try

d2layouts/d2cycle/layout.go

@@ -119,7 +119,7 @@ func createCircularArc(edge *d2graph.Edge) {
 			tangentX /= mag
 			tangentY /= mag
 		}
-        const MIN_SEGMENT_LEN = 20.0
+        const MIN_SEGMENT_LEN = 0.0
 		// Calculate current segment direction
 		dx := lastPoint.X - secondLastPoint.X
 		dy := lastPoint.Y - secondLastPoint.Y

e2etests/testdata/txtar/cycle-diagram/dagre/board.exp.json

@@ -864,8 +864,8 @@
           "y": -37.47600173950195
         },
         {
-          "x": 193.95199584960938,
+          "x": 197.02099609375,
-          "y": -52.724998474121094
+          "y": -34.3849983215332
         },
         {
           "x": 197.2519989013672,
@@ -1228,8 +1228,8 @@
           "y": 197.53700256347656
         },
         {
-          "x": 46.323001861572266,
+          "x": 28.18000030517578,
-          "y": 195.5800018310547
+          "y": 198.00399780273438
         },
         {
           "x": 26.5,
@@ -1592,8 +1592,8 @@
           "y": 37.47600173950195
         },
         {
-          "x": -193.95199584960938,
+          "x": -197.02099609375,
-          "y": 52.724998474121094
+          "y": 34.3849983215332
         },
         {
           "x": -197.2519989013672,
@@ -1972,8 +1972,8 @@
           "y": 111.8030014038086
         },
         {
-          "x": 708.1329956054688,
+          "x": 701.875,
-          "y": 98.15499877929688
+          "y": 115.77300262451172
         },
         {
           "x": 701.4329833984375,
@@ -2336,8 +2336,8 @@
           "y": 186.90899658203125
         },
         {
-          "x": 376.9429931640625,
+          "x": 364.3710021972656,
-          "y": 197.93600463867188
+          "y": 183.8260040283203
         },
         {
           "x": 363.6419982910156,
@@ -2740,8 +2740,8 @@
           "y": 196.45700073242188
         },
         {
-          "x": 1018.322998046875,
+          "x": 1003.2860107421875,
-          "y": 195.5679931640625
+          "y": 197.53700256347656
         },
         {
           "x": 998.5,

e2etests/testdata/txtar/cycle-diagram/elk/board.exp.json

@@ -864,8 +864,8 @@
           "y": -25.47599983215332
         },
         {
-          "x": 205.95199584960938,
+          "x": 209.02099609375,
-          "y": -40.724998474121094
+          "y": -22.385000228881836
         },
         {
           "x": 209.2519989013672,
@@ -1228,8 +1228,8 @@
           "y": 209.53700256347656
         },
         {
-          "x": 58.323001861572266,
+          "x": 40.18000030517578,
-          "y": 207.5800018310547
+          "y": 210.00399780273438
         },
         {
           "x": 38.5,
@@ -1592,8 +1592,8 @@
           "y": 49.47600173950195
         },
         {
-          "x": -181.95199584960938,
+          "x": -185.02099609375,
-          "y": 64.7249984741211
+          "y": 46.3849983215332
         },
         {
           "x": -185.2519989013672,
@@ -1972,8 +1972,8 @@
           "y": 123.8030014038086
         },
         {
-          "x": 680.6329956054688,
+          "x": 674.375,
-          "y": 110.15499877929688
+          "y": 127.77300262451172
         },
         {
           "x": 673.9329833984375,
@@ -2336,8 +2336,8 @@
           "y": 198.90899658203125
         },
         {
-          "x": 349.4429931640625,
+          "x": 336.8710021972656,
-          "y": 209.93600463867188
+          "y": 195.8260040283203
         },
         {
           "x": 336.1419982910156,
@@ -2740,8 +2740,8 @@
           "y": 208.45700073242188
         },
         {
-          "x": 951.2329711914062,
+          "x": 936.197021484375,
-          "y": 207.5679931640625
+          "y": 209.53700256347656
         },
         {
           "x": 931.4099731445312,