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

int WIN1;

//Dichiarazione CLASSE Template Punto2D
template <class T> class point2D{
	public:
		point2D(){};
		point2D(T ascissa, T ordinata){
			x=ascissa;
			y=ordinata;
			r=1.0;
			g=0.0;
			b=0.0;
		};
		
		void SetPxy(T ascissa, T ordinata)
		{
			x=ascissa;
			y=ordinata;
		};
		
		void SetColorP(GLfloat rosso, GLfloat verde, GLfloat blu){
			r=rosso;
			g=verde;
			b=rosso;
		};
		
		void DrawPoint(void){
			glPointSize(3.0);
			glColor3f(r,g,b);
			glBegin(GL_POINTS);
			glVertex2i(x,y);
			glEnd();
			glFlush();
		};
	private:
		T x;//Coordinata X
		T y;//Coordinata Y
		GLfloat r,g,b;//Colore
};
// FINE CLASSE PUNTO 2D

point2D<int> p1;
point2D<int> p2(150,150);

void WIN1Display(void){
	glClearColor(0.0,0.0,0.0,0.0);
	glClear(GL_COLOR_BUFFER_BIT);
	p1.SetColorP(1.0,0.0,0.0);
	p1.DrawPoint();
	p2.SetColorP(0.0,1.0,1.0);
	p2.DrawPoint();
	glFlush();
}


void WIN1Reshape(int w, int h){
	glViewport(0,0,(GLsizei)w,(GLsizei)h);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluOrtho2D(0,(GLfloat)300,0,(GLfloat)300);

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
}


void InitGLUT(void){
	
	p1.SetPxy(45,100);
	glutInitDisplayMode(GLUT_RGB|GLUT_SINGLE);
	glutInitWindowPosition(0, 0);
	glutInitWindowSize(300,300);
	
	WIN1=glutCreateWindow("Punto");
	glutDisplayFunc(WIN1Display);
	glutReshapeFunc(WIN1Reshape);

}

void main(int argc, char *argv[])
{
	glutInit(&argc, argv);
	InitGLUT();
	glutMainLoop();
}