viernes, 23 de marzo de 2012

Esfera Cubo

#include <GL/glut.h>

GLfloat anguloCuboX = 0.0f;
GLfloat anguloCuboY = 0.0f;
GLfloat anguloEsfera = 0.0f;

GLint ancho=400;

GLint alto=400;

int hazPerspectiva = 0;

void reshape(int width, int height)
{
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();

if(hazPerspectiva)
gluPerspective(60.0f, (GLfloat)width/(GLfloat)height, 1.0f, 20.0f);
else

glOrtho(-4,4, -4, 4, 1, 10);

glMatrixMode(GL_MODELVIEW);

ancho = width;
alto = height;
}

void drawCube(void)
{
glColor3f(1.0f, 0.0f, 0.0f);
glBegin(GL_QUADS); //cara frontal
glVertex3f(-1.0f, -1.0f, 1.0f);
glVertex3f( 1.0f, -1.0f, 1.0f);
glVertex3f( 1.0f, 1.0f, 1.0f);
glVertex3f(-1.0f, 1.0f, 1.0f);

glEnd();

glColor3f(0.0f, 1.0f, 0.0f);

glBegin(GL_QUADS); //cara trasera
glVertex3f( 1.0f, -1.0f, -1.0f);
glVertex3f(-1.0f, -1.0f, -1.0f);
glVertex3f(-1.0f, 1.0f, -1.0f);
glVertex3f( 1.0f, 1.0f, -1.0f);

glEnd();

glColor3f(0.0f, 0.0f, 1.0f);
glBegin(GL_QUADS); //cara lateral izq
glVertex3f(-1.0f,-1.0f, -1.0f);
glVertex3f(-1.0f,-1.0f, 1.0f);
glVertex3f(-1.0f, 1.0f, 1.0f);
glVertex3f(-1.0f, 1.0f, -1.0f);
glEnd();

glColor3f(1.0f, 1.0f, 0.0f);
glBegin(GL_QUADS); //cara lateral dcha
glVertex3f(1.0f, -1.0f, 1.0f);
glVertex3f(1.0f, -1.0f, -1.0f);
glVertex3f(1.0f, 1.0f, -1.0f);
glVertex3f(1.0f, 1.0f, 1.0f);
glEnd();

glColor3f(0.0f, 1.0f, 1.0f);
glBegin(GL_QUADS); //cara arriba
glVertex3f(-1.0f, 1.0f, 1.0f);
glVertex3f( 1.0f, 1.0f, 1.0f);
glVertex3f( 1.0f, 1.0f, -1.0f);
glVertex3f(-1.0f, 1.0f, -1.0f);
glEnd();

glColor3f(1.0f, 0.0f, 1.0f);
glBegin(GL_QUADS); //cara abajo
glVertex3f( 1.0f,-1.0f, -1.0f);
glVertex3f( 1.0f,-1.0f, 1.0f);
glVertex3f(-1.0f,-1.0f, 1.0f);
glVertex3f(-1.0f,-1.0f, -1.0f);
glEnd();
}

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

glLoadIdentity();

glTranslatef(0.0f, 0.0f, -5.0f);
glTranslatef(-3,0,0);

glRotatef(anguloCuboX, 1.0f, 0.0f, 0.0f);
glRotatef(anguloCuboY, 0.0f, 1.0f, 0.0f);
glScalef(0.5f, 0.5f, 0.5f);
drawCube();

glLoadIdentity();

glTranslatef(0.0f, 0.0f, -5.0f);
glRotatef(anguloEsfera, 1.0f, 0.0f, 0.0f);
glTranslatef(3.0f, 0.0f, 0.0f);

glColor3f(1.0f, 1.0f, 1.0f);
glutWireSphere(0.5f, 8, 8);

glFlush();
glutSwapBuffers();

anguloCuboX+=0.1f;
anguloCuboY+=0.1f;
anguloEsfera+=0.2f;
}

void init()
{
glClearColor(0,0,0,0);
glEnable(GL_DEPTH_TEST);
ancho = 400;
alto = 400;
}


void idle()
{
display();
}


void keyboard(unsigned char key, int x, int y)
{
switch(key)
{
case 'p':
case 'P':
hazPerspectiva=1;
reshape(ancho,alto);
break;

case 'o':
case 'O':
hazPerspectiva=0;
reshape(ancho,alto);
break;

case 27: // escape
// exit(0);
break;
}
}

int main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
glutInitWindowPosition(100, 100);
glutInitWindowSize(ancho, alto);
glutCreateWindow("Cubo 1");
init();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutIdleFunc(idle);
glutKeyboardFunc(keyboard);
glutMainLoop();
return 0;
}




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