void drawScene(){
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
// Rotating the scene
glRotatef(angX, 1.0f, 0.0f, 0.0f);
glRotatef(angY, 0.0f, 1.0f, 0.0f);
glRotatef(angZ, 0.0f, 0.0f, 1.0f);
glLineWidth(1.5f);
// Drawing axes
glBegin(GL_LINES);
glColor3f(1.0, 0.0, 0.0);
glVertex3f(0, 0, 0);
glVertex3f(20, 0, 0);
glColor3f(0.0, 1.0, 0.0);
glVertex3f(0, 0, 0);
glVertex3f(0, 20, 0);
glColor3f(0.0, 0.0, 1.0);
glVertex3f(0, 0, 0);
glVertex3f(0, 0, 20);
glEnd();
// Drawing the scene
glColor3f(1.0, 1.0, 1.0);
//...........................................
GLfloat xA, xB, xC, xD;
GLfloat zA, zB, zC, zD;
PuntoVector3D* EYE = new PuntoVector3D(eyeX, 0.0f, eyeZ, 1.0f);
//PuntoVector3D* LOOK = new PuntoVector3D(lookX, 0.0f, lookZ, 1.0f);
PuntoVector3D* dir = new PuntoVector3D(lookX - eyeX, 0.0f, lookZ - eyeZ, 0.0f); dir->normalizar();
PuntoVector3D* perpen = new PuntoVector3D(-1.0*dir->getZ(), 0.0f, dir->getX(), 0.0f);
perpen->escalar((xRight - xLeft) / 2.0f);
//aux centro del plano cercano
PuntoVector3D* aux = dir->clonar();
aux->escalar(N);
aux->sumar(EYE);
xA = aux->getX() + perpen->getX();
zA = aux->getZ() + perpen->getZ();
xD = aux->getX() - perpen->getX();
zD = aux->getZ() - perpen->getZ();
delete aux;
//aux centro del plano lejano
aux = dir->clonar();
aux->escalar(F);
aux->sumar(EYE);
xB = aux->getX() + perpen->getX();
zB = aux->getZ() + perpen->getZ();
xC = aux->getX() - perpen->getX();
zC = aux->getZ() - perpen->getZ();
delete aux;
delete EYE;
delete dir;
delete perpen;
b->dibuja(min(xA, min(xB, min(xC, xD))),
min(zA, min(zB, min(zC, zD))),
max(xA, max(xB, max(xC, xD))),
max(zA, max(zB, max(zC, zD)))
);
//...........................................
glPopMatrix();
}
