feat: Feature-parity with past.

We've added enough nodes to run simulations, and there is now only an "air gap" remaining between the math nodes and the sim design nodes. Of particular importance right now are: - Finalizing the exporter w/Sim Data output. - Finishing the plane wave, as well as other key source nodes (TFSF, Gaussian Beam, Plane Wave stand out in particular). - Reduce node, as we need to be able to reconstruct total flux through a field monitor, as well as generally do statistics. - Transform node, particularly w/pure-InfoFlow reindexing (we need to be able to reindex frequency -> vacwl), fourier transform (we need to be able to cast a time-domain field recording to frequency domain). - Finish debugging the basic structures, in particular the Cylinder primitive, but also the generic GeoNodes node, so we can build the membrane properly. - Ah yes, also, the grid definition. To satisfy the naysayers!
2024-05-03 00:19:02 +02:00 · 2024-05-03 00:19:02 +02:00 · 22daa6c603
parent 9df0d20c68
commit 22daa6c603
33 changed files with 709 additions and 604 deletions
--- a/TODO.md
+++ b/TODO.md
@ -1,7 +1,7 @@
 # Working TODO
 - [x] Wave Constant
 - Sources
-	- [ ] Temporal Shapes / Continuous Wave Temporal Shape
+	- [x] Temporal Shapes / Continuous Wave Temporal Shape
 	- [ ] Temporal Shapes / Symbolic Temporal Shape
 	- [ ] Plane Wave Source
 	- [ ] TFSF Source
@ -149,9 +149,10 @@
 ## Sources
 - [x] Temporal Shapes / Gaussian Pulse Temporal Shape
 - [x] Temporal Shapes / Continuous Wave Temporal Shape
+	- [ ] Merge Gaussian Pulse and Continuous Wave w/a socket set thing, since the I/O is effectively identical.
 - [ ] Temporal Shapes / Expr Temporal Shape
-	- [ ] Specify a Sympy function / data to generate appropriate array based on
- [ ] Temporal Shapes / Data Temporal Shape
+	- [ ] Specify a Sympy function / data to generate envelope data.
+	- [ ] Merge with the above.

 - [x] Point Dipole Source
 	- [ ] Use a viz mesh, not empty (empty doesn't play well with alpha hashing).
--- a/src/blender_maxwell/assets/internal/source/_source_point_dipole.blend
+++ b/src/blender_maxwell/assets/internal/source/_source_point_dipole.blend
--- a/src/blender_maxwell/contracts/operator_types.py
+++ b/src/blender_maxwell/contracts/operator_types.py
@ -24,3 +24,10 @@ class OperatorType(enum.StrEnum):

 	# Node: Tidy3DWebImporter
 	NodeLoadCloudSim = enum.auto()
+
+	# Node: Tidy3DWebExporter
+	NodeUploadSimulation = enum.auto()
+	NodeRunSimulation = enum.auto()
+	NodeReloadTrackedTask = enum.auto()
+	NodeEstCostTrackedTask = enum.auto()
+	ReleaseTrackedTask = enum.auto()
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/init.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/init.py
@ -1,25 +1,25 @@
 from blender_maxwell.contracts import (
-    BLClass,
-    BLColorRGBA,
-    BLEnumElement,
-    BLEnumID,
-    BLIcon,
-    BLIconSet,
-    BLIDStruct,
-    BLKeymapItem,
-    BLModifierType,
-    BLNodeTreeInterfaceID,
-    BLOperatorStatus,
-    BLPropFlag,
-    BLRegionType,
-    BLSpaceType,
-    KeymapItemDef,
-    ManagedObjName,
-    OperatorType,
-    PanelType,
-    PresetName,
-    SocketName,
-    addon,
+	BLClass,
+	BLColorRGBA,
+	BLEnumElement,
+	BLEnumID,
+	BLIcon,
+	BLIconSet,
+	BLIDStruct,
+	BLKeymapItem,
+	BLModifierType,
+	BLNodeTreeInterfaceID,
+	BLOperatorStatus,
+	BLPropFlag,
+	BLRegionType,
+	BLSpaceType,
+	KeymapItemDef,
+	ManagedObjName,
+	OperatorType,
+	PanelType,
+	PresetName,
+	SocketName,
+	addon,
 )

 from .bl_socket_types import BLSocketInfo, BLSocketType
@ -27,20 +27,20 @@ from .category_labels import NODE_CAT_LABELS
 from .category_types import NodeCategory
 from .flow_events import FlowEvent
 from .flow_kinds import (
-    ArrayFlow,
-    CapabilitiesFlow,
-    FlowKind,
-    InfoFlow,
-    LazyArrayRangeFlow,
-    LazyValueFuncFlow,
-    ParamsFlow,
-    ValueFlow,
+	ArrayFlow,
+	CapabilitiesFlow,
+	FlowKind,
+	InfoFlow,
+	LazyArrayRangeFlow,
+	LazyValueFuncFlow,
+	ParamsFlow,
+	ValueFlow,
 )
 from .flow_signals import FlowSignal
 from .icons import Icon
 from .mobj_types import ManagedObjType
 from .node_types import NodeType
-from .sim_types import BoundCondType, SimSpaceAxis
+from .sim_types import BoundCondType, SimSpaceAxis, manual_amp_time
 from .socket_colors import SOCKET_COLORS
 from .socket_types import SocketType
 from .tree_types import TreeType
@ -80,6 +80,7 @@ __all__ = [
 	'NodeType',
 	'BoundCondType',
 	'SimSpaceAxis',
+	'manual_amp_time',
 	'NodeCategory',
 	'NODE_CAT_LABELS',
 	'ManagedObjType',
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/bl_socket_types.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/bl_socket_types.py
@ -5,11 +5,13 @@ import typing as typ
 import bpy
 import sympy as sp

-from blender_maxwell.utils import blender_type_enum
 from blender_maxwell.utils import extra_sympy_units as spux
+from blender_maxwell.utils import logger

 from .socket_types import SocketType

+log = logger.get(__name__)
+
 BL_SOCKET_DESCR_ANNOT_STRING = ':: '


@ -190,13 +192,14 @@ class BLSocketType(enum.StrEnum):
 		return {
 			BLST.Color: S.Vec4,
 			BLST.Rotation: S.Vec3,
+			BLST.Vector: S.Vec3,
 			BLST.VectorAcceleration: S.Vec3,
 			BLST.VectorDirection: S.Vec3,
 			BLST.VectorEuler: S.Vec3,
 			BLST.VectorTranslation: S.Vec3,
 			BLST.VectorVelocity: S.Vec3,
 			BLST.VectorXYZ: S.Vec3,
-		}.get(self, {S.Scalar})
+		}.get(self, S.Scalar)

 	@property
 	def unambiguous_physical_type(self) -> spux.PhysicalType | None:
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/flow_kinds.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/flow_kinds.py
@ -111,7 +111,10 @@ class CapabilitiesFlow:
 				for name in self.must_match
 			)
 			# ∀b (b ∈ A) Constraint
-			and self.present_any.issubset(other.allow_any)
+			and (
+				self.present_any & other.allow_any
+				or (not self.present_any and not self.allow_any)
+			)
 		)


@ -777,7 +780,7 @@ class ParamsFlow:
 			raise ValueError(msg)

 		return [
-			spux.convert_to_unit_system(arg, unit_system, use_jax_array=True)
+			spux.scale_to_unit_system(arg, unit_system, use_jax_array=True)
 			if arg not in symbol_values
 			else symbol_values[arg]
 			for arg in self.func_args
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/sim_types.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/sim_types.py
@ -3,11 +3,45 @@
 import enum
 import typing as typ

+import jax.numpy as jnp
 import tidy3d as td


+def manual_amp_time(self, time: float) -> complex:
+	"""Copied implementation of `pulse.amp_time` for `tidy3d` temporal shapes, which replaces use of `numpy` with `jax.numpy` for `jit`-ability.
+
+	Since the function is detached from the method, `self` is not implicitly available. It should be pre-defined from a real source time object using `functools.partial`, before `jax.jit`ing.
+
+	## License
+	**This function is directly copied from `tidy3d`**.
+	As such, it should be considered available under the `tidy3d` license (as of writing, LGPL 2.1): <https://github.com/flexcompute/tidy3d/blob/develop/LICENSE>
+
+	## Reference
+	Permalink to GitHub source code: <https://github.com/flexcompute/tidy3d/blob/3ee34904eb6687a86a5fb3f4ed6d3295c228cd83/tidy3d/components/source.py#L143C1-L163C25>
+	"""
+	twidth = 1.0 / (2 * jnp.pi * self.fwidth)
+	omega0 = 2 * jnp.pi * self.freq0
+	time_shifted = time - self.offset * twidth
+
+	offset = jnp.exp(1j * self.phase)
+	oscillation = jnp.exp(-1j * omega0 * time)
+	amp = jnp.exp(-(time_shifted**2) / 2 / twidth**2) * self.amplitude
+
+	pulse_amp = offset * oscillation * amp
+
+	# subtract out DC component
+	if self.remove_dc_component:
+		pulse_amp = pulse_amp * (1j + time_shifted / twidth**2 / omega0)
+	else:
+		# 1j to make it agree in large omega0 limit
+		pulse_amp = pulse_amp * 1j
+
+	return pulse_amp
+
+
 ## TODO: Sim Domain type, w/pydantic checks!

+
 class SimSpaceAxis(enum.StrEnum):
 	"""The axis labels of the global simulation coordinate system."""

