adds tangentalArc and tangentalArcTo to the stdlib (#748)

* start of tangental arc

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* updates

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* update docs

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* fixes

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* updates

Signed-off-by: Jess Frazelle <github@jessfraz.com>

---------

Signed-off-by: Jess Frazelle <github@jessfraz.com>

docs/kcl/std.md

@@ -50,6 +50,8 @@
 	* [`sqrt`](#sqrt)
 	* [`startSketchAt`](#startSketchAt)
 	* [`tan`](#tan)
+	* [`tangentalArc`](#tangentalArc)
+	* [`tangentalArcTo`](#tangentalArcTo)
 	* [`tau`](#tau)
 	* [`xLine`](#xLine)
 	* [`xLineTo`](#xLineTo)
@@ -3234,6 +3236,320 @@ tan(num: number) -> number
 
 
 
+### tangentalArc
+
+Draw an arc.
+
+
+
+```
+tangentalArc(data: TangentalArcData, sketch_group: SketchGroup) -> SketchGroup
+```
+
+#### Arguments
+
+* `data`: `TangentalArcData` - Data to draw a tangental arc.
+```
+{
+	// Offset of the arc, in degrees.
+	offset: number,
+	// Radius of the arc. Not to be confused with Raiders of the Lost Ark.
+	radius: number,
+} |
+{
+	// The tag.
+	tag: string,
+	// Where the arc should end. Must lie in the same plane as the current path pen position. Must not be colinear with current path pen position.
+	to: [number],
+} |
+[number]
+```
+* `sketch_group`: `SketchGroup` - A sketch group is a collection of paths.
+```
+{
+	// The id of the sketch group.
+	id: uuid,
+	// The position of the sketch group.
+	position: [number],
+	// The rotation of the sketch group.
+	rotation: [number],
+	// The starting path.
+	start: {
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+},
+	// The paths in the sketch group.
+	value: [{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+	// The x coordinate.
+	x: number,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+	// The x coordinate.
+	x: number,
+	// The y coordinate.
+	y: number,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+}],
+}
+```
+
+#### Returns
+
+* `SketchGroup` - A sketch group is a collection of paths.
+```
+{
+	// The id of the sketch group.
+	id: uuid,
+	// The position of the sketch group.
+	position: [number],
+	// The rotation of the sketch group.
+	rotation: [number],
+	// The starting path.
+	start: {
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+},
+	// The paths in the sketch group.
+	value: [{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+	// The x coordinate.
+	x: number,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+	// The x coordinate.
+	x: number,
+	// The y coordinate.
+	y: number,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+}],
+}
+```
+
+
+
+### tangentalArcTo
+
+Draw an arc.
+
+
+
+```
+tangentalArcTo(data: TangentalArcToData, sketch_group: SketchGroup) -> SketchGroup
+```
+
+#### Arguments
+
+* `data`: `TangentalArcToData` - Data to draw a tangental arc to a specific point.
+```
+{
+	// The tag.
+	tag: string,
+	// Where the arc should end. Must lie in the same plane as the current path pen position. Must not be colinear with current path pen position.
+	to: [number],
+} |
+[number]
+```
+* `sketch_group`: `SketchGroup` - A sketch group is a collection of paths.
+```
+{
+	// The id of the sketch group.
+	id: uuid,
+	// The position of the sketch group.
+	position: [number],
+	// The rotation of the sketch group.
+	rotation: [number],
+	// The starting path.
+	start: {
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+},
+	// The paths in the sketch group.
+	value: [{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+	// The x coordinate.
+	x: number,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+	// The x coordinate.
+	x: number,
+	// The y coordinate.
+	y: number,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+}],
+}
+```
+
+#### Returns
+
+* `SketchGroup` - A sketch group is a collection of paths.
+```
+{
+	// The id of the sketch group.
+	id: uuid,
+	// The position of the sketch group.
+	position: [number],
+	// The rotation of the sketch group.
+	rotation: [number],
+	// The starting path.
+	start: {
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+},
+	// The paths in the sketch group.
+	value: [{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+	// The x coordinate.
+	x: number,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+	// The x coordinate.
+	x: number,
+	// The y coordinate.
+	y: number,
+} |
+{
+	// The from point.
+	from: [number],
+	// The name of the path.
+	name: string,
+	// The to point.
+	to: [number],
+	type: string,
+}],
+}
+```
+
+
+
 ### tau
 
