README.md

@@ -1,28 +1,16 @@
-<div align="center">
-  <img width="205" alt="TALA logo" src="https://user-images.githubusercontent.com/3120367/211999109-3b1ef11c-8efa-4473-aa8c-5ef43d7dc962.png">
-  <h1>
-    TALA
-  </h1>
- </div>
-
+# TALA
 
 TALA is a diagram layout engine designed specifically for software architecture diagrams,
-though it works well in other domains too.
-
-TALA is closed-source. This repository is primarily for installation instructions. You can
-also use this repository to report issues, ask questions, and request features.
+though it works well in other domains too. TALA is closed-source (for now). This
+repository is primarily for installation instructions. You can also use this repository to
+report issues, ask questions, and request features.
 
 To learn more about TALA, please visit
-[https://terrastruct.com/tala](https://terrastruct.com/tala). Note that this is a paid
-layout engine, which requires a license for any commercial use. The license is purchasable
-in that same link. TALA is free to evaluate, but without a license, will render with a
-watermark.
+[https://terrastruct.com/tala](https://terrastruct.com/tala).
 
 To compare TALA with other layout engines, please visit
 [https://text-to-diagram.com](https://text-to-diagram.com/?a=d2&layout_a=tala&b=d2&layout_b=dagre&example=chess).
 
-[User Manual (PDF)](https://github.com/terrastruct/TALA/raw/master/TALA_User_Manual.pdf)
-
 ## Rendering samples
 
 You can see the `.d2` text for these in [./docs/d2](./docs/d2). Samples are
@@ -34,30 +22,16 @@ You can see the `.d2` text for these in [./docs/d2](./docs/d2). Samples are
 
 ## Installation
 
-### Install script
-
-The most convenient way to install is through the install script.
-
 ```sh
-# With --dry-run the install script will print the commands it will use
-# to install without actually installing so you know what it's going to do.
-curl -fsSL https://d2lang.com/install.sh | sh -s -- --tala --dry-run
+curl -fsSL https://d2lang.com/install.sh | sh -s -- --tala --dryrun
 # If things look good, install for real.
 curl -fsSL https://d2lang.com/install.sh | sh -s -- --tala
 ```
 
-You can also find binaries [Releases](https://github.com/terrastruct/TALA/releases) page
-for Linux, MacOS and Windows, for both AMD and ARM. Download the appropriate one for your
-OS to a directory in your path.
-
-### macOS (Homebrew)
-
-If you're on macOS, you can alternatively install with `brew`. (the install script above
-does this automatically if you have `brew` installed).
-
-```sh
-brew install terrastruct/tap/tala
-```
+You can also find binaries
+[Releases](https://github.com/terarstruct/TALA/releases) page for Linux and MacOS, for
+both AMD and ARM. Download the appropriate one for your OS to a directory
+in your path. Windows coming soon.
 
 ### Post-install
 
@@ -78,54 +52,16 @@ setting the environment variable `D2_LAYOUT`.
 D2_LAYOUT=tala d2 in.d2 out.svg
 ```
 
-### Seeds
-
-Optimal placements of nodes that minimizes distance and crossings is an NP-hard problem.
-TALA searches with heuristics to get an approximation. This search space has some
-randomness at each step. Choosing a different seed for this randomness can have signficant
-impact on the overall layout, as it may converge on an entirely different one.
-
-For advanced usage of TALA, you may specify the seed to get a different layout:
-
-```d2
-d2 --layout tala --tala-seeds 44 input.d2
-```
-
 ### Add API token (optional)
 
 You may skip this step if you are just evaluating.
 
-#### As environment variable
-
 If you have an API token, copy and paste it into your environment variables. E.g.
 