@ -61,13 +95,13 @@ class BoundCondType(enum.StrEnum):
 	Attributes:
 		Pml: "Perfectly Matched Layer" models infinite free space.
 			**Should be placed sufficiently far** (ex. $\frac{\lambda}{2}) from any active structures to mitigate divergence.
-		Periodic: Denotes Bloch-basedrepetition
+		Periodic: Denotes naive Bloch boundaries (aka. periodic w/phase shift of 0).
 		Pec: "Perfect Electrical Conductor" models a surface that perfectly reflects electric fields.
 		Pmc: "Perfect Magnetic Conductor" models a surface that perfectly reflects the magnetic fields.
 	"""

 	Pml = enum.auto()
-	Periodic = enum.auto()
+	NaiveBloch = enum.auto()
 	Pec = enum.auto()
 	Pmc = enum.auto()

@ -86,7 +120,7 @@ class BoundCondType(enum.StrEnum):
 			BCT.Pml: 'PML',
 			BCT.Pec: 'PEC',
 			BCT.Pmc: 'PMC',
-			BCT.Periodic: 'Periodic',
+			BCT.NaiveBloch: 'NaiveBloch',
 		}[v]

 	@staticmethod
@ -115,5 +149,5 @@ class BoundCondType(enum.StrEnum):
 			BCT.Pml: td.PML(),
 			BCT.Pec: td.PECBoundary(),
 			BCT.Pmc: td.PMCBoundary(),
-			BCT.Periodic: td.Periodic(),
+			BCT.NaiveBloch: td.Periodic(),
 		}[self]
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/init.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/init.py
@ -5,10 +5,9 @@ from . import (
 	mediums,
 	monitors,
 	outputs,
-	# simulations,
+	simulations,
 	sources,
-	# structures,
-	# utilities,
+	structures,
 )

 BL_REGISTER = [
@ -17,11 +16,10 @@ BL_REGISTER = [
 	*outputs.BL_REGISTER,
 	*sources.BL_REGISTER,
 	*mediums.BL_REGISTER,
-	# *structures.BL_REGISTER,
+	*structures.BL_REGISTER,
 	*bounds.BL_REGISTER,
 	*monitors.BL_REGISTER,
-	# *simulations.BL_REGISTER,
-	# *utilities.BL_REGISTER,
+	*simulations.BL_REGISTER,
 ]
 BL_NODES = {
 	**analysis.BL_NODES,
@ -29,9 +27,8 @@ BL_NODES = {
 	**outputs.BL_NODES,
 	**sources.BL_NODES,
 	**mediums.BL_NODES,
-	# **structures.BL_NODES,
+	**structures.BL_NODES,
 	**bounds.BL_NODES,
 	**monitors.BL_NODES,
-	# **simulations.BL_NODES,
-	# **utilities.BL_NODES,
+	**simulations.BL_NODES,
 }
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/extract_data.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/extract_data.py
@ -45,7 +45,7 @@ class ExtractDataNode(base.MaxwellSimNode):
 	}
 	output_socket_sets: typ.ClassVar = {
 		'Sim Data': {'Monitor Data': sockets.MaxwellMonitorDataSocketDef()},
-		'Monitor Data': {'Expr': sockets.ExprSocketDef()},
+		'Monitor Data': {'Expr': sockets.ExprSocketDef(active_kind=ct.FlowKind.Array)},
 	}

 	####################
@ -409,7 +409,7 @@ class ExtractDataNode(base.MaxwellSimNode):
 	####################
 	@events.computes_output_socket(
 		# Trigger
-		'Data',
+		'Expr',
 		kind=ct.FlowKind.Info,
 		# Loaded
 		props={'monitor_data_type', 'extract_filter'},
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/math/filter_math.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/math/filter_math.py
@ -110,10 +110,10 @@ class FilterMathNode(base.MaxwellSimNode):
 	bl_label = 'Filter Math'

 	input_sockets: typ.ClassVar = {
-		'Expr': sockets.ExprSocketDef(),
+		'Expr': sockets.ExprSocketDef(active_kind=ct.FlowKind.Array),
 	}
 	output_sockets: typ.ClassVar = {
-		'Expr': sockets.ExprSocketDef(),
+		'Expr': sockets.ExprSocketDef(active_kind=ct.FlowKind.Array),
 	}

 	####################
@ -187,14 +187,13 @@ class FilterMathNode(base.MaxwellSimNode):
 	def draw_props(self, _: bpy.types.Context, layout: bpy.types.UILayout) -> None:
 		layout.prop(self, self.blfields['operation'], text='')

-		if self.active_socket_set == 'Dimensions':
-			if self.operation in [FilterOperation.PinLen1, FilterOperation.Pin]:
-				layout.prop(self, self.blfields['dim_0'], text='')
+		if self.operation in [FilterOperation.PinLen1, FilterOperation.Pin]:
+			layout.prop(self, self.blfields['dim_0'], text='')

-			if self.operation == FilterOperation.Swap:
-				row = layout.row(align=True)
-				row.prop(self, self.blfields['dim_0'], text='')
-				row.prop(self, self.blfields['dim_1'], text='')
+		if self.operation == FilterOperation.Swap:
+			row = layout.row(align=True)
+			row.prop(self, self.blfields['dim_0'], text='')
+			row.prop(self, self.blfields['dim_1'], text='')

 	####################
 	# - Events
@ -292,7 +291,7 @@ class FilterMathNode(base.MaxwellSimNode):

 			return lazy_value_func.compose_within(
 				operation.jax_func(axis_0, axis_1),
-				enclosing_func_args=[int] if operation == 'PIN' else [],
+				enclosing_func_args=[int] if operation == FilterOperation.Pin else [],
 				supports_jax=True,
 			)
 		return ct.FlowSignal.FlowPending
@ -383,7 +382,7 @@ class FilterMathNode(base.MaxwellSimNode):
 			pinned_value = input_sockets['Value']
 			has_pinned_value = not ct.FlowSignal.check(pinned_value)

-			if props['operation'] == 'PIN' and has_pinned_value:
+			if props['operation'] == FilterOperation.Pin and has_pinned_value:
 				nearest_idx_to_value = info.dim_idx[dim_0].nearest_idx_of(
 					pinned_value, require_sorted=True
 				)
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/math/operate_math.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/math/operate_math.py
@ -56,11 +56,11 @@ class OperateMathNode(base.MaxwellSimNode):
 	bl_label = 'Operate Math'

 	input_sockets: typ.ClassVar = {
-		'Expr L': sockets.ExprSocketDef(),
-		'Expr R': sockets.ExprSocketDef(),
+		'Expr L': sockets.ExprSocketDef(active_kind=ct.FlowKind.Array),
+		'Expr R': sockets.ExprSocketDef(active_kind=ct.FlowKind.Array),
 	}
 	output_sockets: typ.ClassVar = {
-		'Expr': sockets.ExprSocketDef(),
+		'Expr': sockets.ExprSocketDef(active_kind=ct.FlowKind.Array),
 	}

 	####################
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/base.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/base.py
@ -477,6 +477,7 @@ class MaxwellSimNode(bpy.types.Node):
 			for socket_name, socket_def in created_sockets.items():
 				socket_def.preinit(all_bl_sockets[socket_name])
 				socket_def.init(all_bl_sockets[socket_name])
+				socket_def.postinit(all_bl_sockets[socket_name])

 	def _sync_sockets(self) -> None:
 		"""Synchronize the node's sockets with the active sockets.
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/bounds/bound_cond_nodes/bloch_bound_cond.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/bounds/bound_cond_nodes/bloch_bound_cond.py
@ -208,7 +208,7 @@ class BlochBoundCondNode(base.MaxwellSimNode):
 			return td.Periodic()

 		# Source-Derived
-		if props['active_socket_set'] == 'Naive':
+		if props['active_socket_set'] == 'Source-Derived':
 			sim_domain = input_sockets['Sim Domain']
 			valid_sim_axis = props['valid_sim_axis']

--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/mediums/library_medium.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/mediums/library_medium.py
@ -301,15 +301,16 @@ class LibraryMediumNode(base.MaxwellSimNode):
 	####################
 	@events.on_show_plot(
 		managed_objs={'plot'},
-		props={'material'},
+		props={'medium'},
 		stop_propagation=True,
 	)
 	def on_show_plot(
 		self,
-		managed_objs: dict,
+		managed_objs,
+		props,
 	):
 		managed_objs['plot'].mpl_plot_to_image(
-			lambda ax: self.medium.plot(self.medium.frequency_range, ax=ax),
+			lambda ax: self.medium.plot(props['medium'].frequency_range, ax=ax),
 			bl_select=True,
 		)
 		## TODO: Plot based on Wl, not freq.
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/outputs/init.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/outputs/init.py
@ -1,13 +1,13 @@
-#from . import file_exporters, viewer, web_exporters
-from . import viewer
+# from . import file_exporters, viewer, web_exporters
+from . import viewer, web_exporters

 BL_REGISTER = [
 	*viewer.BL_REGISTER,
-	#*file_exporters.BL_REGISTER,
-	#*web_exporters.BL_REGISTER,
+	# *file_exporters.BL_REGISTER,
+	*web_exporters.BL_REGISTER,
 ]
 BL_NODES = {
 	**viewer.BL_NODES,
-	#**file_exporters.BL_NODES,
-	#**web_exporters.BL_NODES,
+	# **file_exporters.BL_NODES,
+	**web_exporters.BL_NODES,
 }
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/outputs/web_exporters/tidy3d_web_exporter.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/outputs/web_exporters/tidy3d_web_exporter.py
@ -1,16 +1,23 @@
-import bpy
+import typing as typ
+
+import bpy
+import tidy3d as td
+
+from blender_maxwell.services import tdcloud
+from blender_maxwell.utils import bl_cache, logger

-from ......services import tdcloud
 from .... import contracts as ct
 from .... import sockets
 from ... import base, events

+log = logger.get(__name__)
+

 ####################
 # - Web Uploader / Loader / Runner / Releaser
 ####################
 class UploadSimulation(bpy.types.Operator):
-	bl_idname = 'blender_maxwell.nodes__upload_simulation'
+	bl_idname = ct.OperatorType.NodeUploadSimulation
 	bl_label = 'Upload Tidy3D Simulation'
 	bl_description = 'Upload the attached (locked) simulation, such that it is ready to run on the Tidy3D cloud'

@ -23,7 +30,7 @@ class UploadSimulation(bpy.types.Operator):
 			and context.node.lock_tree
 			and tdcloud.IS_AUTHENTICATED
 			and not context.node.tracked_task_id
-			and context.node.inputs['FDTD Sim'].is_linked
+			and context.node.inputs['Sim'].is_linked
 		)

 	def execute(self, context):
@ -33,7 +40,7 @@ class UploadSimulation(bpy.types.Operator):


 class RunSimulation(bpy.types.Operator):
-	bl_idname = 'blender_maxwell.nodes__run_simulation'
+	bl_idname = ct.OperatorType.NodeRunSimulation
 	bl_label = 'Run Tracked Tidy3D Sim'
 	bl_description = 'Run the currently tracked simulation task'