 Return the value of `tau`. The full circle constant (τ). Equal to 2π.

src/wasm-lib/Cargo.lock

@@ -695,6 +695,20 @@ dependencies = [
  "syn 2.0.37",
 ]
 
+[[package]]
+name = "derive-docs"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c357dec14992ba88803535217ed83d6f6cd80efcb8fa8e3f8a30a9b84fadc1c7"
+dependencies = [
+ "convert_case",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_tokenstream",
+ "syn 2.0.37",
+]
+
 [[package]]
 name = "diff"
 version = "0.1.13"
@@ -1376,7 +1390,7 @@ dependencies = [
 
 [[package]]
 name = "kcl-lib"
-version = "0.1.31"
+version = "0.1.32"
 dependencies = [
  "anyhow",
  "async-recursion",
@@ -1385,7 +1399,7 @@ dependencies = [
  "clap",
  "criterion",
  "dashmap",
- "derive-docs",
+ "derive-docs 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "expectorate",
  "futures",
  "itertools 0.11.0",

src/wasm-lib/kcl/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "kcl-lib"
 description = "KittyCAD Language"
-version = "0.1.31"
+version = "0.1.32"
 edition = "2021"
 license = "MIT"
 
@@ -13,8 +13,8 @@ async-recursion = "1.0.5"
 async-trait = "0.1.73"
 clap = { version = "4.4.6", features = ["cargo", "derive", "env", "unicode"], optional = true }
 dashmap = "5.5.3"
-#derive-docs = { version = "0.1.4" }
-derive-docs = { path = "../derive-docs" }
+derive-docs = { version = "0.1.4" }
+#derive-docs = { path = "../derive-docs" }
 kittycad = { version = "0.2.27", default-features = false, features = ["js"] }
 lazy_static = "1.4.0"
 parse-display = "0.8.2"

src/wasm-lib/kcl/src/std/mod.rs

@@ -61,6 +61,8 @@ impl StdLib {
             Box::new(crate::std::sketch::StartSketchAt),
             Box::new(crate::std::sketch::Close),
             Box::new(crate::std::sketch::Arc),
+            Box::new(crate::std::sketch::TangentalArc),
+            Box::new(crate::std::sketch::TangentalArcTo),
             Box::new(crate::std::sketch::BezierCurve),
             Box::new(crate::std::math::Cos),
             Box::new(crate::std::math::Sin),

src/wasm-lib/kcl/src/std/sketch.rs

@@ -879,6 +879,214 @@ async fn inner_arc(data: ArcData, sketch_group: Box<SketchGroup>, args: Args) ->
     Ok(new_sketch_group)
 }
 
