578 lines
22 KiB
Markdown
578 lines
22 KiB
Markdown
# Working TODO
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- [ ] Wave Constant
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- Bounds
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- [ ] Boundary Conds
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- [ ] PML
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- [ ] PEC
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- [ ] PMC
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- [ ] Bloch
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- [ ] Absorbing
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- Sources
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- [ ] Temporal Shapes / Continuous Wave Temporal Shape
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- [ ] Temporal Shapes / Symbolic Temporal Shape
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- [ ] Plane Wave Source
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- [ ] TFSF Source
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- [ ] Gaussian Beam Source
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- [ ] Astig. Gauss Beam
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- Material Data Fitting
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- [ ] Data File Import
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- [ ] DataFit Medium
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- Monitors
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- [ ] EH Field
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- [ ] Power Flux
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- [ ] Permittivity
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- [ ] Diffraction
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- Structures
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- [ ] Cylinder
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- [ ] Cylinder Array
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- [ ] L-Cavity Cylinder
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- [ ] H-Cavity Cylinder
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- [ ] FCC Lattice
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- [ ] BCC Lattice
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- Sim Grid
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- [ ] Sim Grid
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- [ ] Auto
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- [ ] Manual
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- [ ] Uniform
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- [ ] Data
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- Mediums
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- [ ] PEC Medium
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- [ ] Isotropic Medium
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- [ ] Sellmeier Medium
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- [ ] Drude Medium
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- [ ] Debye Medium
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- [ ] Anisotropic Medium
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- Tidy3D
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- [ ] Exporter
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- [ ] Importer
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- Integration
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- [ ] Simulation and Analysis of Maxim's Cavity
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- Constants
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- [ ] Number Constant
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- [ ] Vector Constant
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- [ ] Physical Constant
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- [ ] Fix many problems by persisting `_enum_cb_cache` and `_str_cb_cache`.
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# Nodes
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## Analysis
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- [x] Extract
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- [ ] Implement "saved" state for info, and provide the user an indicator that state has been saved w/a button to reset (the state should also be reset when plugging a new data thing in)
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- [x] Viz
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- [ ] Implement Info-driven planar projection of pixels onto managed image empty.
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- [ ] Live-slice 2D field values onto user-controlled image empty from 2D field.
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- [ ] SocketType-based visualization support.
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- [ ] Pol SocketType: 2D elliptical visualization of Jones vectors.
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- [ ] Pol SocketType: 3D Poincare sphere visualization of Stokes vectors.
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- [x] Math / Map Math
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- [ ] Remove "By x" socket set let socket sets only be "Function"/"Expr"; then add a dynamic enum underneath to select "By x" based on data support.
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- [ ] Filter the operations based on data support, ex. use positive-definiteness to guide cholesky.
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- [ ] Implement support for additional symbols via `Expr`.
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- [x] Math / Filter Math
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- [ ] Math / Reduce Math
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- [x] Math / Operate Math
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- [ ] Remove two-layered dropdown; directly filter operations and use categories to seperate them.
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- [ ] Implement Expr socket advancements to make a better experience operating between random expression-like sockets.
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## Inputs
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- [x] Wave Constant
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- [ ] Fix the LazyValueRange (again!)
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- [ ] Document
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- [x] Scene
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- [ ] Implement export of scene time via. Blender unit system.
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- [ ] Implement optional scene-synced time exporting, so that the simulation definition and scene definition match for analysis needs.
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- [x] Constants / Expr Constant
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- See IDEAS.
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- [x] Constants / Number Constant
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- [ ] Fix non-integer sockets
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- [ ] Constants / Vector Constant
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- [ ] Constants / Physical Constant
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- [x] Constants / Scientific Constant
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- [ ] Nicer (boxed?) node information, maybe centered headers, in a box, etc. .
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- [x] Constants / Unit System Constant
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- [ ] Implement presets, including "Tidy3D" and "Blender", shown in the label row.
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- [x] Constants / Blender Constant
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- [ ] Fix it!
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- [ ] Web / Tidy3D Web Importer
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- [ ] Fix the check of folders, actually, just fix `tdcloud` in general!
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- [ ] Have a visual indicator for the download status of the currently selected task, as well as its data size.
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- [ ] If a task is "selected", lock the cloud task socket, so other tasks can't be selected. While that lock is active, expose a real "download" button. Also make the loose output socket and put out a `FlowPending` until the download is available.
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- [ ] A manual download button and seperate re-download button (maybe on the side, round reload boi).
