NotImplementedError: dde.geometry.PointSet doesn't support inside.

[julesangebault]

Hi i'm trying to set my domain ( a rectangle with an hydrfoil inside). For the hydrofoil, i'm using the class PointCloud here's my code :

import deepxde as dde
from deepxde.backend import tensorflow_compat_v1 as tf
domain = dde.geometry.geometry_2d.Rectangle(xmin, xmax)

domain_inside = domain.random_points(100,random="LHS")

#foil 
foil_points=naca("0012",0.1,5,cut=1) #numpy array (194,2) 

foil =  dde.geometry.PointCloud(foil_points)

foil_inside = foil.random_points(100,random="LHS")

#fluid domain 

fluid = dde.geometry.csg.CSGDifference(domain, foil)

boundary_fluid = fluid.random_boundary_points(100,random="LHS")

I get the error when I compute boundary_fluid

The error:

boundary_fluid = fluid.random_boundary_points(100,random="LHS")
Traceback (most recent call last):

  File "C:\Users\jules\AppData\Local\Temp/ipykernel_5296/2785187469.py", line 1, in <module>
    boundary_fluid = fluid.random_boundary_points(100,random="LHS")

  File "C:\Users\jules\anaconda3\lib\site-packages\deepxde\geometry\csg.py", line 158, in random_boundary_points
    ~self.geom2.inside(geom1_boundary_points)

  File "C:\Users\jules\anaconda3\lib\site-packages\deepxde\geometry\pointcloud.py", line 27, in inside
    raise NotImplementedError("dde.geometry.PointSet doesn't support inside.")

NotImplementedError: dde.geometry.PointSet doesn't support inside.

[lululxvi]

dde.geometry.PointCloud currently cannot be used with CSGDifference together. You can use a polygon to represent the hydrfoil.

[alexkarvou]

Hello and thank you for the clarification. I have the equivalent issue with OP but with a 3d geometry for a boat hull inside a cuboid. Is there any way to represent such a geometry with existing functionalities?

[lululxvi]

You can use dde.geometry.PointCloud to represent the geometry, not only the boat.