Issue #45: refactor road specification in scheme.

Add special "road" part and move road specifications from the "ways".
Add road matcher.  We should remove "priority" key and use
specifications order instead in the future.

roentgen/constructor.py

@@ -19,7 +19,7 @@ from roentgen.osm_reader import (
     Map, OSMMember, OSMNode, OSMRelation, OSMWay, Tagged
 )
 from roentgen.point import Point
-from roentgen.scheme import DEFAULT_COLOR, LineStyle, Scheme
+from roentgen.scheme import DEFAULT_COLOR, LineStyle, Scheme, RoadMatcher
 from roentgen.util import MinMax
 
 __author__ = "Sergey Vartanov"
@@ -30,12 +30,6 @@ TIME_COLOR_SCALE: List[Color] = [
     Color("#581845"), Color("#900C3F"), Color("#C70039"), Color("#FF5733"),
     Color("#FFC300"), Color("#DAF7A6")
 ]
-ROAD_HIGHWAY_VALUES: List[str] = [
-    "motorway", "trunk", "primary", "secondary", "tertiary", "unclassified",
-    "residential", "motorway_link", "trunk_link", "primary_link",
-    "secondary_link", "tertiary_link", "living_street", "service",
-    "pedestrian", "track", "bus_guideway", "escape", "raceway", "road", "busway"
-]
 
 
 def is_clockwise(polygon: List[OSMNode]) -> bool:
@@ -175,11 +169,10 @@ class Road(Figure):
     """
 
     def __init__(
-        self, tags: Dict[str, str], inners, outers, flinger: Flinger,
-        line_styles: List[LineStyle]
+        self, tags: Dict[str, str], inners, outers, matcher
     ):
         super().__init__(tags, inners, outers, None)
-        self.line_styles = line_styles
+        self.matcher: RoadMatcher = matcher
 
 
 def line_center(nodes: List[OSMNode], flinger: Flinger) -> np.array:
@@ -387,12 +380,10 @@ class Constructor:
                 Building(line.tags, inners, outers, self.flinger, self.scheme)
             )
 
-        if (
-            "highway" in line.tags
-            and line.tags["highway"] in ROAD_HIGHWAY_VALUES
-        ):
+        road_matcher = self.scheme.get_road(line.tags)
+        if road_matcher:
             self.roads.append(
-                Road(line.tags, inners, outers, self.flinger, line_styles)
+                Road(line.tags, inners, outers, road_matcher)
             )
             return
 

roentgen/mapper.py

@@ -75,17 +75,33 @@ class Painter:
         ui.progress_bar(-1, 0, text="Drawing ways")
 
         roads = sorted(
-            constructor.roads, key=lambda x: x.line_styles[0].priority
+            constructor.roads, key=lambda x: x.matcher.priority
         )
         for road in roads:
             path_commands: str = road.get_path(self.flinger)
             path = Path(d=path_commands)
-            path.update(road.line_styles[0].style)
+            path.update({
+                "fill": "none",
+                "stroke": road.matcher.border_color.hex,
+                "stroke-linecap": "round",
+                "stroke-linejoin": "round",
+                "stroke-width":
+                    road.matcher.default_width
+                    * self.flinger.get_scale(road.outers[0][0].coordinates) + 2
+            })
             self.svg.add(path)
         for road in roads:
             path_commands: str = road.get_path(self.flinger)
             path = Path(d=path_commands)
-            path.update(road.line_styles[1].style)
+            path.update({
+                "fill": "none",
+                "stroke": road.matcher.color.hex,
+                "stroke-linecap": "round",
+                "stroke-linejoin": "round",
+                "stroke-width":
+                    road.matcher.default_width
+                    * self.flinger.get_scale(road.outers[0][0].coordinates)
+            })
             self.svg.add(path)
 
         # Trees

roentgen/scheme.py

@@ -163,22 +163,18 @@ class WayMatcher(Matcher):
         if "priority" in structure:
             self.priority = structure["priority"]
 
-        self.r = None
-        if "r" in structure:
-            self.r = structure["r"]
-            self.l = 0
-        if "r1" in structure:
-            self.r = structure["r1"]
-            self.l = 1
-        if "r2" in structure:
-            self.r = structure["r2"]
-            self.l = 2
 