 ```bash
 export TSTRUCT_TOKEN = "tstruct_..."
 ```
 
-#### As config file
-
-You can also use a JSON file as config. The benefit to this is that when the TALA license
-expires and has to renew, it will swap out the key for you automatically in the background
-with the updated one.
-
-By default, TALA finds the configuration file at the following path:
-
-`$HOME/.config/tstruct/auth.json`:
-
-```json
-{
-  "api_token": "tstruct_xxx"
-}
-```
-
-You can change where this path is by configuring it with the following environment
-variable:
-
-```bash
-export TSTRUCT_AUTHFILE = /var/local/...
-```
-
 ## License keys
 
 TALA is freely installable and locally runnable for evaluation. You'll need an API token

ci/release/changelogs/v0.2.10.md

@@ -1,9 +0,0 @@
-#### Features 🚀
-
-#### Improvements 🧹
-
-- New algorithm for hierarchy crossing minimization
-
-#### Bugfixes ⛑️
-
-- Fixes compatability bug with D2 v0.1.3

ci/release/changelogs/v0.2.11.md

@@ -1,11 +0,0 @@
-#### Features 🚀
-
-- TALA's core algorithm seed can be specified.
-
-#### Improvements 🧹
-
-- Reduces edge crossings such that no port swaps can result in less crossings.
-
-#### Bugfixes ⛑️
-
-- Fixes an alignment issue with descendants. [#15](https://github.com/terrastruct/TALA/issues/15)

ci/release/changelogs/v0.2.12.md

@@ -1,3 +0,0 @@
-#### Improvements 🧹
-
-- Up to 2x faster runtime

ci/release/changelogs/v0.2.13.md

@@ -1,3 +0,0 @@
-#### Bugfixes ⛑️
-
-- Fixes edge case where children of container could escape their containers.

ci/release/changelogs/v0.2.14.md

@@ -1,14 +0,0 @@
-#### Improvements 🧹
-
-- Improves cluster arrangements and edge routing
-- Positions shapes closer to neighbors outside its own container
-- Reduce edge routing runtime by ~10%
-- Improves hierarchy algorithm to place objects at different levels when appropriate
-
-#### Bugfixes ⛑️
-
-- Fixes a rare `panic` while reducing gap between nodes
-- Fixes a rare `panic` with sequences (connected `step` shapes)
-- Fixes a rare panic with clusters
-- Fixes a rare panic when children of a container are connected to different childrens of different containers
-- Fixes an error where a connection route sometimes couldn't be found from a center step of a sequence

ci/release/changelogs/v0.2.15.md

@@ -1,11 +0,0 @@
-#### Improvements 🧹
-
-- Padding reduced on containers to align with more compact look and feel of D2 0.2.
-- `sql_table` routing switched from using hierarchical layout engine to orthogonal.
-- Diagrams with multiple subgraphs are more compact.
-- Much improved hierarchical alignments for diagrams where connections skip hierarchy levels (e.g. a node in the first row connected to another 2 rows down).
-
-#### Bugfixes ⛑️
-
-- Fixes an issue with hierarchy leveling where connections between two nodes of the same level could occur.
-- `sql_table` connections where column is not specified no longer always points to first column.

ci/release/changelogs/v0.2.5.md

@@ -1,2 +0,0 @@
-v0.2.5 fixes a bug in the make install script to create the necessary directories under
-prefix automatically instead of erroring out.

ci/release/changelogs/v0.2.6.md

@@ -1,5 +0,0 @@
-#### Improvements 🧹
-
-- Route between table columns, instead of just tables, to show the exact relationship in Entity Relationship (ER) diagrams
-- Improved consistency in the automatic direction of layouts
-- `make install` defaults to installation to `/usr/local` as before but now if `/usr/local` is not accessible to the current user, it will use `~/.local` instead of prompting for sudo. You can pass `--prefix /usr/local` to force installation into `/usr/local` with a prompt for sudo.

ci/release/changelogs/v0.2.7.md

@@ -1,3 +0,0 @@
-#### Improvements 🧹
-
-- The Windows release binary is now suffixed correctly with `.exe` [#388](https://github.com/terrastruct/d2/issues/388)

