Remove rendering of minor railway (spur, siding, yard) at low zooms, …

…fade them for higher zooms.

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Fix missing POIs: swimming pools, `shop=doityourself` and schools. Fix #64.
 * Render train stations when tagged on buildings (polygons). Fix #527.
 * Rendering bridge surface. Fix #551.
+* Remove rendering of minor railway (spur, siding, yard) at low zooms, fade them for higher zooms. Fix #559.
 
 
 ## v0.5

project.mml

@@ -796,7 +796,7 @@ Layer:
  ELSE 'unknown'
  END AS surface_type,
  CASE
- WHEN service in ('parking_aisle', 'drive-through', 'driveway') THEN 'minor'
+ WHEN service in ('parking_aisle', 'drive-through', 'driveway', 'spur', 'siding', 'yard') THEN 'minor'
  ELSE service
  END AS service,
  CASE
@@ -1076,7 +1076,7 @@ Layer:
  ELSE 'unknown'
  END AS surface_type,
  CASE
- WHEN service in ('parking_aisle', 'drive-through', 'driveway') THEN 'minor'
+ WHEN service in ('parking_aisle', 'drive-through', 'driveway', 'spur', 'siding', 'yard') THEN 'minor'
  ELSE service
  END AS service,
  CASE

roads.mss

@@ -378,15 +378,22 @@
 #roads_high[zoom>=11],
 #bridge[zoom>=11] {
  [type='railway']::rail_perpendicular {
- line-color: @rail-line;
+ [service!='minor'],
+ [service='minor'][zoom>=13]
+ {
  line-cap: butt;
+ line-color: @rail-line;
+ [service='minor'] {
+ line-color: lighten(@rail-line, 25%);
+ }
 
  /* hatches: start with space to avoid dense pattern on very short ways */
  line-dasharray: 0,2,1,2;
  [zoom>=14] { line-dasharray: 0,4,1,4; }
 
  line-width: 3;
  [zoom>=19] { line-width: 6; }
+ }
  }
 }
 
@@ -3677,29 +3684,36 @@
 #roads_high::rail_line[zoom>=11],
 #bridge::rail_line[zoom>=11] {
  [type='railway'] {
- line-color: @rail-line;
+ [service!='minor'],
+ [service='minor'][zoom>=13]
+ {
+ line-color: @rail-line;
+ [service='minor'] {
+ line-color: lighten(@rail-line, 25%);
+ }
 
- line-width: @rdz11_railway;
- [zoom>=12] {
- line-width: @rdz12_railway;
- }
- [zoom>=13] {
- line-width: @rdz13_railway;
- }
- [zoom>=14] {
- line-width: @rdz14_railway;
- }
- [zoom>=15] {
- line-width: @rdz15_railway;
- }
- [zoom>=16] {
- line-width: @rdz16_railway;
- }
- [zoom>=17] {
- line-width: @rdz17_railway;
- }
- [zoom>=18] {
- line-width: @rdz18_railway;
+ line-width: @rdz11_railway;
+ [zoom>=12] {
+ line-width: @rdz12_railway;
+ }
+ [zoom>=13] {
+ line-width: @rdz13_railway;
+ }
+ [zoom>=14] {
+ line-width: @rdz14_railway;
+ }
+ [zoom>=15] {
+ line-width: @rdz15_railway;
+ }
+ [zoom>=16] {
+ line-width: @rdz16_railway;
+ }
+ [zoom>=17] {
+ line-width: @rdz17_railway;
+ }
+ [zoom>=18] {
+ line-width: @rdz18_railway;
+ }
  }
  }
 }