@ -61,7 +68,7 @@ class RunSimulation(bpy.types.Operator):


 class ReloadTrackedTask(bpy.types.Operator):
-	bl_idname = 'blender_maxwell.nodes__reload_tracked_task'
+	bl_idname = ct.OperatorType.NodeReloadTrackedTask
 	bl_label = 'Reload Tracked Tidy3D Cloud Task'
 	bl_description = 'Reload the currently tracked simulation task'

@ -86,7 +93,7 @@ class ReloadTrackedTask(bpy.types.Operator):


 class EstCostTrackedTask(bpy.types.Operator):
-	bl_idname = 'blender_maxwell.nodes__est_cost_tracked_task'
+	bl_idname = ct.OperatorType.NodeEstCostTrackedTask
 	bl_label = 'Est Cost of Tracked Tidy3D Cloud Task'
 	bl_description = 'Reload the currently tracked simulation task'

@ -113,7 +120,7 @@ class EstCostTrackedTask(bpy.types.Operator):


 class ReleaseTrackedTask(bpy.types.Operator):
-	bl_idname = 'blender_maxwell.nodes__release_tracked_task'
+	bl_idname = ct.OperatorType.ReleaseTrackedTask
 	bl_label = 'Release Tracked Tidy3D Cloud Task'
 	bl_description = 'Release the currently tracked simulation task'

@ -140,92 +147,60 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):
 	node_type = ct.NodeType.Tidy3DWebExporter
 	bl_label = 'Tidy3D Web Exporter'

-	input_sockets = {
-		'FDTD Sim': sockets.MaxwellFDTDSimSocketDef(),
+	input_sockets: typ.ClassVar = {
+		'Sim': sockets.MaxwellFDTDSimSocketDef(),
 		'Cloud Task': sockets.Tidy3DCloudTaskSocketDef(
 			should_exist=False,
 		),
 	}
+	output_sockets: typ.ClassVar = {
+		'Sim Data': sockets.Tidy3DCloudTaskSocketDef(
+			should_exist=True,
+		),
+		'Cloud Task': sockets.Tidy3DCloudTaskSocketDef(
+			should_exist=True,
+		),
+	}

 	####################
 	# - Properties
 	####################
-	lock_tree: bpy.props.BoolProperty(
-		name='Whether to lock the attached tree',
-		description='Whether or not to lock the attached tree',
-		default=False,
-		update=lambda self, context: self.sync_lock_tree(context),
-	)
-	tracked_task_id: bpy.props.StringProperty(
-		name='Tracked Task ID',
-		description='The currently tracked task ID',
-		default='',
-		update=lambda self, context: self.sync_tracked_task_id(context),
-	)
-
-	# Cache
-	cache_total_monitor_data: bpy.props.FloatProperty(
-		name='(Cached) Total Monitor Data',
-		description='Required storage space by all monitors',
-		default=0.0,
-	)
-	cache_est_cost: bpy.props.FloatProperty(
-		name='(Cached) Estimated Total Cost',
-		description='Est. Cost in FlexCompute units',
-		default=-1.0,
-	)
+	lock_tree: bool = bl_cache.BLField(False, prop_ui=True)
+	tracked_task_id: str = bl_cache.BLField('', prop_ui=True)

 	####################
-	# - Sync Methods
+	# - Computed
 	####################
-	def sync_lock_tree(self, context):
-		if self.lock_tree:
-			self.trigger_event(ct.FlowEvent.EnableLock)
-			self.locked = False
-			for bl_socket in self.inputs:
-				if bl_socket.name == 'FDTD Sim':
-					continue
-				bl_socket.locked = False
+	@bl_cache.cached_bl_property(persist=False)
+	def sim(self) -> td.Simulation | None:
+		sim = self._compute_input('Sim')
+		has_sim = not ct.FlowSignal.check(sim)

-		else:
-			self.trigger_event(ct.FlowEvent.DisableLock)
+		if has_sim:
+			sim.validate_pre_upload(source_required=True)
+			return sim
+		return None

-		self.on_prop_changed('lock_tree', context)
+	@bl_cache.cached_bl_property(persist=False)
+	def total_monitor_data(self) -> float:
+		if self.sim is not None:
+			return sum(self.sim.monitors_data_size.values())
+		return 0.0

-	def sync_tracked_task_id(self, context):
-		# Select Tracked Task
-		if self.tracked_task_id:
-			cloud_task = tdcloud.TidyCloudTasks.task(self.tracked_task_id)
+	@bl_cache.cached_bl_property(persist=False)
+	def est_cost(self) -> float | None:
+		if self.tracked_task_id != '':
 			task_info = tdcloud.TidyCloudTasks.task_info(self.tracked_task_id)
+			if task_info is not None:
+				return task_info.cost_est()

-			self.loose_output_sockets = {
-				'Cloud Task': sockets.Tidy3DCloudTaskSocketDef(
-					should_exist=True,
-				),
-			}
-			self.inputs['Cloud Task'].locked = True
-
-		# Release Tracked Task
-		else:
-			self.cache_est_cost = -1.0
-			self.loose_output_sockets = {}
-			self.inputs['Cloud Task'].on_prepare_new_task()
-			self.inputs['Cloud Task'].locked = False
-
-		self.on_prop_changed('tracked_task_id', context)
+		return None

 	####################
-	# - Output Socket Callbacks
+	# - Methods
 	####################
-	def validate_sim(self):
-		if (sim := self._compute_input('FDTD Sim')) is None:
-			msg = 'Tried to validate simulation, but none is attached'
-			raise ValueError(msg)
-
-		sim.validate_pre_upload(source_required=True)
-
 	def upload_sim(self):
-		if (sim := self._compute_input('FDTD Sim')) is None:
+		if self.sim is None:
 			msg = 'Tried to upload simulation, but none is attached'
 			raise ValueError(msg)

@ -242,7 +217,7 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):
 		cloud_task = tdcloud.TidyCloudTasks.mk_task(
 			task_name=new_task[0],
 			cloud_folder=new_task[1],
-			sim=sim,
+			sim=self.sim,
 			verbose=True,
 		)

@ -271,22 +246,24 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):
 		# Row: Upload Sim Buttons
 		row = layout.row(align=True)
 		row.operator(
-			UploadSimulation.bl_idname,
+			ct.OperatorType.NodeUploadSimulation,
 			text='Upload',
 		)
 		tree_lock_icon = 'LOCKED' if self.lock_tree else 'UNLOCKED'
-		row.prop(self, 'lock_tree', toggle=True, icon=tree_lock_icon, text='')
+		row.prop(
+			self, self.blfields['lock_tree'], toggle=True, icon=tree_lock_icon, text=''
+		)

 		# Row: Run Sim Buttons
 		row = layout.row(align=True)
 		row.operator(
-			RunSimulation.bl_idname,
+			ct.OperatorType.NodeRunSimulation,
 			text='Run',
 		)
 		if self.tracked_task_id:
 			tree_lock_icon = 'LOOP_BACK'
 			row.operator(
-				ReleaseTrackedTask.bl_idname,
+				ct.OperatorType.ReleaseTrackedTask,
 				icon='LOOP_BACK',
 				text='',
 			)
@ -313,7 +290,7 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):
 		col.label(icon=conn_icon)

 		# Simulation Info
-		if self.inputs['FDTD Sim'].is_linked:
+		if self.inputs['Sim'].is_linked:
 			row = layout.row()
 			row.alignment = 'CENTER'
 			row.label(text='Sim Info')
@ -327,7 +304,7 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):
 			## Split: Right Column
 			col = split.column(align=False)
 			col.alignment = 'RIGHT'
-			col.label(text=f'{self.cache_total_monitor_data / 1_000_000:.2f}MB')
+			col.label(text=f'{self.total_monitor_data / 1_000_000:.2f}MB')

 		# Cloud Task Info
 		if self.tracked_task_id and tdcloud.IS_AUTHENTICATED:
@ -348,12 +325,12 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):
 				text=f'Status: {task_info.status.capitalize()}',
 			)
 			row.operator(
-				ReloadTrackedTask.bl_idname,
+				ct.OperatorType.NodeReloadTrackedTask,
 				text='',
 				icon='FILE_REFRESH',
 			)
 			row.operator(
-				EstCostTrackedTask.bl_idname,
+				ct.OperatorType.NodeEstCostTrackedTask,
 				text='',
 				icon='SORTTIME',
 			)
@ -369,9 +346,7 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):
 			col.label(text='Real Cost')

 			## Split: Right Column
-			cost_est = (
-				f'{self.cache_est_cost:.2f}' if self.cache_est_cost >= 0 else 'TBD'
-			)
+			cost_est = f'{self.est_cost:.2f}' if self.est_cost >= 0 else 'TBD'
 			cost_real = (
 				f'{task_info.cost_real:.2f}'
 				if task_info.cost_real is not None
@ -386,9 +361,37 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):

 		# Connection Information

+	####################
+	# - Events
+	####################
+	@events.on_value_changed(prop_name='lock_tree', props={'lock_tree'})
+	def on_lock_tree_changed(self, props):
+		if props['lock_tree']:
+			self.trigger_event(ct.FlowEvent.EnableLock)
+			self.locked = False
+			for bl_socket in self.inputs:
+				if bl_socket.name == 'Sim':
+					continue
+				bl_socket.locked = False
+
+		else:
+			self.trigger_event(ct.FlowEvent.DisableLock)
+
+	@events.on_value_changed(prop_name='tracked_task_id', props={'tracked_task_id'})
+	def on_tracked_task_id_changed(self, props):
+		if props['tracked_task_id']:
+			self.inputs['Cloud Task'].locked = True
+
+		else:
+			self.total_monitor_data = bl_cache.Signal.InvalidateCache
+			self.est_cost = bl_cache.Signal.InvalidateCache
+			self.inputs['Cloud Task'].on_prepare_new_task()
+			self.inputs['Cloud Task'].locked = False
+
 	####################
 	# - Output Methods
 	####################
+	## TODO: Retrieve simulation data if/when the simulation is done
 	@events.computes_output_socket(
 		'Cloud Task',
 		input_sockets={'Cloud Task'},
@ -399,21 +402,6 @@ class Tidy3DWebExporterNode(base.MaxwellSimNode):

 		return None

-	####################
-	# - Output Methods
-	####################
-	@events.on_value_changed(
-		socket_name='FDTD Sim',
-		input_sockets={'FDTD Sim'},
-	)
-	def on_value_changed__fdtd_sim(self, input_sockets):
-		if (sim := self._compute_input('FDTD Sim')) is None:
-			self.cache_total_monitor_data = 0
-			return
-
-		sim.validate_pre_upload(source_required=True)
-		self.cache_total_monitor_data = sum(sim.monitors_data_size.values())
-