-    def get_style(self, scale):
-        if self.r:
-            return {**self.style, **{"stroke-width": self.r * scale + self.l}}
-        else:
-            return self.style
+class RoadMatcher(Matcher):
+    def __init__(self, structure: Dict[str, Any], scheme):
+        super().__init__(structure)
+        self.border_color: Color = Color(scheme.get_color(structure["border_color"]))
+        self.color: Color = Color("white")
+        if "color" in structure:
+            self.color = Color(scheme.get_color(structure["color"]))
+        self.default_width: float = structure["default_width"]
+        self.priority: float = 0
+        if "priority" in structure:
+            self.priority = structure["priority"]
 
 
 class Scheme:
@@ -206,6 +202,9 @@ class Scheme:
         self.way_matchers: List[WayMatcher] = [
             WayMatcher(x, self.colors) for x in content["ways"]
         ]
+        self.road_matchers: List[RoadMatcher] = [
+            RoadMatcher(x, self) for x in content["roads"]
+        ]
         self.area_matchers: List[Matcher] = [
             Matcher(x) for x in content["area_tags"]
         ]
@@ -374,12 +373,17 @@ class Scheme:
             if not matcher.is_matched(tags):
                 continue
 
-            line_styles.append(
-                LineStyle(matcher.get_style(scale), matcher.priority)
-            )
+            line_styles.append(LineStyle(matcher.style, matcher.priority))
 
         return line_styles
 
+    def get_road(self, tags: Dict[str, Any]) -> Optional[RoadMatcher]:
+        for matcher in self.road_matchers:
+            if not matcher.is_matched(tags):
+                continue
+            return matcher
+        return None
+
     def construct_text(
         self, tags: Dict[str, str], draw_captions: str
     ) -> List[Label]:

scheme/default.yml

@@ -822,6 +822,56 @@ node_icons:
     - tags: {crossing:island: "no"}
       add_shapes: [rectangle_vertical_rounded_crossed]
 
+roads:
+  - tags: {highway: motorway}
+    default_width: 15
+    border_color: road_border_color
+    color: "#FFFFFF"
+  - tags: {highway: trunk}
+    default_width: 13
+    border_color: road_border_color
+    priority: 41
+  - tags: {highway: primary}
+    default_width: 11
+    border_color: primary_border_color
+    color: primary_color
+    priority: 41.9
+  - tags: {highway: motorway_link}
+    default_width: 9
+    border_color: road_border_color
+    priority: 41
+  - tags: {highway: secondary}
+    default_width: 9
+    border_color: secondary_border_color
+    priority: 41.8
+    color: secondary_color
+  - tags: {highway: tertiary}
+    default_width: 7
+    border_color: tertiary_border_color
+    priority: 41.7
+    color: tertiary_color
+  - tags: {highway: unclassified}
+    default_width: 5
+    border_color: road_border_color
+    priority: 41
+  - tags: {highway: residential}
+    default_width: 5
+    border_color: road_border_color
+    priority: 41
+  - tags: {highway: living_street}
+    default_width: 4
+    border_color: road_border_color
+    priority: 41
+  - tags: {highway: service}
+    exception: {service: parking_aisle}
+    default_width: 3
+    border_color: road_border_color
+    priority: 41
+  - tags: {highway: service, service: parking_aisle}
+    default_width: 2
+    border_color: road_border_color
+    priority: 41
+
 ways:
   - tags: {indoor: area}
     style:
@@ -866,6 +916,79 @@ ways:
       opacity: 0.1
     priority: 80
 
+  - tags: {highway: track}
+    style:
+      stroke-width: 1.5
+      stroke: track_color
+      stroke-linecap: round
+      stroke-linejoin: round
+    priority: 41
+  - tags: {highway: [footway, pedestrian, cycleway]}
+    exception: {area: "yes"}
+    style:
+      stroke-width: 3
+      stroke: foot_border_color
+      stroke-linecap: round
+      stroke-linejoin: round
+    priority: 41
+  - tags: {highway: steps}
+    style:
+      stroke-width: 6
+      stroke: foot_border_color
+      stroke-linecap: butt
+  - tags: {highway: path}
+    style:
+      stroke-width: 3
+      stroke: foot_border_color
+    priority: 41
+
+  - tags: {highway: [footway, pedestrian]}
+    exception: {area: "yes"}
+    style:
+      stroke-width: 1.5
+      stroke-dasharray: 7,3
+      stroke-linecap: round
+      stroke-linejoin: round
+      stroke: foot_color
+    priority: 42
+  - tags: {highway: [footway, pedestrian], area: "yes"}
+    style:
+      stroke: none
+      fill: "#DDDDDD"
+      stroke-linecap: round
+      stroke-linejoin: round
+    priority: -55  # FIXME
+  - tags: {highway: cycleway}
+    exception: {area: "yes"}
+    style:
+      stroke-width: 1
+      stroke: cycle_color
+      stroke-dasharray: 8,2
+      stroke-linecap: butt
+    priority: 42
+  - tags: {highway: steps, conveying: "*"}
+    style:
+      stroke-width: 5
+      stroke-dasharray: 1.5,2
+      stroke-linecap: butt
+      stroke: "#888888"
+    priority: 42
+  - tags: {highway: steps}
+    exception: {conveying: "*"}
+    style:
+      stroke-width: 5
+      stroke-dasharray: 1.5,2
+      stroke-linecap: butt
+      stroke: foot_color
+    priority: 42
+  - tags: {highway: path}
+    style:
+      stroke-width: 1.5
+      stroke-dasharray: 5,3
+      stroke-linecap: butt
+      stroke: foot_color
+    priority: 42
+
   - tags: {natural: wood}
     style:
       fill: wood_color
@@ -1047,235 +1170,6 @@ ways:
       stroke: platform_border_color
     priority: 41
 
