Refine RunRate Lab low shot trajectories

app.py

@@ -2071,8 +2071,21 @@ GAME_HTML = r"""
 
   function shotPathFor(runs) {
     const aim = rowBy(aims, "Aim", state.selectedAim);
-    const angle = (Number(aim.Angle) - 90 + (state.selectedShot === "Cut / Pull" ? 14 : 0)) * Math.PI / 180;
+    const lane = Number(aim.Angle) / 45;
     const start = pitchPoint(0.89, 0);
+    if (runs < 4) {
+      const length = height * (runs >= 2 ? 0.24 : 0.18);
+      return {
+        x0: start.x,
+        y0: start.y,
+        cx: start.x + lane * length * 0.34,
+        cy: start.y - length * 0.14,
+        x1: start.x + lane * length * 0.72,
+        y1: start.y - length * 0.20,
+        runs
+      };
+    }
+    const angle = (Number(aim.Angle) - 90 + (state.selectedShot === "Cut / Pull" ? 14 : 0)) * Math.PI / 180;
     const length = runs >= 6 ? height * 0.60 : runs === 4 ? height * 0.48 : height * 0.26;
     return {
       x0: start.x,