048);
plkura = minim.loadFile("turtle.mp3", 2048);
plkelinci = minim.loadFile("rabbit.mp3", 2048);
pldeer = minim.loadFile("deer.mp3", 2048);

fontA = loadFont("OneTrickPonyOT-56.vlw");
textFont(fontA,56);

//load model
modelgajah = new OBJModel(this, "gajah.obj", "absolute", TRIANGLES);
modelgajah.enableDebug();
modelgajah.scale(1);
modelgajah.translateToCenter();
modelgajah.enableTexture();

modelbadak = new OBJModel(this, "badak2.obj", "absolute", TRIANGLES);
modelbadak.enableDebug();
modelbadak.scale(1);
modelbadak.translateToCenter();
modelbadak.enableTexture();
modelbadak.enableMaterial() ;

modelpenguin = new OBJModel(this, "penguin.obj", "absolute", TRIANGLES);
modelpenguin.enableDebug();
modelpenguin.scale(1);
modelpenguin.translateToCenter();
modelpenguin.enableTexture();
modelpenguin.enableMaterial() ;

    modelflamingo = new OBJModel(this, "flamingo.obj", "absolute", TRIANGLES);
modelflamingo.enableDebug();
modelflamingo.scale(1);
modelflamingo.translateToCenter();
modelflamingo.enableTexture();
modelflamingo.enableMaterial() ;

    modelkura = new OBJModel(this, "kura.obj", "absolute", TRIANGLES);
modelkura.enableDebug();
modelkura.scale(3);
modelkura.translateToCenter();
modelkura.enableTexture();
modelkura.enableMaterial() ;

    modelkelinci = new OBJModel(this, "kelinci.obj", "absolute", TRIANGLES);
modelkelinci.enableDebug();
modelkelinci.scale(1);
modelkelinci.translateToCenter();
modelkelinci.enableTexture();
modelkelinci.enableMaterial() ;

    modeldeer = new OBJModel(this, "deer.obj", "absolute", TRIANGLES);
modeldeer.enableDebug();
modeldeer.scale(1);
modeldeer.translateToCenter();
modeldeer.enableTexture();
modeldeer.enableMaterial() ;

}

void draw() {

if (cam.available() !=true) {
    return;
}

cam.read();
hint(DISABLE_DEPTH_TEST);
image(cam,0,0,width,height);

//display label
lbl.display();
nama.tksGajah();
nama.tksBadak();
nama.tksPenguin();
nama.tksFlamingo();
nama.tksKura();
nama.tksKelinci();
nama.tksDeer();

hint(ENABLE_DEPTH_TEST);

// if *any* markers have been detected this will be true
if (nya.detect(cam))
{
    // depth test back on, we're going to draw 3D YEAH!!
    hint(ENABLE_DEPTH_TEST);
    // for all detected markers:
    for (int i=0; i < nya.markers.length; i++)
    {
      if (nya.markers[i].detected)
      {
       // set the model-view transform to that of the marker
       // this will adapt automatically to P3D or OPENGL renderers
       nya.markers[i].beginTransform();

       translate(0,0,20);
       // draw gajah
       if (i == 0)
       {
          trgrBadak = false;
          trgrPenguin = false;
          trgrFlamingo = false;
          trgrKura = false;
          trgrKelinci = false;
          trgrDeer = false;
          trgrGajah = true;
          plgajah.play();
          noStroke();
          modelgajah.draw();
          lbl.visible();
          nama.gajahvisible();

