Update src/lang/std/sketch.ts

Co-authored-by: Jonathan Tran <jonnytran@gmail.com>

docs/kcl/std.json

@@ -211843,8 +211843,8 @@
   },
   {
     "name": "tangentialArc",
-    "summary": "Starting at the current sketch's origin, draw a curved line segment along",
-    "description": "some part of an imaginary circle of the specified radius.\nThe arc is constructed such that the last line segment is placed tangent to the imaginary circle of the specified radius. The resulting arc is the segment of the imaginary circle from that tangent point for 'offset' degrees along the imaginary circle.",
+    "summary": "Draw a curved line segment along some part of an imaginary circle of the specified radius.",
+    "description": "If `relative` is true, the curve starts at the end of the previous path segment (i.e. the location of the \"pen\" which draws these lines). If `relative` is false, starts from the current sketch's origin.\nThe arc is constructed such that the last line segment is placed tangent to the imaginary circle of the specified radius. The resulting arc is the segment of the imaginary circle from that tangent point for 'offset' degrees along the imaginary circle.",
     "tags": [],
     "args": [
       {
@@ -211871,16 +211871,6 @@
                   "format": "double"
                 }
               }
-            },
-            {
-              "description": "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.",
-              "type": "array",
-              "items": {
-                "type": "number",
-                "format": "double"
-              },
-              "maxItems": 2,
-              "minItems": 2
             }
           ]
         },
@@ -218589,6 +218579,14 @@
         },
         "required": true
       },
+      {
+        "name": "relative",
+        "type": "bool",
+        "schema": {
+          "type": "boolean"
+        },
+        "required": true
+      },
       {
         "name": "sketch_group",
         "type": "SketchGroup",
@@ -225269,7 +225267,7 @@
     "unpublished": false,
     "deprecated": false,
     "examples": [
-      "const exampleSketch = startSketchOn('XZ')\n  |> startProfileAt([0, 0], %)\n  |> angledLine({ angle: 60, length: 10 }, %)\n  |> tangentialArcTo([15, 15], %)\n  |> line([10, -15], %)\n  |> close(%)\n\nconst example = extrude(10, exampleSketch)"
+      "const exampleSketch = startSketchOn('XZ')\n  |> startProfileAt([0, 0], %)\n  |> angledLine({ angle: 60, length: 10 }, %)\n  |> tangentialArcTo([15, 15], false, %)\n  |> line([10, -15], %)\n  |> close(%)\n\nconst example = extrude(10, exampleSketch)"
     ]
   },
   {

docs/kcl/tangentialArc.md

@@ -1,12 +1,12 @@
 ---
 title: "tangentialArc"
-excerpt: "Starting at the current sketch's origin, draw a curved line segment along"
+excerpt: "Draw a curved line segment along some part of an imaginary circle of the specified radius."
 layout: manual
 ---
 
-Starting at the current sketch's origin, draw a curved line segment along
+Draw a curved line segment along some part of an imaginary circle of the specified radius.
 
-some part of an imaginary circle of the specified radius.
+If `relative` is true, the curve starts at the end of the previous path segment (i.e. the location of the "pen" which draws these lines). If `relative` is false, starts from the current sketch's origin.
 The arc is constructed such that the last line segment is placed tangent to the imaginary circle of the specified radius. The resulting arc is the segment of the imaginary circle from that tangent point for 'offset' degrees along the imaginary circle.
 
 ```js
@@ -37,8 +37,7 @@ const example = extrude(10, exampleSketch)
 	offset: number,
 	// Radius of the arc. Not to be confused with Raiders of the Lost Ark.
 	radius: number,
-} |
-[number, number]
+}
 ```
 * `sketch_group`: `SketchGroup` - A sketch group is a collection of paths. (REQUIRED)
 ```js

docs/kcl/tangentialArcTo.md

@@ -9,7 +9,7 @@ Starting at the current sketch's origin, draw a curved line segment along
 some part of an imaginary circle until it reaches the desired (x, y) coordinates.
 
 ```js
-tangentialArcTo(to: [number], sketch_group: SketchGroup, tag?: TagDeclarator) -> SketchGroup
+tangentialArcTo(to: [number], relative: bool, sketch_group: SketchGroup, tag?: TagDeclarator) -> SketchGroup
 ```
 
 ### Examples
@@ -18,7 +18,7 @@ tangentialArcTo(to: [number], sketch_group: SketchGroup, tag?: TagDeclarator) ->
 const exampleSketch = startSketchOn('XZ')
   |> startProfileAt([0, 0], %)
   |> angledLine({ angle: 60, length: 10 }, %)
-  |> tangentialArcTo([15, 15], %)
+  |> tangentialArcTo([15, 15], false, %)
   |> line([10, -15], %)
   |> close(%)
 
@@ -30,6 +30,7 @@ const example = extrude(10, exampleSketch)
 ### Arguments
 
 * `to`: `[number]` (REQUIRED)
+* `relative`: `bool` (REQUIRED)
 * `sketch_group`: `SketchGroup` - A sketch group is a collection of paths. (REQUIRED)
 ```js
 {

e2e/playwright/editor-tests.spec.ts

@@ -648,7 +648,7 @@ test.describe('Editor tests', () => {
         `const sketch001 = startSketchOn('XZ')
     |> startProfileAt([4.61, -14.01], %)
     |> line([12.73, -0.09], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> close(%)`
       )
     })
@@ -701,7 +701,7 @@ test.describe('Editor tests', () => {
 