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- [ ] An option to pack the data into the blend, with overview of how much data it will take (Base85/base64 has overhead).
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- [ ] Default limits for caching/packing.
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- [ ] Support importing batched simulations and outputting an `Array` of SimData.
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- [ ] File Import / Data File Import
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- [ ] Implement `FlowKind.LazyValueFunc` that plays the loading game.
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- [ ] Implement `FlowKind.Info` which lets the user describe the data being loaded, for proper further processing.
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- [ ] Implement unit system input to guide conversion from numpy data type.
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- [ ] Implement datatype dropdown to guide format from disk, prefilled to detected.
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- [ ] Implement `FlowKind.Array` that just runs the `LazyValueFunc` as usual.
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- [ ] Standardize 1D and 2D array loading/saving on numpy's savetxt with gzip enabled.
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- [x] File Import / Tidy3D File Import
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## Outputs
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- [x] Viewer
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- [ ] Consider a "debug" mode
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- [ ] Auto-enable plot when creating.
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- [ ] Test/support multiple viewers at the same time.
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- [ ] Pop-up w/multiline string as alternative to console print.
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- [ ] Handle per-tree viewers, so that switching trees doesn't "bleed" state from the old tree.
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- [ ] BUG: CTRL+SHIFT+CLICK not on a node shows an error; should just do nothing.
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- [x] Web Export / Tidy3D Web Exporter
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- [ ] Run checks on-demand, and require they be run before the sim can be uploaded. If the simulation changes, don't
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- [ ] Support doing checks in a seperate process.
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- [ ] We need better ways of doing checks before uploading, like for monitor data size. Maybe a SimInfo node?
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- [ ] Accept `Array` of simulations, and upload them as `Batch`.
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- [x] File Export / JSON File Export
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- [ ] Reevaluate its purpose.
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- [ ] File Export / Tidy3D File Export
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- [ ] Implement HDF-based export of Tidy3D-exported object (which includes ex. mesh data and such)
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- [ ] Also JSON (but indicate somehow that ex. mesh data doesn't come along for the ride).
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- [ ] File Export / Data File Export
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- [ ] Implement datatype dropdown to guide format on disk.
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- [ ] Implement unit system input to guide conversion to numpy data type.
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- [ ] Standardize 1D and 2D array loading/saving on numpy's savetxt with gzip enabled.
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## Sources
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- [x] Temporal Shapes / Gaussian Pulse Temporal Shape
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- [x] Temporal Shapes / Continuous Wave Temporal Shape
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- [ ] Temporal Shapes / Symbolic Temporal Shape
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- [ ] Specify a Sympy function to generate appropriate array based on
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- [ ] Temporal Shapes / Data Temporal Shape
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- [x] Point Dipole Source
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- [ ] Use a viz mesh, not empty (empty doesn't play well with alpha hashing).
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- [ ] Plane Wave Source
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- [ ] **IMPORTANT**: Fix the math so that an actually valid construction emerges!!
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- [ ] Uniform Current Source
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- [ ] TFSF Source
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- [ ] Gaussian Beam Source
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- [ ] Astigmatic Gaussian Beam Source
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- [ ] EH Array Source
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- [ ] EH Equiv Array Source
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## Mediums
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- [x] Library Medium
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- [ ] Implement frequency range output (listy), perhaps in the `InfoFlow` lane?
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- [ ] Implement dynamic label.
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- [ ] DataFit Medium
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- [ ] Implement by migrating the material data fitting logic from the `Tidy3D File Importer`, except now only accept a `Data` input socket, and rely on the `Data File Importer` to do the parsing into an acceptable `Data` socket format.
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- [ ] Save the result in the node, specifically in a property (serialized!) and lock the input graph while saved.
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- [ ] PEC Medium
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- [ ] Isotropic Medium
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- [ ] Anisotropic Medium
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- [ ] Sellmeier Medium
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- [ ] Drude Medium
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- [ ] Drude-Lorentz Medium
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- [ ] Debye Medium
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- [ ] Pole-Residue Medium
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- [ ] Non-Linearity / `chi_3` Susceptibility Non-Linearity
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- [ ] Non-Linearity / Two-Photon Absorption Non-Linearity
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- [ ] Non-Linearity / Kerr Non-Linearity
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## Structures
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- [ ] BLObject Structure
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- [x] GeoNodes Structure
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- [ ] Implement a panel system, to make GN trees with a ton of inputs (most of which are not usually needed) actually useful.
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- [ ] Propertly map / implement Enum input sockets to the GN group.
