/* sort_form - sort fields on form(per page) */
static void
sort_form(FORM *f)
{
FIELD **field;
FIELD *p;
int i, page, pmin, pmax;
field = f->field;
for (page = 0; page < f->maxpage; ++page) { /* for each page */
p = (FIELD *) 0;
pmin = Pmin(f, page);
pmax = Pmax(f, page);
for (i = pmin; i <= pmax; ++i) { /* for each field */
field[i]->index = i;
field[i]->page = page;
p = insert(field[i], p);
}
Smin(f, page) = p->index; /* set sorted min */
Smax(f, page) = p->sprev->index; /* set sorted max */
}
}
double SceneGL::SetCameraDefaultPosition(const NeighborMesh& mesh)
{
//roughly adjust view frustrum to object and camera position
Vector3d Pmin(mesh.vertices[0]), Pmax(mesh.vertices[0]);
Vector3d Center(0,0,0);
for( int i=0; i< mesh.vertices.size(); i++)
{
Vector3d P(mesh.vertices[i]);
for( int j=0; j<2; j++)
{
Pmin[j] = min(Pmin[j],P[j]);
Pmax[j] = max(Pmax[j],P[j]);
}
Center += P;
}
Center/= mesh.vertices.size();
target = Center;
//length of the diagonal of the bouding box
double distance = (Pmax-Pmin).norm();
//set arbitraty position to camera and adjusts max and min view planes
position = target + Vector3d( 0,0, distance*3);
znear = distance*0.1;
zfar = distance*5;
return distance;
}