     // expect the code to have changed
     await expect(page.locator('.cm-content')).toHaveText(
-      `const sketch001 = startSketchOn('XZ')  |> startProfileAt([4.61, -14.01], %)  |> line([12.73, -0.09], %)  |> tangentialArcTo([24.95, -5.38], %)  |> close(%)const extrude001 = extrude(5, sketch001)`
+      `const sketch001 = startSketchOn('XZ')  |> startProfileAt([4.61, -14.01], %)  |> line([12.73, -0.09], %)  |> tangentialArcTo([24.95, -5.38], false, %)  |> close(%)const extrude001 = extrude(5, sketch001)`
     )
 
     // Now hit undo
@@ -714,7 +714,7 @@ test.describe('Editor tests', () => {
       .toHaveText(`const sketch001 = startSketchOn('XZ')
     |> startProfileAt([4.61, -14.01], %)
     |> line([12.73, -0.09], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> close(%)`)
   })
 
@@ -728,7 +728,7 @@ test.describe('Editor tests', () => {
         `const sketch001 = startSketchOn('XZ')
     |> startProfileAt([4.61, -14.01], %)
     |> line([12.73, -0.09], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> close(%)
     |> extrude(5, %)`
       )
@@ -819,7 +819,7 @@ test.describe('Editor tests', () => {
       .toHaveText(`const sketch001 = startSketchOn('XZ')
     |> startProfileAt([7.12, -16.82], %)
     |> line([15.4, -2.74], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> line([2.65, -2.69], %)
     |> close(%)
     |> extrude(5, %)`)
@@ -833,7 +833,7 @@ test.describe('Editor tests', () => {
       .toHaveText(`const sketch001 = startSketchOn('XZ')
     |> startProfileAt([7.12, -16.82], %)
     |> line([15.4, -2.74], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> close(%)
     |> extrude(5, %)`)
 
@@ -846,7 +846,7 @@ test.describe('Editor tests', () => {
       .toHaveText(`const sketch001 = startSketchOn('XZ')
     |> startProfileAt([7.12, -16.82], %)
     |> line([12.73, -0.09], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> close(%)
     |> extrude(5, %)`)
 
@@ -860,7 +860,7 @@ test.describe('Editor tests', () => {
       .toHaveText(`const sketch001 = startSketchOn('XZ')
     |> startProfileAt([4.61, -14.01], %)
     |> line([12.73, -0.09], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> close(%)
     |> extrude(5, %)`)
   })

e2e/playwright/sketch-tests.spec.ts

@@ -61,7 +61,7 @@ test.describe('Sketch tests', () => {
   const part002 = startSketchOn('-XZ')
     ${startProfileAt3}
     |> xLine(width / 4, %)
-    |> tangentialArcTo([width / 2, 0], %)
+    |> tangentialArcTo([width / 2, 0], false, %)
     |> xLine(-width / 4 + wireRadius, %)
     |> yLine(wireOffset, %)
     |> arc({
@@ -115,7 +115,7 @@ test.describe('Sketch tests', () => {
         `const sketch001 = startSketchOn('XZ')
   |> startProfileAt([4.61, -14.01], %)
   |> line([12.73, -0.09], %)
-  |> tangentialArcTo([24.95, -5.38], %)`
+  |> tangentialArcTo([24.95, -5.38], false, %)`
       )
     })
 
@@ -125,7 +125,7 @@ test.describe('Sketch tests', () => {
 
     await expect(async () => {
       await page.mouse.click(700, 200)
-      await page.getByText('tangentialArcTo([24.95, -5.38], %)').click()
+      await page.getByText('tangentialArcTo([24.95, -5.38], false, %)').click()
       await expect(
         page.getByRole('button', { name: 'Edit Sketch' })
       ).toBeEnabled({ timeout: 1000 })
@@ -134,7 +134,7 @@ test.describe('Sketch tests', () => {
 
