/* 
In this lab, you will render 4 built-in objects from GLUT.

1.  Open a browser and load:
	http://www.opengl.org/resources/libraries/glut/spec3/node80.html#SECTION000120000000000000000
	to find the documentation on GLUT built-ins.

2.  You should do viewport transformations to fit all 4 objects into one window.  Your window is 
	800 pixels wide, by 200 pixels tall, so each viewport will be 200 by 200 pixels.  You'll 
	need to choose the lower left corner.

3.  You should also
	use   glRotatef  or glScalef		to make sure the objects fit in the viewport and so
	they have a pleasing angle (don't forget the push'es and pop's)
*/

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


void myInit()
{
	glEnable(GL_DEPTH_TEST);

	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glOrtho(-1.5,1.5,-1.5,1.5,-10,20.0);
	glMatrixMode(GL_MODELVIEW);

	glLoadIdentity();
	gluLookAt(0,0,5 , 0,0,0 , 0,1,0);
}

void display()
{
	glClearColor(1.0 , 1.0 , 1.0 , 0.0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glColor3f(0.0 , 0.0 , 0.0);

	// teapot
	glViewport(  0 , 0  ,200,200);
	glutWireTeapot( 1.0 );

	// torus
	glViewport(  200 ,  0 ,200,200);
	glPushMatrix();
	glRotatef(45,1,0,0);
	glutWireTorus(0.5,1.0,10,10);
	glPopMatrix();

	

	// cone
	glViewport( 400 , 0 ,200,200);
	glPushMatrix();
	glRotatef(-45,1,0,0);
	glRotatef(-45,0,1,0);
	glutWireCone(0.5,0.75,10,10);
	glPopMatrix();

	// dodecahedron
	glViewport( 600 , 0 ,200,200);
	glPushMatrix();
	glRotatef(-45,1,0,0);
	glRotatef(-45,0,1,0);
	glScalef(0.5,0.5,0.5);
	glutWireDodecahedron();
	glPopMatrix();

	glFlush();
}

void keyboard(unsigned char key, GLint x, GLint y)
{
	
	switch (key)
	{
	case 'q':
		exit( 0 );
		break;
	}


	return;

 }


int main (int argc , char **argv)
{
	glutInit(&argc,argv);
	glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
	glutInitWindowSize(800,200);
	glutInitWindowPosition(0,0);
	glutCreateWindow("Glut Objects");
	myInit();
	glutDisplayFunc(display);
	glutKeyboardFunc(keyboard);
	glutMainLoop();

	return 0;
}