 ####################
 # - Blender Registration
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/init.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/init.py
@ -1,14 +1,16 @@
 # from . import sim_grid
 # from . import sim_grid_axes
-from . import fdtd_sim, sim_domain
+from . import fdtd_sim, sim_domain, combine

 BL_REGISTER = [
+	*combine.BL_REGISTER,
 	*sim_domain.BL_REGISTER,
 	# *sim_grid.BL_REGISTER,
 	# *sim_grid_axes.BL_REGISTER,
 	*fdtd_sim.BL_REGISTER,
 ]
 BL_NODES = {
+	**combine.BL_NODES,
 	**sim_domain.BL_NODES,
 	# **sim_grid.BL_NODES,
 	# **sim_grid_axes.BL_NODES,
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/combine.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/combine.py
@ -1,8 +1,9 @@
 import typing as typ

-import bpy
 import sympy as sp

+from blender_maxwell.utils import bl_cache
+
 from ... import contracts as ct
 from ... import sockets
 from .. import base, events
@ -19,24 +20,8 @@ class CombineNode(base.MaxwellSimNode):
 		'Maxwell Sources': {},
 		'Maxwell Structures': {},
 		'Maxwell Monitors': {},
-		'Real 3D Vector': {f'x_{i}': sockets.RealNumberSocketDef() for i in range(3)},
-		# "Point 3D": {
-		# axis: sockets.PhysicalLengthSocketDef()
-		# for i, axis in zip(
-		# range(3),
-		# ["x", "y", "z"]
-		# )
-		# },
-		# "Size 3D": {
-		# axis_key: sockets.PhysicalLengthSocketDef()
-		# for i, axis_key, axis_label in zip(
-		# range(3),
-		# ["x_size", "y_size", "z_size"],
-		# ["X Size", "Y Size", "Z Size"],
-		# )
-		# },
 	}
-	output_socket_sets = {
+	output_socket_sets: typ.ClassVar = {
 		'Maxwell Sources': {
 			'Sources': sockets.MaxwellSourceSocketDef(
 				is_list=True,
@ -52,43 +37,69 @@ class CombineNode(base.MaxwellSimNode):
 				is_list=True,
 			),
 		},
-		'Real 3D Vector': {
-			'Real 3D Vector': sockets.Real3DVectorSocketDef(),
-		},
-		# "Point 3D": {
-		# "3D Point": sockets.PhysicalPoint3DSocketDef(),
-		# },
-		# "Size 3D": {
-		# "3D Size": sockets.PhysicalSize3DSocketDef(),
-		# },
 	}

-	amount: bpy.props.IntProperty(
-		name='# Objects to Combine',
-		description='Amount of Objects to Combine',
-		default=1,
-		min=1,
-		# max=MAX_AMOUNT,
-		update=lambda self, context: self.on_prop_changed('amount', context),
-	)
+	####################
+	# - Draw
+	####################
+	amount: int = bl_cache.BLField(2, abs_min=1, prop_ui=True)

 	####################
 	# - Draw
 	####################
 	def draw_props(self, context, layout):
-		layout.prop(self, 'amount', text='#')
+		layout.prop(self, self.blfields['amount'], text='')
+
+	####################
+	# - Events
+	####################
+	@events.on_value_changed(
+		# Trigger
+		prop_name={'active_socket_set', 'amount'},
+		props={'active_socket_set', 'amount'},
+		run_on_init=True,
+	)
+	def on_inputs_changed(self, props):
+		if props['active_socket_set'] == 'Maxwell Sources':
+			if (
+				not self.loose_input_sockets
+				or not next(iter(self.loose_input_sockets)).startswith('Source')
+				or len(self.loose_input_sockets) != props['amount']
+			):
+				self.loose_input_sockets = {
+					f'Source #{i}': sockets.MaxwellSourceSocketDef()
+					for i in range(props['amount'])
+				}
+
+		elif props['active_socket_set'] == 'Maxwell Structures':
+			if (
+				not self.loose_input_sockets
+				or not next(iter(self.loose_input_sockets)).startswith('Structure')
+				or len(self.loose_input_sockets) != props['amount']
+			):
+				self.loose_input_sockets = {
+					f'Structure #{i}': sockets.MaxwellStructureSocketDef()
+					for i in range(props['amount'])
+				}
+		elif props['active_socket_set'] == 'Maxwell Monitors':
+			if (
+				not self.loose_input_sockets
+				or not next(iter(self.loose_input_sockets)).startswith('Monitor')
+				or len(self.loose_input_sockets) != props['amount']
+			):
+				self.loose_input_sockets = {
+					f'Monitor #{i}': sockets.MaxwellMonitorSocketDef()
+					for i in range(props['amount'])
+				}
+		elif self.loose_input_sockets:
+			self.loose_input_sockets = {}

 	####################
 	# - Output Socket Computation
 	####################
-	@events.computes_output_socket(
-		'Real 3D Vector', input_sockets={'x_0', 'x_1', 'x_2'}
-	)
-	def compute_real_3d_vector(self, input_sockets) -> sp.Expr:
-		return sp.Matrix([input_sockets[f'x_{i}'] for i in range(3)])
-
 	@events.computes_output_socket(
 		'Sources',
+		kind=ct.FlowKind.Array,
 		all_loose_input_sockets=True,
 		props={'amount'},
 	)
@ -97,6 +108,7 @@ class CombineNode(base.MaxwellSimNode):

 	@events.computes_output_socket(
 		'Structures',
+		kind=ct.FlowKind.Array,
 		all_loose_input_sockets=True,
 		props={'amount'},
 	)
@ -105,45 +117,13 @@ class CombineNode(base.MaxwellSimNode):

 	@events.computes_output_socket(
 		'Monitors',
+		kind=ct.FlowKind.Array,
 		all_loose_input_sockets=True,
 		props={'amount'},
 	)
 	def compute_monitors(self, loose_input_sockets, props) -> sp.Expr:
 		return [loose_input_sockets[f'Monitor #{i}'] for i in range(props['amount'])]

-	####################
-	# - Input Socket Compilation
-	####################
-	@events.on_value_changed(
-		prop_name='active_socket_set',
-		props={'active_socket_set', 'amount'},
-		run_on_init=True,
-	)
-	def on_value_changed__active_socket_set(self, props):
-		if props['active_socket_set'] == 'Maxwell Sources':
-			self.loose_input_sockets = {
-				f'Source #{i}': sockets.MaxwellSourceSocketDef()
-				for i in range(props['amount'])
-			}
-		elif props['active_socket_set'] == 'Maxwell Structures':
-			self.loose_input_sockets = {
-				f'Structure #{i}': sockets.MaxwellStructureSocketDef()
-				for i in range(props['amount'])
-			}
-		elif props['active_socket_set'] == 'Maxwell Monitors':
-			self.loose_input_sockets = {
-				f'Monitor #{i}': sockets.MaxwellMonitorSocketDef()
-				for i in range(props['amount'])
-			}
-		else:
-			self.loose_input_sockets = {}
-
-	@events.on_value_changed(
-		prop_name='amount',
-	)
-	def on_value_changed__amount(self):
-		self.on_value_changed__active_socket_set()
-

 ####################
 # - Blender Registration
@ -151,4 +131,4 @@ class CombineNode(base.MaxwellSimNode):
 BL_REGISTER = [
 	CombineNode,
 ]
-BL_NODES = {ct.NodeType.Combine: (ct.NodeCategory.MAXWELLSIM_UTILITIES)}
+BL_NODES = {ct.NodeType.Combine: (ct.NodeCategory.MAXWELLSIM_SIMS)}
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/fdtd_sim.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/fdtd_sim.py
@ -1,3 +1,5 @@
+import typing as typ
+
 import sympy as sp
 import tidy3d as td

@ -13,9 +15,9 @@ class FDTDSimNode(base.MaxwellSimNode):
 	####################
 	# - Sockets
 	####################
-	input_sockets = {
-		'Domain': sockets.MaxwellSimDomainSocketDef(),
+	input_sockets: typ.ClassVar = {
 		'BCs': sockets.MaxwellBoundCondsSocketDef(),
+		'Domain': sockets.MaxwellSimDomainSocketDef(),
 		'Sources': sockets.MaxwellSourceSocketDef(
 			is_list=True,
 		),
@ -26,32 +28,33 @@ class FDTDSimNode(base.MaxwellSimNode):
 			is_list=True,
 		),
 	}
-	output_sockets = {
-		'FDTD Sim': sockets.MaxwellFDTDSimSocketDef(),
+	output_sockets: typ.ClassVar = {
+		'Sim': sockets.MaxwellFDTDSimSocketDef(),
 	}

 	####################
 	# - Output Socket Computation
 	####################
 	@events.computes_output_socket(
-		'FDTD Sim',
+		'Sim',
 		kind=ct.FlowKind.Value,
 		input_sockets={'Sources', 'Structures', 'Domain', 'BCs', 'Monitors'},
+		input_socket_kinds={
+			'Sources': ct.FlowKind.Array,
+			'Structures': ct.FlowKind.Array,
+			'Domain': ct.FlowKind.Value,
+			'BCs': ct.FlowKind.Value,
+			'Monitors': ct.FlowKind.Array,
+		},
 	)
 	def compute_fdtd_sim(self, input_sockets: dict) -> sp.Expr:
+		## TODO: Visualize the boundary conditions on top of the sim domain
 		sim_domain = input_sockets['Domain']
 		sources = input_sockets['Sources']
 		structures = input_sockets['Structures']
 		bounds = input_sockets['BCs']
 		monitors = input_sockets['Monitors']

-		# if not isinstance(sources, list):
-		# sources = [sources]
-		# if not isinstance(structures, list):
-		# structures = [structures]
-		# if not isinstance(monitors, list):
-		# monitors = [monitors]
-
 		return td.Simulation(
 			**sim_domain,  ## run_time=, size=, grid=, medium=
 			structures=structures,
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/sim_domain.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/sim_domain.py
@ -4,11 +4,15 @@ import sympy as sp
 import sympy.physics.units as spu

 from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
+from blender_maxwell.utils import extra_sympy_units as spux
+from blender_maxwell.utils import logger

 from ... import contracts as ct
 from ... import managed_objs, sockets
 from .. import base, events