     await page.waitForTimeout(600) // wait for animation
 
-    await page.getByText('tangentialArcTo([24.95, -5.38], %)').click()
+    await page.getByText('tangentialArcTo([24.95, -5.38], false, %)').click()
     await page.keyboard.press('End')
     await page.keyboard.down('Shift')
     await page.keyboard.press('ArrowUp')
@@ -193,7 +193,7 @@ test.describe('Sketch tests', () => {
           `const sketch001 = startSketchOn('XZ')
       |> startProfileAt([4.61, -14.01], %)
       |> line([12.73, -0.09], %)
-      |> tangentialArcTo([24.95, -5.38], %)
+      |> tangentialArcTo([24.95, -5.38], false, %)
       |> close(%)`
         )
       })
@@ -235,7 +235,7 @@ test.describe('Sketch tests', () => {
           .toHaveText(`const sketch001 = startSketchOn('XZ')
       |> startProfileAt([4.61, -14.01], %)
       |> line([12.73, -0.09], %)
-      |> tangentialArcTo([24.95, -5.38], %)
+      |> tangentialArcTo([24.95, -5.38], false, %)
       |> close(%)`)
       } else {
         // Ensure we don't see the code.
@@ -312,7 +312,7 @@ test.describe('Sketch tests', () => {
         .toHaveText(`const sketch001 = startSketchOn('XZ')
       |> startProfileAt([6.44, -12.07], %)
       |> line([14.72, 1.97], %)
-      |> tangentialArcTo([24.95, -5.38], %)
+      |> tangentialArcTo([24.95, -5.38], false, %)
       |> line([1.97, 2.06], %)
       |> close(%)`)
     }
@@ -356,7 +356,7 @@ test.describe('Sketch tests', () => {
           `const sketch001 = startSketchOn('XZ')
     |> startProfileAt([4.61, -14.01], %)
     |> line([12.73, -0.09], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> close(%)
     |> extrude(5, %)`
         )
@@ -443,7 +443,7 @@ test.describe('Sketch tests', () => {
         .toHaveText(`const sketch001 = startSketchOn('XZ')
     |> startProfileAt([7.12, -16.82], %)
     |> line([15.4, -2.74], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> line([2.65, -2.69], %)
     |> close(%)
     |> extrude(5, %)`)
@@ -460,7 +460,7 @@ test.describe('Sketch tests', () => {
         `const sketch001 = startSketchOn('XZ')
     |> startProfileAt([4.61, -14.01], %)
     |> line([12.73, -0.09], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> close(%)
     |> revolve({ axis: "X",}, %)`
       )
@@ -546,7 +546,7 @@ test.describe('Sketch tests', () => {
       .toHaveText(`const sketch001 = startSketchOn('XZ')
     |> startProfileAt([6.44, -12.07], %)
     |> line([14.72, 1.97], %)
-    |> tangentialArcTo([24.95, -5.38], %)
+    |> tangentialArcTo([24.95, -5.38], false, %)
     |> line([1.97, 2.06], %)
     |> close(%)
     |> revolve({ axis: "X" }, %)`)

e2e/playwright/snapshot-tests.spec.ts

@@ -570,7 +570,7 @@ test.describe(
       await page.mouse.click(startXPx + PUR * 30, 500 - PUR * 20)
 
       code += `
-  |> tangentialArcTo([21.7, -2.44], %)`
+  |> tangentialArcTo([21.7, -2.44], false, %)`
       await expect(u.codeLocator).toHaveText(code)
 
       // click tangential arc tool again to unequip it
@@ -673,7 +673,7 @@ test.describe(
       await page.mouse.click(startXPx + PUR * 30, 500 - PUR * 20)
 
       code += `
-  |> tangentialArcTo([551.2, -62.01], %)`
+  |> tangentialArcTo([551.2, -62.01], false, %)`
       await expect(u.codeLocator).toHaveText(code)
 
       await page

e2e/playwright/storageStates.ts

@@ -82,7 +82,7 @@ export const TEST_CODE_GIZMO = `const part001 = startSketchOn('XZ')
   intersectTag: a,
   offset: 0
 }, %)
-|> tangentialArcTo([13.14 + 0, 13.14], %)
+|> tangentialArcTo([13.14 + 0, 13.14], false, %)
 |> close(%)
 |> extrude(5 + 7, %)
 `

