increase self connection width

d2layouts/d2sequence/constants.go

@@ -10,6 +10,8 @@ const MIN_ACTOR_DISTANCE = 70.
 
 const MIN_ACTOR_WIDTH = 150.
 
+const SELF_MESSAGE_HORIZONTAL_TRAVEL = 100.
+
 // min vertical distance between messages
 const MIN_MESSAGE_DISTANCE = 80.
 

d2layouts/d2sequence/sequence_diagram.go

@@ -427,7 +427,7 @@ func (sd *sequenceDiagram) routeMessages() error {
 		isSelfMessage := message.Src == message.Dst
 
 		if isSelfMessage || isToDescendant || isFromDescendant {
-			midX := startX + MIN_MESSAGE_DISTANCE
+			midX := startX + SELF_MESSAGE_HORIZONTAL_TRAVEL
 			endY := startY + MIN_MESSAGE_DISTANCE
 			message.Route = []*geo.Point{
 				geo.NewPoint(startX, startY),

e2etests/testdata/stable/sequence_diagram_self_edges/dagre/board.exp.json

@@ -301,11 +301,11 @@
           "y": 349
         },
         {
-          "x": 155,
+          "x": 175,
           "y": 349
         },
         {
-          "x": 155,
+          "x": 175,
           "y": 429
         },
         {
@@ -387,11 +387,11 @@
           "y": 609
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 609
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 689
         },
         {
@@ -434,11 +434,11 @@
           "y": 739
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 739
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 819
         },
         {
@@ -481,11 +481,11 @@
           "y": 869
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 869
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 949
         },
         {

e2etests/testdata/stable/sequence_diagram_self_edges/elk/board.exp.json

@@ -301,11 +301,11 @@
           "y": 349
         },
         {
-          "x": 155,
+          "x": 175,
           "y": 349
         },
         {
-          "x": 155,
+          "x": 175,
           "y": 429
         },
         {
@@ -387,11 +387,11 @@
           "y": 609
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 609
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 689
         },
         {
@@ -434,11 +434,11 @@
           "y": 739
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 739
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 819
         },
         {
@@ -481,11 +481,11 @@
           "y": 869
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 869
         },
         {
-          "x": 375,
+          "x": 395,
           "y": 949
         },
         {