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/*
 * File:   main.cpp
 * Author: Admin
 *
 * Created on March 20, 2012, 3:31 PM
 */

#include <cstdlib>
#include <GL/freeglut.h>
#include "ModelView.h"

void resize(int width, int height);
void display(void);
void special(int key, int x, int y);
void key(unsigned char key, int x, int y);
void idle();
void init(int argc, char** argv);
void mouseWheel(int button, int direction, int x, int y);
void mouse(int button, int direction, int x, int y);

//testing
#define RADIUS    1.0f
void drawTestObject();

const GLfloat light_ambient[] = {0.0f, 0.0f, 0.0f, 1.0f};
const GLfloat light_diffuse[] = {1.0f, 1.0f, 1.0f, 1.0f};
const GLfloat light_specular[] = {1.0f, 1.0f, 1.0f, 1.0f};
const GLfloat light_position[] = {2.0f, 5.0f, 5.0f, 0.0f};

const GLfloat mat_ambient[] = {0.7f, 0.7f, 0.7f, 1.0f};
const GLfloat mat_diffuse[] = {0.8f, 0.8f, 0.8f, 1.0f};
const GLfloat mat_specular[] = {1.0f, 1.0f, 1.0f, 1.0f};
const GLfloat high_shininess[] = {100.0f};

int main(int argc, char** argv)
{
    // inits
    init(argc, argv);
    glutMainLoop();

    return 0;
}

void init(int argc, char** argv)
{
    glutInitWindowSize(640, 480);
    glutInitWindowPosition(40, 40);
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH | GLUT_MULTISAMPLE);

    // window
    glutCreateWindow("TestEngine");
    glutReshapeFunc(resize);
    glutDisplayFunc(display);
    glutSpecialFunc(special);
    glutIdleFunc(idle);
    glutMouseWheelFunc(mouseWheel);
    glutMouseFunc(mouse);

    glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_CONTINUE_EXECUTION);
    glClearColor(1, 1, 1, 1);
    glEnable(GL_CULL_FACE);
    glCullFace(GL_BACK);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);

    glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);
}

void idle()
{
    glutPostRedisplay();
}

void resize(int width, int height)
{
    const float ar = (float)width / (float)height;

    glViewport(0, 0, width, height);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}

void display(void)
{
    const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
    const double a = t * 90.0;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glEnable(GL_LIGHTING);

    glColor3d(0, 1, 0);
    glPushMatrix();

    glTranslated(0, 1.2, -6);
    glRotated(60, 1, 0, 0);
    glRotated(a, 0, 0, 1);
    drawTestObject();

    glPopMatrix();

    glDisable(GL_LIGHTING);
    glColor3d(0.1, 0.1, 0.4);
}

void drawTestObject()
{
   glBegin( GL_LINE_LOOP );
    glNormal3d( 1.0, 0.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0,-RADIUS );
  glEnd();
  glBegin( GL_LINE_LOOP );
    glNormal3d(-1.0, 0.0, 0.0 ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0, RADIUS );
  glEnd();
  glBegin( GL_LINE_LOOP );
    glNormal3d( 0.0, 1.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS,-RADIUS ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS, RADIUS );
  glEnd();
  glBegin( GL_LINE_LOOP );
    glNormal3d( 0.0,-1.0, 0.0 ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS, RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS,-RADIUS );
  glEnd();
  glBegin( GL_LINE_LOOP );
    glNormal3d( 0.0, 0.0, 1.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, RADIUS ); glVertex3d(-RADIUS, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, RADIUS );
  glEnd();
  glBegin( GL_LINE_LOOP );
    glNormal3d( 0.0, 0.0,-1.0 ); glVertex3d( RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS,-RADIUS ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS,-RADIUS );
  glEnd();
}

// keyboard functions

void special(int key, int x, int y)
{
    switch (key)
    {
        case GLUT_KEY_UP:
            break;
        case GLUT_KEY_DOWN:
            break;
        case GLUT_KEY_LEFT:
            break;
        case GLUT_KEY_RIGHT:
            break;
        default:
            break;
    }
}

void key(unsigned char key, int x, int y)
{
    switch (key)
    {
        case 'W':
        case 'w':
            break;

        case 'A':
        case 'a':
            break;

        case 'S':
        case 's':
            break;

        case 'D':
        case 'd':
            break;

        default:
            break;
    }
}

void mouseWheel(int button, int direction, int x, int y)
{

}

void mouse(int button, int direction, int x, int y)
{

}