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

using namespace std;

void reshape(int w, int h)
{
	glViewport(0, 0, w, h);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluOrtho2D(-1, 1, -1, 1);
	glMatrixMode(GL_MODELVIEW);
}

float a[2] = {-1.0f, 0.0f};
float b[2] = {0.5f, 0.0f};
float c[2] = {0.5f, 1.0f};

void draw(void)
{
	glClear(GL_COLOR_BUFFER_BIT);
	glColor3f(0.0f, 0.0f, 1.0f);
	glBegin(GL_TRIANGLES);
	glVertex2d(a[0],a[1]);
	glVertex2d(b[0],b[1]);
	glVertex2d(c[0],c[1]);
	glEnd();
	glFlush();
}

int main(int argc, char *argv[])
{
	glutInit(&argc, argv);
	glutInitWindowSize(400,300);
	glutInitWindowPosition(100,100);
	glutInitDisplayMode(GLUT_RGB);
	glutCreateWindow("Warsztaty 1");
	glutReshapeFunc(reshape);
	glutDisplayFunc(draw);
	glClearColor(0, 0, 0, 0);
	glutMainLoop();
	return 0;
}