       }
       // draw badak
       else if (i == 1)
       {
          trgrGajah = false;
          trgrPenguin = false;
          trgrFlamingo = false;
          trgrKura = false;
          trgrKelinci = false;
          trgrDeer = false;
          trgrBadak = true;
          plbadak.play();
          noStroke();
          modelbadak.draw();
          lbl.visible();
          nama.badakvisible();
       }
       // draw penguin
       else if (i == 2)
       {
          trgrGajah = false;
          trgrBadak = false;
          trgrFlamingo = false;
          trgrKura = false;
          trgrKelinci = false;
          trgrDeer = false;
          trgrPenguin = true;
          plpenguin.play();
          noStroke();
          modelpenguin.draw();
          lbl.visible();
          nama.penguinvisible();
       }
       // draw flamingo
       else if (i == 3)
       {
          trgrGajah = false;
          trgrBadak = false;
          trgrPenguin = false;
          trgrKura = false;
          trgrKelinci = false;
          trgrDeer = false;
          trgrFlamingo = true;
          plflamingo.play();
          noStroke();
          modelflamingo.draw();
          lbl.visible();
          nama.flamingovisible();
       }
       // draw kura
       else if (i == 4)
       {
          trgrGajah = false;
          trgrBadak = false;
          trgrPenguin = false;
          trgrFlamingo = false;
          trgrKelinci = false;
          trgrDeer = false;
          trgrKura = true;
          plkura.play();
          noStroke();
          modelkura.draw();
          lbl.visible();
          nama.kuravisible();
       }
       // draw kelinci
       else if (i == 5)
       {
          trgrGajah = false;
          trgrBadak = false;
          trgrPenguin = false;
          trgrFlamingo = false;
          trgrKura = false;
          trgrDeer = false;
          trgrKelinci = true;
          plkelinci.play();
          noStroke();
          modelkelinci.draw();
          lbl.visible();
          nama.kelincivisible();
       }

       // draw rusa
       else if (i == 6)
       {
          trgrGajah = false;
          trgrBadak = false;
          trgrPenguin = false;
          trgrFlamingo = false;
          trgrKura = false;
          trgrKelinci = false;
          trgrDeer = true;
          pldeer.play();
          noStroke();
          modeldeer.draw();
          lbl.visible();
          nama.deervisible();
       }

       else {


       }
       // after drawing marker-relative 3D geometry, we
       // HAVE to end the transform (so now we're back in
       // world space)
       nya.markers[i].endTransform();

      }
    }
}

}

void keyPressed()
{
if ((keyPressed == true) && (trgrGajah == true)) sndGajah.trigger();
if ((keyPressed == true) && (trgrBadak == true)) sndBadak.trigger();
if ((keyPressed == true) && (trgrPenguin == true)) sndPenguin.trigger();
if ((keyPressed == true) && (trgrFlamingo == true)) sndFlamingo.trigger();
if ((keyPressed == true) && (trgrKura == true)) sndKura.trigger();
if ((keyPressed == true) && (trgrKelinci == true)) sndKelinci.trigger();
if ((keyPressed == true) && (trgrDeer == true)) sndDeer.trigger();
}

void stop()
{
// always close Minim audio classes when you are done with them

plgajah.close();
plbadak.close();
plpenguin.close();
plflamingo.close();
plkura.close();
plkelinci.close();
pldeer.close();
sndGajah.stop();
sndBadak.stop();
sndPenguin.stop();
sndFlamingo.stop();
sndKura.stop();
sndKelinci.stop();
sndDeer.stop();
minim.stop();

super.stop();
}

Oh, and there are 2 classes for texts and background label, but I think it's not related so i don't include them.
Thanks very much in advance! (and sorry for my bad english)

Replies(7)

PhiLho

Re: need help for boolean array

1 year ago

" I already tried to simplify it with boolean array, but I can't get it to work."
It might be interesting to see your attempt, perhaps it was a simple error easy to fix.

Just in case it can help, you can take a look at the article: From several variables to arrays

merikensa..

Re: need help for boolean array

1 year ago

Thanks for the reply and pointer

well here it is:

import codeanticode.gsvideo.*;
import jp.nyatla.nyar4psg.*;
import processing.opengl.*;
import javax.media.opengl.*;
import saito.objloader.*;
import ddf.minim.*;
Minim minim;

//sound variable
AudioSample sndGajah;
AudioSample sndBadak;
AudioSample sndPenguin;
AudioSample sndFlamingo;
AudioSample sndKura;
AudioSample sndKelinci;
AudioSample sndDeer;

AudioPlayer plgajah;
AudioPlayer plbadak;
AudioPlayer plpenguin;
AudioPlayer plflamingo;
AudioPlayer plkura;
AudioPlayer plkelinci;
AudioPlayer pldeer;

