Merge pull request #447 from gavin-ts/outside-connection-label-masking

render: outside connection label masking

ci/release/changelogs/next.md

@@ -5,6 +5,7 @@
 #### Improvements 🧹
 
 - Display version on CLI help invocation [#1400](https://github.com/terrastruct/d2/pull/1400)
+- Improved readability of connection labels when they overlap another connection. [#447](https://github.com/terrastruct/d2/pull/447)
 
 #### Bugfixes ⛑️
 

d2renderers/d2svg/d2svg.go

@@ -516,6 +516,8 @@ func drawConnection(writer io.Writer, labelMaskID string, connection d2target.Co
 
 		if label.Position(connection.LabelPosition).IsOnEdge() {
 			labelMask = makeLabelMask(labelTL, connection.LabelWidth, connection.LabelHeight, 1)
+		} else {
+			labelMask = makeLabelMask(labelTL, connection.LabelWidth, connection.LabelHeight, 0.75)
 		}
 	}