refactor: rewrite of ink-stroke-modeler in Rust (#4)

.gitmodules

@@ -1,6 +0,0 @@
-[submodule "ink-stroke-modeler"]
-	path = ink-stroke-modeler
-	url = https://github.com/flxzt/ink-stroke-modeler
-[submodule "abseil-cpp"]
-	path = abseil-cpp
-	url = https://github.com/abseil/abseil-cpp.git

Cargo.toml

@@ -1,28 +1,14 @@
 [package]
-build = "build.rs"
-edition = "2021"
-license = "MIT OR Apache-2.0"
 name = "ink-stroke-modeler-rs"
-rust-version = "1.65"
+license = "MIT OR Apache-2.0"
 version = "0.1.0"
-
-[dependencies]
-autocxx = "0.26.0"
-cxx = "1.0"
-thiserror = "1.0"
-
-[build-dependencies]
-anyhow = "1.0"
-autocxx-build = "0.26.0"
-autocxx-engine = "0.26.0"
-cmake = "0.1.50"
-path-slash = "0.2.1"
-pkg-config = "0.3.30"
+edition = "2021"
+rust-version = "1.65"
 
 [dev-dependencies]
+approx = "0.5.1"
 anyhow = "1.0"
-svg = "0.17.0"
+svg = "0.16.0"
+tracing = "0.1.40"
 
-[features]
-default = ["build_absl"]
-build_absl = []
+[dependencies]

README.md

@@ -3,20 +3,11 @@
 [![main docs](https://img.shields.io/badge/docs-main-informational)](https://flxzt.github.io/ink-stroke-modeler-rs/ink_stroke_modeler_rs/)
 [![CI](https://github.com/flxzt/ink-stroke-modeler-rs/actions/workflows/ci.yaml/badge.svg)](https://github.com/flxzt/ink-stroke-modeler-rs/actions/workflows/ci.yaml)
 
-WIP Rust bindings for [https://github.com/google/ink-stroke-modeler](https://github.com/google/ink-stroke-modeler), using `autocxx`
-
-# External Dependencies
-- `cmake`
-- `libclang`
+Partial rust rewrite of [https://github.com/google/ink-stroke-modeler](https://github.com/google/ink-stroke-modeler). Beware that not all functionalities are implemented (no kalman-based prediction) and the API is not identical either. 
 
 # Usage
 
-Run `cargo doc --open` to view the documentation.
-
-It is possible to choose between building the absl-cpp dependency in the crate and statically link it,
-or use the system dependency. Then the `absl-cpp-dev` (or equivalent) package must be installed.
-
-Toggled via the cargo feature `build_absl`.
+Run `cargo doc --open` to view the documentation or check `examples/stroke.rs` for a full example
 
 ### License
 

docs/math_part.typ

@@ -0,0 +1,6 @@
+#include "notations.typ"
+#include "wobble.typ"
+#include "resampling.typ"
+#include "position_modeling.typ"
+#include "stroke_end.typ"
+#include "stylus_state_modeler.typ"