+/// Data to draw a tangental arc.
+#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, JsonSchema, ts_rs::TS)]
+#[ts(export)]
+#[serde(rename_all = "camelCase", untagged)]
+pub enum TangentalArcData {
+    RadiusAndOffset {
+        /// Radius of the arc.
+        /// Not to be confused with Raiders of the Lost Ark.
+        radius: f64,
+        /// Offset of the arc, in degrees.
+        offset: f64,
+    },
+    /// A point with a tag.
+    PointWithTag {
+        /// Where the arc should end. Must lie in the same plane as the current path pen position. Must not be colinear with current path pen position.
+        to: [f64; 2],
+        /// The tag.
+        tag: String,
+    },
+    /// A point where the arc should end. Must lie in the same plane as the current path pen position. Must not be colinear with current path pen position.
+    Point([f64; 2]),
+}
+
+/// Draw a tangental arc.
+pub async fn tangental_arc(args: Args) -> Result<MemoryItem, KclError> {
+    let (data, sketch_group): (TangentalArcData, Box<SketchGroup>) = args.get_data_and_sketch_group()?;
+
+    let new_sketch_group = inner_tangental_arc(data, sketch_group, args).await?;
+    Ok(MemoryItem::SketchGroup(new_sketch_group))
+}
+
+/// Draw an arc.
+#[stdlib {
+    name = "tangentalArc",
+}]
+async fn inner_tangental_arc(
+    data: TangentalArcData,
+    sketch_group: Box<SketchGroup>,
+    args: Args,
+) -> Result<Box<SketchGroup>, KclError> {
+    let from: Point2d = sketch_group.get_coords_from_paths()?;
+
+    let id = uuid::Uuid::new_v4();
+
+    let to = match &data {
+        TangentalArcData::RadiusAndOffset { radius, offset } => {
+            // Calculate the end point from the angle and radius.
+            let end_angle = Angle::from_degrees(*offset);
+            let start_angle = Angle::from_degrees(0.0);
+            let (_, to) = arc_center_and_end(from, start_angle, end_angle, *radius);
+
+            args.send_modeling_cmd(
+                id,
+                ModelingCmd::ExtendPath {
+                    path: sketch_group.id,
+                    segment: kittycad::types::PathSegment::TangentialArc {
+                        radius: *radius,
+                        offset: kittycad::types::Angle {
+                            unit: kittycad::types::UnitAngle::Degrees,
+                            value: *offset,
+                        },
+                    },
+                },
+            )
+            .await?;
+            to.into()
+        }
+        TangentalArcData::PointWithTag { to, .. } => {
+            args.send_modeling_cmd(
+                id,
+                ModelingCmd::ExtendPath {
+                    path: sketch_group.id,
+                    segment: kittycad::types::PathSegment::TangentialArcTo {
+                        angle_snap_increment: None,
+                        to: kittycad::types::Point3D {
+                            x: to[0],
+                            y: to[1],
+                            z: 0.0,
+                        },
+                    },
+                },
+            )
+            .await?;
+
+            *to
+        }
+        TangentalArcData::Point(to) => {
+            args.send_modeling_cmd(
+                id,
+                ModelingCmd::ExtendPath {
+                    path: sketch_group.id,
+                    segment: kittycad::types::PathSegment::TangentialArcTo {
+                        angle_snap_increment: None,
+                        to: kittycad::types::Point3D {
+                            x: to[0],
+                            y: to[1],
+                            z: 0.0,
+                        },
+                    },
+                },
+            )
+            .await?;
+
+            *to
+        }
+    };
+
+    let to = [from.x + to[0], from.y + to[1]];
+
+    let current_path = Path::ToPoint {
+        base: BasePath {
+            from: from.into(),
+            to,
+            name: "".to_string(),
+            geo_meta: GeoMeta {
+                id,
+                metadata: args.source_range.into(),
+            },
+        },
+    };
+
+    let mut new_sketch_group = sketch_group.clone();
+    new_sketch_group.value.push(current_path);
+
+    Ok(new_sketch_group)
+}
+
+/// Data to draw a tangental arc to a specific point.
+#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, JsonSchema, ts_rs::TS)]
+#[ts(export)]
+#[serde(rename_all = "camelCase", untagged)]
+pub enum TangentalArcToData {
+    /// A point with a tag.
+    PointWithTag {
+        /// Where the arc should end. Must lie in the same plane as the current path pen position. Must not be colinear with current path pen position.
+        to: [f64; 2],
+        /// The tag.
+        tag: String,
+    },
+    /// A point where the arc should end. Must lie in the same plane as the current path pen position. Must not be colinear with current path pen position.
+    Point([f64; 2]),
+}
+
+/// Draw a tangental arc to a specific point.
+pub async fn tangental_arc_to(args: Args) -> Result<MemoryItem, KclError> {
+    let (data, sketch_group): (TangentalArcToData, Box<SketchGroup>) = args.get_data_and_sketch_group()?;
+
+    let new_sketch_group = inner_tangental_arc_to(data, sketch_group, args).await?;
+    Ok(MemoryItem::SketchGroup(new_sketch_group))
+}
+
+/// Draw an arc.
+#[stdlib {
+    name = "tangentalArcTo",
+}]
+async fn inner_tangental_arc_to(
+    data: TangentalArcToData,
+    sketch_group: Box<SketchGroup>,
+    args: Args,
+) -> Result<Box<SketchGroup>, KclError> {
+    let from: Point2d = sketch_group.get_coords_from_paths()?;
+    let to = match &data {
+        TangentalArcToData::PointWithTag { to, .. } => to,
+        TangentalArcToData::Point(to) => to,
+    };
+
+    let delta = [to[0] - from.x, to[1] - from.y];
+
+    let id = uuid::Uuid::new_v4();
+
+    args.send_modeling_cmd(
+        id,
+        ModelingCmd::ExtendPath {
+            path: sketch_group.id,
+            segment: kittycad::types::PathSegment::TangentialArcTo {
+                angle_snap_increment: None,
+                to: kittycad::types::Point3D {
+                    x: delta[0],
+                    y: delta[1],
+                    z: 0.0,
+                },
+            },
+        },
+    )
+    .await?;
+
+    let current_path = Path::ToPoint {
+        base: BasePath {
+            from: from.into(),
+            to: *to,
+            name: if let TangentalArcToData::PointWithTag { tag, .. } = data {
+                tag.to_string()
+            } else {
+                "".to_string()
+            },
+            geo_meta: GeoMeta {
+                id,
+                metadata: args.source_range.into(),
+            },
+        },
+    };
+
+    let mut new_sketch_group = sketch_group.clone();
+    new_sketch_group.value.push(current_path);
+
+    Ok(new_sketch_group)
+}
+
 /// Data to draw a bezier curve.
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
 #[ts(export)]

