feat(titan): Redrew the crotch and cross seam with new options

This commit adds the `crossSeamAngle` and `crotchSeamAngle` options
that control how the crotch- and cross seam reach the fork.

You can get the same result as what happened prior to this commit
by setting both options to zero.

However, their defaults are not zero, so this commit changes the
out-of-the-box pattern.

config/changelog.yaml

@@ -1,5 +1,17 @@
-2.14.1:
+2.15.0:
-  date:
+  date: unreleased
+
+  Added:
+    charlie:
+      - Inital release of the Charlie Chinos pattern
+    titan:
+      - Added the crossSeamCurveAngle option
+      - Added the crotchSeamCurveAngle option
+
+  Changed:
+    titan:
+      - Crotch- and Cross seam have been redrawn using the new angle options
+
   Fixed:
     titan:
       - Adapt seat control point when waist is dropped below the hip line

packages/titan/config/index.js

@@ -17,6 +17,7 @@ export default {
       'crossSeamCurveBend',
       'crotchSeamCurveStart',
       'crotchSeamCurveBend',
+      'crotchSeamCurveAngle',
       'grainlinePosition',
       'legBalance',
       'waistBalance'
@@ -59,8 +60,10 @@ export default {
     legBalance: { pct: 57.5, min: 52.5, max: 62.5 },
     crossSeamCurveStart: { pct: 85, min: 60, max: 100 },
     crossSeamCurveBend: { pct: 65, min: 45, max: 85 },
+    crossSeamCurveAngle: { deg: 12, min: 0, max: 20 },
     crotchSeamCurveStart: { pct: 80, min: 60, max: 95 },
     crotchSeamCurveBend: { pct: 80, min: 45, max: 100 },
+    crotchSeamCurveAngle: { deg: 25, min: 0, max: 35 },
     waistBalance: { pct: 60, min: 30, max: 90 },
     grainlinePosition: { pct: 45, min: 30, max: 60 }
   }

packages/titan/src/back.js

@@ -76,10 +76,9 @@ export default (part) => {
       points.crossSeamCurveMax,
       options.crossSeamCurveBend
     )
-    points.crossSeamCurveCp2 = points.fork.shiftFractionTowards(
+    points.crossSeamCurveCp2 = points.fork
-      points.crossSeamCurveMax,
+      .shiftFractionTowards(points.crossSeamCurveMax, options.crossSeamCurveBend)
-      options.crossSeamCurveBend
+      .rotate(options.crossSeamCurveAngle, points.fork)
-    )
   }
 
   // Shorthand

packages/titan/src/front.js

@@ -74,10 +74,10 @@ export default (part) => {
       points.fork,
       points.fork.shift(0, 666)
     )
-    points.crotchSeamCurveCp1 = points.fork.shiftFractionTowards(
+    points.crotchSeamCurveCp1 = points.fork
-      points.crotchSeamCurveMax,
+      .shiftFractionTowards(points.crotchSeamCurveMax, options.crotchSeamCurveBend)
-      options.crotchSeamCurveBend
+      .rotate(options.crotchSeamCurveAngle * -1, points.fork)
-    )
+    console.log(points.crotchSeamCurveCp1)
     points.crotchSeamCurveCp2 = points.crotchSeamCurveStart.shiftFractionTowards(
       points.crotchSeamCurveMax,
       options.crotchSeamCurveBend