#include<windows.h>
#include <iostream>
#include <stdlib.h>
#include <GL/glut.h>
using namespace std;

static int posXcorpo = 0, posZcorpo = 0, posYcorpo = 0;
int ang11 = 90, ang12 = 0, ang21 = 90, ang22 = 0;

void init(void) {
	glClearColor(0.0, 0.0, 0.0, 0.0);
}

void display(void) {
	glClear(GL_COLOR_BUFFER_BIT);
	glPushMatrix();

	//Esfera na origem
	glTranslatef(0.0, 0.0, 0.0);
	glutWireSphere(0.3, 10, 10);

	//pinca 1
	glPushMatrix();
		glTranslatef(1.0, 0.0, 0.0);
		glPushMatrix();
			glRotatef((GLfloat) ang11, 0.0, 0.0, 1.0);
			glScalef(0.5, 4.0, 1.0);
			glutWireCube(0.5);
		glPopMatrix();
		glPushMatrix();
			glTranslatef(1.0, 1.0, 0.0);
			glRotatef((GLfloat)ang12, 0.0, 0.0, 1.0);
			glScalef(0.5, 4.0, 1.0);
			glutWireCube(0.5);
		glPopMatrix();
	//Retornando a origem
	glPopMatrix();

	//pinca 2
	glPushMatrix();
		glTranslatef(0.0, 1.0, 0.0);
		glPushMatrix();
			glRotatef((GLfloat)ang21, 0.0, 0.0, 1.0);
			glScalef(4.0, 0.5, 1.0);
			glutWireCube(0.5);
		glPopMatrix();
		glPushMatrix();
			glTranslatef(1.0, 1.0, 0.0);
			glRotatef((GLfloat)ang22, 0.0, 0.0, 1.0);
			glScalef(4.0, 0.5, 1.0);
			glutWireCube(0.5);
		glPopMatrix();
	//Retornando a origem
	glPopMatrix();
	/* origem volta para o sistema de coordenadas original */
	glPopMatrix();
	glutSwapBuffers();
}

void reshape(int w, int h) {
	glViewport(0, 0, (GLsizei)w, (GLsizei)h);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluPerspective(65.0, (GLfloat)w / (GLfloat)h, 1.0, 20.0);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glTranslatef(0.0, 0.0, -5.0);
}

void keyboard(unsigned char key, int x, int y) {
	switch (key) {
	case 'o':
		ang11 = (ang11 + 1) % 360;
		ang12 = (ang12 + 1) % 360;
		ang21 = (ang21 - 1) % 360;
		ang22 = (ang22 - 1) % 360;
		glutPostRedisplay();
		break;
	case 'O':
		ang11 = (ang11 - 1) % 360;
		ang12 = (ang12 - 1) % 360;
		ang21 = (ang21 + 1) % 360;
		ang22 = (ang22 + 1) % 360;
		glutPostRedisplay();
		break;
	case 27:
		exit(0);
		break;
	default:
		break;
	}
}

int main(int argc, char** argv) {
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
	glutInitWindowSize(800, 600);
	glutInitWindowPosition(100, 100);
	glutCreateWindow(argv[0]);
	init();
	glutDisplayFunc(display);
	glutReshapeFunc(reshape);
	glutKeyboardFunc(keyboard);
	glutMainLoop();
	return 0;

}