inspector vector tiles: render parallel edges

The style offsets the edges so that the directions may be differentiated.
opentripplanner · Oct 9, 2024 · b7563d6 · b7563d6
1 parent 8ffcc55
commit b7563d6
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Showing 3 changed files with 37 additions and 0 deletions.
diff --git a/src/main/java/org/opentripplanner/apis/vectortiles/DebugStyleSpec.java b/src/main/java/org/opentripplanner/apis/vectortiles/DebugStyleSpec.java
@@ -49,6 +49,10 @@ public class DebugStyleSpec {
     1.3f,
     List.of(new ZoomStop(13, 0.5f), new ZoomStop(MAX_ZOOM, 10))
   );
+  private static final ZoomDependentNumber LINE_OFFSET = new ZoomDependentNumber(
+    1.3f,
+    List.of(new ZoomStop(13, 0.3f), new ZoomStop(MAX_ZOOM, 6))
+  );
   private static final ZoomDependentNumber CIRCLE_STROKE = new ZoomDependentNumber(
     1,
     List.of(new ZoomStop(15, 0.2f), new ZoomStop(MAX_ZOOM, 3))
@@ -88,6 +92,7 @@ static StyleSpec build(
           .lineColor(MAGENTA)
           .edgeFilter(EDGES_TO_DISPLAY)
           .lineWidth(LINE_WIDTH)
+          .lineOffset(LINE_OFFSET)
           .minZoom(6)
           .maxZoom(MAX_ZOOM)
           .intiallyHidden(),
@@ -114,6 +119,7 @@ static StyleSpec build(
             StreetStationCentroidLink.class
           )
           .lineWidth(LINE_WIDTH)
+          .lineOffset(LINE_OFFSET)
           .minZoom(13)
           .maxZoom(MAX_ZOOM)
           .intiallyHidden(),

diff --git a/src/main/java/org/opentripplanner/apis/vectortiles/model/StyleBuilder.java b/src/main/java/org/opentripplanner/apis/vectortiles/model/StyleBuilder.java
@@ -165,6 +165,11 @@ public StyleBuilder lineWidth(ZoomDependentNumber zoomStops) {
     return this;
   }
 
+  public StyleBuilder lineOffset(ZoomDependentNumber zoomStops) {
+    paint.put("line-offset", zoomStops.toJson());
+    return this;
+  }
+
   public StyleBuilder fillColor(String color) {
     paint.put("fill-color", validateColor(color));
     return this;

diff --git a/src/test/resources/org/opentripplanner/apis/vectortiles/style.json b/src/test/resources/org/opentripplanner/apis/vectortiles/style.json
@@ -45,6 +45,19 @@
               10.0
             ]
           ]
+        },
+        "line-offset" : {
+          "base" : 1.3,
+          "stops" : [
+            [
+              13,
+              0.3
+            ],
+            [
+              23,
+              6.0
+            ]
+          ]
         }
       },
       "filter" : [
@@ -134,6 +147,19 @@
               10.0
             ]
           ]
+        },
+        "line-offset" : {
+          "base" : 1.3,
+          "stops" : [
+            [
+              13,
+              0.3
+            ],
+            [
+              23,
+              6.0
+            ]
+          ]
         }
       },
       "filter" : [