#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif

void display()
{
	float red = 0.0f;
	float green = 0.0f;
	float blue = 0.0f;
	int i;

	glClear(GL_COLOR_BUFFER_BIT);

	glPointSize(5.0f);

	for (i=0; i<50; i++) {
		red -= .09f;
		green -= .12f;
		blue -= .15f;

		if (red < 0.15) red = 1.0f;
		if (green < 0.15) green = 1.0f;
		if (blue < 0.15) blue = 1.0f;

		glColor3f(red, green, blue);

		glBegin(GL_POINTS);
		glVertex2f(i*10, 150);
		glEnd();
	}
	glFlush(); 
}

void reshape(int w, int h)
{
	glViewport(0, 0, w, h);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluOrtho2D(0.0, 500.0, 0.0, 300.0);
}

int main(int argc, char** argv)
{
	glutInit(&argc, argv);

	glutInitWindowSize(500, 300);
	glutCreateWindow("Exemple - 3");     
	glutDisplayFunc(display);    
	glutReshapeFunc(reshape);    
	
	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);	
	
	glutMainLoop();

	return 0;
}