+log = logger.get(__name__)
+

 class SimDomainNode(base.MaxwellSimNode):
 	node_type = ct.NodeType.SimDomain
@ -16,12 +20,27 @@ class SimDomainNode(base.MaxwellSimNode):
 	use_sim_node_name = True

 	input_sockets: typ.ClassVar = {
-		'Duration': sockets.PhysicalTimeSocketDef(
-			default_value=5 * spu.ps,
-			default_unit=spu.ps,
+		'Duration': sockets.ExprSocketDef(
+			physical_type=spux.PhysicalType.Time,
+			default_unit=spu.picosecond,
+			default_value=5,
+			abs_min=0,
+		),
+		'Center': sockets.ExprSocketDef(
+			shape=(3,),
+			mathtype=spux.MathType.Real,
+			physical_type=spux.PhysicalType.Length,
+			default_unit=spu.micrometer,
+			default_value=sp.Matrix([0, 0, 0]),
+		),
+		'Size': sockets.ExprSocketDef(
+			shape=(3,),
+			mathtype=spux.MathType.Real,
+			physical_type=spux.PhysicalType.Length,
+			default_unit=spu.micrometer,
+			default_value=sp.Matrix([1, 1, 1]),
+			abs_min=0.001,
 		),
-		'Center': sockets.PhysicalPoint3DSocketDef(),
-		'Size': sockets.PhysicalSize3DSocketDef(),
 		'Grid': sockets.MaxwellSimGridSocketDef(),
 		'Ambient Medium': sockets.MaxwellMediumSocketDef(),
 	}
@ -34,44 +53,6 @@ class SimDomainNode(base.MaxwellSimNode):
 		'modifier': managed_objs.ManagedBLModifier,
 	}

-	####################
-	# - Events
-	####################
-	@events.on_value_changed(
-		socket_name={'Center', 'Size'},
-		prop_name='preview_active',
-		run_on_init=True,
-		props={'preview_active'},
-		input_sockets={'Center', 'Size'},
-		managed_objs={'mesh', 'modifier'},
-		unit_systems={'BlenderUnits': ct.UNITS_BLENDER},
-		scale_input_sockets={
-			'Center': 'BlenderUnits',
-		},
-	)
-	def on_input_changed(
-		self,
-		props: dict,
-		managed_objs: dict,
-		input_sockets: dict,
-		unit_systems: dict,
-	):
-		# Push Input Values to GeoNodes Modifier
-		managed_objs['modifier'].bl_modifier(
-			managed_objs['mesh'].bl_object(location=input_sockets['Center']),
-			'NODES',
-			{
-				'node_group': import_geonodes(GeoNodes.SimulationSimDomain),
-				'unit_system': unit_systems['BlenderUnits'],
-				'inputs': {
-					'Size': input_sockets['Size'],
-				},
-			},
-		)
-		# Push Preview State
-		if props['preview_active']:
-			managed_objs['mesh'].show_preview()
-
 	####################
 	# - Outputs
 	####################
@ -94,6 +75,59 @@ class SimDomainNode(base.MaxwellSimNode):
 			'medium': input_sockets['Ambient Medium'],
 		}

+	####################
+	# - Preview
+	####################
+	@events.on_value_changed(
+		prop_name='preview_active',
+		run_on_init=True,
+		props={'preview_active'},
+		managed_objs={'mesh'},
+	)
+	def on_preview_changed(self, props, managed_objs) -> None:
+		mesh = managed_objs['mesh']
+
+		# Push Preview State to Managed Mesh
+		if props['preview_active']:
+			mesh.show_preview()
+		else:
+			mesh.hide_preview()
+
+	@events.on_value_changed(
+		## Trigger
+		socket_name={'Center', 'Size'},
+		run_on_init=True,
+		# Loaded
+		input_sockets={'Center', 'Size'},
+		managed_objs={'mesh', 'modifier'},
+		unit_systems={'BlenderUnits': ct.UNITS_BLENDER},
+		scale_input_sockets={
+			'Center': 'BlenderUnits',
+		},
+	)
+	def on_input_changed(
+		self,
+		managed_objs,
+		input_sockets,
+		unit_systems,
+	):
+		mesh = managed_objs['mesh']
+		modifier = managed_objs['modifier']
+		center = input_sockets['Center']
+		size = input_sockets['Size']
+		unit_system = unit_systems['BlenderUnits']
+
+		# Push Loose Input Values to GeoNodes Modifier
+		modifier.bl_modifier(
+			mesh.bl_object(location=center),
+			'NODES',
+			{
+				'node_group': import_geonodes(GeoNodes.SimulationSimDomain),
+				'inputs': {'Size': size},
+				'unit_system': unit_system,
+			},
+		)
+

 ####################
 # - Blender Registration
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/init.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/init.py
@ -2,7 +2,7 @@ from . import (
 	# astigmatic_gaussian_beam_source,
 	# gaussian_beam_source,
 	# plane_wave_source,
-	# point_dipole_source,
+	point_dipole_source,
 	temporal_shapes,
 	# tfsf_source,
 	# uniform_current_source,
@ -10,18 +10,18 @@ from . import (

 BL_REGISTER = [
 	*temporal_shapes.BL_REGISTER,
-	#*point_dipole_source.BL_REGISTER,
+	*point_dipole_source.BL_REGISTER,
 	# *uniform_current_source.BL_REGISTER,
-	#*plane_wave_source.BL_REGISTER,
+	# *plane_wave_source.BL_REGISTER,
 	# *gaussian_beam_source.BL_REGISTER,
 	# *astigmatic_gaussian_beam_source.BL_REGISTER,
 	# *tfsf_source.BL_REGISTER,
 ]
 BL_NODES = {
 	**temporal_shapes.BL_NODES,
-	#**point_dipole_source.BL_NODES,
+	**point_dipole_source.BL_NODES,
 	# **uniform_current_source.BL_NODES,
-	#**plane_wave_source.BL_NODES,
+	# **plane_wave_source.BL_NODES,
 	# **gaussian_beam_source.BL_NODES,
 	# **astigmatic_gaussian_beam_source.BL_NODES,
 	# **tfsf_source.BL_NODES,
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/point_dipole_source.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/point_dipole_source.py
@ -1,64 +1,62 @@
 import typing as typ

 import bpy
+import sympy as sp
 import tidy3d as td

+from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
+from blender_maxwell.utils import bl_cache, logger
+from blender_maxwell.utils import extra_sympy_units as spux
+
 from ... import contracts as ct
 from ... import managed_objs, sockets
 from .. import base, events

+log = logger.get(__name__)
+

 class PointDipoleSourceNode(base.MaxwellSimNode):
 	node_type = ct.NodeType.PointDipoleSource
 	bl_label = 'Point Dipole Source'
+	use_sim_node_name = True

 	####################
 	# - Sockets
 	####################
-	input_sockets = {
+	input_sockets: typ.ClassVar = {
 		'Temporal Shape': sockets.MaxwellTemporalShapeSocketDef(),
-		'Center': sockets.PhysicalPoint3DSocketDef(),
+		'Center': sockets.ExprSocketDef(
+			shape=(3,),
+			mathtype=spux.MathType.Real,
+			physical_type=spux.PhysicalType.Length,
+			default_value=sp.Matrix([0, 0, 0]),
+		),
 		'Interpolate': sockets.BoolSocketDef(
 			default_value=True,
 		),
 	}
-	output_sockets = {
+	output_sockets: typ.ClassVar = {
 		'Source': sockets.MaxwellSourceSocketDef(),
 	}

-	managed_obj_types = {
+	managed_obj_types: typ.ClassVar = {
 		'mesh': managed_objs.ManagedBLMesh,
+		'modifier': managed_objs.ManagedBLModifier,
 	}

 	####################
 	# - Properties
 	####################
-	pol_axis: bpy.props.EnumProperty(
-		name='Polarization Axis',
-		description='Polarization Axis',
-		items=[
-			('EX', 'Ex', 'Electric field in x-dir'),
-			('EY', 'Ey', 'Electric field in y-dir'),
-			('EZ', 'Ez', 'Electric field in z-dir'),
-		],
-		default='EX',
-		update=(lambda self, context: self.on_prop_changed('pol_axis', context)),
-	)
+	pol_axis: ct.SimSpaceAxis = bl_cache.BLField(ct.SimSpaceAxis.X, prop_ui=True)

 	####################
 	# - UI
 	####################
-	def draw_props(self, context, layout):
-		split = layout.split(factor=0.6)
-
-		col = split.column()
-		col.label(text='Pol Axis')
-
-		col = split.column()
-		col.prop(self, 'pol_axis', text='')
+	def draw_props(self, _: bpy.types.Context, layout: bpy.types.UILayout):
+		layout.prop(self, self.blfields['pol_axis'], expand=True)

 	####################
-	# - Output Socket Computation
+	# - Outputs
 	####################
 	@events.computes_output_socket(
 		'Source',
@ -76,9 +74,9 @@ class PointDipoleSourceNode(base.MaxwellSimNode):
 		unit_systems: dict,
 	) -> td.PointDipole:
 		pol_axis = {
-			'EX': 'Ex',
-			'EY': 'Ey',
-			'EZ': 'Ez',
+			ct.SimSpaceAxis.X: 'Ex',
+			ct.SimSpaceAxis.Y: 'Ey',
+			ct.SimSpaceAxis.Z: 'Ez',
 		}[props['pol_axis']]

 		return td.PointDipole(
@ -88,39 +86,59 @@ class PointDipoleSourceNode(base.MaxwellSimNode):
 			polarization=pol_axis,
 		)

-	#####################
-	## - Preview
-	#####################
-	# @events.on_value_changed(
-	# socket_name='Center',
-	# input_sockets={'Center'},
-	# managed_objs={'sphere_empty'},
-	# )
-	# def on_value_changed__center(
-	# self,
-	# input_sockets: dict,
-	# managed_objs: dict[str, ct.schemas.ManagedObj],
-	# ):
-	# _center = input_sockets['Center']
-	# center = tuple(spu.convert_to(_center, spu.um) / spu.um)
-	# ## TODO: Preview unit system?? Presume um for now
+	####################
+	# - Preview
+	####################
+	@events.on_value_changed(
+		prop_name='preview_active',
+		run_on_init=True,
+		props={'preview_active'},
+		managed_objs={'mesh'},
+	)
+	def on_preview_changed(self, props, managed_objs) -> None:
+		"""Enables/disables previewing of the GeoNodes-driven mesh, regardless of whether a particular GeoNodes tree is chosen."""
+		mesh = managed_objs['mesh']