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- [ ] Primitive Structures / Line Structure
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- [ ] Primitive Structures / Plane Structure
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- [x] Primitive Structures / Box Structure
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- [x] Primitive Structures / Sphere Structure
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- [ ] Primitive Structures / Cylinder Structure
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- [ ] Primitive Structures / PolySlab Structure
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## Bounds
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- [x] Boundary Conds
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- [ ] Boundary Cond / PML Bound Face
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- [ ] Dropdown for "Normal" and "Stable"
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- [ ] Boundary Cond / PEC Bound Face
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- [ ] Boundary Cond / PMC Bound Face
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- [ ] Boundary Cond / Bloch Bound Face
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- [ ] Implement "simple" mode aka "periodic" mode in Tidy3D
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- [ ] Boundary Cond / Absorbing Bound Face
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## Monitors
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- [x] EH Field Monitor
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- [ ] Method of setting `inf` on dimensions - use a `ManyEnum` maybe to select the injection axis, and let that set the $0$.
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- [ ] Revamp the input parameters.
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- [x] Power Flux Monitor
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- [ ] Permittivity Monitor
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- [ ] Diffraction Monitor
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- [ ] Projected E/H Field Monitor / Cartesian Projected E/H Field Monitor
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- [ ] Use to implement the metalens: <https://docs.flexcompute.com/projects/tidy3d/en/latest/notebooks/Metalens.html>
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- [ ] Projected E/H Field Monitor / Angle Projected E/H Field Monitor
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- [ ] Projected E/H Field Monitor / K-Space Projected E/H Field Monitor
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## Simulations
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- [x] FDTDSim
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- [ ] By-Medium batching of Structures when building the td.Simulation object, which can have significant performance implications.
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- [x] Sim Domain
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- [ ] Sim Grid
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- [ ] Sim Grid Axes / Auto Sim Grid Axis
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- [ ] Sim Grid Axes / Manual Sim Grid Axis
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- [ ] Sim Grid Axes / Uniform Sim Grid Axis
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- [ ] Sim Grid Axes / Data Sim Grid Axis
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## Utilities
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- [ ] Separate
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- [ ] Use generic Expr socket mode to combine numerical types into either Expr or Data socket.
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- [x] Combine
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- [ ] Use generic Expr socket mode to combine numerical types into either Expr or Data socket.
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- [ ] Explicit about lower structures taking precedence.
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# GeoNodes
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- [ ] Tests / Monkey (suzanne deserves to be simulated, she may need manifolding up though :))
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- [ ] Tests / Wood Pile
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- [ ] Structures / Primitives / Line
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- [ ] Structures / Primitives / Plane
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- [x] Structures / Primitives / Box
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- [x] Structures / Primitives / Sphere
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- [ ] Structures / Primitives / Cylinder
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- [x] Structures / Primitives / Ring
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- [ ] Structures / Arrays / Cyl
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- [ ] Structures / Arrays / Box
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- [ ] Structures / Arrays / Sphere
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- [ ] Structures / Arrays / Cylinder
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- [x] Structures / Arrays / Ring
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- [ ] Structures / Hex Arrays / Cyl
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- [ ] Structures / Hex Arrays / Box
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- [ ] Structures / Hex Arrays / Sphere
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- [ ] Structures / Hex Arrays / Cylinder
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- [x] Structures / Hex Arrays / Ring
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- [ ] Structures / Cavity Arrays / L-Cavity Cylinder
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- [ ] Structures / Cavity Arrays / H-Cavity Cylinder
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- [ ] Structures / Lattice Arrays / FCC Sphere
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- [ ] Structures / Lattice Arrays / BCC Sphere
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# Benchmark / Example Sims
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- [ ] Research-Grade Experiment
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- Membrane 15nm thickness suspended in air
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- Square lattice of holes period 900nm (900nm between each hole, air inside holes)
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- Holes square radius 100nm
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- Square lattice
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- Analysis of transmission
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- Guided mode resonance
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- [ ] Tunable Chiral Metasurface <https://docs.flexcompute.com/projects/tidy3d/en/latest/notebooks/TunableChiralMetasurface.html>
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# Sockets
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## Basic
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- [x] Any
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- [x] Bool
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- [x] String
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- [x] File Path
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- [x] Color
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- [x] Expr
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- [ ] Implement node-driven support for dynamic symbols.
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- [ ] Implement compatibility with sockets that fundamentally do produce expressions, especially Physical sockets.
