draw multiple spheres with for loop

OpenGL OpenGL: Basic Coding
1

I can’t seem to understand how multiple copies of same object are being drawn using array of objects. Below you see my draw() method:

void draw(GLfloat x, GLfloat y, GLfloat z)
    {
        glMatrixMode(GL_MODELVIEW);
        glPushMatrix();
        glTranslatef(x,y,z);

        glEnableClientState(GL_VERTEX_ARRAY);
        glEnableClientState(GL_NORMAL_ARRAY);
        glEnableClientState(GL_TEXTURE_COORD_ARRAY);

        glVertexPointer(3, GL_FLOAT, 0, &vertices[0]);
        glNormalPointer(GL_FLOAT, 0, &normals[0]);
        glTexCoordPointer(2, GL_FLOAT, 0, &texcoords[0]);
	glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_SHORT, &indices[0]);
        glPopMatrix();

	glDisableClientState(GL_VERTEX_ARRAY);
	glDisableClientState(GL_NORMAL_ARRAY);
	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    }

Inside display() I call draw() 4 times using the for loop so that I get 4 spheres on screen as a result, but instead it only draws 1 sphere. What’s wrong?

void display()
{
	SolidSphere **spheres = createSpheres();
	float const win_aspect = (float)win_width / (float)win_height;

	glViewport(0, 0, win_width, win_height);

	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glColor3f(.6, 0, 0);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluPerspective(45, win_aspect, 1, 10);

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	
	for (int i = 0; i < 4; i++)
	{
		spheres[i]->draw(posX,posY,posZ);
	}
	for (int i = 0; i < 4; i++)
	{
		delete spheres[i];
	}

	delete[] spheres;

	glutSwapBuffers();
}

Can you please suggest how to improve this so that I get 4 spheres instead of 1?

2

You’re passing in the same value for posX, posY & posZ each time you draw the sphere, so will be drawing on the same spot 4 times.

3

I use random float generator for posX, posY and posZ, so it’s actually different value with every call. Sorry for not mentioning this in the first post.

4

Found the problem.:o