docs/notations.html

@@ -0,0 +1,47 @@
+<h2>Notations</h2>
+<div class="box">
+<p>We denote :</p>
+<ul>
+<li><p>Pressure :
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>ν</mi><mo>∈</mo><mo stretchy="false" form="prefix">[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo stretchy="false" form="postfix">]</mo></mrow><annotation encoding="application/x-tex">\nu \in \lbrack 0,1\rbrack</annotation></semantics></math></p></li>
+<li><p>time :
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>t</mi><mo>≥</mo><mn>0</mn></mrow><annotation encoding="application/x-tex">t \geq 0</annotation></semantics></math></p></li>
+<li><p>point : defined by position
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi>x</mi><annotation encoding="application/x-tex">x</annotation></semantics></math>
+and
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi>y</mi><annotation encoding="application/x-tex">y</annotation></semantics></math>
+(or
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>p</mi><mo>=</mo><mrow><mo stretchy="true" form="prefix">(</mo><mi>x</mi><mo>,</mo><mi>y</mi><mo stretchy="true" form="postfix">)</mo></mrow><mo>∈</mo><msup><mi>ℝ</mi><mn>2</mn></msup></mrow><annotation encoding="application/x-tex">p = (x,y) \in {\mathbb{R}}^{2}</annotation></semantics></math>)</p></li>
+<li><p>Raw inputs are denoted by a tuple
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>i</mi><mo stretchy="false" form="prefix">[</mo><mi>k</mi><mo stretchy="false" form="postfix">]</mo><mo>=</mo><mrow><mo stretchy="true" form="prefix">(</mo><mi>ν</mi><mo stretchy="false" form="prefix">[</mo><mi>k</mi><mo stretchy="false" form="postfix">]</mo><mo>,</mo><mi>t</mi><mo stretchy="false" form="prefix">[</mo><mi>k</mi><mo stretchy="false" form="postfix">]</mo><mo>,</mo><mi>x</mi><mo stretchy="false" form="prefix">[</mo><mi>k</mi><mo stretchy="false" form="postfix">]</mo><mo>,</mo><mi>y</mi><mo stretchy="false" form="prefix">[</mo><mi>k</mi><mo stretchy="false" form="postfix">]</mo><mo stretchy="true" form="postfix">)</mo></mrow></mrow><annotation encoding="application/x-tex">i\lbrack k\rbrack = \left( \nu\lbrack k\rbrack,t\lbrack k\rbrack,x\lbrack k\rbrack,y\lbrack k\rbrack \right)</annotation></semantics></math>
+with
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>k</mi><mo>∈</mo><mi>ℕ</mi></mrow><annotation encoding="application/x-tex">k \in {\mathbb{N}}</annotation></semantics></math>.</p></li>
+</ul>
+</div>
+<div class="box">
+<p>An <em>input stream</em> is a sequence of raw inputs
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>i</mi><mo>=</mo><mrow><mo stretchy="true" form="prefix">(</mo><mi>ν</mi><mo>,</mo><mi>t</mi><mo>,</mo><mi>x</mi><mo>,</mo><mi>y</mi><mo stretchy="true" form="postfix">)</mo></mrow></mrow><annotation encoding="application/x-tex">i = (\nu,t,x,y)</annotation></semantics></math></p>
+<ul>
+<li><p>with time
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>t</mi><mo stretchy="false" form="prefix">[</mo><mi>k</mi><mo stretchy="false" form="postfix">]</mo></mrow><annotation encoding="application/x-tex">t\lbrack k\rbrack</annotation></semantics></math>
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mo>↗</mo><mo>↗</mo></mrow><annotation encoding="application/x-tex">\nearrow \nearrow</annotation></semantics></math>
+strictly increasing</p></li>
+<li><p>starts with a <code>Down</code> event</p></li>
+<li><p>contains <code>Move</code> for
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>k</mi><mo>≥</mo><mn>1</mn></mrow><annotation encoding="application/x-tex">k \geq 1</annotation></semantics></math></p></li>
+<li><p>ends either with a <code>Move</code> or a <code>Up</code> . If it
+is a <code>Up</code> we say the input stream is
+<em>complete</em></p></li>
+</ul>
+</div>
+<div class="box">
+<p>We addition define</p>
+<ul>
+<li><p><math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><msub><mi>v</mi><mi>x</mi></msub><mo>,</mo><msub><mi>v</mi><mi>y</mi></msub><mo>,</mo><msub><mi>a</mi><mi>x</mi></msub><mo>,</mo><msub><mi>a</mi><mi>y</mi></msub></mrow><annotation encoding="application/x-tex">v_{x},v_{y},a_{x},a_{y}</annotation></semantics></math>
+as the velocity and acceleration.</p></li>
+</ul>
+<p>With the vector shorthand
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>v</mi><mo>=</mo><mrow><mo stretchy="true" form="prefix">(</mo><msub><mi>v</mi><mi>x</mi></msub><mo>,</mo><msub><mi>v</mi><mi>y</mi></msub><mo stretchy="true" form="postfix">)</mo></mrow><mo>∈</mo><msup><mi>ℝ</mi><mn>2</mn></msup></mrow><annotation encoding="application/x-tex">v = \left( v_{x},v_{y} \right) \in {\mathbb{R}}^{2}</annotation></semantics></math>
+and
+<math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>a</mi><mo>=</mo><mrow><mo stretchy="true" form="prefix">(</mo><msub><mi>a</mi><mi>x</mi></msub><mo>,</mo><msub><mi>a</mi><mi>y</mi></msub><mo stretchy="true" form="postfix">)</mo></mrow><mo>∈</mo><msup><mi>ℝ</mi><mn>2</mn></msup></mrow><annotation encoding="application/x-tex">a = \left( a_{x},a_{y} \right) \in {\mathbb{R}}^{2}</annotation></semantics></math></p>
+</div>

docs/notations.typ

@@ -0,0 +1,31 @@
+#set page(width: 16cm, margin: 0.5em, height: auto)
+#let definition(content) = box(fill: luma(92%), width: 100%, inset: 0.5em, stroke: black)[#content]
+
+#import "@preview/lovelace:0.2.0": *
+#show: setup-lovelace.with(body-inset: 0pt)
+
+#let pr = $nu$
+#let time = $t$
+== Notations
+
+#definition[
+  We denote :
+  - Pressure : $pr in [0,1]$
+  - time : $t >=0$
+  - point : defined by position $x$ and $y$ (or $p = (x,y) in RR^2$)
+  - Raw inputs are denoted by a tuple $i[k] = (pr[k], t[k], x[k],y[k])$ with $k in NN$.
+]
+
+#definition[
+  An _input stream_ is a sequence of raw inputs $i = (pr, t,x,y)$
+  - with time $t[k]$ $arrow.tr arrow.tr$ strictly increasing
+  - starts with a #raw("Down") event
+  - contains #raw("Move") for $k >=1$
+  - ends either with a #raw("Move") or a #raw("Up") . If it is a #raw("Up") we say the input stream is _complete_
+]
+
+#definition[
+  We addition define
+  - $v_x, v_y, a_x, a_y$ as the velocity and acceleration.
+  With the vector shorthand $v = (v_x,v_y) in RR^2$ and $a = (a_x, a_y) in RR^2$
+]