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## Number
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- [x] Integer
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- [x] Rational
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- [x] Real
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- [ ] Implement min/max for ex. 0..1 factor support.
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- [x] Complex
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## Blender
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- [x] Object
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- [ ] Implement default object name in SocketDef
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- [x] Collection
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- [ ] Implement default collection name in SocketDef
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- [x] Image
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- [ ] Implement default image name in SocketDef
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- [x] GeoNodes
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- [ ] Implement default SocketDef geonodes name
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- [x] Text
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- [ ] Implement default SocketDef object name
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## Maxwell
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- [x] Bound Conds
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- [ ] Bound Cond
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- [x] Medium
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- [ ] Medium Non-Linearity
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- [x] Source
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- [ ] Temporal Shape
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- [ ] Sane-default pulses for easy access.
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- [ ] Structure
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- [ ] Monitor
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- [ ] FDTD Sim
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- [ ] Sim Domain
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- [ ] Toggleable option to push-sync the simulation time duration to the scene end time (how to handle FPS vs time-step? Should we adjust the FPS such that there is one time step per frame, while keeping the definition of "second" aligned to the Blender unit system?)
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- [ ] Sim Grid
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- [ ] Sim Grid Axis
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- [ ] Simulation Data
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## Tidy3D
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- [x] Cloud Task
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- [ ] Move API checking out of the socket, and don't re-prompt for a key if the config file exists.
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- [ ] Remove the existing task selector when making a new task.
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- [ ] Implement "new folder" feature w/popup operator.
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- [ ] Implement "delete task" feature w/popup confirmation.
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## Physical
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- [x] Unit System
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- [ ] Presets for Blender and Tidy3D
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- [ ] Dropdowns in the socket UI
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- [x] Time
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- [x] Angle
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- [ ] Remove superfluous units.
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- [ ] Solid Angle (steradian)
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- [x] Frequency (hertz)
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- [ ] Angular Frequency (`rad*hertz`)
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### Cartesian
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- [x] Length
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- [x] Area
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- [x] Volume
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- [ ] Point 1D
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- [ ] Point 2D
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- [x] Point 3D
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- [ ] Size 2D
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- [x] Size 3D
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- [ ] Rotation 3D
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- [ ] Implement Euler methods
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- [ ] Implement Quaternion methods
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### Mechanical
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- [ ] Mass
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- [x] Speed
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- [ ] Velocity 3D
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- [x] Acceleration Scalar
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- [ ] Acceleration 3D
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- [x] Force Scalar
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- [ ] Force 3D
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- [ ] Pressure
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### Energy
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- [ ] Energy (joule)
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- [ ] Power (watt)
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- [ ] Temperature
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### Electrodynamical
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- [ ] Current (ampere)
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- [ ] Current Density 3D
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- [ ] Charge (coulomb)
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- [ ] Voltage (volts)
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- [ ] Capacitance (farad)
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- [ ] Resistance (ohm)
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- [ ] Electric Conductance (siemens)
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- [ ] Magnetic Flux (weber)
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- [ ] Magnetic Flux Density (tesla)
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- [ ] Inductance (henry)
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- [ ] Electric Field 3D (`volt*meter`)
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- [ ] Magnetic Field 3D (tesla)
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### Luminal
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- [ ] Luminous Intensity (candela)
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- [ ] Luminous Flux (lumen)
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- [ ] Illuminance (lux)
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### Optical
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- [ ] Jones Polarization
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- [ ] Polarization (Stokes)
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# Internal / Architecture
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## CRITICAL
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- [ ] Rethink the way that loose sockets are replaced, specifically with respect to deterministic ordering.
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- Currently order is not guaranteed. This is causing problems.
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## User-Facing Errors and Legal Considerations
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- [ ] `log.error` should invoke `self.report` in some Blender operator - used for errors that are due to usage error (which can't simply be prevented with UX design, like text file formatting of import), not due to error in the program.
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- [ ] License header UI for MaxwellSimTrees, to clarify the AGPL-compatible potentially user-selected license that trees must be distributed under.
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- [ ] A "CitationsFlow" FlowKind which simply propagates citations.
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- [ ] Implement standardization of nodes/sockets w/individualized SemVer
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- Perhaps keep node / socket versions in a property, so that trying to load an incompatible major version hop can error w/indicator of where to find a compatible `blender_maxwell` version.
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- Integrate w/BLField, to help the user manage addon updates that would break their tree.
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## Documentation
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- [ ] Make all modules available
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- [ ] Publish documentation site.
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- [ ] Initial user guides w/pictures.
