Flurry.txt

#include<Windows.h>
#include<gl/GL.h>
#include<gl/glut.h>
#include <iostream>

float R = 0.2;
float G = .7;
float B = 0.5;

int random(int a) {
	return (rand() % a);
}

float random2(int a) {
	return (rand() % a);
}

void myInit(void)
{
	glClearColor(1.0, 1.0, 1.0, 0.0);
	glPointSize(4.0);
	glClear(GL_COLOR_BUFFER_BIT);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluOrtho2D(0.0, 640, 0.0, 480);
}

void flurry()
{
	for (size_t i = 0; i < 200; i++)
	{

		GLint x = random(640);
		GLint y = random(480);
		GLint lingth = random(200);

		R = (random2(10) / 10.0);
		G = (random2(10) / 10.0);
		B = (random2(10) / 10.0);

		glBegin(GL_POLYGON);

		glColor3f(R, G, B);

		glVertex2i(x - lingth, y);
		glVertex2i(x, y - lingth);
		glVertex2i(x + lingth, y);
		glVertex2i(x, y + lingth);

		glEnd();
		glFlush();
	}

}


void main(int argc, char** argv)
{

	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
	glutInitWindowSize(640, 480);
	glutInitWindowPosition(50, 50);
	glutCreateWindow("Flurry");
	glutDisplayFunc(flurry);
	myInit();
	glutMainLoop();

}