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


#define t 640
#define sz 4
#define l 20

void init(void) {
  glClearColor(0.0, 0.8, 0.8, 1.0);
  glOrtho(0, 256, 0, 256, -1, 1);
}

void drawFilledCircle(GLfloat x, GLfloat y, GLfloat radius){
	int i;
	int triangleAmount = 20;

	GLfloat twicePi = 2.0f * 3.1415f;

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

void display(void) {
  glClear(GL_COLOR_BUFFER_BIT);

  glColor3f(1.0,0.0,0.0);

  glBegin(GL_POLYGON);
    glVertex2i(10, 10);
    glVertex2i(10, 100);
    glVertex2i(80, 100);
    glVertex2i(80, 10);
  glEnd();

  glColor3f(0.0,1.0,0.0);

  glBegin(GL_POLYGON);
    glVertex2i(30, 10);
    glVertex2i(30, 60);
    glVertex2i(60, 60);
    glVertex2i(60, 10);
  glEnd();

  glColor3f(0.0,0.0,1.0);

  glBegin(GL_POLYGON);
     glVertex2i(10, 100);
     glVertex2i(45, 160);
     glVertex2i(80, 100);
  glEnd();

  glColor3f(1.0,0.0,1.0);

  glBegin(GL_POLYGON);
     glVertex2i(80, 100);
     glVertex2i(45, 160);
     glVertex2i(170, 160);
     glVertex2i(200, 100);
  glEnd();

  glColor3f(0.0,1.0,1.0);

  glBegin(GL_POLYGON);
     glVertex2i(80, 10);
     glVertex2i(200, 10);
     glVertex2i(200, 100);
     glVertex2i(80, 100);
  glEnd();

  glColor3f(0.0,0.0,0.0);

  glBegin(GL_POLYGON);
     glVertex2i(120, 40);
     glVertex2i(120, 80);
     glVertex2i(170, 80);
     glVertex2i(170, 40);
  glEnd();

  glColor3f(1.0,1.0,0.0);

  drawFilledCircle(200.0, 200.0, 25.0);

  glutSwapBuffers();
}
int main(int argc, char** argv){
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);
    glutInitWindowSize(t, t);
    glutInitWindowPosition(100,100);
    glutCreateWindow("House");
    init();
    glutDisplayFunc(display);
    glutMainLoop();
    return 0;
}