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- [ ] Comb through and finish `__doc__`s.
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## Performance
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- [ ] Optimize GN value pushing w/sympy expression hashing.
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## Style
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Header color style can't be done, unfortunately. Body color feels unclean, so nothing there for now.
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- [ ] Node icons to denote preview/plot state.
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## Registration and Contracts
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- [ ] Refactor the node category code; it's ugly.
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- It's maybe not that easy. And it seems to work with surprising reliability. Leave it alone for now!
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- [ ] (?) Would be nice with some kind of indicator somewhere to help set good socket descriptions when making geonodes.
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## Managed Objects
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- [ ] Implement ManagedEmpty
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- [ ] Implement image-based empty connected to an image (which is managed by a different ManagedImage owned by the same node instance)
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- [ ] Implement ManagedVol
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- [ ] Implement loading the xarray-defined voxels into OpenVDB, saving it, and loading it as a managed BL object with the volume setting.
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- [ ] Implement basic jax-driven volume voxel processing, especially cube based slicing.
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- [ ] Implement jax-driven linear interpolation of volume voxels to an image texture, whose pixels are sized according to the dimensions of another managed plane object (perhaps a uniquely described Managed BL object itself).
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## Utils or Services
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- [ ] Document the `tdcloud` service thoroughly and open a GitHub discussion about `td.web` shortcomings.
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## Node Base Class
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- [ ] Re-engineer "presets" to use an Enum of some kind.
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## Events
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- [ ] When a Blender object is selected, select the node that owns its ManagedObj.
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- [ ] Node button / shortcut / something to select the ManagedObj owned by a node.
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## Socket Base Class
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- [ ] Collect `SocketDef` objects like we do with `BL_REGISTER`, without any special mojo sauce.
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## Many Nodes
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- [ ] Implement "Steady-State" / "Time Domain" on all relevant Monitor nodes
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- [ ] Medium Features
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- [ ] Accept spatial field. Else, spatial uniformity.
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- [ ] Accept non-linearity. Else, linear.
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- [ ] Accept space-time modulation. Else, static.
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- [ ] Modal Features
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- ModeSpec, for use by ModeSource, ModeMonitor, ModeSolverMonitor. Data includes ModeSolverData, ModeData, ScalarModeFieldDataArray, ModeAmpsDataArray, ModeIndexDataArray, ModeSolver.
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## Many Sockets
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|
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## Development Tooling
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- [ ] Implement `pre-commit.
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- [ ] Pass a `mypy` check
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- [ ] Pass all `ruff` checks, including `__doc__` availability.
|
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- [ ] Add profiling support, so we can properly analyze performance characteristics.
|
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- Without a test harness, or profile-while-logging, there may be undue noise in our analysis.
|
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- [ ] Simple `pytest` harnesses for unit testing of nodes, sockets.
|
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- Start with the low-hanging-fruit stuff. Eventually, work towards wider code coverage w/headless Blender.
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|
|
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## Version Churn
|
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- [ ] Migrate to StrEnum sockets (py3.11).
|
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- [ ] Implement drag-and-drop node-from-file via bl4.1 file handler API.
|
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- [ ] Start thinking about ways around `__annotations__` hacking.
|
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- [ ] Prepare for for multi-input sockets (bl4.2)
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- PR has been merged: <https://projects.blender.org/blender/blender/commit/14106150797a6ce35e006ffde18e78ea7ae67598> (for now, just use the "Combine" node and have seperate socket types for both).
|
|
- The `Combine` node has its own benefits, including previewability of "only structures". Multi-input would mainly be a kind of shorthand in specific cases (like input to the `Combine` node?)
|
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- [ ] Prepare for volume geonodes (bl4.2; July 16, 2024)
|
|
- Will allow for actual volume processing in GeoNodes.
|
|
- We might still want/need the jax based stuff after; volume geonodes aren't finalized.