ci/release/changelogs/v0.2.8.md

@@ -1,7 +0,0 @@
-#### Features 🚀
-
-- keyword `direction` is now supported in containers to adjust layouts towards the specified direction
-
-#### Improvements 🧹
-
-- edge routing is now up to 2x faster

ci/release/changelogs/v0.2.9.md

@@ -1,11 +0,0 @@
-#### Features 🚀
-
-- Loops (self edges) are now supported
-
-#### Improvements 🧹
-
-- Node alignment are better
-
-#### Bugfixes ⛑️
-
-- Fixes a rare panic that could happen when a `near` relation was defined between clustered nodes

ci/release/changelogs/v0.3.0.md

@@ -1,55 +0,0 @@
-TALA 0.3.0 implements position-locking to give control over parts of the diagram where you need it. This is an advanced feature that opens up a world of possibilities to create small bubbles of customized layouts and combine it with autolayout. For example, here's a legend:
-
-<img src="https://raw.githubusercontent.com/terrastruct/TALA/master/docs/assets/legend.png" />
-
-```d2
-Legend: {
-  top: 0
-  left: 0
-  blue: "" {
-    width: 20
-    height: 20
-    left: 0
-    top: 0
-    style.stroke: black
-  }
-  blue-explanation: Actions {
-    shape: text
-    left: 50
-    top: 0
-  }
-
-  green: "" {
-    width: 20
-    height: 20
-    left: 0
-    top: 50
-    style.fill: honeydew
-    style.stroke: black
-  }
-  green-explanation: Intermediate artifacts {
-    shape: text
-    left: 50
-    top: 50
-  }
-}
-```
-
-We're excited to see all the creative diagrams this enables!
-
-#### Features 🚀
-
-- `top` and `left` positions implemented.
-
-#### Improvements 🧹
-
-- ~30% faster for large, connected diagrams
-- Much faster gap normalization for all diagrams
-- Bin-packing algorithm improved to reduce whitespace between non-connected subgraphs
-
-#### Bugfixes ⛑️
-
-- Fixes label placements avoiding connections that weren't actually obstructing
-- Fixes a rare panic that could with cluster nodes
-- Edges could sometimes route through nodes that were not part of its subgraph
-- Edges between containers that were perfectly aligned was sometimes unable to find a route.

ci/release/changelogs/v0.3.1.md

@@ -1 +0,0 @@
-hotfix to last release where the plugin would give an error saying container self-edges were not allowed when they are.

ci/release/changelogs/v0.3.10.md

@@ -1,11 +0,0 @@
-#### Features 🚀
-
-- Configure timeout value with D2_TIMEOUT env var.
-
-#### Improvements 🧹
-
-#### Bugfixes ⛑️
-
-- Fixes grid label font size
-- Prevents scenarios where bidirectional edges with different arrowheads could overlap each other
-- Fixes a rare bug where shapes in a tree layout could sometimes be misplaced

ci/release/changelogs/v0.3.11.md

@@ -1,10 +0,0 @@
-#### Improvements 🧹
-
-- Connections from a `sql_table` column and a non-column will now route to the specific column
-- Reduce scenarios where nodes could end up far from a connected node with a fixed position
-- Reduce rare scenarios where a subgraph within a container could end up far from other subgraphs connected to shapes outside the container
-
-#### Bugfixes ⛑️
-
-- Fixes a rare bug resulting in non-deterministic layouts
-- Fixes scenarios where trees could become very wide with excessive spacing between subtrees

ci/release/changelogs/v0.3.12.md

@@ -1,9 +0,0 @@
-#### Improvements 🧹
-
-- Connections can now route through shapes at a fixed position that block access to another shape
-- Layout is up to 74% faster on very large diagrams
-
-#### Bugfixes ⛑️
-
-- Fixes a rare scenario where containers could end up overlapping
-- Fixes a bug where shapes are grown to fit connections despite having width or height set

ci/release/changelogs/v0.3.2.md

@@ -1,19 +0,0 @@
-Label positions improve significantly!
-
-### Before
-
-<img width="1003" alt="Screen Shot 2023-03-04 at 11 05 20 AM" src="https://user-images.githubusercontent.com/3120367/222924247-51d0b491-71b5-4d3d-89fd-e22af6e991f4.png">
