/// Add everything from an object database, swaying positions.
///
/// \param db Database.
/// \param amplitude Swaying amplitudes.
/// \param phase Current phase.
/// \param block_size Block size, objects in same block are considered to be in same phase.
/// \param pass Render pass id.
void addObjectDatabaseSwaying(const ObjectDatabase &db, const vec3 &litude, float phase,
unsigned block_size, unsigned pass = 0)
{
for(unsigned ii = 0; (ii < db.getObjectCount()); ++ii)
{
const Object& obj = db.getObject(ii);
bsd_srand(ii / block_size);
float px = frand(-amplitude[0], amplitude[0]);
float py = frand(-amplitude[1], amplitude[1]);
float pz = frand(-amplitude[2], amplitude[2]);
float ax = frand(static_cast<float>(M_PI));
float ay = frand(static_cast<float>(M_PI));
float az = frand(static_cast<float>(M_PI));
px *= dnload_sinf(ax + phase * (brand() ? -1.0f : 1.0f));
py *= dnload_sinf(ay + phase * (brand() ? -1.0f : 1.0f));
pz *= dnload_sinf(az + phase * (brand() ? -1.0f : 1.0f));
mat4 tr = obj.unpackTransform(m_frame);
tr[12] += px;
tr[13] += py;
tr[14] += pz;
addObject(obj, tr, pass);
}
}
/// Add everything from an object database.
///
/// \param db Database.
/// \param pass Render pass id.
void addObjectDatabase(const ObjectDatabase &db, unsigned pass = 0)
{
for(unsigned ii = 0; (ii < db.getObjectCount()); ++ii)
{
const Object& obj = db.getObject(ii);
addObject(obj, pass);
}
}
/// Add objects from an object database, constructing at limits.
///
/// \param db Database.
/// \param pos Position to render from.
/// \param fw Collect objects that have bounding box lying in area this much forward.
/// \param bk Collect objects that have bounding box lying in area this much backward.
/// \param interp Fade-in interpolation range (<=0 to disable).
/// \param pass Render pass id.
void addObjectDatabaseConstructing(const ObjectDatabase &db, const vec3 &pos, float fw, float bk,
float fade = 0.0f, unsigned pass = 0)
{
unsigned mid = db.find(pos[2]);
#if defined(USE_LD)
if((fade >= fw) || (fade >= bk))
{
std::ostringstream sstr;
sstr << "fade-in range " << fade << " must be smaller than advance ranges " << vec2(bk, fw);
BOOST_THROW_EXCEPTION(std::runtime_error(sstr.str()));
}
#endif
// Forward.
{
float limit = pos[2] + fw;
for(unsigned ii = mid; (ii < db.getObjectCount()); ++ii)
{
const Object &obj = db.getObject(ii);
float cmp = obj.getBoundingVolume().getMinZ();
if(cmp <= limit)
{
float diff = limit - cmp;
if(diff <= fade)
{
mat4 aa = obj.unpackTransform(m_frame);
mat4 bb = randomOffsetTransform(aa, obj.getCenter(), ii, diff / fade);
addObject(obj, bb, pass, false);
}
else
{
addObject(obj, pass);
}
}
else if(cmp - fade > limit)
{
break;
}
}
}
if(mid > 0)
{
float limit = pos[2] - bk;
unsigned ii = mid - 1;
for(;;)
{
const Object &obj = db.getObject(ii);
float cmp = obj.getBoundingVolume().getMaxZ();
if(cmp >= limit)
{
float diff = cmp - limit;
if(diff <= fade)
{
//std::cout << "cmp " << cmp << " versus limit " << limit << ", diff: " << diff << std::endl <<
// obj.getBoundingVolume() << std::endl;
mat4 aa = obj.unpackTransform(m_frame);
mat4 bb = randomOffsetTransform(aa, obj.getCenter(), ii, diff / fade);
addObject(obj, bb, pass, false);
}
else
{
addObject(obj, pass);
}
}
else if(cmp + fade < limit)
{
break;
}
if(0 >= ii)
{
break;
}
--ii;
}
}
}
