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

float light_ambient [] = {0.5,0.7,0,0};
float light_diffuse [] = {1,1,1,0};
float light_pos [] = {0.0,2.5,0.0,1.0};

float mat_ambient [] = {0,.0,.0,0};
float mat_diffuse [] = {.5,.0,.0,0};
float mat_specular [] = {.5,.6,.1,0};
float mat_emission [] = {0,.0,.0,0};
float mat_shininess = 64;

float focus_ambient_diffuse [] = {1,1,.1,0};
float focus_emission [] = {0.5,0.7,0.1,0};

void initgl()
{
	glClearColor(0.7,0.7,0.7,0.0);

	glLightfv(GL_LIGHT0,GL_AMBIENT,light_ambient);
	glLightfv(GL_LIGHT0,GL_DIFFUSE,light_diffuse);
	glLightfv(GL_LIGHT0,GL_POSITION,light_pos);

	glEnable(GL_LIGHTING);
	glEnable(GL_LIGHT0);
	glEnable(GL_NORMALIZE);
	glEnable(GL_DEPTH_TEST);
    
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glOrtho(-3,3,-2,4,-3,3);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
}

void display(void)
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	glPushMatrix();
		glMaterialfv(GL_FRONT,GL_AMBIENT_AND_DIFFUSE,focus_ambient_diffuse);
		glMaterialfv(GL_FRONT,GL_EMISSION,focus_emission);
		glTranslatef(light_pos[0],light_pos[1],light_pos[2]);
 	    glutSolidSphere(.35,15,15);
	glPopMatrix();

	glPushMatrix();
	    glMaterialfv(GL_FRONT,GL_AMBIENT,mat_ambient);
		glMaterialfv(GL_FRONT,GL_DIFFUSE,mat_diffuse);
 	    glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular);
		glMaterialfv(GL_FRONT,GL_EMISSION,mat_emission);
 	    glMaterialf(GL_FRONT,GL_SHININESS,mat_shininess);
		glTranslatef(2.4,2,0);
 	    glutSolidSphere(.4,20,20);
	glPopMatrix();

    glutSolidTeapot(1.3);
	glFlush();
}

int main(int argc, char ** argv)
{
	glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA | GLUT_DEPTH);
	glutInitWindowPosition(20,20);
	glutInitWindowSize(350,350);
	glutCreateWindow("Luz Puntual");
	initgl();
	glutDisplayFunc(display);
	glutMainLoop();
	return 0;
}