-
-### After
-
-<img width="1036" alt="Screen Shot 2023-03-04 at 11 05 26 AM" src="https://user-images.githubusercontent.com/3120367/222924254-3b0906e0-360d-44e5-b299-62a8850cab18.png">
-
-#### Improvements 🧹
-
-- Improves edge label positioning
-- Improves node label positioning
-
-#### Bugfixes ⛑️
-
-- Fixes a rare bug that could affect edge routes
-- Fixes a bug with top and left keywords in nested containers that could cause layout errors

ci/release/changelogs/v0.3.3.md

@@ -1,8 +0,0 @@
-#### Improvements 🧹
-
-- Clusters are sized such that labels always have enough room.
-- Improves shape-specific label position preferences (for example, parallelograms now prefer placing labels within the shape).
-
-#### Bugfixes ⛑️
-
-- Nested node labels no longer overlap container boundaries occasionally

ci/release/changelogs/v0.3.4.md

@@ -1,34 +0,0 @@
-This release brings massive improvements in performance. Screenshot from our internal benchmarks on a batch of tests, comparing this release vs the last:
-
-<img width="540" alt="Screen Shot 2023-03-18 at 4 03 09 PM" src="https://user-images.githubusercontent.com/3120367/226144882-c6746a65-1f60-4a55-8382-9e5ea2a686a2.png">
-
-As a result of this, TALA by default now executes 3 runs in parallel with different seeds, and picking the best one for you. This should produce better results at a much higher rate!
-
-
-#### Features 🚀
-
-- You can now pass in multiple seeds, and TALA will race multiple layout runs with
-  different seeds, choosing the best outcome. See the TALA Manual for more.
-
-#### Improvements 🧹
-
-- Improves subgraph compaction giving space for better edges
-- Improved edge routing for clustered nodes
-- Significantly speeds up edge routing with many edges
-- Significant performance improvements
-- Uses up to 56% less memory for layouts with `sql_table`s
-
-#### Bugfixes ⛑️
-
-- Fixes a rare condition that allowed nodes with self loops to escape their containers
-- Fixes edge from container going through descendants
-- Fixes a bug that could cause some asymmetrical edge routing
-- Fixes container shapes sometimes not having enough padding to fit icons
-- Fixes the alignment of nodes connected to sequence steps
-- Fixes the placement of clustered nodes connected to sequences
-
-#### Breaking Changes
-
-- `tala-seed` changed to `tala-seeds`. You can still continue to pass in a single number,
-  same as before. But the name change is reflective that it can now take in multiple
-  seeds.

ci/release/changelogs/v0.3.5.md

@@ -1,18 +0,0 @@
-Way, way faster!
-
-#### Improvements 🧹
-
-- Edge routing is up to 31% faster
-- Improves layout of clusters
-- Node placement is up to 2x faster
-- Up to 41% less memory usage
-- Avoids clustering nodes when their sizes are disproportionately different
-- Prevent image labels from being placed over the image in some cases
-
-#### Bugfixes ⛑️
-
-- Fixes a rare bug where container children place outside of container
-- Fixes self-loop sizing on containers
-- Fixes node drift in certain cases
-- Fixes an issue where unlabeled connections could completely overlap each other
-- Fixes a bug with node alignments

ci/release/changelogs/v0.3.6.md

@@ -1,5 +0,0 @@
-Compatible with D2 0.4.1 onwards.
-
-#### Improvements 🧹
-
-- Improves edge routing between hierarchies and non-hierarchies

ci/release/changelogs/v0.3.7.md

@@ -1,14 +0,0 @@
-#### Features 🚀
-
-- Nodes are expanded to aesthetically fit all connections if not enough room with default dimensions
-- Arrowhead labels are considered in autolayout and avoid overlaps as much as possible
-
-#### Improvements 🧹
-
-- Pairs of nodes prefer horizontal arrangements given multiple connections with labels
-
-#### Bugfixes ⛑️
-
-- Fixes a rare bug using `near` to a node in a tree structure