e2e/playwright/testing-segment-overlays.spec.ts

@@ -200,7 +200,7 @@ test.describe('Testing segment overlays', () => {
           intersectTag: a,
           offset: 9
         }, %)
-    |> tangentialArcTo([5 + 3.14 + 13, 20 + 3.14], %)
+    |> tangentialArcTo([5 + 3.14 + 13, 20 + 3.14], false, %)
         `
         )
       })
@@ -438,7 +438,7 @@ const part001 = startSketchOn('XZ')
           intersectTag: a,
           offset: 9
         }, %)
-    |> tangentialArcTo([3.14 + 13, 3.14], %)
+    |> tangentialArcTo([3.14 + 13, 3.14], false, %)
         `
         )
         localStorage.setItem('disableAxis', 'true')
@@ -566,7 +566,7 @@ const part001 = startSketchOn('XZ')
           intersectTag: a,
           offset: 9
         }, %)
-    |> tangentialArcTo([3.14 + 13, 1.14], %)
+    |> tangentialArcTo([3.14 + 13, 1.14], false, %)
         `
         )
         localStorage.setItem('disableAxis', 'true')
@@ -722,7 +722,7 @@ const part001 = startSketchOn('XZ')
           intersectTag: a,
           offset: 9
         }, %)
-    |> tangentialArcTo([3.14 + 13, -3.14], %)
+    |> tangentialArcTo([3.14 + 13, -3.14], false, %)
         `
         )
         localStorage.setItem('disableAxis', 'true')
@@ -755,9 +755,10 @@ const part001 = startSketchOn('XZ')
       await clickConstrained({
         hoverPos: { x: tangentialArcTo.x, y: tangentialArcTo.y },
         constraintType: 'xAbsolute',
-        expectBeforeUnconstrained: 'tangentialArcTo([3.14 + 13, -3.14], %)',
-        expectAfterUnconstrained: 'tangentialArcTo([16.14, -3.14], %)',
-        expectFinal: 'tangentialArcTo([xAbs001, -3.14], %)',
+        expectBeforeUnconstrained:
+          'tangentialArcTo([3.14 + 13, -3.14], false, %)',
+        expectAfterUnconstrained: 'tangentialArcTo([16.14, -3.14], false, %)',
+        expectFinal: 'tangentialArcTo([xAbs001, -3.14], false, %)',
         ang: ang + 180,
         steps: 6,
         locator: '[data-overlay-toolbar-index="12"]',
@@ -766,9 +767,11 @@ const part001 = startSketchOn('XZ')
       await clickUnconstrained({
         hoverPos: { x: tangentialArcTo.x, y: tangentialArcTo.y },
         constraintType: 'yAbsolute',
-        expectBeforeUnconstrained: 'tangentialArcTo([xAbs001, -3.14], %)',
-        expectAfterUnconstrained: 'tangentialArcTo([xAbs001, yAbs001], %)',
-        expectFinal: 'tangentialArcTo([xAbs001, -3.14], %)',
+        expectBeforeUnconstrained:
+          'tangentialArcTo([xAbs001, -3.14], false, %)',
+        expectAfterUnconstrained:
+          'tangentialArcTo([xAbs001, yAbs001], false, %)',
+        expectFinal: 'tangentialArcTo([xAbs001, -3.14], false, %)',
         ang: ang + 180,
         steps: 10,
         locator: '[data-overlay-toolbar-index="12"]',
@@ -835,7 +838,7 @@ const part001 = startSketchOn('XZ')
        intersectTag: a,
        offset: 9
      }, %)
-  |> tangentialArcTo([3.14 + 13, 1.14], %)
+  |> tangentialArcTo([3.14 + 13, 1.14], false, %)
         `
         )
         localStorage.setItem('disableAxis', 'true')
@@ -866,7 +869,7 @@ const part001 = startSketchOn('XZ')
       let ang = await u.getAngle(`[data-overlay-index="${12}"]`)
       await deleteSegmentSequence({
         hoverPos: { x: segmentToDelete.x, y: segmentToDelete.y },
-        codeToBeDeleted: 'tangentialArcTo([3.14 + 13, 1.14], %)',
+        codeToBeDeleted: 'tangentialArcTo([3.14 + 13, 1.14], false, %)',
         stdLibFnName: 'tangentialArcTo',
         ang: ang + 180,
         steps: 6,

e2e/playwright/testing-selections.spec.ts

@@ -476,7 +476,7 @@ const sketch002 = startSketchOn(launderExtrudeThroughVar, seg02)
           intersectTag: a,
           offset: 0
         }, %)
-    |> tangentialArcTo([13.14 + 0, 13.14], %)
+    |> tangentialArcTo([13.14 + 0, 13.14], false, %)
     |> close(%)
     |> extrude(5 + 7, %)
   `
@@ -680,7 +680,7 @@ const extrude001 = extrude(10, sketch001)`
       },
       {
         pos: [1107, 161],
-        expectedCode: 'tangentialArcTo([167.95, -28.85], %)',
+        expectedCode: 'tangentialArcTo([167.95, -28.85], false, %)',
       },
     ] as const
     await page.addInitScript(

src/lang/modifyAst.test.ts

@@ -584,7 +584,7 @@ describe('Testing removeSingleConstraintInfo', () => {
         intersectTag: a,
         offset: 0 + 0
       }, %)
-  |> tangentialArcTo([3.14 + 0, 13.14 + 0], %)`
+  |> tangentialArcTo([3.14 + 0, 13.14 + 0], false, %)`
     test.each([
       [' line([3 + 0, 4], %)', 'arrayIndex', 1],
       [
@@ -626,7 +626,7 @@ describe('Testing removeSingleConstraintInfo', () => {
         'objectProperty',
         'offset',
       ],
-      ['tangentialArcTo([3.14 + 0, 13.14], %)', 'arrayIndex', 1],
+      ['tangentialArcTo([3.14 + 0, 13.14], false, %)', 'arrayIndex', 1],
     ])('stdlib fn: %s', async (expectedFinish, key, value) => {
       const ast = parse(code)
       if (err(ast)) throw ast