-  - tags: {highway: motorway}
-    r2: 15
-    style:
-      stroke: road_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: trunk}
-    r2: 13
-    style:
-      stroke: road_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: primary}
-    r2: 11
-    style:
-      stroke: primary_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41.9
-  - tags: {highway: motorway_link}
-    r2: 9
-    style:
-      stroke: road_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: secondary}
-    r2: 9
-    style:
-      stroke: secondary_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41.8
-  - tags: {highway: tertiary}
-    r2: 7
-    style:
-      stroke: tertiary_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41.7
-  - tags: {highway: unclassified}
-    r2: 5
-    style:
-      stroke: road_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: residential}
-    r2: 5
-    style:
-      stroke: road_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: living_street}
-    r2: 4
-    style:
-      stroke: road_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: service}
-    exception: {service: parking_aisle}
-    r2: 3
-    style:
-      stroke: road_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: service, service: parking_aisle}
-    r2: 2
-    style:
-      stroke: road_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: track}
-    style:
-      stroke-width: 1.5
-      stroke: track_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: [footway, pedestrian, cycleway]}
-    exception: {area: "yes"}
-    style:
-      stroke-width: 3
-      stroke: foot_border_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 41
-  - tags: {highway: steps}
-    style:
-      stroke-width: 6
-      stroke: foot_border_color
-      stroke-linecap: butt
-  - tags: {highway: path}
-    style:
-      stroke-width: 3
-      stroke: foot_border_color
-    priority: 41
-
-  - tags: {highway: motorway}
-    r: 15
-    style:
-      stroke: "#FFFFFF"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42
-  - tags: {highway: trunk}
-    r: 13
-    style:
-      stroke:  "#FFFFFF"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42
-  - tags: {highway: primary}
-    r: 11
-    style:
-      stroke: primary_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42.9
-  - tags: {highway: secondary}
-    r: 9
-    style:
-      stroke: secondary_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42.8
-  - tags: {highway: motorway_link}
-    r: 9
-    style:
-      stroke: "#FFFFFF"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42
-  - tags: {highway: tertiary}
-    r: 7
-    style:
-      stroke: tertiary_color
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42.7
-  - tags: {highway: unclassified}
-    r: 5
-    style:
-      stroke: "#FFFFFF"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42
-  - tags: {highway: residential}
-    r: 5
-    style:
-      stroke: "#FFFFFF"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42
-  - tags: {highway: living_street}
-    r: 4
-    style:
-      stroke: "#FFFFFF"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42
-  - tags: {highway: service}
-    exception: {service: parking_aisle}
-    r: 3
-    style:
-      stroke: "#FFFFFF"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42
-  - tags: {highway: service, service: parking_aisle}
-    r: 2
-    style:
-      stroke: "#FFFFFF"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: 42
-  - tags: {highway: [footway, pedestrian]}
-    exception: {area: "yes"}
-    style:
-      stroke-width: 1.5
-      stroke-dasharray: 7,3
-      stroke-linecap: round
-      stroke-linejoin: round
-      stroke: foot_color
-    priority: 42
-  - tags: {highway: [footway, pedestrian], area: "yes"}
-    style:
-      stroke: none
-      fill: "#DDDDDD"
-      stroke-linecap: round
-      stroke-linejoin: round
-    priority: -55  # FIXME
-  - tags: {highway: cycleway}
-    exception: {area: "yes"}
-    style:
-      stroke-width: 1
-      stroke: cycle_color
-      stroke-dasharray: 8,2
-      stroke-linecap: butt
-    priority: 42
-  - tags: {highway: steps, conveying: "*"}
-    style:
-      stroke-width: 5
-      stroke-dasharray: 1.5,2
-      stroke-linecap: butt
-      stroke: "#888888"
-    priority: 42
-  - tags: {highway: steps}
-    exception: {conveying: "*"}
-    style:
-      stroke-width: 5
-      stroke-dasharray: 1.5,2
-      stroke-linecap: butt
-      stroke: foot_color
-    priority: 42
-  - tags: {highway: path}
-    style:
-      stroke-width: 1.5
-      stroke-dasharray: 5,3
-      stroke-linecap: butt
-      stroke: foot_color
-    priority: 42
-
   - tags: {route: ferry}
     style:
       stroke-width: 1