try

d2layouts/d2cycle/layout.go

@@ -73,52 +73,32 @@ func createCircularArc(edge *d2graph.Edge) {
 	srcCenter := edge.Src.Center()
 	dstCenter := edge.Dst.Center()
 
-    // Calculate the radius based on the distance from origin to the centers
-    srcRadius := math.Hypot(srcCenter.X, srcCenter.Y)
-    dstRadius := math.Hypot(dstCenter.X, dstCenter.Y)
-    
-    // Use average radius for more consistent arcs
-    
-
-    // Calculate angles but preserve relative positioning
 	srcAngle := math.Atan2(srcCenter.Y, srcCenter.X)
 	dstAngle := math.Atan2(dstCenter.Y, dstCenter.X)
-
-    // Ensure we take the shorter path around the circle
 	if dstAngle < srcAngle {
-        if srcAngle - dstAngle > math.Pi {
 		dstAngle += 2 * math.Pi
 	}
-    } else {
-        if dstAngle - srcAngle > math.Pi {
-            srcAngle += 2 * math.Pi
-        }
-    }
+
+	arcRadius := math.Hypot(srcCenter.X, srcCenter.Y)
 
 	path := make([]*geo.Point, 0, ARC_STEPS+1)
 	for i := 0; i <= ARC_STEPS; i++ {
 		t := float64(i) / float64(ARC_STEPS)
 		angle := srcAngle + t*(dstAngle-srcAngle)
-        
-        // Use interpolated radius for smoother transition
-        radius := srcRadius + t*(dstRadius-srcRadius)
-        
-        x := radius * math.Cos(angle)
-        y := radius * math.Sin(angle)
+		x := arcRadius * math.Cos(angle)
+		y := arcRadius * math.Sin(angle)
 		path = append(path, geo.NewPoint(x, y))
 	}
-    
-    // Ensure exact endpoints
 	path[0] = srcCenter
 	path[len(path)-1] = dstCenter
 
-    // Clamp endpoints to the boundaries of the source and destination boxes
+	// Clamp endpoints to the boundaries of the source and destination boxes.
 	_, newSrc := clampPointOutsideBox(edge.Src.Box, path, 0)
 	_, newDst := clampPointOutsideBoxReverse(edge.Dst.Box, path, len(path)-1)
 	path[0] = newSrc
 	path[len(path)-1] = newDst
 
-    // Trim redundant path points that fall inside node boundaries
+	// Trim redundant path points that fall inside node boundaries.
 	path = trimPathPoints(path, edge.Src.Box)
 	path = trimPathPoints(path, edge.Dst.Box)