Anumation Problem

Hello everyone

Im trying to create a simple animation on the image target sample, so I added

float x = 0.0f;
float y = 0.0f;
bool moveRight = true;

under the

static float kObjectScale = 3.0f;

I then

in the "JNIEXPORT void JNICALLJava_com_qualcomm_QCARSamples_ImageTargets_ImageTargetsRenderer_renderFrame(JNIEnv *, jobject)" function (which i assume draws the scean)

i added

        if (moveRight == true) {
          x += 1.0f;
            if (x > 50.0f)
                moveRight = false;
         }
         else {
          x -= 1.0f;
            if (x < -50.0f)
                moveRight = true;
         }

then changed

glTranslatef(0.0f, 0.0f, kObjectScale);

to

glTranslatef(x, y, kObjectScale);

and changed

SampleUtils::translatePoseMatrix(0.0f, 0.0f, kObjectScale,
                                         &modelViewMatrix.data[0]);

to

SampleUtils::translatePoseMatrix(x, y, kObjectScale,
                                         &modelViewMatrix.data[0]);

but nothing happens even if i just put

x = 50.0f

in renderFrame, the only time I get a result is when I change the value where the variable is created (ie float x = 30.0f)

please help

I tried to make this as clear as possible to make it easier to understand my problem.

Thanks In Advance :)