src/lang/modifyAst/addFillet.test.ts

@@ -82,8 +82,8 @@ describe('Testing addFillet', () => {
         |> line([60.04, -55.72], %)
         |> line([1.29, -115.74], %)
         |> line([-87.24, -47.08], %)
-        |> tangentialArcTo([56.15, -94.58], %)
-        |> tangentialArcTo([14.68, -104.52], %)
+        |> tangentialArcTo([56.15, -94.58], false, %)
+        |> tangentialArcTo([14.68, -104.52], false, %)
         |> lineTo([profileStartX(%), profileStartY(%)], %)
         |> close(%)
       const extrude001 = extrude(50, sketch001)
@@ -97,8 +97,8 @@ describe('Testing addFillet', () => {
   |> line([60.04, -55.72], %, $seg01)
   |> line([1.29, -115.74], %)
   |> line([-87.24, -47.08], %)
-  |> tangentialArcTo([56.15, -94.58], %)
-  |> tangentialArcTo([14.68, -104.52], %)
+  |> tangentialArcTo([56.15, -94.58], false, %)
+  |> tangentialArcTo([14.68, -104.52], false, %)
   |> lineTo([profileStartX(%), profileStartY(%)], %)
   |> close(%)
 const extrude001 = extrude(50, sketch001)
@@ -125,8 +125,8 @@ const extrude001 = extrude(50, sketch001)
           |> line([60.04, -55.72], %)
           |> line([1.29, -115.74], %)
           |> line([-87.24, -47.08], %, $seg01)
-          |> tangentialArcTo([56.15, -94.58], %)
-          |> tangentialArcTo([14.68, -104.52], %)
+          |> tangentialArcTo([56.15, -94.58], false, %)
+          |> tangentialArcTo([14.68, -104.52], false, %)
           |> lineTo([profileStartX(%), profileStartY(%)], %)
           |> close(%)
         const extrude001 = extrude(50, sketch001)
@@ -140,8 +140,8 @@ const extrude001 = extrude(50, sketch001)
   |> line([60.04, -55.72], %, $seg02)
   |> line([1.29, -115.74], %)
   |> line([-87.24, -47.08], %, $seg01)
-  |> tangentialArcTo([56.15, -94.58], %)
-  |> tangentialArcTo([14.68, -104.52], %)
+  |> tangentialArcTo([56.15, -94.58], false, %)
+  |> tangentialArcTo([14.68, -104.52], false, %)
   |> lineTo([profileStartX(%), profileStartY(%)], %)
   |> close(%)
 const extrude001 = extrude(50, sketch001)
@@ -168,8 +168,8 @@ const extrude001 = extrude(50, sketch001)
           |> line([60.04, -55.72], %)
           |> line([1.29, -115.74], %)
           |> line([-87.24, -47.08], %, $seg03)
-          |> tangentialArcTo([56.15, -94.58], %)
-          |> tangentialArcTo([14.68, -104.52], %)
+          |> tangentialArcTo([56.15, -94.58], false, %)
+          |> tangentialArcTo([14.68, -104.52], false, %)
           |> lineTo([profileStartX(%), profileStartY(%)], %)
           |> close(%)
         const extrude001 = extrude(50, sketch001)
@@ -183,8 +183,8 @@ const extrude001 = extrude(50, sketch001)
   |> line([60.04, -55.72], %)
   |> line([1.29, -115.74], %)
   |> line([-87.24, -47.08], %, $seg03)
-  |> tangentialArcTo([56.15, -94.58], %)
-  |> tangentialArcTo([14.68, -104.52], %)
+  |> tangentialArcTo([56.15, -94.58], false, %)
+  |> tangentialArcTo([14.68, -104.52], false, %)
   |> lineTo([profileStartX(%), profileStartY(%)], %)
   |> close(%)
 const extrude001 = extrude(50, sketch001)
@@ -210,8 +210,8 @@ const extrude001 = extrude(50, sketch001)
             |> line([60.04, -55.72], %)
             |> line([1.29, -115.74], %)
             |> line([-87.24, -47.08], %, $seg03)
-            |> tangentialArcTo([56.15, -94.58], %)
-            |> tangentialArcTo([14.68, -104.52], %)
+            |> tangentialArcTo([56.15, -94.58], false, %)
+            |> tangentialArcTo([14.68, -104.52], false, %)
             |> lineTo([profileStartX(%), profileStartY(%)], %)
             |> close(%)
           const extrude001 = extrude(50, sketch001)
@@ -225,8 +225,8 @@ const extrude001 = extrude(50, sketch001)
   |> line([60.04, -55.72], %, $seg01)
   |> line([1.29, -115.74], %)
   |> line([-87.24, -47.08], %, $seg03)
-  |> tangentialArcTo([56.15, -94.58], %)
-  |> tangentialArcTo([14.68, -104.52], %)
+  |> tangentialArcTo([56.15, -94.58], false, %)
+  |> tangentialArcTo([14.68, -104.52], false, %)
   |> lineTo([profileStartX(%), profileStartY(%)], %)
   |> close(%)
 const extrude001 = extrude(50, sketch001)

