/* Sets the 'act' flag for pieces which will undergo the rotation. */
static void
flag_pieces(piece_t pieces[27], int axis, int side)
{
int i, j;
float q[4];
for(i = 0; i < 27; i++)
{
q[0] = 0;
q[1] = pieces[i].pos[0];
q[2] = pieces[i].pos[1];
q[3] = pieces[i].pos[2];
mult_quat(pieces[i].qr, q);
for(j = 1; j < 4; j++)
q[j] = -q[j];
mult_quat(pieces[i].qr, q);
for(j = 1; j < 4; j++)
q[j] = -q[j];
if(fabs(q[axis] - side) < 0.1)
pieces[i].act = True;
else
pieces[i].act = False;
}
}
static Bool
draw_main(ModeInfo *mi, rubikblocks_conf *cp)
{
int i;
double x, y, z;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
get_position(cp->rot, &x, &y, &z, !cp->button_down);
glTranslatef((x-0.5)*6, (y-0.5)*6, -20);
gltrackball_rotate(cp->trackball);
get_rotation(cp->rot, &x, &y, &z, !cp->button_down);
glRotatef(x*360, 1, 0, 0);
glRotatef(y*360, 0, 1, 0);
glRotatef(z*360, 0, 0, 1);
glScalef(size, size, size);
# ifdef HAVE_MOBILE /* Keep it the same relative size when rotated. */
{
GLfloat h = MI_HEIGHT(mi) / (GLfloat) MI_WIDTH(mi);
int o = (int) current_device_rotation();
if (o != 0 && o != 180 && o != -180)
glScalef (1/h, 1/h, 1/h);
}
# endif
if(cp->wire) glColor3f(0.7, 0.7, 0.7);
if(!cp->pause)
for(i = 0; i < 27; i++)
if(cp->pieces[i].act)
mult_quat(cp->qfram, cp->pieces[i].qr);
for(i = 0; i < 27; i++)
{
glPushMatrix();
if(fabs(cp->pieces[i].qr[0]) < 1)
glRotatef(360/M_PI*acos(cp->pieces[i].qr[0]),
cp->pieces[i].qr[1], cp->pieces[i].qr[2], cp->pieces[i].qr[3]);
glCallList(cp->list_base + i);
glPopMatrix();
}
if((cp->t += tspeed) > cp->tmax) finish(cp);
return True;
}
static void
randomize(rubikblocks_conf *cp)
{
int axis, side;
int i, j;
for(i = 0; i < SHUFFLE; i++)
{
axis = (random()%3)+1;
side = rnd01()*2-1;
flag_pieces(cp->pieces, axis, side);
for(j = 1; j < 4; j++)
cp->qfram[j] = 0;
cp->qfram[0] = M_SQRT1_2;
cp->qfram[axis] = M_SQRT1_2;
for(j = 0; j < 27; j++)
{
if(cp->pieces[j].act)
mult_quat(cp->qfram, cp->pieces[j].qr);
}
}
}
static Bool
draw_main(ModeInfo *mi, rubikblocks_conf *cp)
{
int i;
double x, y, z;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
get_position(cp->rot, &x, &y, &z, !cp->button_down);
glTranslatef((x-0.5)*6, (y-0.5)*6, -20);
/* Do it twice because we don't track the device's orientation. */
glRotatef( current_device_rotation(), 0, 0, 1);
gltrackball_rotate(cp->trackball);
glRotatef(-current_device_rotation(), 0, 0, 1);
get_rotation(cp->rot, &x, &y, &z, !cp->button_down);
glRotatef(x*360, 1, 0, 0);
glRotatef(y*360, 0, 1, 0);
glRotatef(z*360, 0, 0, 1);
glScalef(size, size, size);
if(cp->wire) glColor3f(0.7, 0.7, 0.7);
if(!cp->pause)
for(i = 0; i < 27; i++)
if(cp->pieces[i].act)
mult_quat(cp->qfram, cp->pieces[i].qr);
for(i = 0; i < 27; i++)
{
glPushMatrix();
if(fabs(cp->pieces[i].qr[0]) < 1)
glRotatef(360/M_PI*acos(cp->pieces[i].qr[0]),
cp->pieces[i].qr[1], cp->pieces[i].qr[2], cp->pieces[i].qr[3]);
glCallList(cp->list_base + i);
glPopMatrix();
}
if((cp->t += tspeed) > cp->tmax) finish(cp);
return True;
}
