What I try to do is:
- Create a mesh of triangles (for now in sight) to have all Property Types calculated.
- With a VertexController, move the vertices of each triangle to trace the work done by the machine.

I do not try to keep the order of the vertices of the triangles because I assume that moving the vertices, the other properties of a triangle should not change. I also tried setting the normal (0, 1, 0) in the VertexController but nothing changes.

Here I show a sketch of what I hope will happen:
https://www.dropbox.com/s/o3md6eu9372mg54/Concept1.gif

As you say I try calling Object3D.disableVertexSharing() when add many triangles, but I get the same results: add 998 triangles in the same place result in 4 triangles in the mesh. When add 998 in different places result in 998 triangles in the mesh.

Thanks Egon and AGP.
I find my problem.
I did not know the order: setVertecController, compile and build.

PD: a float is 4 bytes long in Java. A triangle have:
- 3 vectors -> 3 * 3 * 4 = 36 bytes.
- 1 normal -> 1 * 3 * 4 = 12 bytes.
- 6 texture 2D coordinates (2 each vertex) -> 6 * 4 = 24 bytes.
- 1 texture ID -> 2 bytes (I suppose).
Total for a triangle = 36 + 12 + 24 + 2 = 74
Total size in memory for 200k triangles = 200,000 * 74 = 14,800,000 bytes = 14.1 MB
Missed I some thing?

Thanks Egon and AGP.
I correct you: I need 200,000 triangles, no 2,000,000. The 200,000 triangles is stored in about 8MB.
I did a test with many triangles. The refresh rate to 100,000 is ok for my application (2-4 frames per second), but is very slow loading the triangles (more than 5 minutes). I not tried more.
I´ll try to split the load to work in threads.

Egon, following your suggestion, I tried using a GenericVertexController, but the triangles are not moving.
To be safe, I first put the triangles in a visible place and then move to the position that they should be as the machine moves.
The GenericVertexController class is RepositionVertexes.

public class MainActivity extends Activity {

// Used to handle pause and resume...
private static MainActivity master = null;

private GLView mGLView;
private TextView tv;
private ImageButton bt;
private MyRenderer renderer = null;
private FrameBuffer fb = null;
private World world = null;
private RGBColor back = new RGBColor(50, 50, 100);

private Object3D tractor = null;
private Object3D sprayer = null;
private Object3D floor = null;
private Object3D track = null;
private Object3D track2 = null;
public RepositionVertexes RepositionVertexes_ = new RepositionVertexes();
static SimpleVector t0 = new SimpleVector();
static SimpleVector t1 = new SimpleVector();
static SimpleVector t2 = new SimpleVector();
private float tractor_direction_angle = 0;
private float turn_angle_click = 0.1f;
private SimpleVector tractor_direction = new SimpleVector();
final float working_width = 10;

private Light sun = null;

enum OpMode {
ROTATE, ADD, DELETE, ZOOM
}
public OpMode currentMode = OpMode.ROTATE;

private Button btIzquierda;

private Button btDerecha;

protected void onCreate(Bundle savedInstanceState) {

Logger.log("onCreate");

if (master != null) {
copy(master);
}

super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); //or whatever the layout you want to use
mGLView = (GLView) findViewById(R.id.graphics_glsurfaceview1);
Config.useNormalsFromOBJ = true;
Config.useRotationPivotFrom3DS = true;

tv = (TextView) findViewById(R.id.textView1);
bt = (ImageButton) findViewById(R.id.imageButton1);
btIzquierda = (Button) findViewById(R.id.btIzquierda);
btDerecha = (Button) findViewById(R.id.btDerecha);
mGLView.setEGLContextClientVersion(2);
mGLView.setEGLConfigChooser(new GLSurfaceView.EGLConfigChooser() {
public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
// Ensure that we get a 16bit framebuffer. Otherwise, we'll fall
// back to Pixelflinger on some device (read: Samsung I7500)
int[] attributes = new int[] { EGL10.EGL_DEPTH_SIZE, 16, EGL10.EGL_NONE };
EGLConfig[] configs = new EGLConfig[1];
int[] result = new int[1];
egl.eglChooseConfig(display, attributes, configs, 1, result);
return configs[0];
}