src/lang/std/sketch.test.ts

@@ -270,7 +270,7 @@ describe('testing getConstraintInfo', () => {
     intersectTag: 'a',
     offset: 0
   }, %)
-  |> tangentialArcTo([3.14, 13.14], %)`
+  |> tangentialArcTo([3.14, 13.14], false, %)`
     const ast = parse(code)
     test.each([
       [
@@ -629,7 +629,7 @@ describe('testing getConstraintInfo', () => {
          intersectTag: 'a',
          offset: 0
        }, %)
-    |> tangentialArcTo([3.14, 13.14], %)`
+    |> tangentialArcTo([3.14, 13.14], false, %)`
     const ast = parse(code)
     test.each([
       [
@@ -783,7 +783,7 @@ describe('testing getConstraintInfo', () => {
          intersectTag: 'a',
          offset: 0 + 0
        }, %)
-    |> tangentialArcTo([3.14 + 0, 13.14 + 0], %)`
+    |> tangentialArcTo([3.14 + 0, 13.14 + 0], false, %)`
     const ast = parse(code)
     test.each([
       [

src/lang/std/sketch.ts

@@ -811,6 +811,7 @@ export const tangentialArcTo: SketchLineHelper = {
     }
     const newLine = createCallExpression('tangentialArcTo', [
       createArrayExpression([toX, toY]),
+      createLiteral(false),
       createPipeSubstitution(),
     ])
     if (pipe.type === 'PipeExpression') {

src/wasm-lib/kcl/src/parser/parser_impl.rs

@@ -3152,7 +3152,7 @@ mod snapshot_tests {
         a,
         r#"const boxSketch = startSketchAt([0, 0])
     |> line([0, 10], %)
-    |> tangentialArc([-5, 5], %)
+    |> tangentialArcTo([-5, 5], true, %)
     |> line([5, -15], %)
     |> extrude(10, %)
 "#

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

@@ -5,7 +5,7 @@ use serde::de::DeserializeOwned;
 
 use super::{shapes::SketchSurfaceOrGroup, sketch::FaceTag, FnAsArg};
 use crate::{
-    ast::types::{parse_json_number_as_f64, TagDeclarator},
+    ast::types::{parse_json_number_as_f64, KclNone, TagDeclarator},
     errors::{KclError, KclErrorDetails},
     executor::{
         DynamicState, ExecutorContext, ExtrudeGroup, ExtrudeGroupSet, ExtrudeSurface, MemoryItem, Metadata,
@@ -479,11 +479,15 @@ where
 {
     fn from_args(args: &'a Args, i: usize) -> Result<Self, KclError> {
         let Some(arg) = args.args.get(i) else { return Ok(None) };
+        if let Some(_kcl_none) = KclNone::from_mem_item(arg) {
+            return Ok(None);
+        }
         let Some(val) = T::from_mem_item(arg) else {
             return Err(KclError::Semantic(KclErrorDetails {
                 message: format!(
-                    "Argument at index {i} was supposed to be type {} but wasn't",
-                    type_name::<T>()
+                    "Argument at index {i} was supposed to be type {} but wasn't, it was {:?}",
+                    type_name::<T>(),
+                    arg,
                 ),
                 source_ranges: vec![args.source_range],
             }));
@@ -615,6 +619,7 @@ impl_from_arg_via_json!(u32);
 impl_from_arg_via_json!(u64);
 impl_from_arg_via_json!(f64);
 impl_from_arg_via_json!(bool);
+impl_from_arg_via_json!(KclNone);
 
 impl_from_arg_for_array!(2);
 impl_from_arg_for_array!(3);

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

@@ -14,7 +14,7 @@ use crate::{
     errors::{KclError, KclErrorDetails},
     executor::{
         BasePath, ExtrudeGroup, Face, GeoMeta, MemoryItem, Path, Plane, PlaneType, Point2d, Point3d, SketchGroup,
-        SketchGroupSet, SketchSurface, SourceRange, TagEngineInfo, TagIdentifier, UserVal,
+        SketchGroupSet, SketchSurface, TagEngineInfo, TagIdentifier, UserVal,
     },
     std::{
         utils::{
@@ -1634,8 +1634,6 @@ pub enum TangentialArcData {
         /// Offset of the arc, in degrees.
         offset: f64,
     },
-    /// 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 tangential arc.
@@ -1647,8 +1645,11 @@ pub async fn tangential_arc(args: Args) -> Result<MemoryItem, KclError> {
     Ok(MemoryItem::SketchGroup(new_sketch_group))
 }
 
