#include <GL/glut.h>
//#include <stdlib.h>  //comment this out for .net
#include <stdio.h>
#include <math.h>
#define PI 3.14

void reshape (int w, int h)
{
   glViewport (0, 0, (GLsizei) w, (GLsizei) h);
   glMatrixMode (GL_PROJECTION);
   glLoadIdentity ();
   glOrtho (0.0, (GLdouble) w, 0.0, (GLdouble) h, -500.0, 500.0);
 

   glMatrixMode (GL_MODELVIEW);
}

/* input event - keyboard */
void keyboard(unsigned char key, int x, int y)
{
   switch (key) {
      case 27:
         exit(0);
         break;
   }
}


void myinit(void)
{
 
/* attributes */

	glClearColor(0.0, 0.3, 0.50, 0.0); /* blue background */
	glDepthFunc(GL_LEQUAL);
	glEnable(GL_DEPTH_TEST);  	   
 

/* set up viewing */
/* 500 x 500 x 500 window with origin lower left */

	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glOrtho(0.0, 500.0, 0.0, 500.0, -500.0, 000.0);

	glMatrixMode(GL_MODELVIEW);
}

void display( void )
{
	GLubyte stripe[] = {
		0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0xff, 0xff,
		0x80, 0x00, 0x7f, 0xff, 0x08, 0x00, 0x7f, 0xff,
		0xc0, 0x00, 0x3f, 0xff, 0xc0, 0x00, 0x3f, 0xff,
		0xe0, 0x00, 0x1f, 0xff, 0xe0, 0x00, 0x1f, 0xff,
		0xf0, 0x00, 0x0f, 0xff, 0xf0, 0x00, 0x0f, 0xff,
		0xf8, 0x00, 0x07, 0xff, 0xf8, 0x00, 0x07, 0xff,
		0xfc, 0x00, 0x03, 0xff, 0xfc, 0x00, 0x03, 0xff,
		0xfe, 0x00, 0x01, 0xff, 0xfe, 0x00, 0x01, 0xff,
		0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0xff,
		0xff, 0x80, 0x00, 0x7f, 0xff, 0x80, 0x00, 0x7f,
		0xff, 0xc0, 0x00, 0x3f, 0xff, 0xc0, 0x00, 0x3f,
		0xff, 0xe0, 0x00, 0x1f, 0xfe, 0xe0, 0x00, 0x1f,
		0xff, 0xf0, 0x00, 0x0f, 0xff, 0xf0, 0x00, 0x0f,
		0xff, 0xf8, 0x00, 0x07, 0xff, 0xf8, 0x00, 0x07,
		0xff, 0xfc, 0x00, 0x03, 0xff, 0xfc, 0x00, 0x03,
		0xff, 0xfe, 0x00, 0x01, 0xff, 0xfe, 0x00, 0x01};
		
	glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);  /*clear the window */
	glColor3f(0.0, 1.0, 0.0);
	
	glBegin(GL_TRIANGLE_STRIP);   /* hull */
	glVertex3f(100.0,150.0,250.0);  
	glVertex3f(150.0,150.0,350.0);  
	glVertex3f(150.0,100.0,250.0);  
	glVertex3f(350.0,150.0,350.0);
	glVertex3f(350.0,100.0,250.0);
	glVertex3f(400.0,150.0,250.0);
	glEnd();

    glBegin(GL_TRIANGLE_STRIP);   /* hull */
	glVertex3f(400.0,150.0,250.0);  
	glVertex3f(350.0,150.0,150.0);  
	glVertex3f(350.0,100.0,250.0);  
	glVertex3f(150.0,150.0,150.0);
	glVertex3f(150.0,100.0,250.0);
	glVertex3f(100.0,150.0,250.0);
	glEnd();

	glColor3f(.8, .8, .8); /* mast */
	glBegin(GL_QUAD_STRIP);
	glVertex3f(175.0,125.0, 260.0);
	glVertex3f(175.0,450.0, 260.0);  
	glVertex3f(190.0,125.0, 260.0);    
	glVertex3f(190.0,450.0, 260.0);  
	glVertex3f(190.0,125.0, 240.0);    
	glVertex3f(190.0,450.0, 240.0);
	glVertex3f(175.0,125.0, 240.0);
	glVertex3f(175.0,450.0, 240.0);
	glVertex3f(175.0,125.0, 260.0);
	glVertex3f(175.0,450.0, 260.0);  
	glEnd();
	
	glColor3f(1.0, 1.0, 1.0); /* sail*/
	glBegin(GL_TRIANGLE_FAN);
	glVertex3f(100.0,200.0, 280.0);
	glVertex3f(210.0,470.0, 300.0);  
	glVertex3f(270.0,350.0, 400.0);
	glVertex3f(300.0,275.0, 430.0);
	glVertex3f(360.0,200.0, 450.0);  
	glEnd();

	glEnable(GL_POLYGON_STIPPLE);
	glPolygonStipple(stripe);
	glColor3f(0.5, .5, 0.8); /* sail*/
	glBegin(GL_TRIANGLE_FAN);
	glVertex3f(100.0, 200.0, 280.0);
	glVertex3f(210.0, 470.0, 300.0);  
	glVertex3f(270.0, 350.0, 400.0);
	glVertex3f(300.0, 275.0, 430.0);
	glVertex3f(360.0, 200.0, 450.0);  
	glEnd();
    glDisable(GL_POLYGON_STIPPLE);
    
	glColor3f(1.0, 1.0, 0.0); /* rudder */
	glBegin(GL_QUADS);
	glVertex3i(325,165,250);  
	glVertex3i(425,165,250);  
	glVertex3i(425,155,250);  
	glVertex3i(325,155,250);  
	glEnd();

	glBegin(GL_POLYGON);
	glVertex3i(425,165,250);
	glVertex3i(430,100,250);  
	glVertex3i(440, 80,250);  
	glVertex3i(425, 75,250);  
	glVertex3i(410, 75,250);  
	glVertex3i(410,155,250);
  
	glEnd();
	glFlush(); /* clear buffers */
 }


int main(int argc, char** argv)
{
   glutInit(&argc, argv);
   glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
   glutInitWindowSize (500, 500); 
   glutInitWindowPosition (0, 0);
   glutCreateWindow ("Susan's Picture"); /* window title */
   myinit ();  /* set attributes */
   glutDisplayFunc(display); 
   glutReshapeFunc(reshape);
   glutKeyboardFunc(keyboard);
   glutMainLoop();
   return 0;
}