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|
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## Packaging
|
|
- [ ] Test lockfile platform-agnosticism on Windows
|
|
|
|
## BLCache
|
|
- [ ] Replace every raw property with `BLField`.
|
|
- [ ] Add matrix property support: https://developer.blender.org/docs/release_notes/3.0/python_api/#other-additions
|
|
- [ ] Fix many problems by persisting `_enum_cb_cache` and `_str_cb_cache`.
|
|
- [ ] Docstring parser for descriptions.
|
|
- [ ] Method of dynamically setting property options after creation, using `idproperty_ui_data`
|
|
|
|
|
|
|
|
|
|
|
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# BUGS
|
|
We're trying to do our part by reporting bugs we find!
|
|
This is where we keep track of them for now, if they're not covered by the above listings.
|
|
|
|
## Blender Maxwell Bugs
|
|
|
|
## Blender Bugs
|
|
Reported:
|
|
- (SOLVED) <https://projects.blender.org/blender/blender/issues/119664>
|
|
|
|
Unreported:
|
|
- The `__mp_main__` bug.
|
|
- Animated properties within custom node trees don't update with the frame. See: <https://projects.blender.org/blender/blender/issues/66392>
|
|
- Can't update `items` using `id_propertie_ui` of `EnumProperty`
|
|
|
|
## Tidy3D bugs
|
|
Unreported:
|
|
- Directly running `SimulationTask.get()` is missing fields - it doesn't return some fields, including `created_at`. Listing tasks by folder is not broken.
|
|
|
|
|
|
|
|
# Designs / Proposals
|
|
|
|
## Coolness Things
|
|
- Let's have operator `poll_message_set`: https://projects.blender.org/blender/blender/commit/ebe04bd3cafaa1f88bd51eee5b3e7bef38ae69bc
|
|
- Careful, Python uses user site packages: <https://projects.blender.org/blender/blender/commit/72c012ab4a3d2a7f7f59334f4912402338c82e3c>
|
|
- Our modifier obj can see execution time: <https://projects.blender.org/blender/blender/commit/8adebaeb7c3c663ec775fda239fdfe5ddb654b06>
|
|
|
|
## IDEAS
|
|
- [ ] Depedencies-gated addon preferences.
|
|
- [ ] Preferences-based specification/alteration of default unit systems for Tidy3D and Blender.
|
|
- [ ] Preferences-based specification/alteration of Tidy3D API key, so we can factor away all the `prelock` bullshit.
|
|
|
|
- [ ] Subsockets
|
|
- We need Exprs to not be so picky.
|
|
- All the sympy-making nodes should be subsockets of Expr, so that you can plug any socket that should work with Expr into Expr.
|
|
- When it comes to Data, any Expr that produces an array-like output from its `LazyValueFunc` should be deemed compatible (as in, the Expr may plug into a Data socket).
|
|
- Specifically, that means the presence of a well-defined `Info`, as well as `jax` compatibility.
|
|
|
|
- [ ] Symbolic Expr Socket
|
|
- [ ] Nodes should be able to dynamically define new symbols on their Expr sockets.
|
|
- [ ] Expr's `FlowKind`s should be expanded:
|
|
- [ ] `Capabilities`: Expand to include subsocket checking, where Expr is the supersocket of ex. most/all of the physical, numerical, vector sockets.
|
|
- [ ] `Value`: Just the raw sympy expression, when `active_kind` is `Value`.
|
|
- [ ] `Array`: The evaluated `LazyValueFunc`, when `active_kind` is `Array`.
|
|
- Should require that the expression as a whole simplifies to `sp.Matrix`.
|
|
- Should require that there are no symbols to be defined in a socket (since `LazyValueFunc` must be called with no args).
|
|
- [ ] `LazyValueFunc`: Create a 'jax' function from an expression, such that each symbol becomes an argument to that function.
|
|
- When `active_kind` is `Value`, it should take arrays/scalars and return a scalar (expression output is a normal sympy number of some kind).
|
|
- When `active_kind` is `Array`, it should take arrays/scalars and return an array (expression output is `sp.Matrix`).
|
|
- This kind of approach allows using
|
|
- [ ] `LazyValueRange`: Expose two expressions, start/end, but with one symbol set.
|
|
- [ ] `Info`: Should always produce an `InfoFlow` that, at minimum, has an empty `dim_*`, an `output_shape` of `None`, etc., for a scalar.
|
|
- [ ] Implement an Expr Constant node to see all this through in prototype.
|
|
- [ ] Expr: Obviously, input and output.
|
|
- [ ] Symbols: Node-bound dynamic thing where you can add and subtract symbols, as well as set their type. They should popup in the `Let:` statement of the input expr socket.
|
|
- [ ] Examples: Each symbol should have the ability to set "example values", which causes the Node to fill `Params`. When all
|
|
|
|
- [ ] Report reason for no-link using `self.report`.
|
|
|
|
- [ ] Dropping a link on empty space should query a menu of possible nodes, or if only one node is reasonable, make that node.
|
|
|
|
- [ ] Shader visualizations approximated from medium `nk` into a shader node graph, aka. a generic BSDF.
|