-/// Starting at the current sketch's origin, draw a curved line segment along
-/// some part of an imaginary circle of the specified radius.
+/// Draw a curved line segment along some part of an imaginary circle of the specified radius.
+///
+/// If `relative` is true, the curve starts at the end of the previous path segment
+/// (i.e. the location of the "pen" which draws these lines). If `relative` is false,
+/// starts from the current sketch's origin.
 ///
 /// The arc is constructed such that the last line segment is placed tangent
 /// to the imaginary circle of the specified radius. The resulting arc is the
@@ -1728,13 +1729,6 @@ async fn inner_tangential_arc(
             .await?;
             (center, to.into(), ccw)
         }
-        TangentialArcData::Point(to) => {
-            args.batch_modeling_cmd(id, tan_arc_to(&sketch_group, &to)).await?;
-            // TODO: Figure out these calculations.
-            let ccw = false;
-            let center = Point2d { x: 0.0, y: 0.0 };
-            (center, to, ccw)
-        }
     };
 
     let current_path = Path::TangentialArc {
@@ -1775,32 +1769,13 @@ fn tan_arc_to(sketch_group: &SketchGroup, to: &[f64; 2]) -> ModelingCmd {
     }
 }
 
-fn too_few_args(source_range: SourceRange) -> KclError {
-    KclError::Syntax(KclErrorDetails {
-        source_ranges: vec![source_range],
-        message: "too few arguments".to_owned(),
-    })
-}
-
-fn get_arg<I: Iterator>(it: &mut I, src: SourceRange) -> Result<I::Item, KclError> {
-    it.next().ok_or_else(|| too_few_args(src))
-}
-
 /// Draw a tangential arc to a specific point.
 pub async fn tangential_arc_to(args: Args) -> Result<MemoryItem, KclError> {
-    let src = args.source_range;
-
     // Get arguments to function call
-    let mut it = args.args.iter();
-    let to: [f64; 2] = get_arg(&mut it, src)?.get_json()?;
-    let sketch_group: Box<SketchGroup> = get_arg(&mut it, src)?.get_json()?;
-    let tag = if let Ok(memory_item) = get_arg(&mut it, src) {
-        memory_item.get_json_opt()?
-    } else {
-        None
-    };
+    let (to, relative, sketch_group, tag): ([f64; 2], bool, Box<SketchGroup>, Option<TagDeclarator>) =
+        super::args::FromArgs::from_args(&args, 0)?;
 
-    let new_sketch_group = inner_tangential_arc_to(to, sketch_group, tag, args).await?;
+    let new_sketch_group = inner_tangential_arc_to(to, relative, sketch_group, tag, args).await?;
     Ok(MemoryItem::SketchGroup(new_sketch_group))
 }
 
@@ -1815,7 +1790,7 @@ pub async fn tangential_arc_to(args: Args) -> Result<MemoryItem, KclError> {
 ///     angle: 60,
 ///     length: 10,
 ///   }, %)
-///   |> tangentialArcTo([15, 15], %)
+///   |> tangentialArcTo([15, 15], false, %)
 ///   |> line([10, -15], %)
 ///   |> close(%)
 ///
@@ -1826,6 +1801,7 @@ pub async fn tangential_arc_to(args: Args) -> Result<MemoryItem, KclError> {
 }]
 async fn inner_tangential_arc_to(
     to: [f64; 2],
+    relative: bool,
     sketch_group: Box<SketchGroup>,
     tag: Option<TagDeclarator>,
     args: Args,
@@ -1845,9 +1821,13 @@ async fn inner_tangential_arc_to(
         obtuse: true,
     });
 
-    let delta = [to_x - from.x, to_y - from.y];
+    let to = if relative {
+        [to_x, to_y]
+    } else {
+        [to_x - from.x, to_y - from.y]
+    };
     let id = uuid::Uuid::new_v4();
-    args.batch_modeling_cmd(id, tan_arc_to(&sketch_group, &delta)).await?;
+    args.batch_modeling_cmd(id, tan_arc_to(&sketch_group, &to)).await?;
 
