SPHEntity（光滑粒子流体动力学实体）

class genesis.engine.entities.sph_entity.SPHEntity(scene, solver, material, morph, surface, particle_size, idx, particle_start)

基类：ParticleEntity

SPH-based particle entity.

init_sampler()

set_pos(f, pos)

set_pos_grad(f: <taichi._lib.core.taichi_python.DataType object at 0x7a5b26affc70>, pos_grad: NdarrayType(dtype=None, ndim=None, layout=Layout.AOS, needs_grad=None))

set_vel(f, vel)

set_vel_grad(f: <taichi._lib.core.taichi_python.DataType object at 0x7a5b26affc70>, vel_grad: NdarrayType(dtype=None, ndim=None, layout=Layout.AOS, needs_grad=None))

set_active(f, active)

clear_grad(f: <taichi._lib.core.taichi_python.DataType object at 0x7a5b26affc70>)

get_frame(f: <taichi._lib.core.taichi_python.DataType object at 0x7a5b26affc70>, pos: NdarrayType(dtype=None, ndim=None, layout=Layout.AOS, needs_grad=None), vel: NdarrayType(dtype=None, ndim=None, layout=Layout.AOS, needs_grad=None))

add_grad_from_state(state)

get_state()