GSCapture cam;
NyARMultiBoard nya;
OBJModel modelgajah ;
OBJModel modelbadak ;
OBJModel modelpenguin;
OBJModel modelflamingo;
OBJModel modelkura;
OBJModel modelkelinci;
OBJModel modeldeer;
PFont fontA;
label lbl = new label();
teks nama = new teks();
//sound TRIGGER
boolean trgrGajah;
boolean trgrBadak;
boolean trgrPenguin;
boolean trgrFlamingo;
boolean trgrKura;
boolean trgrKelinci;
boolean trgrDeer;
// BOOLEAN ARRAY
boolean[] triggers = new boolean[7];

void setup() {

size(640,480,P3D);
frame.setResizable(true);
colorMode(RGB, 100);
cam=new GSCapture(this,width,height);

// BOOLEAN ARRAY ITEMS
triggers[0] = trgrGajah;
triggers[1] = trgrBadak;
triggers[2] = trgrPenguin;
triggers[3] = trgrFlamingo;
triggers[4] = trgrKura;
triggers[5] = trgrKelinci;
triggers[6] = trgrDeer;

String[] patts = {"patt.1", "patt.2", "patt.3", "patt.4", "patt.5", "patt.6", "patt.7"};
double[] widths = {80,80,80,80,80,80,80};
nya=new NyARMultiBoard(this,width,height,"camera_para.dat",patts,widths);
print(nya.VERSION);

nya.gsThreshold=120;//(0<n<255) default=110

nya.cfThreshold=0.5;//(0.0<n<1.0) default=0.4
// load audio file
minim = new Minim(this);
sndGajah = minim.loadSample("elephant.mp3", 2048);
sndBadak = minim.loadSample("rhinoceros2.mp3", 2048);
sndPenguin = minim.loadSample("penguin.mp3", 2048);
sndFlamingo = minim.loadSample("flamingo.mp3", 2048);
sndKura = minim.loadSample("turtle.mp3", 2048);
sndKelinci = minim.loadSample("rabbit.mp3", 2048);
sndDeer = minim.loadSample("deer.mp3", 2048);

plgajah = minim.loadFile("elephant.mp3", 2048);
plbadak = minim.loadFile("rhinoceros2.mp3", 2048);
plpenguin = minim.loadFile("penguin.mp3", 2048);
plflamingo = minim.loadFile("flamingo.mp3", 2048);
plkura = minim.loadFile("turtle.mp3", 2048);
plkelinci = minim.loadFile("rabbit.mp3", 2048);
pldeer = minim.loadFile("deer.mp3", 2048);

fontA = loadFont("OneTrickPonyOT-56.vlw");
textFont(fontA,56);

//load model
modelgajah = new OBJModel(this, "gajah.obj", "absolute", TRIANGLES);
modelgajah.enableDebug();
modelgajah.scale(1);
modelgajah.translateToCenter();
modelgajah.enableTexture();

modelbadak = new OBJModel(this, "badak2.obj", "absolute", TRIANGLES);
modelbadak.enableDebug();
modelbadak.scale(1);
modelbadak.translateToCenter();
modelbadak.enableTexture();
modelbadak.enableMaterial() ;

modelpenguin = new OBJModel(this, "penguin.obj", "absolute", TRIANGLES);
modelpenguin.enableDebug();
modelpenguin.scale(1);
modelpenguin.translateToCenter();
modelpenguin.enableTexture();
modelpenguin.enableMaterial() ;

    modelflamingo = new OBJModel(this, "flamingo.obj", "absolute", TRIANGLES);
modelflamingo.enableDebug();
modelflamingo.scale(1);
modelflamingo.translateToCenter();
modelflamingo.enableTexture();
modelflamingo.enableMaterial() ;

    modelkura = new OBJModel(this, "kura.obj", "absolute", TRIANGLES);
modelkura.enableDebug();
modelkura.scale(3);
modelkura.translateToCenter();
modelkura.enableTexture();
modelkura.enableMaterial() ;

    modelkelinci = new OBJModel(this, "kelinci.obj", "absolute", TRIANGLES);
modelkelinci.enableDebug();
modelkelinci.scale(1);
modelkelinci.translateToCenter();
modelkelinci.enableTexture();
modelkelinci.enableMaterial() ;

    modeldeer = new OBJModel(this, "deer.obj", "absolute", TRIANGLES);
modeldeer.enableDebug();
modeldeer.scale(1);
modeldeer.translateToCenter();
modeldeer.enableTexture();
modeldeer.enableMaterial() ;
}

void draw() {

if (cam.available() !=true) {
    return;
}

cam.read();
hint(DISABLE_DEPTH_TEST);
image(cam,0,0,width,height);

