exports.update_emitter_transform = function(obj) {
var batches = obj._batches;
for (var i = 0; i < batches.length; i++) {
var batch = batches[i];
var psys = batches[i].particle_system;
if (!psys)
continue;
var pbuf = batch.bufs_data;
var world_space = psys._internal.use_world_space;
var pcache = psys._internal.positions_cache;
var ncache = psys._internal.normals_cache;
var positions = psys._internal.positions;
var normals = psys._internal.normals;
if (world_space) {
var is_billboard = !batch.halo_particles;
pose_emitter_world(psys, is_billboard, positions, normals, obj._render.tsr,
pcache, ncache);
} else
pose_emitter_local(positions, normals, obj._render.tsr,
pcache, ncache);
m_geom.make_dynamic(pbuf);
m_geom.update_bufs_data_array(pbuf, "a_position", 3, pcache);
m_geom.update_bufs_data_array(pbuf, "a_normal", 3, ncache);
}
}
exports.set_factor = function(obj, psys_name, factor) {
var batches = obj._batches;
for (var i = 0; i < batches.length; i++) {
var batch = batches[i];
var psys = batch.particle_system;
if (!psys || psys["name"] != psys_name)
continue;
var delay_attrs = psys._internal.delay_attrs;
if (factor == 1)
var delay_attrs_masked = delay_attrs;
else if (factor == 0) {
var is_billboard = !batch.halo_particles;
var inc = is_billboard? 4: 1;
var delay_attrs_masked = psys._internal.delay_attrs_masked;
for (var j = 0; j < delay_attrs_masked.length; j+=inc) {
delay_attrs_masked[j] = 10000;
if (is_billboard) {
delay_attrs_masked[j+1] = delay_attrs_masked[j];
delay_attrs_masked[j+2] = delay_attrs_masked[j];
delay_attrs_masked[j+3] = delay_attrs_masked[j];
}
}
} else {
var step = 1 / factor;
var delay_attrs_masked = psys._internal.delay_attrs_masked;
var is_billboard = !batch.halo_particles;
var inc = is_billboard? 4: 1;
var ind = 0;
for (var j = 0; j < delay_attrs_masked.length; j+=inc) {
if (j >= ind) {
delay_attrs_masked[j] = delay_attrs[j];
ind += step;
} else
delay_attrs_masked[j] = 10000;
if (is_billboard) {
delay_attrs_masked[j+1] = delay_attrs_masked[j];
delay_attrs_masked[j+2] = delay_attrs_masked[j];
delay_attrs_masked[j+3] = delay_attrs_masked[j];
}
}
}
var pbuf = batch.bufs_data;
m_geom.update_bufs_data_array(pbuf, "a_p_delay", 1, delay_attrs_masked);
}
}