#include <GL/glut.h>
GLfloat light_position[] = {100.0f, 100.0f, 100.0f, 1.0f};
// Setup diffuse property
GLfloat diffuse_light[] = {0.9f, 0.9f, 0.9f, 0.0f};
// Setup ambient property
GLfloat ambient_light[] = {0.2f, 0.2f, 0.2f, 0.0f};
// Setup specular property
GLfloat specular_light[] = {0.5f, 0.5f, 0.5f, 0.0f};

GLfloat brass_ambient[]={0.33, 0.22, 0.03, 1.0};
GLfloat brass_diffuse[]={0.78, 0.57, 0.11, 1.0};
GLfloat brass_specular[]={0.99, 0.91, 0.81, 1.0};
GLfloat brass_shininess = 27.8;

float deg = 0;


void brass() {
	glMaterialfv(GL_FRONT, GL_AMBIENT, brass_ambient);
	glMaterialfv(GL_FRONT, GL_DIFFUSE, brass_diffuse);
	glMaterialfv(GL_FRONT, GL_SPECULAR, brass_specular);
	glMaterialf(GL_FRONT, GL_SHININESS, brass_shininess);
	
	
}

void display() {
	glClear (GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();
		glLoadIdentity();
		glTranslatef(0.0, 0.0, -5.0);
		glRotatef (deg, 0.0, 1.0, 0.0);
		brass();
		glLightfv (GL_LIGHT0, GL_POSITION, light_position);
		glutSolidTeapot(1.0);
	glPopMatrix();
	glutSwapBuffers();
	glFlush();
}

void idleFunc() {
	deg += 0.3;
	glutPostRedisplay();
}



void setupLights() {
	glEnable (GL_LIGHTING);
	glEnable (GL_LIGHT0);
	glLightfv (GL_LIGHT0, GL_POSITION, light_position);
	glLightfv (GL_LIGHT0, GL_DIFFUSE, diffuse_light);
	glLightfv (GL_LIGHT0, GL_AMBIENT, ambient_light);
	glLightfv (GL_LIGHT0, GL_SPECULAR, specular_light);
}

void setupCamera() {
	glMatrixMode (GL_PROJECTION);
	glLoadIdentity();
	gluPerspective(60.0f, 1.0f, 0.1f, 1000.0f);
	glMatrixMode (GL_MODELVIEW);
}

void setupWindow() {
	glutInitDisplayMode (GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);
	
	glutInitWindowPosition(30, 30);
	glutInitWindowSize (400, 400);
	glutCreateWindow ("Brass Teapot");
	glEnable(GL_DEPTH_TEST);
	glEnable(GL_TEXTURE_2D);
	glutDisplayFunc(display);
	glutIdleFunc(idleFunc);
}

void main (int argv, char** argc) {
	glutInit(&argv, argc);
	setupWindow();
	setupCamera();
	setupLights();
	glutMainLoop();
}