-	# mobj = managed_objs['sphere_empty']
-	# bl_object = mobj.bl_object('EMPTY')
-	# bl_object.location = center  # tuple([float(el) for el in center])
+		# Push Preview State to Managed Mesh
+		if props['preview_active']:
+			mesh.show_preview()
+		else:
+			mesh.hide_preview()

-	# @events.on_show_preview(
-	# managed_objs={'sphere_empty'},
-	# )
-	# def on_show_preview(
-	# self,
-	# managed_objs: dict[str, ct.schemas.ManagedObj],
-	# ):
-	# managed_objs['sphere_empty'].show_preview(
-	# 'EMPTY',
-	# empty_display_type='SPHERE',
-	# )
-	# managed_objs['sphere_empty'].bl_object('EMPTY').empty_display_size = 0.2
+	@events.on_value_changed(
+		socket_name={'Center'},
+		prop_name='pol_axis',
+		run_on_init=True,
+		# Pass Data
+		managed_objs={'mesh', 'modifier'},
+		props={'pol_axis'},
+		input_sockets={'Center'},
+		unit_systems={'BlenderUnits': ct.UNITS_BLENDER},
+		scale_input_sockets={'Center': 'BlenderUnits'},
+	)
+	def on_inputs_changed(
+		self, managed_objs, props, input_sockets, unit_systems
+	) -> None:
+		mesh = managed_objs['mesh']
+		modifier = managed_objs['modifier']
+		center = input_sockets['Center']
+		unit_system = unit_systems['BlenderUnits']
+		axis = {
+			ct.SimSpaceAxis.X: 0,
+			ct.SimSpaceAxis.Y: 1,
+			ct.SimSpaceAxis.Z: 2,
+		}[props['pol_axis']]
+
+		# Push Loose Input Values to GeoNodes Modifier
+		modifier.bl_modifier(
+			mesh.bl_object(location=center),
+			'NODES',
+			{
+				'node_group': import_geonodes(GeoNodes.SourcePointDipole),
+				'inputs': {'Axis': axis},
+				'unit_system': unit_system,
+			},
+		)


 ####################
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/temporal_shapes/init.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/temporal_shapes/init.py
@ -1,13 +1,13 @@
 # from . import expr_temporal_shape, pulse_temporal_shape, wave_temporal_shape
-from . import pulse_temporal_shape
+from . import pulse_temporal_shape, wave_temporal_shape

 BL_REGISTER = [
 	*pulse_temporal_shape.BL_REGISTER,
-	# *wave_temporal_shape.BL_REGISTER,
+	*wave_temporal_shape.BL_REGISTER,
 	# *expr_temporal_shape.BL_REGISTER,
 ]
 BL_NODES = {
 	**pulse_temporal_shape.BL_NODES,
-	# **wave_temporal_shape.BL_NODES,
+	**wave_temporal_shape.BL_NODES,
 	# **expr_temporal_shape.BL_NODES,
 }
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/temporal_shapes/pulse_temporal_shape.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/temporal_shapes/pulse_temporal_shape.py
@ -4,7 +4,6 @@ import functools
 import typing as typ

 import bpy
-import jax.numpy as jnp
 import sympy as sp
 import sympy.physics.units as spu
 import tidy3d as td
@ -16,38 +15,6 @@ from .... import managed_objs, sockets
 from ... import base, events


-def _manual_amp_time(self, time: float) -> complex:
-	"""Copied implementation of `pulse.amp_time` for `tidy3d` temporal shapes, which replaces use of `numpy` with `jax.numpy` for `jit`-ability.
-
-	Since the function is detached from the method, `self` is not implicitly available. It should be pre-defined from a real source time object using `functools.partial`, before `jax.jit`ing.
-
-	## License
-	**This function is directly copied from `tidy3d`**.
-	As such, it should be considered available under the `tidy3d` license (as of writing, LGPL 2.1): <https://github.com/flexcompute/tidy3d/blob/develop/LICENSE>
-
-	## Reference
-	Permalink to GitHub source code: <https://github.com/flexcompute/tidy3d/blob/3ee34904eb6687a86a5fb3f4ed6d3295c228cd83/tidy3d/components/source.py#L143C1-L163C25>
-	"""
-	twidth = 1.0 / (2 * jnp.pi * self.fwidth)
-	omega0 = 2 * jnp.pi * self.freq0
-	time_shifted = time - self.offset * twidth
-
-	offset = jnp.exp(1j * self.phase)
-	oscillation = jnp.exp(-1j * omega0 * time)
-	amp = jnp.exp(-(time_shifted**2) / 2 / twidth**2) * self.amplitude
-
-	pulse_amp = offset * oscillation * amp
-
-	# subtract out DC component
-	if self.remove_dc_component:
-		pulse_amp = pulse_amp * (1j + time_shifted / twidth**2 / omega0)
-	else:
-		# 1j to make it agree in large omega0 limit
-		pulse_amp = pulse_amp * 1j
-
-	return pulse_amp
-
-
 class PulseTemporalShapeNode(base.MaxwellSimNode):
 	node_type = ct.NodeType.PulseTemporalShape
 	bl_label = 'Gaussian Pulse Temporal Shape'
@ -145,7 +112,7 @@ class PulseTemporalShapeNode(base.MaxwellSimNode):
 	)
 	def compute_time_to_efield_lazy(self, output_sockets) -> td.GaussianPulse:
 		temporal_shape = output_sockets['Temporal Shape']
-		jax_amp_time = functools.partial(_manual_amp_time, temporal_shape)
+		jax_amp_time = functools.partial(ct.manual_amp_time, temporal_shape)

 		## TODO: Don't just partial() it up, do it property in the ParamsFlow!
 		## -> Right now it's recompiled every time.
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/temporal_shapes/wave_temporal_shape.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/sources/temporal_shapes/wave_temporal_shape.py
@ -1,75 +1,156 @@
+"""Implements the `WaveTemporalShapeNode`."""
+
+import functools
+import typing as typ
+
+import bpy
+import sympy as sp
 import sympy.physics.units as spu
 import tidy3d as td

-from .... import contracts, sockets
+from blender_maxwell.utils import extra_sympy_units as spux
+
+from .... import contracts as ct
+from .... import managed_objs, sockets
 from ... import base, events


-class ContinuousWaveTemporalShapeNode(base.MaxwellSimTreeNode):
-	node_type = contracts.NodeType.ContinuousWaveTemporalShape
-
+class WaveTemporalShapeNode(base.MaxwellSimNode):
+	node_type = ct.NodeType.WaveTemporalShape
 	bl_label = 'Continuous Wave Temporal Shape'
-	# bl_icon = ...

 	####################
 	# - Sockets
 	####################
-	input_sockets = {
-		# "amplitude": sockets.RealNumberSocketDef(
-		# label="Temporal Shape",
-		# ),  ## Should have a unit of some kind...
-		'phase': sockets.PhysicalAngleSocketDef(
-			label='Phase',
+	input_sockets: typ.ClassVar = {
+		'max E': sockets.ExprSocketDef(
+			mathtype=spux.MathType.Complex,
+			physical_type=spux.PhysicalType.EField,
+			default_value=1 + 0j,
 		),
-		'freq_center': sockets.PhysicalFreqSocketDef(
-			label='Freq Center',
+		'μ Freq': sockets.ExprSocketDef(
+			physical_type=spux.PhysicalType.Freq,
+			default_unit=spux.THz,
+			default_value=500,
 		),
-		'freq_std': sockets.PhysicalFreqSocketDef(
-			label='Freq STD',
-		),
-		'time_delay_rel_ang_freq': sockets.RealNumberSocketDef(
-			label='Time Delay rel. Ang. Freq',
-			default_value=5.0,
+		'σ Freq': sockets.ExprSocketDef(
+			physical_type=spux.PhysicalType.Freq,
+			default_unit=spux.THz,
+			default_value=200,
 		),
+		'Offset Time': sockets.ExprSocketDef(default_value=5, abs_min=2.5),
 	}
-	output_sockets = {
-		'temporal_shape': sockets.MaxwellTemporalShapeSocketDef(
-			label='Temporal Shape',
-		),
+	output_sockets: typ.ClassVar = {
+		'Temporal Shape': sockets.MaxwellTemporalShapeSocketDef(),
+		'E(t)': sockets.ExprSocketDef(active_kind=ct.FlowKind.Array),
+	}
+
+	managed_obj_types: typ.ClassVar = {
+		'plot': managed_objs.ManagedBLImage,
 	}

 	####################
-	# - Output Socket Computation
+	# - UI
 	####################
-	@events.computes_output_socket('temporal_shape')
-	def compute_source(self: contracts.NodeTypeProtocol) -> td.PointDipole:
-		_phase = self.compute_input('phase')
-		_freq_center = self.compute_input('freq_center')
-		_freq_std = self.compute_input('freq_std')
-		time_delay_rel_ang_freq = self.compute_input('time_delay_rel_ang_freq')
+	def draw_info(self, _: bpy.types.Context, layout: bpy.types.UILayout) -> None:
+		box = layout.box()
+		row = box.row()
+		row.alignment = 'CENTER'
+		row.label(text='Parameter Scale')

-		cheating_amplitude = 1.0
-		phase = spu.convert_to(_phase, spu.radian) / spu.radian
-		freq_center = spu.convert_to(_freq_center, spu.hertz) / spu.hertz
-		freq_std = spu.convert_to(_freq_std, spu.hertz) / spu.hertz
+		# Split
+		split = box.split(factor=0.3, align=False)

