// OpenGL_lab1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <stdlib.h>
#include "glut.h"
#include <cmath>

using namespace std;

int wybor;
const double PI = 3.14;

enum
{
	EXIT,
	Points,
	Lines,
	LinesLoop,
	Triangles,
	TrianglesStrip,
	TriangleFan,
	Quads,
	QuadStrip,
	Polygon

};

void DisplayScene()
{
	glClearColor(0.0, 0.0, 0.0, 1.0);
	glClear(GL_COLOR_BUFFER_BIT);

	switch (wybor)
	{
	case Points:
		glBegin(GL_POINTS);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case Lines:
		glBegin(GL_LINES);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case LinesLoop:
		glBegin(GL_LINE_LOOP);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case Triangles:
		glBegin(GL_TRIANGLES);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case TrianglesStrip:
		glBegin(GL_TRIANGLE_STRIP);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case TriangleFan:
		glBegin(GL_TRIANGLE_FAN);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case Quads:
		glBegin(GL_QUADS);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case QuadStrip:
		glBegin(GL_QUAD_STRIP);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case Polygon:
		glBegin(GL_POLYGON);
		glColor3f(0.68, 0.85, 0.9);
		break;

	case EXIT:
		break;
	}
		double x, y;
		for (int i = 0; i < 20; i++)
		{
			y = 0.5*sin((2 * PI*i) / 20.0);
			x = 0.5*cos((2 * PI*i) / 20.0);
			glVertex2f(x, y);
		}

		glEnd();

		glFlush();

		glutSwapBuffers();

}

void Reshape(int width, int height)
{
	DisplayScene();
}


void Menu(int value)
{
	wybor = value;
	DisplayScene();
}

int main(int argc, char *argv[])
{
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
	glutInitWindowSize(500, 500);
	glutCreateWindow("Pierwszy program");
	glutDisplayFunc(DisplayScene);
	glutReshapeFunc(Reshape);

	glutCreateMenu(Menu);

	glutAddMenuEntry("Punkty", Points);
	glutAddMenuEntry("Linie", Lines);
	glutAddMenuEntry("LinieLoop", LinesLoop);
	glutAddMenuEntry("Trójkąty", Triangles);
	glutAddMenuEntry("TrójkątyStrip", TrianglesStrip);
	glutAddMenuEntry("TrójkątyFan", TriangleFan);
	glutAddMenuEntry("Czworokąt", Quads);
	glutAddMenuEntry("CzworokątStrip", QuadStrip);
	glutAddMenuEntry("Wielokąt", Polygon);
	glutAddMenuEntry("WYJŚCIE", EXIT);

	glutAttachMenu(GLUT_RIGHT_BUTTON);
	glutMainLoop();
	return 0;
}