//display label
lbl.display();
nama.tksGajah();
nama.tksBadak();
nama.tksPenguin();
nama.tksFlamingo();
nama.tksKura();
nama.tksKelinci();
nama.tksDeer();

hint(ENABLE_DEPTH_TEST);

// if *any* markers have been detected this will be true
if (nya.detect(cam))
{
    // depth test back on, we're going to draw 3D YEAH!!
    hint(ENABLE_DEPTH_TEST);
    // for all detected markers:
    for (int i=0; i < nya.markers.length; i++)
    {
      if (nya.markers[i].detected)
      {
       // set the model-view transform to that of the marker
       // this will adapt automatically to P3D or OPENGL renderers
       nya.markers[i].beginTransform();

       translate(0,0,20);
       // draw gajah
       if (i == 0)
       {
          for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[0] = true;
          plgajah.play();
          noStroke();
          modelgajah.draw();
          lbl.visible();
          nama.gajahvisible();
       }
       // draw badak
       else if (i == 1)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[1] = true;
          plbadak.play();
          noStroke();
          modelbadak.draw();
          lbl.visible();
          nama.badakvisible();
       }
       // draw penguin
       else if (i == 2)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[2] = true;
          plpenguin.play();
          noStroke();
          modelpenguin.draw();
          lbl.visible();
          nama.penguinvisible();
       }
       // draw flamingo
       else if (i == 3)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[3] = true;;
          plflamingo.play();
          noStroke();
          modelflamingo.draw();
          lbl.visible();
          nama.flamingovisible();
       }
       // draw kura
       else if (i == 4)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[4] = true;
          plkura.play();
          noStroke();
          modelkura.draw();
          lbl.visible();
          nama.kuravisible();
       }
       // draw kelinci
       else if (i == 5)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[5] = true;
          plkelinci.play();
          noStroke();
          modelkelinci.draw();
          lbl.visible();
          nama.kelincivisible();
       }

       // draw rusa
       else if (i == 6)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[6] = true;
          pldeer.play();
          noStroke();
          modeldeer.draw();
          lbl.visible();
          nama.deervisible();
       }

       else {

       }
       // after drawing marker-relative 3D geometry, we
       // HAVE to end the transform (so now we're back in
       // world space)
       nya.markers[i].endTransform();

      }
    }
}

}

void keyPressed()
{
if ((keyPressed == true) && (triggers[0] = true)) sndGajah.trigger();
if ((keyPressed == true) && (triggers[1] = true)) sndBadak.trigger();
if ((keyPressed == true) && (triggers[2] = true)) sndPenguin.trigger();
if ((keyPressed == true) && (triggers[3] = true)) sndFlamingo.trigger();
if ((keyPressed == true) && (triggers[4] = true)) sndKura.trigger();
if ((keyPressed == true) && (triggers[5] = true)) sndKelinci.trigger();
if ((keyPressed == true) && (triggers[6] = true)) sndDeer.trigger();
}

void stop()
{
// always close Minim audio classes when you are done with them

plgajah.close();
plbadak.close();
plpenguin.close();
plflamingo.close();
plkura.close();
plkelinci.close();
pldeer.close();
sndGajah.stop();
sndBadak.stop();
sndPenguin.stop();
sndFlamingo.stop();
sndKura.stop();
sndKelinci.stop();
sndDeer.stop();
minim.stop();

super.stop();
}

as you can see, i tried to set all values in the triggers array to false, and then set one value true so there is only one sound playing when triggered.
it shows no errors, but it just doesn't work, the sounds are overlapping when triggered.

benja

Re: need help for boolean array

1 year ago

Hey, without testing your code, i think your mistake is in "keyPressed()"

if ((keyPressed == true) && (triggers[0] = true)) sndGajah.trigger();

the second condition is always true , because you assign true to the value instead of comparing it to true.
It should be like this, with two "=" intead of one.

if ((keyPressed == true) && (triggers[0] == true)) sndGajah.trigger();

merikensa..

Re: Re: need help for boolean array

1 year ago

Wow benja! You're right! Thanks a lot pal, it works now!

I didnt think the solution is that simple, how silly of me..

