try

d2layouts/d2cycle/layout.go

@@ -119,7 +119,7 @@ func createCircularArc(edge *d2graph.Edge) {
 			tangentX /= mag
 			tangentY /= mag
 		}
-        const MIN_SEGMENT_LEN = 10.0
+        const MIN_SEGMENT_LEN = 20.0
 		// 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": 195.6020050048828,
-          "y": -42.86199951171875
+          "x": 193.95199584960938,
+          "y": -52.724998474121094
         },
         {
           "x": 197.2519989013672,
@@ -1228,8 +1228,8 @@
           "y": 197.53700256347656
         },
         {
-          "x": 36.4109992980957,
-          "y": 196.90499877929688
+          "x": 46.323001861572266,
+          "y": 195.5800018310547
         },
         {
           "x": 26.5,
@@ -1592,8 +1592,8 @@
           "y": 37.47600173950195
         },
         {
-          "x": -195.6020050048828,
-          "y": 42.86199951171875
+          "x": -193.95199584960938,
+          "y": 52.724998474121094
         },
         {
           "x": -197.2519989013672,
@@ -1972,8 +1972,8 @@
           "y": 111.8030014038086
         },
         {
-          "x": 704.7830200195312,
-          "y": 107.5770034790039
+          "x": 708.1329956054688,
+          "y": 98.15499877929688
         },
         {
           "x": 701.4329833984375,
@@ -2336,8 +2336,8 @@
           "y": 186.90899658203125
         },
         {
-          "x": 370.2919921875,
-          "y": 190.46800231933594
+          "x": 376.9429931640625,
+          "y": 197.93600463867188
         },
         {
           "x": 363.6419982910156,
@@ -2740,8 +2740,8 @@
           "y": 196.45700073242188
         },
         {
-          "x": 1008.4110107421875,
-          "y": 196.89300537109375
+          "x": 1018.322998046875,
+          "y": 195.5679931640625
         },
         {
           "x": 998.5,

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

@@ -864,8 +864,8 @@
           "y": -25.47599983215332
         },
         {
-          "x": 207.6020050048828,
-          "y": -30.86199951171875
+          "x": 205.95199584960938,
+          "y": -40.724998474121094
         },
         {
           "x": 209.2519989013672,
@@ -1228,8 +1228,8 @@
           "y": 209.53700256347656
         },
         {
-          "x": 48.4109992980957,
-          "y": 208.90499877929688
+          "x": 58.323001861572266,
+          "y": 207.5800018310547
         },
         {
           "x": 38.5,
@@ -1592,8 +1592,8 @@
           "y": 49.47600173950195
         },
         {
-          "x": -183.6020050048828,
-          "y": 54.86199951171875
+          "x": -181.95199584960938,
+          "y": 64.7249984741211
         },
         {
           "x": -185.2519989013672,
@@ -1972,8 +1972,8 @@
           "y": 123.8030014038086
         },
         {
-          "x": 677.2830200195312,
-          "y": 119.5770034790039
+          "x": 680.6329956054688,
+          "y": 110.15499877929688
         },
         {
           "x": 673.9329833984375,
@@ -2336,8 +2336,8 @@
           "y": 198.90899658203125
         },
         {
-          "x": 342.7919921875,
-          "y": 202.46800231933594
+          "x": 349.4429931640625,
+          "y": 209.93600463867188
         },
         {
           "x": 336.1419982910156,
@@ -2740,8 +2740,8 @@
           "y": 208.45700073242188
         },
         {
-          "x": 941.3209838867188,
-          "y": 208.89300537109375
+          "x": 951.2329711914062,
+          "y": 207.5679931640625
         },
         {
           "x": 931.4099731445312,