South_Koria_Flag Using Opengl

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

void init2D(float r, float g, float b)
{
	glClearColor(r,g,b,0.0);
	glMatrixMode (GL_PROJECTION);
	gluOrtho2D (-500, 500.0, -500, 500.0);
}

void display(void)
{
	glClear(GL_COLOR_BUFFER_BIT);
    glColor3f(1,0,0);
    glBegin(GL_POLYGON);


    float theta;
    for(int i=0; i<182; i++)
    {
        theta = i*3.1416/180;
        glVertex2f(0+150*cos(theta),0+150*sin(theta));
    }
    glEnd();


    glColor3f(0,0,1);
    glBegin(GL_POLYGON);


    float p;
    for(int i=0; i<190; i++)
    {
        p = i*3.1416/180;
        glVertex2f(75+75*cos(p),0+75*sin(p));
    }
    glEnd();


    glColor3f(0,0,1);
    glBegin(GL_POLYGON);


    float t;
    for(int i=183; i<362; i++)
    {
        t = i*3.1416/180;
        glVertex2f(0+150*cos(t),0+150*sin(t));
    }
    glEnd();


    glColor3f(1,0,0);
    glBegin(GL_POLYGON);


    float k;
    for(int i=180; i<360; i++)
    {
        k = i*3.1416/180;
        glVertex2f(-75+75*cos(k),0+75*sin(k));
    }
    glEnd();



    //second co-ordinate
    glBegin(GL_POLYGON);
        glColor3f(0,0,0);
        //glEnable(GL_);
        glPointSize(50);
		glVertex2i(-400,245);
		glVertex2i(-250,395);
		glVertex2i(-210,342);
		glVertex2i(-354,200);

		//glVertex2i(0,10);
		//glVertex2i(6,0);

	glEnd();


    glBegin(GL_QUADS);
        glColor3f(0,0,0);
        //glEnable(GL_);
        //glPointSize(50);
		glVertex2i(-325,165);
		glVertex2i(-180,310);
		glVertex2i(-145,260);
		glVertex2i(-285,125);

		//glVertex2i(0,10);
		//glVertex2i(6,0);

	glEnd();


	glBegin(GL_QUADS);
        glColor3f(0,0,0);
        //glEnable(GL_);
        glPointSize(50);
		glVertex2i(-250,85);
		glVertex2i(-120,220);
		glVertex2i(-85,175);
		glVertex2i(-210,45);

		//glVertex2i(0,10);
		//glVertex2i(6,0);

	glEnd();

        //first co-ordinate
        glBegin(GL_POLYGON);
        glColor3f(0,0,0);

        glPointSize(50);
		glVertex2i(400,250);
		glVertex2i(350,200);
		glVertex2i(300,250);
		glVertex2i(350,300);


    glEnd();
        glBegin(GL_POLYGON);
        glColor3f(0,0,0);
        glVertex2i(310,340);
        glVertex2i(250,395);
        glVertex2i(210,345);
        glVertex2i(265,295);

	glEnd();


    glBegin(GL_QUADS);
        glColor3f(0,0,0);

		glVertex2i(325,165);
		glVertex2i(180,310);
		glVertex2i(145,260);
		glVertex2i(285,125);



	glEnd();



	glBegin(GL_POLYGON);
        glColor3f(0,0,0);

        glPointSize(50);
		glVertex2i(250,90);//first
		glVertex2i(200,140);
		glVertex2i(165,100);
		glVertex2i(215,50);//last


		glEnd();


		glBegin(GL_POLYGON);
        glColor3f(0,0,0);
        glVertex2i(170,175);//first
        glVertex2i(120,225);//second
        glVertex2i(85,180);//third
        glVertex2i(135,135);//last


	glEnd();

        //third co-ordinate
        glBegin(GL_QUADS);
        glColor3f(0,0,0);

        glPointSize(50);
		glVertex2i(-400,-245);
		glVertex2i(-250,-395);
		glVertex2i(-210,-342);
		glVertex2i(-354,-200);



	glEnd();

        glBegin(GL_POLYGON);
        glColor3f(0,0,0);
		glVertex2i(-325,-165);
		glVertex2i(-270,-220);
		glVertex2i(-230,-180);
		glVertex2i(-285,-125);

		glEnd();


		glBegin(GL_POLYGON);
        glColor3f(0,0,0);

        glVertex2i(-230,-255);
        glVertex2i(-180,-310);
        glVertex2i(-140,-265);
        glVertex2i(-190,-215);


	glEnd();


	glBegin(GL_QUADS);
        glColor3f(0,0,0);

        glPointSize(50);
		glVertex2i(-250,-85);
		glVertex2i(-120,-220);
		glVertex2i(-85,-175);
		glVertex2i(-210,-45);



	glEnd();


	//forth co-ordinate
	glBegin(GL_POLYGON);
        glColor3f(0,0,0);
        //glEnable(GL_);
        glPointSize(50);
		glVertex2i(400,-250);
		glVertex2i(350,-200);
		glVertex2i(300,-250);
		glVertex2i(350,-300);


    glEnd();
        glBegin(GL_POLYGON);
        glColor3f(0,0,0);
        glVertex2i(310,-340);
        glVertex2i(250,-395);
        glVertex2i(210,-345);
        glVertex2i(265,-295);

	glEnd();


    glBegin(GL_POLYGON);
        glColor3f(0,0,0);
		glVertex2i(325,-165);
		glVertex2i(270,-220);
		glVertex2i(230,-180);
		glVertex2i(285,-125);

		glEnd();


		glBegin(GL_POLYGON);
        glColor3f(0,0,0);

        glVertex2i(230,-255);
        glVertex2i(180,-310);
        glVertex2i(140,-265);
        glVertex2i(190,-215);




	glEnd();


	glBegin(GL_POLYGON);
        glColor3f(0,0,0);

        glPointSize(50);
		glVertex2i(250,-90);//first
		glVertex2i(200,-140);
		glVertex2i(165,-100);
		glVertex2i(215,-50);//last


		glEnd();


		glBegin(GL_POLYGON);
        glColor3f(0,0,0);
        glVertex2i(170,-175);//first
        glVertex2i(120,-225);//second
        glVertex2i(85,-180);//third
        glVertex2i(135,-135);//last


	glEnd();


    glFlush();

}

int main(int argc,char *argv[])
{
	glutInit(&argc,argv);
	glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
	glutInitWindowSize (500, 500);
	glutInitWindowPosition (500, 100);
	glutCreateWindow ("points and lines");
	init2D(1,1,1);
	glutDisplayFunc(display);
	glutMainLoop();
	return 0;
}