+		## LHS: Parameter Names
+		col = split.column()
+		col.alignment = 'RIGHT'
+		col.label(text='Off t:')
+
+		## RHS: Parameter Units
+		col = split.column()
+		col.label(text='1 / 2π·σ(𝑓)')
+
+	####################
+	# - FlowKind: Value
+	####################
+	@events.computes_output_socket(
+		'Temporal Shape',
+		input_sockets={
+			'max E',
+			'μ Freq',
+			'σ Freq',
+			'Offset Time',
+		},
+		unit_systems={'Tidy3DUnits': ct.UNITS_TIDY3D},
+		scale_input_sockets={
+			'max E': 'Tidy3DUnits',
+			'μ Freq': 'Tidy3DUnits',
+			'σ Freq': 'Tidy3DUnits',
+		},
+	)
+	def compute_temporal_shape(self, input_sockets, unit_systems) -> td.GaussianPulse:
 		return td.ContinuousWave(
-			amplitude=cheating_amplitude,
-			phase=phase,
-			freq0=freq_center,
-			fwidth=freq_std,
-			offset=time_delay_rel_ang_freq,
+			amplitude=sp.re(input_sockets['max E']),
+			phase=sp.im(input_sockets['max E']),
+			freq0=input_sockets['μ Freq'],
+			fwidth=input_sockets['σ Freq'],
+			offset=input_sockets['Offset Time'],
 		)

+	####################
+	# - FlowKind: LazyValueFunc / Info / Params
+	####################
+	@events.computes_output_socket(
+		'E(t)',
+		kind=ct.FlowKind.LazyValueFunc,
+		output_sockets={'Temporal Shape'},
+	)
+	def compute_time_to_efield_lazy(self, output_sockets) -> td.GaussianPulse:
+		temporal_shape = output_sockets['Temporal Shape']
+		jax_amp_time = functools.partial(ct.manual_amp_time, temporal_shape)
+
+		## TODO: Don't just partial() it up, do it property in the ParamsFlow!
+		## -> Right now it's recompiled every time.
+
+		return ct.LazyValueFuncFlow(
+			func=jax_amp_time,
+			func_args=[spux.PhysicalType.Time],
+			supports_jax=True,
+		)
+
+	@events.computes_output_socket(
+		'E(t)',
+		kind=ct.FlowKind.Info,
+	)
+	def compute_time_to_efield_info(self) -> td.GaussianPulse:
+		return ct.InfoFlow(
+			dim_names=['t'],
+			dim_idx={
+				't': ct.LazyArrayRangeFlow(
+					start=sp.S(0), stop=sp.oo, steps=0, unit=spu.second
+				)
+			},
+			output_name='E',
+			output_shape=None,
+			output_mathtype=spux.MathType.Complex,
+			output_unit=spu.volt / spu.um,
+		)
+
+	@events.computes_output_socket(
+		'E(t)',
+		kind=ct.FlowKind.Params,
+	)
+	def compute_time_to_efield_params(self) -> td.GaussianPulse:
+		sym_time = sp.Symbol('t', real=True, nonnegative=True)
+		return ct.ParamsFlow(func_args=[sym_time], symbols={sym_time})
+

 ####################
 # - Blender Registration
 ####################
 BL_REGISTER = [
-	ContinuousWaveTemporalShapeNode,
+	WaveTemporalShapeNode,
 ]
 BL_NODES = {
-	contracts.NodeType.ContinuousWaveTemporalShape: (
-		contracts.NodeCategory.MAXWELLSIM_SOURCES_TEMPORALSHAPES
-	)
+	ct.NodeType.WaveTemporalShape: (ct.NodeCategory.MAXWELLSIM_SOURCES_TEMPORALSHAPES)
 }
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/geonodes_structure.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/geonodes_structure.py
@ -1,8 +1,12 @@
 import typing as typ

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

-from blender_maxwell.utils import bl_cache, logger
+from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
+from blender_maxwell.utils import extra_sympy_units as spux
+from blender_maxwell.utils import logger

 from ... import bl_socket_map, managed_objs, sockets
 from ... import contracts as ct
@ -22,7 +26,13 @@ class GeoNodesStructureNode(base.MaxwellSimNode):
 	input_sockets: typ.ClassVar = {
 		'GeoNodes': sockets.BlenderGeoNodesSocketDef(),
 		'Medium': sockets.MaxwellMediumSocketDef(),
-		'Center': sockets.PhysicalPoint3DSocketDef(),
+		'Center': sockets.ExprSocketDef(
+			shape=(3,),
+			mathtype=spux.MathType.Real,
+			physical_type=spux.PhysicalType.Length,
+			default_unit=spu.micrometer,
+			default_value=sp.Matrix([0, 0, 0]),
+		),
 	}
 	output_sockets: typ.ClassVar = {
 		'Structure': sockets.MaxwellStructureSocketDef(),
@ -34,7 +44,7 @@ class GeoNodesStructureNode(base.MaxwellSimNode):
 	}

 	####################
-	# - Output
+	# - Outputs
 	####################
 	@events.computes_output_socket(
 		'Structure',
@ -43,14 +53,10 @@ class GeoNodesStructureNode(base.MaxwellSimNode):
 	)
 	def compute_structure(
 		self,
-		input_sockets: dict,
-		managed_objs: dict,
+		input_sockets,
+		managed_objs,
 	) -> td.Structure:
 		"""Computes a triangle-mesh based Tidy3D structure, by manually copying mesh data from Blender to a `td.TriangleMesh`."""
-		# Simulate Input Value Change
-		## This ensures that the mesh has been re-computed.
-		self.on_input_socket_changed()
-
 		## TODO: mesh_as_arrays might not take the Center into account.
 		## - Alternatively, Tidy3D might have a way to transform?
 		mesh_as_arrays = managed_objs['mesh'].mesh_as_arrays
@ -68,20 +74,12 @@ class GeoNodesStructureNode(base.MaxwellSimNode):
 	@events.on_value_changed(
 		prop_name='preview_active',
 		props={'preview_active'},
-		input_sockets={'Center'},
 		managed_objs={'mesh'},
 	)
-	def on_preview_changed(self, props, input_sockets) -> None:
+	def on_preview_changed(self, props) -> None:
 		"""Enables/disables previewing of the GeoNodes-driven mesh, regardless of whether a particular GeoNodes tree is chosen."""
 		mesh = managed_objs['mesh']

-		# No Mesh: Create Empty Object
-		## Ensures that when there is mesh data, it'll be correctly previewed.
-		## Bit of a workaround - the idea is usually to make the MObj as needed.
-		if not mesh.exists:
-			center = input_sockets['Center']
-			_ = mesh.bl_object(location=center)
-
 		# Push Preview State to Managed Mesh
 		if props['preview_active']:
 			mesh.show_preview()
@ -139,8 +137,8 @@ class GeoNodesStructureNode(base.MaxwellSimNode):
 	)
 	def on_input_changed(
 		self,
-		managed_objs: dict,
-		input_sockets: dict,
+		managed_objs,
+		input_sockets,
 	) -> None:
 		"""Declares new loose input sockets in response to a new GeoNodes tree (if any)."""
 		geonodes = input_sockets['GeoNodes']
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/box_structure.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/box_structure.py
@ -5,11 +5,15 @@ import sympy.physics.units as spu
 import tidy3d as td

 from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
+from blender_maxwell.utils import extra_sympy_units as spux
+from blender_maxwell.utils import logger

 from .... import contracts as ct
 from .... import managed_objs, sockets
 from ... import base, events

+log = logger.get(__name__)
+

 class BoxStructureNode(base.MaxwellSimNode):
 	node_type = ct.NodeType.BoxStructure
@ -21,9 +25,20 @@ class BoxStructureNode(base.MaxwellSimNode):
 	####################
 	input_sockets: typ.ClassVar = {
 		'Medium': sockets.MaxwellMediumSocketDef(),
-		'Center': sockets.PhysicalPoint3DSocketDef(),
-		'Size': sockets.PhysicalSize3DSocketDef(
-			default_value=sp.Matrix([500, 500, 500]) * spu.nm
+		'Center': sockets.ExprSocketDef(
+			shape=(3,),
+			mathtype=spux.MathType.Real,
+			physical_type=spux.PhysicalType.Length,
+			default_unit=spu.micrometer,
+			default_value=sp.Matrix([0, 0, 0]),
+		),
+		'Size': sockets.ExprSocketDef(
+			shape=(3,),
+			mathtype=spux.MathType.Real,
+			physical_type=spux.PhysicalType.Length,
+			default_unit=spu.nanometer,
+			default_value=sp.Matrix([500, 500, 500]),
+			abs_min=0.001,
 		),
 	}
 	output_sockets: typ.ClassVar = {
@ -36,7 +51,7 @@ class BoxStructureNode(base.MaxwellSimNode):
 	}

 	####################
-	# - Event Methods
+	# - Outputs
 	####################
 	@events.computes_output_socket(
 		'Structure',
@ -47,7 +62,7 @@ class BoxStructureNode(base.MaxwellSimNode):
 			'Size': 'Tidy3DUnits',
 		},
 	)
-	def compute_structure(self, input_sockets: dict, unit_systems: dict) -> td.Box:
+	def compute_structure(self, input_sockets, unit_systems) -> td.Box:
 		return td.Structure(
 			geometry=td.Box(
 				center=input_sockets['Center'],
@ -56,11 +71,27 @@ class BoxStructureNode(base.MaxwellSimNode):
 			medium=input_sockets['Medium'],
 		)

+	####################
+	# - Preview
+	####################
 	@events.on_value_changed(
-		socket_name={'Center', 'Size'},
 		prop_name='preview_active',
 		run_on_init=True,
 		props={'preview_active'},
+		managed_objs={'mesh'},
+	)
+	def on_preview_changed(self, props, managed_objs) -> None:
+		mesh = managed_objs['mesh']
+
+		# Push Preview State to Managed Mesh
+		if props['preview_active']:
+			mesh.show_preview()
+		else:
+			mesh.hide_preview()
+
+	@events.on_value_changed(
+		socket_name={'Center', 'Size'},
+		run_on_init=True,
 		input_sockets={'Center', 'Size'},
 		managed_objs={'mesh', 'modifier'},
 		unit_systems={'BlenderUnits': ct.UNITS_BLENDER},
@ -70,26 +101,26 @@ class BoxStructureNode(base.MaxwellSimNode):
 	)
 	def on_inputs_changed(
 		self,
-		props: dict,
-		managed_objs: dict,
-		input_sockets: dict,
-		unit_systems: dict,
+		managed_objs,
+		input_sockets,
+		unit_systems,
 	):
-		# Push Input Values to GeoNodes Modifier
-		managed_objs['modifier'].bl_modifier(
-			managed_objs['mesh'].bl_object(location=input_sockets['Center']),
+		mesh = managed_objs['mesh']
+		modifier = managed_objs['modifier']
+		center = input_sockets['Center']
+		size = input_sockets['Size']
+		unit_system = unit_systems['BlenderUnits']
+
+		# Push Loose Input Values to GeoNodes Modifier
+		modifier.bl_modifier(
+			mesh.bl_object(location=center),
 			'NODES',
 			{
 				'node_group': import_geonodes(GeoNodes.StructurePrimitiveBox),
-				'unit_system': unit_systems['BlenderUnits'],
-				'inputs': {
-					'Size': input_sockets['Size'],
-				},
+				'inputs': {'Size': size},
+				'unit_system': unit_system,
 			},
 		)
-		# Push Preview State
-		if props['preview_active']:
-			managed_objs['mesh'].show_preview()