-- Fixes a rare bug positioning nested node clusters
-- Fixes a rare panic involving edge labels

ci/release/changelogs/v0.3.8.md

@@ -1,19 +0,0 @@
-#### Features 🚀
-
-- Containers respect `width` and `height` settings, though they will expand to fit content if needed
-
-#### Improvements 🧹
-
-- Node placement is up to 2x faster
-- Avoids overlapping edges when they have different arrowheads
-- `direction` keyword now affects bidirectional edges
-- Spacing between nodes ensures that labels will fit
-- Edges stick to outer bounds of shapes with `3d` or `multiple`
-- Improves layouts for clusters with both icons and labels
-- Improves edge balancing to look more symmetrical
-
-#### Bugfixes ⛑️
-
-- Fixes shape and connection labels potentially overlapping arrowhead labels
-- Fixes a bug with arrowhead labels on the `-` end of a connection
-- Fixes container shapes sometimes swapping positions with another shape errantly

ci/release/changelogs/v0.4.0.md

@@ -1,31 +0,0 @@
-TALA 0.4.0 is a massive improvement in layout positions of a wide range of diagrams.
-
-<img width="814" alt="Screenshot 2024-07-08 at 2 44 49 PM" src="https://github.com/terrastruct/TALA/assets/3120367/a4d3ca21-a0bc-4771-9c82-ab2fc736a439" />
-
-#### Improvements 🧹
-
-- Unconnected nodes and subgraphs are packed more tightly together
-- Containers of similar sizes with indirect connections are aligned better
-- Some diagrams escape local minimas better
-- Nodes connected on both sides are more equidistant to both
-- Cluster edge labels prioritize not intersecting with other cluster edges
-- Node labels reposition to avoid overlapping with icons
-- Node icons reposition to avoid overlapping with fixed labels
-- Multiple edges between nodes are now ordered (left-right and top-down) by the order they were declared
-- Edge routes between grid cells avoid node labels
-- Edge routes consider paths that go through "invisible" nodes and edges (e.g. zero opacity)
-- When only one of `width` or `height` is specified for a container, nodes will full up better to reduce unused space
-- Tree structures are built more symmetrically
-- Containers with edges going into its children are pulled closer together to the other edge endpoint
-- Clusters of nodes are oriented more reasonably to facilitate better routes
-- Clusters routes more often converge on a single point in the middle to form the "fork" aesthetic
-- Node labels are positioned in areas of more space
-- Edge labels avoid fixed node icon positions
-
-#### Bugfixes ⛑️
-
-- Fixes extra warnings that appeared with an invalid token
-- Fixes panic when edges were defined between actors in different sequence diagrams
-- Fixes custom label positions and icon positions not working for nodes in tree structures
-- Disallow edges with different styles (e.g. stroke colors) from sharing routes
-- Some direct straight routes weren't being considered between two non-diagonal nodes

ci/release/changelogs/v0.4.2.md

@@ -1,19 +0,0 @@
-#### Features 🚀
-
-- `tala-seeds` can be specified in the source code through `vars` (see manual for more)
-
-#### Improvements 🧹
-
-- Containers expand to fit large labels
-- Edge labels are placed more intelligently to avoid overlaps
-- Nodes with multiple edges to another node with long edge labels are positioned more intelligently
-- Two nodes with > 2 edges with labels strongly prefer being in horizontal orientation to each other. This increases the chance of their multiple edge labels being readable.
-- Hierarchies with multiple parents are more centered
-- Up to 20% faster
-
-#### Bugfixes ⛑️
-
-- Fixed rare panic when hierarchies with containers were used
-- Various edge cases that affect layout have been fixed
-- Fixes rare panic with multiple edges with arrowhead labels on the same table column
-- Fixes rare panic using step shapes connected to other shapes