});
mGLView.setEGLConfigChooser(new AAConfigChooser(mGLView));

renderer = new MyRenderer();
mGLView.setRenderer(renderer);

tv.setText("Prueba");
}

@Override
protected void onPause() {
super.onPause();
mGLView.onPause();
}

@Override
protected void onResume() {
super.onResume();
mGLView.onResume();
}

@Override
protected void onStop() {
super.onStop();
}

public void OnClickDerecha(View v) {
tractor_direction_angle += -turn_angle_click;
tractor.rotateY(turn_angle_click);
tractor_direction.set((float)(0.05 * Math.cos(tractor_direction_angle + (float)Math.PI / 2)), 0,
  (float)(0.05 * Math.sin(tractor_direction_angle + (float)Math.PI / 2)));
}

public void OnClickIzquierda(View v) {
tractor_direction_angle += turn_angle_click;
tractor.rotateY(-turn_angle_click);
tractor_direction.set((float)(0.05 * Math.cos(tractor_direction_angle + (float)Math.PI / 2)), 0,
    (float)(0.05 * Math.sin(tractor_direction_angle + (float)Math.PI / 2)));
}

private void copy(Object src) {
try {
Logger.log("Copying data from master Activity!");
Field[] fs = src.getClass().getDeclaredFields();
for (Field f : fs) {
f.setAccessible(true);
f.set(this, f.get(src));
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}

protected boolean isFullscreenOpaque() {
return true;
}

static class RepositionVertexes extends GenericVertexController {

/****************************************
* Move vertexes to it's final position *
****************************************/
private static final long serialVersionUID = 1L;
private SimpleVector v0 = new SimpleVector(), v1 = new SimpleVector(), v2 = new SimpleVector();
public float direction_angle, width;
public boolean right_triangle = false;
public static int i = 0;

@Override
public void apply() {
SimpleVector[] dstMesh=this.getDestinationMesh();


if (!t0.equals(t1) && !t1.equals(t2) && !t2.equals(t0)) {

v0.set(v1);
v1.set(v2);
if (right_triangle) {
v2.set(width / 2, 0, 0);
v2.rotateY(direction_angle);
v2.set(v2.calcAdd(t2));
}
else {
v2.set(-width / 2, 0, 0);
v2.rotateY(direction_angle);
v2.set(v2.calcAdd(t2));
}
dstMesh[i++].set(v0);
dstMesh[i++].set(v1);
dstMesh[i++].set(v2);

right_triangle = !right_triangle;
}
else {
v1.set(t2.x + width / 2, t2.y, t2.z);
v0.set(t2.x - width / 2, t2.y, t2.z);
}
}

}

class MyRenderer implements GLSurfaceView.Renderer {

private Camera cam;

public MyRenderer() {
}

public void onSurfaceChanged(GL10 gl, int w, int h) {
Dibujar();
if (fb != null) {
fb.dispose();
}
fb = new FrameBuffer(w, h);
}


public void onSurfaceCreated(GL10 gl, EGLConfig config) {
Dibujar();
if (fb != null) {
fb.dispose();
}
}


private void Dibujar() {
if (master == null) {

world = new World();
world.setAmbientLight(100, 100, 100);

sun = new Light(world);
sun.setIntensity(1500, 1500, 1500);

Texture tx_worked_area = new Texture(2, 2, new RGBColor(200, 10, 10));
TextureManager.getInstance().addTexture("track", tx_worked_area);
Texture tx_worked_area2 = new Texture(2, 2, new RGBColor(10, 200, 200));
TextureManager.getInstance().addTexture("track2", tx_worked_area2);
Texture tx_floor = new Texture(2, 2, new RGBColor(6, 120, 58));
TextureManager.getInstance().addTexture("floor", tx_floor);

tractor = Object3D.mergeAll(Loader.loadOBJ(getResources().openRawResource(R.raw.tractor_obj),
getResources().openRawResource(R.raw.tractor_mtl), 1.0f));
sprayer = Object3D.mergeAll(Loader.loadOBJ(getResources().openRawResource(R.raw.fumigadora_de_arrastre_obj),
getResources().openRawResource(R.raw.fumigadora_de_arrastre_mtl),1.0f));

floor = Primitives.getPlane(1, 10000);
floor.rotateX((float) (90 * Math.PI / 180));
floor.setTexture("floor");

