Hi, I am facing the same issue in a previous post: Scatter_2d collisions with static objects - #21 by hclever
I am trying to use scatter2d separately on multiple objects imported from usd and am trying to scatter them in separate planes without colliding. May I know if there are any plans to include the volume_excl_prims option or something similar?
Thanks
Hi Frederick, let me make sure I understand: so you want to do something similar to the previous post, but rather than specifying a single plane you want to be able to specify multiple planes and multiple exclusion volumes? Do you have a specific number of either you need or do you want to be able to use N planes and M excl prims?
Also, can you confirm you are on replicator 1.7?
-Henry
Yes I am on replicator 1.7.7
I would like to with code like this:
with rep.new_layer():
small_plane = rep.create.plane(scale=(10,1,10), visible=False)
large_plane = rep.create.plane(scale=(20,1,10), visible=False)
large_sphere = rep.create.sphere(semantics=[('class', 'sphere')], position=(0, 100, 100),count=2)
small_cube = rep.create.cube(semantics=[('class', 'cube')], scale=(0.1), position=(0, 100, 100),count=20)
def scatter_large():
large=rep.get.prims(semantics=[("class", "sphere")])
with large:
rep.randomizer.scatter_2d(surface_prims=small_plane, check_for_collisions=True)
return large.node
def scatter_small():
small=rep.get.prims(semantics=[("class", "cube")])
with small:
rep.randomizer.scatter_2d(surface_prims=large_plane, check_for_collisions=True)
return small.node
generate smaller squares randomly within the larger plane such that it can spawn between the larger spheres without collision.
Hi,
I was able to do this using the replacement replicator files from the previous forum post - I attached it here. I used the following code in the script editor:
import omni.replicator.core as rep
import omni.usd
with rep.new_layer():
small_plane = rep.create.plane(scale=(1.5,1,1.5), visible=True)
large_plane = rep.create.plane(scale=(1.7,1,1.5), visible=True)
large_sphere = rep.create.sphere(semantics=[('class', 'sphere')], position=(0, 100, 100),count=2)
small_cube = rep.create.cube(semantics=[('class', 'cube')], scale=(0.1), position=(0, 100, 100),count=30)
def scatter_large():
large=rep.get.prims(semantics=[("class", "sphere")])
with large:
rep.randomizer.scatter_2d(surface_prims=small_plane, check_for_collisions=True)
return large.node
def scatter_small():
small=rep.get.prims(semantics=[("class", "cube")])
stage = omni.usd.get_context().get_stage()
large_plane_path = "/Replicator/Plane_Xform_01/Plane"
large_sphere_1 = "/Replicator/Sphere_Xform/Sphere"
large_sphere_2 = "/Replicator/Sphere_Xform_01/Sphere"
with small:
rep.randomizer.scatter_2d(surface_prims=[large_plane_path, large_sphere_1, large_sphere_2], check_for_collisions=True)
return small.node
rep.randomizer.register(scatter_large)
rep.randomizer.register(scatter_small)
with rep.trigger.on_frame(num_frames=1):
rep.randomizer.scatter_large()
rep.randomizer.scatter_small()
rep.orchestrator.run()
It’s good to know there is more interest in this feature - I will try to get it into replicator soon.
-Henry
OgnScatter2D.py (17.3 KB)
utils.py (46.3 KB)
Hi, do you think there is any way i could get this working with an imported usd?
My sample code is here:
import omni.replicator.core as rep
with rep.new_layer():
plane_s = rep.create.plane(scale=10, visible=False)
plane_l = rep.create.plane(scale=20, visible=False)
WORKER = 'omniverse://localhost/NVIDIA/Assets/Characters/Reallusion/Worker/Worker.usd'
def place_sphere():
spheres = rep.create.sphere(semantics=[('class', 'sphere')], position=(0, 100, 0), count=5)
with spheres:
rep.randomizer.scatter_2d(surface_prims=plane_s, check_for_collisions=True)
return spheres.node
# def place_cube():
# cubes = rep.get.prims(semantics=[('class', 'cube')])
# spheres = rep.get.prims(semantics=[('class', 'sphere')])
# with cubes:
# rep.randomizer.scatter_2d(surface_prims=[plane_l, spheres, cubes], check_for_collisions=True)
# return cubes.node
def place_worker():
spheres = rep.get.prims(semantics=[('class', 'sphere')])
worker = rep.create.from_usd(WORKER, semantics=[('class', 'worker')], count=20)
with worker:
rep.randomizer.scatter_2d(surface_prims=[plane_l, spheres], check_for_collisions=True)
return worker.node
rep.randomizer.register(place_sphere)
# rep.randomizer.register(place_cube)
rep.randomizer.register(place_worker)
with rep.trigger.on_frame(num_frames=5, rt_subframes=60):
rep.randomizer.place_sphere()
rep.randomizer.place_worker()
I think it should work … what is the current issue?
Hmm. Can you try this:
rep.create.from_usd(WORKER, semantics=[('class', 'worker')], count=20)
workers = rep.get.prims(semantics=[('class', 'worker')])
with workers:
rep.randomizer.scatter_2d(surface_prims=[plane_l, spheres], check_for_collisions=True)
If that doesn’t work i’ll poke around tomorrow and see what I can do.
Nope still having the same issue with this code:
import omni.replicator.core as rep
with rep.new_layer():
plane_s = rep.create.plane(scale=10, visible=False)
plane_l = rep.create.plane(scale=20, visible=False)
WORKER = 'omniverse://localhost/NVIDIA/Assets/Characters/Reallusion/Worker/Worker.usd'
def place_sphere():
spheres = rep.create.sphere(semantics=[('class', 'sphere')], position=(0, 100, 0), count=5)
with spheres:
rep.randomizer.scatter_2d(surface_prims=plane_s, check_for_collisions=True)
return spheres.node
# def place_cube():
# cubes = rep.get.prims(semantics=[('class', 'cube')])
# spheres = rep.get.prims(semantics=[('class', 'sphere')])
# with cubes:
# rep.randomizer.scatter_2d(surface_prims=[plane_l, spheres, cubes], check_for_collisions=True)
# return cubes.node
def place_worker():
spheres = rep.get.prims(semantics=[('class', 'sphere')])
worker = rep.create.from_usd(WORKER, semantics=[('class', 'worker')], count=20)
workers = rep.get.prims(semantics=[('class', 'worker')])
with workers:
rep.randomizer.scatter_2d(surface_prims=[plane_l, spheres], check_for_collisions=True)
#rep.randomizer.scatter_2d(surface_prims=plane_l, check_for_collisions=True)
return workers.node
rep.randomizer.register(place_sphere)
# rep.randomizer.register(place_cube)
rep.randomizer.register(place_worker)
with rep.trigger.on_frame(num_frames=5, rt_subframes=60):
rep.randomizer.place_sphere()
rep.randomizer.place_worker()
OK - i’ll look into this.
thanks
I’m also having an issue with it. I’m working on a fix for it - will keep you posted.
Do you need a fix for this immediately? I can make it work for that specific usd file but I’m worried it may not work for some other usd files. And so to really fix it right I need to test it with a bunch of them, which will take time for me to put together.
We have created a ticket internally for this bug -
-Henry
Nope its not urgent
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@frederick.liew I have all of these fixed/updated in replicator 1.9.1. Should be out with next release of Code (later this month? not exactly sure)
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okie thanks