     let current_path = Path::TangentialArcTo {
         base: BasePath {

src/wasm-lib/tests/executor/inputs/i_shape.kcl

@@ -9,40 +9,40 @@ let corner_radius = 5.0
 // because your wrist isn't a perfect cylindrical surface
 let brace_base = startSketchAt([corner_radius, 0])
   |> line([width - corner_radius, 0.0], %)
-  |> tangentialArc([corner_radius, corner_radius], %)
+  |> tangentialArcTo([corner_radius, corner_radius], true, %)
   |> yLine(25.0 - corner_radius, %)
-  |> tangentialArc([-corner_radius, corner_radius], %)
+  |> tangentialArcTo([-corner_radius, corner_radius], true, %)
   |> xLine(-(d_wrist_circumference[0] - (corner_radius * 2)), %)
-  |> tangentialArc([-corner_radius, corner_radius], %)
+  |> tangentialArcTo([-corner_radius, corner_radius], true, %)
   |> yLine(length - 25.0 - 23.0 - (corner_radius * 2), %)
-  |> tangentialArc([corner_radius, corner_radius], %)
+  |> tangentialArcTo([corner_radius, corner_radius], true, %)
   |> xLine(15.0 - (corner_radius * 2), %)
-  |> tangentialArc([corner_radius, corner_radius], %)
+  |> tangentialArcTo([corner_radius, corner_radius], true, %)
   |> yLine(23.0 - corner_radius, %)
-  |> tangentialArc([-corner_radius, corner_radius], %)
+  |> tangentialArcTo([-corner_radius, corner_radius], true, %)
   |> xLine(-(hand_thickness + 15.0 + 15.0 - (corner_radius * 2)), %)
-  |> tangentialArc([-corner_radius, -corner_radius], %)
+  |> tangentialArcTo([-corner_radius, -corner_radius], true, %)
   |> yLine(-(23.0 - corner_radius), %)
-  |> tangentialArc([corner_radius, -corner_radius], %)
+  |> tangentialArcTo([corner_radius, -corner_radius], true, %)
   |> xLine(15.0 - (corner_radius * 2), %)
-  |> tangentialArc([corner_radius, -corner_radius], %)
+  |> tangentialArcTo([corner_radius, -corner_radius], true, %)
   |> yLine(-(length - 25.0 - 23.0 - (corner_radius * 2)), %)
-  |> tangentialArc([-corner_radius, -corner_radius], %)
+  |> tangentialArcTo([-corner_radius, -corner_radius], true, %)
   |> xLine(-(d_wrist_circumference[1] + d_wrist_circumference[2] + d_wrist_circumference[3] - hand_thickness - corner_radius), %)
-  |> tangentialArc([-corner_radius, -corner_radius], %)
+  |> tangentialArcTo([-corner_radius, -corner_radius], true, %)
   |> yLine(-(25.0 - corner_radius), %)
-  |> tangentialArc([corner_radius, -corner_radius], %)
+  |> tangentialArcTo([corner_radius, -corner_radius], true, %)
   |> close(%)
 
 let inner = startSketchAt([0, 0])
   |> xLine(1.0, %)
-  |> tangentialArc([corner_radius, corner_radius], %)
+  |> tangentialArcTo([corner_radius, corner_radius], true, %)
   |> yLine(25.0 - (corner_radius * 2), %)
-  |> tangentialArc([-corner_radius, corner_radius], %)
+  |> tangentialArcTo([-corner_radius, corner_radius], true, %)
   |> xLine(-1.0, %)
-  |> tangentialArc([-corner_radius, -corner_radius], %)
+  |> tangentialArcTo([-corner_radius, -corner_radius], true, %)
   |> yLine(-(25.0 - (corner_radius * 2)), %)
-  |> tangentialArc([corner_radius, -corner_radius], %)
+  |> tangentialArcTo([corner_radius, -corner_radius], true, %)
   |> close(%)
 
 let final = brace_base

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

@@ -317,7 +317,7 @@ async fn kcl_test_basic_tangential_arc() {
 async fn kcl_test_basic_tangential_arc_with_point() {
     let code = r#"const boxSketch = startSketchAt([0, 0])
     |> line([0, 10], %)
-    |> tangentialArc([-5, 5], %)
+    |> tangentialArcTo([-5, 5], true, %)
     |> line([5, -15], %)
     |> extrude(10, %)
 "#;
@@ -330,7 +330,7 @@ async fn kcl_test_basic_tangential_arc_with_point() {
 async fn kcl_test_basic_tangential_arc_to() {
     let code = r#"const boxSketch = startSketchAt([0, 0])
     |> line([0, 10], %)
-    |> tangentialArcTo([-5, 15], %)
+    |> tangentialArcTo([-5, 15], false, %)
     |> line([5, -15], %)
     |> extrude(10, %)
 "#;
@@ -463,7 +463,7 @@ const thing = other_circle([2, 2], 20)
 #[tokio::test(flavor = "multi_thread")]
 async fn kcl_test_rounded_with_holes() {
     let code = r#"fn tarc = (to, sketchGroup, tag?) => {
-  return tangentialArcTo(to, sketchGroup, tag)
+  return tangentialArcTo(to, false, sketchGroup, tag)
 }
 
 fn roundedRectangle = (pos, w, l, cornerRadius) => {
@@ -1530,7 +1530,7 @@ async fn kcl_test_error_empty_start_sketch_on_string() {
   |> line([190.03, -118.13], %)
   |> line([-33.38, -202.86], %)
   |> line([-315.86, -64.2], %)
-  |> tangentialArcTo([-147.66, 121.34], %)
+  |> tangentialArcTo([-147.66, 121.34], false, %)
   |> close(%)
   |> extrude(100, %)