//Generate a track for testing propose
Log.i("Generating triangles", "Reserving space");
track = new Object3D(1000);
SimpleVector v1 = new SimpleVector(), v2 = new SimpleVector(), v3 = new SimpleVector(), v4 = new SimpleVector();
Log.i("Generating triangles", "Start populating");
for (i = 0; i < 499; i++) {
v1.set(-working_width / 2, 0, -i * 0.001f);
v2.set( working_width / 2, 0, -i * 0.001f);
v3.set( working_width / 2, 0, -i * 0.001f - 0.001f);
v4.set(-working_width / 2, 0, -i * 0.001f - 0.001f);
track.addTriangle(v2, 1, 0, v1, 1, 0, v3, 1, -1, TextureManager.getInstance().getTextureID("track"));
track.addTriangle(v1, 0, 0, v4, 0, -1, v3, 1, -1, TextureManager.getInstance().getTextureID("track"));
if (i % 100 == 0) {
//MemoryHelper.compact();
Log.i("Generating triangles", "n = " + String.valueOf(2 * i));
}
}
Log.i("Generating triangles", "End generation");

//setup track
track.setTransparency((int)(2^12-1));
track.setTransparencyMode(Object3D.TRANSPARENCY_MODE_DEFAULT);
track.strip();
track.build();
track.translate(0, -0.5f, 0);
track.getMesh().setVertexController(RepositionVertexes_, IVertexController.PRESERVE_SOURCE_MESH);
track.compile(true);
RepositionVertexes_.width = working_width;

/*track2 = new Object3D(200000);
track2.setTransparency((int)(2^12-1));
track2.setTransparencyMode(Object3D.TRANSPARENCY_MODE_DEFAULT);
track2.build();
track2.compile(true, true);
world.addObject(track2);*/
tractor.strip();
tractor.build();
tractor.rotateZ((float) (180 * Math.PI / 180));
tractor.translate(0, -tractor.getCenter().y * 2, 0);
sprayer.build();
sprayer.strip();
sprayer.rotateZ((float) (180 * Math.PI / 180));
sprayer.translate(0, -tractor.getCenter().y * 2, 0);
floor.strip();
floor.build();
floor.translate(0,0,0);

world.addObject(tractor);
world.addObject(sprayer);
world.addObject(floor);
world.addObject(track);

cam = world.getCamera();
cam.setPosition(0, 0, 0);
cam.moveCamera(Camera.CAMERA_MOVEOUT, 10);
cam.moveCamera(Camera.CAMERA_MOVEUP, 3);
cam.lookAt(tractor.getTransformedCenter());

SimpleVector sv = new SimpleVector();

sv.x = 4000;
sv.y = -4000;
sv.z = 4000;
sun.setPosition(sv);
t0 = tractor.getTransformedCenter();
t1 = tractor.getTransformedCenter();

MemoryHelper.compact();

if (master == null) {
Logger.log("Saving master Activity!");
master = MainActivity.this;
}
}
}


Matrix rotationmatrix, transformMatrix;
SimpleVector camera_axis = new SimpleVector();
//SimpleVector v0 = new SimpleVector(), v1 = new SimpleVector(), v2 = new SimpleVector();
int i = 0;
boolean right_triangle = false;

public void onDrawFrame(GL10 gl) {
camera_axis.set(0, 0, mGLView.touchTurnUp);

if (mGLView.touchTurn != 0) {
mGLView.touchTurn = 0;
}
if (mGLView.touchTurnUp != 0) {
mGLView.touchTurnUp = 0;
}
tractor.translate(tractor_direction);


t2 = tractor.getTransformedCenter();
RepositionVertexes_.direction_angle = tractor_direction_angle;

track.getMesh().applyVertexController();
track.touch();
t0.set(t1);
t1.set(t2);

cam.setPositionToCenter(tractor);
cam.align(tractor);
cam.moveCamera(Camera.CAMERA_MOVEOUT, 10);
cam.moveCamera(Camera.CAMERA_MOVEUP, -4);

cam.lookAt(tractor.getTransformedCenter());

fb.clear(back);
world.renderScene(fb);
world.draw(fb);
fb.display();
tv.post(new Runnable() {

@Override
public void run() {
tv.setText("x=" + String.valueOf(t0.x) +
"; y=" + String.valueOf(t0.z) +
"; thita=" + String.valueOf(Math.toDegrees(tractor_direction_angle)));
MemoryHelper.printMemory();
}
});
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}

I think I'm misusing the GenericVertexController, but not know how to use it properly.

Can you post a complete code for using GenericVertexController?