int up(TIFF *T, int i)
{
if (i < 6)
return TIFFSetDirectory(T, i);
else
{
if (up(T, face_parent(i)))
return dn(T, face_index(i));
else
return 0;
}
}
void sph_model::draw_face(const int *fv, int fc,
const int *pv, int pc,
double r, double l, double t, double b, int d, int i)
{
GLuint o = 0;
int then = time;
if (status[i] != s_halt)
{
for (int fi = 0; fi < fc; ++fi)
{
int e = fi * 8 + d;
glActiveTexture(GL_TEXTURE0 + e);
o = cache.get_page(fv[fi], i, time, then);
glUniform1f(alpha[e], age(then));
glBindTexture(GL_TEXTURE_2D, o);
}
glUniform2f(tex_a[d], GLfloat(r), GLfloat(t));
glUniform2f(tex_d[d], GLfloat(l), GLfloat(b));
}
if (status[i] == s_pass)
{
for (int pi = 0; pi < pc; ++pi)
cache.get_page(pv[pi], i, time, then);
}
if (status[i] == s_pass)
{
const double x = (r + l) * 0.5;
const double y = (t + b) * 0.5;
draw_face(fv, fc, pv, pc, r, x, t, y, d + 1, face_child(i, 0));
draw_face(fv, fc, pv, pc, x, l, t, y, d + 1, face_child(i, 1));
draw_face(fv, fc, pv, pc, r, x, y, b, d + 1, face_child(i, 2));
draw_face(fv, fc, pv, pc, x, l, y, b, d + 1, face_child(i, 3));
}
if (status[i] == s_draw)
{
int n, s, e, w, j = 0;
face_neighbors(i, n, s, e, w);
if (i > 5) j = (status[face_parent(n)] == s_draw ? 1 : 0)
| (status[face_parent(s)] == s_draw ? 2 : 0)
| (status[face_parent(e)] == s_draw ? 4 : 0)
| (status[face_parent(w)] == s_draw ? 8 : 0);
glUniform1i(level, d);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elements[j]);
glDrawElements(GL_QUADS, count, GL_UNSIGNED_SHORT, 0);
}
if (status[i] != s_halt)
{
for (int fi = 0; fi < fc; ++fi)
{
glActiveTexture(GL_TEXTURE0 + fi * 8 + d);
glBindTexture(GL_TEXTURE_2D, cache.get_fill());
}
}
}
