💫 Update: Exp - AdaptiveModal

Summary: Update experiment/test - `swift-programmatic-modal/AdaptiveModal`.

experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalManager.swift

@@ -938,9 +938,16 @@ class AdaptiveModalManager: NSObject {
 
     let inputCoord = coord ??
       inputRect.origin[keyPath: self.modalConfig.inputValueKeyForPoint];
+
+    let inputCoordAdj = inputCoord < 0
+      ? min(inputCoord, 0)
+      : inputCoord;
 
     let delta = self.interpolationSteps.map {
-      abs($0.computedRect.origin[keyPath: self.modalConfig.inputValueKeyForPoint] - inputCoord);
+      let origin = $0.computedRect.origin;
+      let coord = origin[keyPath: self.modalConfig.inputValueKeyForPoint];
+
+      return abs(coord - inputCoordAdj);
     };
 
     let deltaSorted = delta.enumerated().sorted {
@@ -1076,7 +1083,6 @@ class AdaptiveModalManager: NSObject {
 
       case .changed:
         self.modalAnimator?.stopAnimation(true);
-
         self.applyInterpolationToModal(forGesturePoint: gesturePoint);
         self.notifyOnModalWillSnap();
 
@@ -1086,7 +1092,12 @@ class AdaptiveModalManager: NSObject {
           return;
         };
 
-        let gestureFinalPoint = self.gestureFinalPoint ?? gesturePoint;
+        let gestureFinalPointRaw = self.gestureFinalPoint ?? gesturePoint;
+
+        let gestureFinalPoint = CGPoint(
+          x: gestureFinalPointRaw.x - self.gestureOffset!.x,
+          y: gestureFinalPointRaw.y - self.gestureOffset!.y
+        );
 
         self.snapToClosestSnapPoint(forPoint: gestureFinalPoint) {
           self.endDisplayLink();
@@ -1169,7 +1180,7 @@ class AdaptiveModalManager: NSObject {
     let interpolationSteps = self.interpolationSteps!;
     let prevIndex = self.currentInterpolationIndex;
 
-    let nextIndex: Int = {
+    let nextIndexRaw: Int = {
       guard let nextIndex = self.nextInterpolationIndex else {
         let closestSnapPoint = self.getClosestSnapPoint();
         return closestSnapPoint.interpolationPoint.snapPointIndex;
@@ -1178,6 +1189,7 @@ class AdaptiveModalManager: NSObject {
       return nextIndex;
     }();
 
+    let nextIndex = self.adjustInterpolationIndex(for: nextIndexRaw);
     let nextPoint = self.interpolationSteps[nextIndex];
 
     guard prevIndex != nextIndex else { return };