PhiLho

Re: need help for boolean array

1 year ago

And since the tests are done within the keyPressed() function, the keyPressed == true is redundant.
Actually, you can just test:
if (triggers[0]) sndGaja.trigger();
A boolean doesn't need the == true test, and this form would avoid to do the error you did...

Also, if you put your sounds in an array, you can avoid repetitive code:
for (int i = 0; i < triggers.length; i++) {
if (triggers[i]) sounds[i].trigger();
}

merikensa..

Re: Re: need help for boolean array

1 year ago

Hey thanks a lot PhiLho , I'll try it later, I'm on something else right now.
You're really helpful, thanks again!

merikensa..

Re: Re: need help for boolean array

1 year ago

Hi again

I have made use of arrays, my code is quite simpler now and it works. Thanks to you. Here's what I got:

import codeanticode.gsvideo.*;
import jp.nyatla.nyar4psg.*;
import processing.opengl.*;
import javax.media.opengl.*;
import saito.objloader.*;
import ddf.minim.*;
Minim minim;
GSCapture cam;
NyARMultiBoard nya;
PFont fontA;
label lbl = new label();
// BOOLEAN ARRAY for triggers
boolean[] triggers = new boolean[7];
// Audio sample array
AudioSample[] aSamples = new AudioSample [7];
// Audio player array
AudioPlayer[] aPlayers = new AudioPlayer [7];
//3D Model Array
OBJModel[] models = new OBJModel [7];

void setup() {

size(640,480,P3D);
frame.setResizable(true);
colorMode(RGB, 100);
cam=new GSCapture(this,width,height);

String[] patts = {"patt.1", "patt.2", "patt.3", "patt.4", "patt.5", "patt.6", "patt.7"};
double[] widths = {80,80,80,80,80,80,80};
nya=new NyARMultiBoard(this,width,height,"camera_para.dat",patts,widths);
print(nya.VERSION);
nya.gsThreshold=120;//(0<n<255) default=110
nya.cfThreshold=0.5;//(0.0<n<1.0) default=0.4
// load audio file
minim = new Minim(this);
aSamples[0] = minim.loadSample("elephant.mp3", 2048);
aSamples[1] = minim.loadSample("rhinoceros2.mp3", 2048);
aSamples[2] = minim.loadSample("penguin.mp3", 2048);
aSamples[3] = minim.loadSample("flamingo.mp3", 2048);
aSamples[4] = minim.loadSample("turtle.mp3", 2048);
aSamples[5] = minim.loadSample("rabbit.mp3", 2048);
aSamples[6] = minim.loadSample("deer.mp3", 2048);

aPlayers[0] = minim.loadFile("elephant.mp3", 2048);
aPlayers[1] = minim.loadFile("rhinoceros2.mp3", 2048);
aPlayers[2] = minim.loadFile("penguin.mp3", 2048);
aPlayers[3] = minim.loadFile("flamingo.mp3", 2048);
aPlayers[4] = minim.loadFile("turtle.mp3", 2048);
aPlayers[5] = minim.loadFile("rabbit.mp3", 2048);
aPlayers[6] = minim.loadFile("deer.mp3", 2048);

fontA = loadFont("OneTrickPonyOT-56.vlw");
textFont(fontA,56);

//load model
models[0] = new OBJModel(this, "gajah.obj", "absolute", TRIANGLES);
models[0].enableDebug();
models[0].scale(1);
models[0].translateToCenter();
models[0].enableTexture();

models[1] = new OBJModel(this, "badak2.obj", "absolute", TRIANGLES);
models[1].enableDebug();
models[1].scale(1);
models[1].translateToCenter();
models[1].enableTexture();
models[1].enableMaterial() ;

models[2] = new OBJModel(this, "penguin.obj", "absolute", TRIANGLES);
models[2].enableDebug();
models[2].scale(1);
models[2].translateToCenter();
models[2].enableTexture();
models[2].enableMaterial() ;

    models[3] = new OBJModel(this, "flamingo.obj", "absolute", TRIANGLES);
models[3].enableDebug();
models[3].scale(1);
models[3].translateToCenter();
models[3].enableTexture();
models[3].enableMaterial() ;

    models[4] = new OBJModel(this, "kura.obj", "absolute", TRIANGLES);
models[4].enableDebug();
models[4].scale(3);
models[4].translateToCenter();
models[4].enableTexture();
models[4].enableMaterial() ;

