oscillode/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/mediums/drude_lorentz_medium.py

import tidy3d as td
import sympy as sp
import sympy.physics.units as spu

from ... import contracts
from ... import sockets
from .. import base

class DrudeLorentzMediumNode(base.MaxwellSimTreeNode):
	node_type = contracts.NodeType.DrudeLorentzMedium
	
	bl_label = "Drude-Lorentz Medium"
	#bl_icon = ...
	
	####################
	# - Sockets
	####################
	input_sockets = {
		"eps_inf": sockets.RealNumberSocketDef(
			label=f"εr_∞",
		),
	} | {
		f"del_eps{i}": sockets.RealNumberSocketDef(
			label=f"Δεr_{i}",
		)
		for i in [1, 2, 3]
	} | {
		f"f{i}": sockets.PhysicalFreqSocketDef(
			label=f"f_{i}",
		)
		for i in [1, 2, 3]
	} | {
		f"delta{i}": sockets.PhysicalFreqSocketDef(
			label=f"δ_{i}",
		)
		for i in [1, 2, 3]
	}
	output_sockets = {
		"medium": sockets.MaxwellMediumSocketDef(
			label="Medium"
		),
	}
	
	####################
	# - Output Socket Computation
	####################
	@base.computes_output_socket("medium")
	def compute_medium(self: contracts.NodeTypeProtocol) -> td.Sellmeier:
		## Retrieval
		return td.Lorentz(
			eps_inf=self.compute_input(f"eps_inf"),
			coeffs = [
			(
				self.compute_input(f"del_eps{i}"),
				spu.convert_to(
					self.compute_input(f"f{i}"),
					spu.hertz,
				) / spu.hertz,
				spu.convert_to(
					self.compute_input(f"delta{i}"),
					spu.hertz,
				) / spu.hertz,
			)
			for i in [1, 2, 3]
			]
		)



####################
# - Blender Registration
####################
BL_REGISTER = [
	DrudeLorentzMediumNode,
]
BL_NODES = {
	contracts.NodeType.DrudeLorentzMedium: (
		contracts.NodeCategory.MAXWELLSIM_MEDIUMS
	)
}