 ####################
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/sphere_structure.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/sphere_structure.py
@ -1,14 +1,19 @@
 import typing as typ

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

 from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
+from blender_maxwell.utils import extra_sympy_units as spux
+from blender_maxwell.utils import logger

 from .... import contracts as ct
 from .... import managed_objs, sockets
 from ... import base, events

+log = logger.get(__name__)
+

 class SphereStructureNode(base.MaxwellSimNode):
 	node_type = ct.NodeType.SphereStructure
@ -20,9 +25,17 @@ class SphereStructureNode(base.MaxwellSimNode):
 	####################
 	input_sockets: typ.ClassVar = {
 		'Medium': sockets.MaxwellMediumSocketDef(),
-		'Center': sockets.PhysicalPoint3DSocketDef(),
-		'Radius': sockets.PhysicalLengthSocketDef(
-			default_value=150 * spu.nm,
+		'Center': sockets.ExprSocketDef(
+			shape=(3,),
+			mathtype=spux.MathType.Real,
+			physical_type=spux.PhysicalType.Length,
+			default_unit=spu.micrometer,
+			default_value=sp.Matrix([0, 0, 0]),
+		),
+		'Radius': sockets.ExprSocketDef(
+			physical_type=spux.PhysicalType.Length,
+			default_unit=spu.nanometer,
+			default_value=150,
 		),
 	}
 	output_sockets: typ.ClassVar = {
@ -35,7 +48,7 @@ class SphereStructureNode(base.MaxwellSimNode):
 	}

 	####################
-	# - Output Socket Computation
+	# - Outputs
 	####################
 	@events.computes_output_socket(
 		'Structure',
@ -46,7 +59,7 @@ class SphereStructureNode(base.MaxwellSimNode):
 			'Radius': 'Tidy3DUnits',
 		},
 	)
-	def compute_structure(self, input_sockets: dict) -> td.Box:
+	def compute_structure(self, input_sockets, unit_systems) -> td.Box:
 		return td.Structure(
 			geometry=td.Sphere(
 				radius=input_sockets['Radius'],
@ -56,43 +69,55 @@ class SphereStructureNode(base.MaxwellSimNode):
 		)

 	####################
-	# - Preview - Changes to Input Sockets
+	# - Preview
 	####################
 	@events.on_value_changed(
-		socket_name={'Center', 'Radius'},
 		prop_name='preview_active',
 		run_on_init=True,
 		props={'preview_active'},
+		managed_objs={'mesh'},
+	)
+	def on_preview_changed(self, props, managed_objs) -> None:
+		mesh = managed_objs['mesh']
+
+		# Push Preview State to Managed Mesh
+		if props['preview_active']:
+			mesh.show_preview()
+		else:
+			mesh.hide_preview()
+
+	@events.on_value_changed(
+		socket_name={'Center', 'Radius'},
+		run_on_init=True,
 		input_sockets={'Center', 'Radius'},
 		managed_objs={'mesh', 'modifier'},
 		unit_systems={'BlenderUnits': ct.UNITS_BLENDER},
 		scale_input_sockets={
-			'Center': 'Tidy3DUnits',
-			'Radius': 'Tidy3DUnits',
+			'Center': 'BlenderUnits',
 		},
 	)
 	def on_inputs_changed(
 		self,
-		props: dict,
-		managed_objs: dict,
-		input_sockets: dict,
-		unit_systems: dict,
+		managed_objs,
+		input_sockets,
+		unit_systems,
 	):
-		# Push Input Values to GeoNodes Modifier
-		managed_objs['modifier'].bl_modifier(
-			managed_objs['mesh'].bl_object(location=input_sockets['Center']),
+		mesh = managed_objs['mesh']
+		modifier = managed_objs['modifier']
+		center = input_sockets['Center']
+		radius = input_sockets['Radius']
+		unit_system = unit_systems['BlenderUnits']
+
+		# Push Loose Input Values to GeoNodes Modifier
+		modifier.bl_modifier(
+			mesh.bl_object(location=center),
 			'NODES',
 			{
 				'node_group': import_geonodes(GeoNodes.StructurePrimitiveSphere),
-				'unit_system': unit_systems['BlenderUnits'],
-				'inputs': {
-					'Radius': input_sockets['Radius'],
-				},
+				'inputs': {'Radius': radius},
+				'unit_system': unit_system,
 			},
 		)
-		# Push Preview State
-		if props['preview_active']:
-			managed_objs['mesh'].show_preview()


 ####################
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/utilities/math.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/utilities/math.py
@ -1,5 +0,0 @@
-####################
-# - Blender Registration
-####################
-BL_REGISTER = []
-BL_NODES = {}
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/utilities/separate.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/utilities/separate.py
@ -1,80 +0,0 @@
-import scipy as sc
-import sympy as sp
-import sympy.physics.units as spu
-
-from .... import contracts, sockets
-from ... import base, events
-
-
-class WaveConverterNode(base.MaxwellSimTreeNode):
-	node_type = contracts.NodeType.WaveConverter
-	bl_label = 'Wave Converter'
-	# bl_icon = ...
-
-	####################
-	# - Sockets
-	####################
-	input_sockets = {}
-	input_socket_sets = {
-		'freq_to_vacwl': {
-			'freq': sockets.PhysicalFreqSocketDef(
-				label='Freq',
-			),
-		},
-		'vacwl_to_freq': {
-			'vacwl': sockets.PhysicalVacWLSocketDef(
-				label='Vac WL',
-			),
-		},
-	}
-	output_sockets = {}
-	output_socket_sets = {
-		'freq_to_vacwl': {
-			'vacwl': sockets.PhysicalVacWLSocketDef(
-				label='Vac WL',
-			),
-		},
-		'vacwl_to_freq': {
-			'freq': sockets.PhysicalFreqSocketDef(
-				label='Freq',
-			),
-		},
-	}
-
-	####################
-	# - Output Socket Computation
-	####################
-	@events.computes_output_socket('freq')
-	def compute_freq(self: contracts.NodeTypeProtocol) -> sp.Expr:
-		vac_speed_of_light = sc.constants.speed_of_light * spu.meter / spu.second
-
-		vacwl = self.compute_input('vacwl')
-
-		return spu.convert_to(
-			vac_speed_of_light / vacwl,
-			spu.hertz,
-		)
-
-	@events.computes_output_socket('vacwl')
-	def compute_vacwl(self: contracts.NodeTypeProtocol) -> sp.Expr:
-		vac_speed_of_light = sc.constants.speed_of_light * spu.meter / spu.second
-
-		freq = self.compute_input('freq')
-
-		return spu.convert_to(
-			vac_speed_of_light / freq,
-			spu.meter,
-		)
-
-
-####################
-# - Blender Registration
-####################
-BL_REGISTER = [
-	WaveConverterNode,
-]
-BL_NODES = {
-	contracts.NodeType.WaveConverter: (
-		contracts.NodeCategory.MAXWELLSIM_UTILITIES_CONVERTERS
-	)
-}
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/base.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/base.py
@ -38,6 +38,14 @@ class SocketDef(pyd.BaseModel, abc.ABC):
 		"""
 		bl_socket.reset_instance_id()

+	def postinit(self, bl_socket: bpy.types.NodeSocket) -> None:
+		"""Pre-initialize a real Blender node socket from this socket definition.
+
+		Parameters:
+			bl_socket: The Blender node socket to alter using data from this SocketDef.
+		"""
+		bl_socket.initializing = False
+
 	@abc.abstractmethod
 	def init(self, bl_socket: bpy.types.NodeSocket) -> None:
 		"""Initializes a real Blender node socket from this socket definition.
@ -195,6 +203,9 @@ class MaxwellSimSocket(bpy.types.NodeSocket):
 		## Identifiers
 		cls.bl_idname: str = str(cls.socket_type.value)
 		cls.set_prop('instance_id', bpy.props.StringProperty, no_update=True)
+		cls.set_prop(
+			'initializing', bpy.props.BoolProperty, default=True, no_update=True
+		)

 		## Special States
 		cls.set_prop('locked', bpy.props.BoolProperty, no_update=True, default=False)
@ -249,6 +260,10 @@ class MaxwellSimSocket(bpy.types.NodeSocket):
 		Attributes:
 			prop_name: The name of the property that was changed.
 		"""
+		## TODO: Evaluate this properly
+		if self.initializing:
+			return
+
 		if hasattr(self, prop_name):
 			# Invalidate UI BLField Caches
 			if prop_name in self.ui_blfields:
@ -537,7 +552,7 @@ class MaxwellSimSocket(bpy.types.NodeSocket):
 		msg = f'Socket {self.bl_label} {self.socket_type}): Tried to set "ct.FlowKind.Value", but socket does not define it'
 		raise NotImplementedError(msg)

-	# ValueArray
+	# Array
 	@property
 	def array(self) -> ct.ArrayFlow:
 		"""Throws a descriptive error.
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/maxwell/fdtd_sim.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/maxwell/fdtd_sim.py
@ -1,4 +1,3 @@
-
 from ... import contracts as ct
 from .. import base

--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/maxwell/structure.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/maxwell/structure.py
@ -1,4 +1,3 @@
-
 from ... import contracts as ct
 from .. import base

@ -18,7 +17,7 @@ class MaxwellStructureSocketDef(base.SocketDef):

 	def init(self, bl_socket: MaxwellStructureBLSocket) -> None:
 		if self.is_list:
-			bl_socket.active_kind = ct.FlowKind.ValueArray
+			bl_socket.active_kind = ct.FlowKind.Array


 ####################