mindflow.geometry.CSGDifference

class mindflow.geometry.CSGDifference(geom1, geom2, sampling_config=None)

用于计算几何差异的CSG类。

参数：

• geom1 (Geometry) - 几何体对象。

• geom2 (Geometry) - 要从 geom1 中减去的几何体对象。

• sampling_config (SamplingConfig) - 采样配置。默认值： None。

支持平台：

Ascend GPU

样例：

>>> from mindflow.geometry import generate_sampling_config, Disk, Rectangle, CSGDifference
>>> sampling_config_csg = dict({
...     'domain': dict({
...         'random_sampling': True,
...         'size': 1000,
...         'sampler': 'uniform'
...     }),
...     'BC': dict({
...         'random_sampling': True,
...         'size': 200,
...         'sampler': 'uniform',
...         'with_normal': True,
...     }),
... })
>>> disk = Disk("disk", (1.2, 0.5), 0.8)
>>> rect = Rectangle("rect", (-1.0, 0), (1, 1))
>>> diff = CSGDifference(rect, disk)
>>> diff.set_sampling_config(generate_sampling_config(sampling_config_csg))
>>> domain = diff.sampling(geom_type="domain")
>>> bc, bc_normal = diff.sampling(geom_type="BC")
>>> print(domain.shape)
(1000, 2)