house

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

//int rund(double x) { return ((int)(x*10))%10>5?(int)++x:(int)x; }

void axes()
{
    glColor3f (1.0, 0.0, 0.0);

    glBegin(GL_POINTS);

    for(int i=-1000;i<=1000;i++){
        glVertex2d(0,i);
        glVertex2d(i,0);
    }

    glEnd();

    glFlush();
}

void rectangle0(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4)
{
    glColor3f (0.77,0.88,0.94);

    glBegin(GL_POLYGON);

    glVertex2d(x1,y1);
    glVertex2d(x2,y2);
    glVertex2d(x3,y3);
    glVertex2d(x4,y4);

    glEnd();

    glFlush();
}

void rectangle1(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4)
{
    glColor3f (0.91,0.62,0.45);

    glBegin(GL_POLYGON);

    glVertex2d(x1,y1);
    glVertex2d(x2,y2);
    glVertex2d(x3,y3);
    glVertex2d(x4,y4);

    glEnd();

    glFlush();
}

void rectangle2(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4)
{
    glColor3f (0.76,0.53,0.59);

    glBegin(GL_POLYGON);

    glVertex2d(x1,y1);
    glVertex2d(x2,y2);
    glVertex2d(x3,y3);
    glVertex2d(x4,y4);

    glEnd();

    glFlush();
}

void triangle(int x1, int y1, int x2, int y2, int x3, int y3)
{
    glColor3f (0.63, 0.65, 0.69);

    glBegin(GL_TRIANGLES);

    glVertex2d(x1,y1);
    glVertex2d(x2,y2);
    glVertex2d(x3,y3);

    glEnd();

    glFlush();
}


void display(void)
{
    glClear (GL_COLOR_BUFFER_BIT);

    // axes();
    rectangle0(-500,-300,500,-300,500,300,-500,300);
    rectangle1(-125,-300,125,-300,125,150,-125,150);
    rectangle2(-400,-100,-225,-100,-225,100,-400,100);
    rectangle2(225,-100,400,-100,400,100,225,100);
    triangle(-500,300,500,300,0,600);
}

void init (void){

    glClearColor (0.0, 0.0, 0.0, 0.0);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluOrtho2D(-1000,1000,-1000,1000);      //fix the windows size
}

int main(int argc, char** argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
    glutInitWindowSize (1000, 1000);
    glutInitWindowPosition (50, 50);
    glutCreateWindow ("172-15-9804");
    init ();
    glutDisplayFunc(display);
    glutMainLoop();

    return 0;
}