import processing.opengl.*;

import java.awt.event.*;

PMatrix3D currCameraMatrix;

PGraphics3D g3; 

PImage grid_image;

int app_height = 700, app_width = 1200;

void setup()

{

  size(app_width,app_height,OPENGL);

  smooth(); 

  strokeWeight(1);

  grid_image = loadImage("grid_5.jpg"); 

  g3 = (PGraphics3D)g;  

  addMouseWheelListener(new MouseWheelListener() {public void mouseWheelMoved(MouseWheelEvent mwe){mouseWheel(mwe.getWheelRotation());}}); 

}

void draw()

{

  background(20); 

  

  grid();

  camera_movement();    

}