OpenGl_something

#include<GL/gl.h>
#include<GL/glu.h>
#include<GL/glut.h>
#include<iostream>
#include<vector>
#include<math.h>
#include<stdio.h>
using namespace std;
float forward = 0.005;
float current[3] ={0,0,0};
float a = drand48();
float b = drand48();
float c = drand48();
float center_x =0 , center_y =0 , center_z =0;

class Triangle
{
public:
  //float position[9],color[3];
  Triangle()
  {}
  Triangle(float position[], float color[])
  {
    glPushMatrix();
    // float a = 0.03;
    //float b = 0.04;
    //float c = 0.05;
    float increment = 0.001;
    glTranslatef(a+increment,b+increment,c+increment);
    //    glRotatef()
    glBegin(GL_TRIANGLES);
    glColor3f(color[0],color[1],color[2]);glVertex3f(position[0],position[1],position[2]);
    glColor3f(color[0],color[1],color[2]);glVertex3f(position[3],position[4],position[5]);
    glColor3f(color[0],color[1],color[2]);glVertex3f(position[6],position[7],position[8]);
    glEnd();
    glPopMatrix();

  }

};

class Mesh
{
public:
  /*float center[3],position[9],color[3];
    float size;*/
  vector<Triangle> elements;
  float center[3],position[9],color[3];
  float size;

  Mesh(){}
  Mesh(float center_in[3], float color_in[3])
  {
    for (int i=0;i<3;i++)
      {
    color[i] = color_in[i];
    center[i] = center_in[i];
      }
  }

  vector<Triangle> makeCube()
  {
    vector<Triangle> elements_cube;
    float d =0.03;
    // First face
    position[0] = d;position[1] = d; position[2] = d;
    position[3] = -d;position[4] = -d; position[5] = d;
    position[6] = d;position[7] = -d; position[8] = d;
    color[0]=1; color[1] = 0; color[2]=0;
    Triangle T1(position, color);
    elements_cube[0] = T1;
    position[0] = -d;position[1] = -d; position[2] = d;
    position[3] = d;position[4] = d; position[5] = d;
    position[6] = -d;position[7] = d; position[8] = d;
    color[0]=1; color[1] = 0; color[2]=0;
    Triangle T1_1(position, color);
    elements_cube[1] = T1_1;

    //Second Face
    position[0] = d;position[1] = d; position[2] = d;
    position[3] = d;position[4] = -d; position[5] = d;
    position[6] = d;position[7] = -d; position[8] = -d;
    color[0]=1; color[1] = 1; color[2]=0;
    Triangle T2(position, color);
    elements_cube[2] = T2;
    position[0] = d;position[1] = d; position[2] = d;
    position[3] = d;position[4] = -d; position[5] = -d;
    position[6] = d;position[7] = d; position[8] = -d;
    color[0]=1; color[1] = 1; color[2]=0;
    Triangle T2_2(position, color);
    elements_cube[3] = T2_2;

    //Third face
    position[0] = d;position[1] = d; position[2] = -d;
    position[3] = -d;position[4] = -d; position[5] = d;
    position[6] = -d;position[7] = d; position[8] = d;
    color[0]=0; color[1] = 1; color[2]=1;
    Triangle T3(position, color);
    elements_cube[2] = T3;
    position[0] = -d;position[1] = -d; position[2] = d;
    position[3] = d;position[4] = -d; position[5] = -d;
    position[6] = d;position[7] = d; position[8] = -d;
    color[0]=0; color[1] = 1; color[2]=1;
    Triangle T3_2(position, color);
    elements_cube[3] = T3_2;

    return(elements_cube);

  }

  void getColor()
  {
    color[0] = 1.; color[1]=0.; color[2]=0.;
  }

  static Mesh makeMesh()
  {
    Mesh a;
    a.elements.resize(4);
    a.elements=a.makeCube();
    return a;
  }

};

void render()
{
  glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
  glPushMatrix();
  glBegin(GL_TRIANGLES);
  glColor3f(1,1,1);glVertex3f(-0.3,-0.3,-1);
  glColor3f(1,1,1);glVertex3f(-1,-0.3,0);
  glColor3f(1,1,1);glVertex3f(1,-0.3,0);
  glEnd();
  glBegin(GL_TRIANGLES);
  glColor3f(1,0,1);glVertex3f(-0.3,-0.3,1);
  glColor3f(1,1,1);glVertex3f(-1,-0.3,0);
  glColor3f(1,0,0);glVertex3f(1,-0.3,0);
  glEnd();
  glPopMatrix();
  Mesh a;
  //a.elements.resize(2);
  //a.getPositions();
  //a.getColor();
  //Triangle T(a.position,a.color);
  vector<Mesh> m;
  for (int i=1;i<10;i++)
    {glPushMatrix();
      glTranslatef(0.1,.1,(float)i/10);
      m.push_back(Mesh::makeMesh());
      glPopMatrix();
    }
  glPushMatrix();
  //glLoadIdentity();
  //glTranslatef(current[0], current[1], current[2]);
  m;
  glPopMatrix();
  glFlush();
  glutSwapBuffers();
  glutPostRedisplay();
}

void keyboard(unsigned char c, int x,int y)
{
  if(c==27)
    {exit(0);}
  if (c=='w')
    {
      float forward_x, forward_y,forward_z;
      gluLookAt(current[0], current[1], current[2],
        current[0]+center_x, current[1]+center_y, current[2]+center_z,
        0.0, 1.0, 0.0);
      // glScalef(1.2,1.2,1.2);
      current[0]= (current[0]- 0.1*center_x);
      current[1]= (current[1]-0.1*center_y);
      current[2]= (current[2]- 0.1*center_z);

    }
   if (c=='s')
    {
      glMatrixMode(GL_MODELVIEW);
      glLoadIdentity();

      float forward_x, forward_y,forward_z;
      gluLookAt(current[0], current[1], current[2],
        current[0]+center_x, current[1]+center_y, current[2]+center_z,
        0.0, 1.0, 0.0);
      //glScalef(1.2,1.2,1.2);
      current[0]= (current[0]+ 0.1*center_x);
      current[1]= (current[1]+ 0.1*center_y);
      current[2]= (current[2]+ 0.1*center_z);

    }

}

void mouse(int button, int state,int x,int y)
{
  if(button == GLUT_RIGHT_BUTTON){exit(0);}
}

void Camera_rotation(int x, int y)
{
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
  center_x = cos(-0.05*x)*sin(-.05*y);
  center_y = cos(-.05*y);
  center_z = sin(0.05*x)*sin(.05*y);
  //  eye_x = x; eye_y = 1.0,
  // float new_x = x;
  gluLookAt(current[0], current[1], current[2],
            current[0]+center_x,
        current[1]+center_y,
            current[2]+center_z,
            0.0, 1.0, 0.0);
  /*current[0] = center_x;
  current[1] = center_y;
  current[2] = center_z;*/
  render();
}

int main(int argc, char**argv)
{
  glutInit(&argc,argv);
  glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
  glutInitWindowPosition(100,100);
  glutInitWindowSize(1000,1000);
  glutCreateWindow("Window screen");
  glEnable(GL_DEPTH_TEST);
  glutDisplayFunc(render);
  glutKeyboardFunc(keyboard);
  glutMouseFunc(mouse);
  glutPassiveMotionFunc(Camera_rotation);
  glutMainLoop();
}