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

void display(void) {
	glClear(GL_COLOR_BUFFER_BIT);	//flush gl
	
	typedef GLint vertex3[2];	//2 attributes
	int rows= 3;
	int cols= 5;
	
	//data storage matrix
	vertex3 vData[rows][cols]= {
	    {{0,80}, {50,50}, {100,100}, {150,75}, {200,120}},
		{{0,50}, {50,100}, {100,80}, {150,150}, {200,60}},
		{{0,20}, {50,70}, {100,120}, {150,160}, {200,200}}
	};
	
	//set flags
	glPushAttrib(GL_ENABLE_BIT); 
	glEnable(GL_LINE_STIPPLE);
	
	//draw each line
    for(int r=0; r<rows; ++r){		
  		//line color, width, type
		switch(r){
  			case 0: 
				glColor3f(1.0, 0.0, 0.0);	//red
				glLineWidth(1.0);			//single-width
				glLineStipple(1, 0x00FF);	//dashed
  				break;
  			case 1:
  				glColor3f(0.0, 1.0, 0.0);	//green
  				glLineWidth(2.0);			//double-width
  				glLineStipple(1, 0x0101);	//dotted
  				break;
  			case 2:
  				glColor3f(0.0, 0.0, 1.0);	//blue
  				glLineWidth(3.0);			//triple-width
  				glLineStipple(1, 0x1C47);	//dash-dot
  				break;      			
		}
		
		//draw each vertice
		glBegin(GL_LINE_STRIP);		
			for(int c=0; c<cols; ++c){
				glVertex2iv(vData[r][c]);				
			}		
		glEnd();    
	}
	
	//clear flags
	glPopAttrib();
	
	glFlush();
}

int main(int argc,char *argv[]) {
	glutInit(&argc,argv);					//prepare glut
	glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);		//set the display mode
	glutInitWindowSize (500, 500);			//the size of the program window
	glutInitWindowPosition (100, 100);		//initial position for the window
	glutCreateWindow ("CS334-Lab9");		//create window with a title

	glClearColor(0,0,0,0.0);  				//background color
	glMatrixMode (GL_PROJECTION);			//2d envyronment
	gluOrtho2D (-20.0, 220.0, 0.0, 220.0);	//matrix dimensions

	glutDisplayFunc(display);				//show thee actual program
	glutMainLoop();

	return EXIT_SUCCESS;					//exit the program
}