    models[5] = new OBJModel(this, "kelinci.obj", "absolute", TRIANGLES);
models[5].enableDebug();
models[5].scale(1);
models[5].translateToCenter();
models[5].enableTexture();
models[5].enableMaterial() ;

    models[6] = new OBJModel(this, "deer.obj", "absolute", TRIANGLES);
models[6].enableDebug();
models[6].scale(1);
models[6].translateToCenter();
models[6].enableTexture();
models[6].enableMaterial() ;
}

void draw() {
if (cam.available() !=true) {
    return;
}
cam.read();
hint(DISABLE_DEPTH_TEST);
image(cam,0,0,width,height);
lbl.display();
hint(ENABLE_DEPTH_TEST);
if (nya.detect(cam))
{
    hint(ENABLE_DEPTH_TEST);
    // for all detected markers:
    for (int i=0; i < nya.markers.length; i++)
    {
      if (nya.markers[i].detected)
      {
       nya.markers[i].beginTransform();
       translate(0,0,20);
       // draw gajah
       if (i == 0)
       {
          for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false; // a for array
          }
          triggers[0] = true;
          aPlayers[0].play();
          noStroke();
          models[0].draw();
          lbl.visible();
          fill(255, 255, 255,255);
          textMode(SCREEN);
          textAlign(CENTER);
          text("Elephant", width/2, 74);
       }
       // draw badak
       else if (i == 1)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[1] = true;
          aPlayers[1].play();
          noStroke();
          models[1].draw();
          lbl.visible();
          fill(255, 255, 255,255);
          textMode(SCREEN);
          textAlign(CENTER);
          text("Rhinoceros", width/2, 74);
       }
       // draw penguin
       else if (i == 2)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[2] = true;
          aPlayers[2].play();
          noStroke();
          models[2].draw();
          lbl.visible();
          fill(255, 255, 255,255);
          textMode(SCREEN);
          textAlign(CENTER);
          text("Penguin", width/2, 74);
       }
       // draw flamingo
       else if (i == 3)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[3] = true;;
          aPlayers[3].play();
          noStroke();
          models[3].draw();
          lbl.visible();
          fill(255, 255, 255,255);
          textMode(SCREEN);
          textAlign(CENTER);
          text("Flamingo", width/2, 74);
       }
       // draw kura
       else if (i == 4)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[4] = true;
          aPlayers[4].play();
          noStroke();
          models[4].draw();
          lbl.visible();
          fill(255, 255, 255,255);
          textMode(SCREEN);
          textAlign(CENTER);
          text("Turtle", width/2, 74);
       }
       // draw kelinci
       else if (i == 5)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[5] = true;
          aPlayers[5].play();
          noStroke();
          models[5].draw();
          lbl.visible();
          fill(255, 255, 255,255);
          textMode(SCREEN);
          textAlign(CENTER);
          text("Rabbit", width/2, 74);
       }
       // draw rusa
       else if (i == 6)
       {
           for(int a = 0; a < triggers.length; ++a){
            triggers[a] = false;
          }
          triggers[6] = true;
          aPlayers[6].play();
          noStroke();
          models[6].draw();
          lbl.visible();
          fill(255, 255, 255,255);
          textMode(SCREEN);
          textAlign(CENTER);
          text("Deer", width/2, 74);
       }
       else {

       }
       nya.markers[i].endTransform();
      }
    }
}

}

void keyPressed()
{
for (int i = 0; i < triggers.length; i++) {
    if (triggers[i]) aSamples[i].trigger();
}
}

void stop()
{
// close Minim audio classes
for (int p = 0; p < aPlayers.length; p++) {
     aPlayers[p].close();
}
for (int s = 0; s < aSamples.length; s++) {
     aSamples[s].close();
}
minim.stop();
super.stop();
}

class label{
int alphaValue;
void display(){
noStroke();
fill(0, 0, 0, alphaValue);
alphaValue = 0;
rectMode(CENTER);
rect(width/2, 60, 300, 48,10,10,10,10);
}
void visible(){
alphaValue= 255;
}
}

But there's a thing i've been wondering about, the console shows this in red: "Display 0 does not exist, using the default display instead." What is this really means? The program works but i'm curious.

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