title: 3d collision detection help openGL
body: <p>I have a carrier object and a plane that is controllable by keyboard input, i want to be able to detect a collision between the 2 so i can land on the carrier. This is my code:</p>
  
  <pre><code>//Camera
          gluLookAt(45,30,-50,eyeX,eyeY-5,eyeZ,0,1,0);
  
          //Skybox
          glPushMatrix(); 
              glEnable(GL_TEXTURE_2D);
                  drawSea();
              glDisable(GL_TEXTURE_2D);
              drawCube();
              //Carrier
              glPushMatrix(); 
                  //glTranslatef(-22,12,0);
                  glTranslatef(-carrierX,12,-carrierZ-190);
                  glEnable(GL_TEXTURE_2D);
                      model2.speedDisplayFaceNormals();
                  glDisable(GL_TEXTURE_2D);
              glPopMatrix();
          glPopMatrix();
  
          //Aircraft
          glPushMatrix(); 
              glTranslatef(eyeX,eyeY-5,eyeZ);
              glRotatef(-heading, 0,1,0);
              glRotatef(-elevation, 1,0,0);
              glEnable(GL_TEXTURE_2D);
                  model.speedDisplayFaceNormals();
              glDisable(GL_TEXTURE_2D);
              //Bounding box
              glBegin(GL_QUADS);
                  glVertex3f(-6, -2, -6);
                  glVertex3f(6, -2, -6);
                  glVertex3f(6, -2, 6);
                  glVertex3f(-6, -2, 6);
              glEnd();
          glPopMatrix();
  </code></pre>
  
  <p>My initial ideas are to have a plane at the bottom of the aircraft, and one on top of the carrier, and then detecting when they collide should be easy. You can see i have added a plane to the bottom of the aircraft, however, as the position of the aircraft moves, the plane will move too, how do i get the current co-ordinates of the plane as it is being moved?
  Or is there a different way i should go about this? I have a good understanding of how to execute the detection once i can get the co ordinates as the objects are moving</p>