/* 
   Project: coevolutionary GP moto driving
   Dana Vrajitoru
   scenery.cc
   
   Functions to draw the scenery around the motorcycle.  
*/

#include <GL/glut.h>
#include <math.h>
#include <stdlib.h>
#include <iostream.h>

#include "gl_draw.h"
#include "scenery.h"

// Identity of the display list for the scenery part of the
// application.
GLuint scenery_id;

// Creates the display list for the scenery.
void scenery_draw()
{
  scenery_id = glGenLists(1);
  glNewList(scenery_id, GL_COMPILE);

  // Add all of the fix elements of the application here.
  ground();
  road();

  glEndList();
}

// Calls the display list for the scenery.
void scenery_display()
{
  glCallList(scenery_id);
}

// Draws a red square for reference.
void ground()
{
  const GLfloat ground_r = 0.2, ground_g = 1.0, ground_b = 0.2;
  Point3f square_coord[4] = {
    {-10, -0.01, -10}, {-10, -0.01, 10}, 
    {10, -0.01, 10}, {10, -0.01, -10}};
  Point3f normal = {1, 0, 0};

  glColor3f(ground_r, ground_g, ground_b);
  gl_polygon(square_coord, normal, 4);
}

// A very simple road for the motorcycle to be on.
void road()
{
  const GLfloat road_r = 0.3, road_g = 0.3, road_b = 0.3;
  Point3f road_coord[4] = {
    {-10, 0, -2.5}, {-10, 0, 2.5}, 
    {10, 0, 2.5}, {10, 0, -2.5}};
  Point3f normal = {1, 0, 0};

  glColor3f(road_r, road_g, road_b);
  gl_polygon(road_coord, normal, 4);
  
}