feat: export and render building:part

Author: c84c

resources/process-openmaptiles.lua

@@ -382,6 +382,7 @@ function way_function()
 	local write_name = false
 	local construction = Find("construction")
 	local is_highway_area = highway~="" and Find("area")=="yes" and is_closed
+	local building_part = Find("building:part")
 
 	-- Miscellaneous preprocessing
 	if Find("disused") == "yes" then return end
@@ -645,7 +646,7 @@ function way_function()
 	end
 
 	-- Set 'building' and associated
-	if building~="" then
+	if building~="" or building_part~="" then
 		Layer("building", true)
 		SetBuildingHeightAttributes()
 		SetMinZoomByArea()
@@ -868,17 +869,28 @@ end
 
 function SetBuildingHeightAttributes()
 	local height = tonumber(Find("height"), 10)
+	local buildingHeight = tonumber(Find("building:height"), 10)
+	local finalHeight = height or buildingHeight
+
 	local minHeight = tonumber(Find("min_height"), 10)
-	local levels = tonumber(Find("building:levels"), 10)
-	local minLevel = tonumber(Find("building:min_level"), 10)
+	local buildingMinHeight = tonumber(Find("building:min_height"), 10)
+	local finalMinHeight = minHeight or buildingMinHeight
+
+	local levels = tonumber(Find("levels"), 10)
+	local buildingLevels = tonumber(Find("building:levels"), 10)
+	local finalLevels = levels or buildingLevels
+
+	local minLevel = tonumber(Find("min_level"), 10)
+	local buildingMinLevel = tonumber(Find("building:min_level"), 10)
+	local finalMinLevel = minLevel or buildingMinLevel
 
 	local renderHeight = BUILDING_FLOOR_HEIGHT
-	if height or levels then
-		renderHeight = height or (levels * BUILDING_FLOOR_HEIGHT)
+	if finalHeight or finalLevels then
+		renderHeight = finalHeight or (finalLevels * BUILDING_FLOOR_HEIGHT)
 	end
 	local renderMinHeight = 0
-	if minHeight or minLevel then
-		renderMinHeight = minHeight or (minLevel * BUILDING_FLOOR_HEIGHT)
+	if finalMinHeight or finalMinLevel then
+		renderMinHeight = finalMinHeight or (finalMinLevel * BUILDING_FLOOR_HEIGHT)
 	end
 
 	-- Fix upside-down buildings

server/static/index.html

@@ -32,7 +32,8 @@
 		    style: styleURL, // stylesheet location
 		    center: [(Number(bounds[0])+Number(bounds[2]))/2,
 			         (Number(bounds[1])+Number(bounds[3]))/2], // starting position [lng, lat]
-		    zoom: 13 // starting zoom
+		    zoom: 13, // starting zoom
+		    pitch: 60 // pitch in degrees
 		});
 		map.addControl(new mapboxgl.NavigationControl());
 		map.addControl(new mapboxgl.AttributionControl({ compact: false, customAttribution:

server/static/style.json

@@ -366,23 +366,29 @@
       "metadata": {"mapbox:group": "1444849364238.8171"},
       "source": "openmaptiles",
       "source-layer": "building",
+      "minzoom": 13,
+      "maxzoom": 21,
+      "layout": {
+        "visibility": "visible"
+      },
       "paint": {
-        "fill-antialias": true,
-        "fill-color": {"base": 1, "stops": [[15.5, "#f2eae2"], [16, "#dfdbd7"]]}
+        "fill-color": "rgba(203, 198, 198, 1)",
+        "fill-outline-color": {"base": 1, "stops": [[13,"rgba(131, 123, 123, 0.32)"], [14,"rgba(157, 3, 5, 1)"]]}
       }
     },
     {
-      "id": "building-top",
-      "type": "fill",
+      "id": "building-3d",
+      "type": "fill-extrusion",
       "metadata": {"mapbox:group": "1444849364238.8171"},
       "source": "openmaptiles",
       "source-layer": "building",
+      "minzoom": 14,
       "layout": {"visibility": "visible"},
       "paint": {
-        "fill-color": "#f2eae2",
-        "fill-opacity": {"base": 1, "stops": [[13, 0], [16, 1]]},
-        "fill-outline-color": "#dfdbd7",
-        "fill-translate": {"base": 1, "stops": [[14, [0, 0]], [16, [-2, -2]]]}
+        "fill-extrusion-color": "rgba(203, 198, 198, 1)",
+        "fill-extrusion-height": {"property": "render_height","type": "identity"},
+        "fill-extrusion-base": {"property": "render_min_height","type": "identity"},
+        "fill-extrusion-opacity": 0.9
       }
     },
     {