src/wasm-lib/kcl/src/std/utils.rs

@@ -10,6 +10,15 @@ pub struct Angle {
     degrees: f64,
 }
 
+impl From<kittycad::types::Angle> for Angle {
+    fn from(angle: kittycad::types::Angle) -> Self {
+        match angle.unit {
+            kittycad::types::UnitAngle::Degrees => Self::from_degrees(angle.value),
+            kittycad::types::UnitAngle::Radians => Self::from_radians(angle.value),
+        }
+    }
+}
+
 impl Angle {
     const ZERO: Self = Self { degrees: 0.0 };
     /// Make an angle of the given degrees.

src/wasm-lib/tests/executor/main.rs

@@ -252,3 +252,42 @@ box(-20, -5, 10)"#;
     let result = execute_and_snapshot(code).await.unwrap();
     twenty_twenty::assert_image("tests/executor/outputs/negative_args.png", &result, 1.0);
 }
+
+#[tokio::test(flavor = "multi_thread")]
+async fn test_basic_tangental_arc() {
+    let code = r#"const boxSketch = startSketchAt([0, 0])
+    |> line([0, 10], %)
+    |> tangentalArc({radius: 5, offset: 90}, %)
+    |> line([5, -15], %)
+    |> extrude(10, %)
+"#;
+
+    let result = execute_and_snapshot(code).await.unwrap();
+    twenty_twenty::assert_image("tests/executor/outputs/tangental_arc.png", &result, 1.0);
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn test_basic_tangental_arc_with_point() {
+    let code = r#"const boxSketch = startSketchAt([0, 0])
+    |> line([0, 10], %)
+    |> tangentalArc([-5, 5], %)
+    |> line([5, -15], %)
+    |> extrude(10, %)
+"#;
+
+    let result = execute_and_snapshot(code).await.unwrap();
+    twenty_twenty::assert_image("tests/executor/outputs/tangental_arc_with_point.png", &result, 1.0);
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn test_basic_tangental_arc_to() {
+    let code = r#"const boxSketch = startSketchAt([0, 0])
+    |> line([0, 10], %)
+    |> tangentalArcTo([-5, 15], %)
+    |> line([5, -15], %)
+    |> extrude(10, %)
+"#;
+
+    let result = execute_and_snapshot(code).await.unwrap();
+    twenty_twenty::assert_image("tests/executor/outputs/tangental_arc_to.png", &result, 1.0);
+}