#include <GL/gl.h>
#include <GL/glut.h>
#include <math.h>

#define PI 3.14

void drawFilledCircle(GLfloat x, GLfloat y, GLfloat radius)
 {
     int i;
     int triangleAmount = 50;
     GLfloat twicePi = 2.0f * PI;


     glBegin(GL_TRIANGLE_FAN);
        glVertex2f(x, y);
        for(i = 0; i <= triangleAmount; i++) {
                glVertex2f(x + (radius * cos(i * twicePi / triangleAmount)), y + (radius * sin(i * twicePi/ triangleAmount)));
        }
     glEnd();

 }

void display(void)
{
/*  clear all pixels  */
    glClear (GL_COLOR_BUFFER_BIT);

/*  draw white polygon (rectangle) with corners at
 *  (0.25, 0.25, 0.0) and (0.75, 0.75, 0.0)
 */



    glColor3f (0.2, 0.3, 0.4); // car base 1
    glBegin(GL_POLYGON);
        glVertex3f (-25.0+25, -5.0, 0.0); // bottom left, + -height 15
        glVertex3f (25.0+25, -5.0, 0.0); // bottom right,
        glVertex3f (25.0+25, 15.0, 0.0); // top right,
        glVertex3f (-25.0+25, 15.0, 0.0); // top left,
    glEnd();

    glColor3f (0.2, 0.0, 0.0); // car wheel  area 1
    glBegin(GL_POLYGON);
        glVertex3f (-15.0+25, -5.0, 0.0); // bottom left, + -height 15
        glVertex3f (15.0+25, -5.0, 0.0); // bottom right,
        glVertex3f (10.0+25, 15.0-10, 0.0); // top right,
        glVertex3f (-10.0+25, 15.0-10, 0.0); // top left,
    glEnd();

    // car wheel 1
      glColor3f(0.2, 0.3, 0.3);
    drawFilledCircle(0.0+25, 0.0-5, 8);

/*
    glColor3f (0.2, 0.3, 0.3); // car wheel 1
    glBegin(GL_POLYGON);
        glVertex3f (-0.0+25, -5.0, 0.0); // bottom left, + -height 15
        glVertex3f (0.0+25, -5.0, 0.0); // bottom right,
        glVertex3f (3.0+25, 15.0-10, 0.0); // top right,
        glVertex3f (-3.0+25, 15.0-10, 0.0); // top left,
    glEnd();*/


    glColor3f (0.2, 0.3, 0.4); // car base 2
    glBegin(GL_POLYGON);
        glVertex3f (-25.0-25, -5.0, 0.0); // height 15
        glVertex3f (25.0-25, -5.0, 0.0);
        glVertex3f (25.0-25, 15.0, 0.0);
        glVertex3f (-25.0-25, 15.0, 0.0);
    glEnd();

    glColor3f (0.2, 0.0, 0.0); // // car wheel  area 2
    glBegin(GL_POLYGON);
        glVertex3f (-15.0-25, -5.0, 0.0); // bottom left, + -height 15
        glVertex3f (15.0-25, -5.0, 0.0);// bottom right,
        glVertex3f (10.0-25, 15.0-10, 0.0);// top right,
        glVertex3f (-10.0-25, 15.0-10, 0.0); // top left,
    glEnd();

    // car wheel 2
      glColor3f(0.2, 0.3, 0.3);
    drawFilledCircle(0.0-25, 0.0-5, 8);


    glColor3f (0.2, 0.3, 0.4); // car base level 1
    glBegin(GL_POLYGON);
        glVertex3f (-5.0-25, -15.0+30, 0.0); // bottom left, + -height 15
        glVertex3f (25.0-25, -15.0+30, 0.0); // bottom right,
        glVertex3f (25.0-25, 5.0+30, 0.0); // top right,
        glVertex3f (10.0-25, 5.0+30, 0.0); // top left,
    glEnd();

    glColor3f (0.5, 0.6, 0.6); // car glass level 1
    glBegin(GL_POLYGON);
        glVertex3f (1.5-25, -13.0+30, 0.0); // bottom left, + -height 15
        glVertex3f (23.0-25, -13.0+30, 0.0); // bottom right,
        glVertex3f (23.0-25, 1.0+30, 0.0); // top right,
        glVertex3f (11.0-25, 1.0+30, 0.0); // top left,
    glEnd();

    glColor3f (0.2, 0.3, 0.4); // car base level 2
    glBegin(GL_POLYGON);
        glVertex3f (-25.0+25, -15.0+30, 0.0); // bottom left, + -height 15
        glVertex3f (25.0+25, -15.0+30, 0.0); // bottom right,
        glVertex3f (15.0+25, 5.0+30, 0.0); // top right,
        glVertex3f (-25.0+25, 5.0+30, 0.0); // top left,
    glEnd();

    glColor3f (0.5, 0.6, 0.6); // car glass level 1
    glBegin(GL_POLYGON);
        glVertex3f (-24.0+25, -13.0+30, 0.0); // bottom left, + -height 15
        glVertex3f (20.0+25, -13.0+30, 0.0); // bottom right,
        glVertex3f (13.0+25, 1.0+30, 0.0); // top right,
        glVertex3f (-24.0+25, 1.0+30, 0.0); // top left,
    glEnd();


/*

/*
    glColor3f (0.6, 0.6, 0.6); // home_roof
    glBegin(GL_TRIANGLES);
        glVertex3f (-35.0, 25.0, 0.0); //lower left corner of the triangle
        glVertex3f (35.0, 25.0, 0.0);  // lower right corner of the triangle
        glVertex3f (0.0, 50.0, 0.0);  // top of the triangle
    glEnd();

    glColor3f (0.5, 0.6, 0.6);
    glBegin(GL_POLYGON);
        glVertex3f (-20.0, -25.0, 0.0); //lower left corner of the door
        glVertex3f (-5.0, -25.0, 0.0);  //lower right corner of the door
        glVertex3f (-5.0, 5.0, 0.0);  //upper right corner
        glVertex3f (-20.0, 5.0, 0.0);  //upper left corner
    glEnd();

    glColor3f (0.5, 0.6, 0.6);
    glBegin(GL_POLYGON);
        glVertex3f (20.0, -10.0, 0.0); //lower left corner of the door
        glVertex3f (2.0, -10.0, 0.0);  //lower right corner of the door
        glVertex3f (2.0, 5.0, 0.0);  //upper right corner
        glVertex3f (20.0, 5.0, 0.0);  //upper left corner
    glEnd();

    */


/*  don't wait!
 *  start processing buffered OpenGL routines
 */
    glFlush ();
}

void init (void)
{
/*  select clearing (background) color       */
    glClearColor (1.0, 1.0, 1.0, 0.0);


/*  initialize viewing values  */
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(-100, 100, -100, 100, -1.0, 1.0);
}

/*
 *  Declare initial window size, position, and display mode
 *  (single buffer and RGBA).  Open window with "hello"
 *  in its title bar.  Call initialization routines.
 *  Register callback function to display graphics.
 *  Enter main loop and process events.
 */
int main(int argc, char** argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
    glutInitWindowSize (700, 700);
    glutInitWindowPosition (100, 100);
    glutCreateWindow ("ID: 171410013; Md. Abu Bakkar Siddique");
    init ();
    glutDisplayFunc(display);
    glutMainLoop();
    return 0;   /* ISO C requires main to return int. */
}