Ongoing cleanup and refactoring of maps.

lib/pixi/maps/projections/robinson.js

@@ -117,8 +117,8 @@ export default class Robinson extends Projection {
 
     _adjustLng(lng, inv = false) {
         let moved = inv ? lng + this.lng0 : lng - this.lng0
-        if (moved < -180) moved += 360
-        if (moved > 180) moved -= 360
+        // if (moved < -180) moved += 360
+        // if (moved > 180) moved -= 360
 
         return moved
     }
@@ -139,10 +139,18 @@ export default class Robinson extends Projection {
         return { low: minIndex, high: maxIndex, ratio, sign }
     }
 
-    toString() {
-        return
-    }
     get name() {
         return 'Robinson Projection'
     }
+
+    get maxViewport() {
+        let min = new PIXI.Point(-90, -180)
+        let max = new PIXI.Point(90, 180)
+
+        max.x += this.lng0
+        min.x += this.lng0
+
+        console.log({ min, max })
+        return { min, max }
+    }
 }