[*] wrapping for flatXY

src/cartographerFlatXY.js

@@ -1,9 +1,13 @@
 import Cartographer from './cartographer.js';
 
+import * as funky from './funky';
 import {rangeInclusive, invSqrt2} from './utils.js';
 
-import Square from './square.js';
 import Point from './point.js';
+import Square from './square.js';
+
+const makeASquare = ({x, y}) => new Square(x, y);
+const tilePointToSquare = ({tilePoint, pixelPoint}) => ({tilePoint: makeASquare(tilePoint), pixelPoint});
 
 export default class CartographerFlatXY extends Cartographer {
 	constructor(settings) {
@@ -28,7 +32,9 @@ export default class CartographerFlatXY extends Cartographer {
 			'tileToPixel',
 			'pixelToTile',
 
+			'teleport',
 			'inBounds',
+			'enforceBoundries',
 			'boundingBox',
 		].map(method => this[method] = this[method].bind(this));
 	}
@@ -94,7 +100,22 @@ export default class CartographerFlatXY extends Cartographer {
 		return new Square(x, y);
 	}
 
-	inBounds (x, y) {
+	teleport ({x, y}) {
+		if (this.negativeTiles) {
+			x = x % Math.ceil(this.width / 2);
+			y = y % Math.ceil(this.height / 2);
+		}
+		else {
+			x = x % this.width;
+			y = y % this.height;
+			x = x < 0 ? this.width + x : x;
+			y = y < 0 ? this.height + y : y;
+		}
+
+		return new Point(x, y);
+	}
+
+	inBounds ({x, y}) {
 		if (this.negativeTiles) {
 			return (!this.width || Math.abs(x) <= Math.floor(this.width / 2))
 				&& (!this.height || Math.abs(y) <= Math.floor(this.height / 2));
@@ -105,6 +126,12 @@ export default class CartographerFlatXY extends Cartographer {
 		}
 	}
 
+	enforceBoundries ({tilePoint, pixelPoint}) {
+		return this.wrap ? ({tilePoint: this.teleport(tilePoint), pixelPoint}) :
+			this.inBounds(tilePoint) ? ({tilePoint, pixelPoint}) :
+			null;
+	}
+
 	boundingBox(upperLeftPoint, upperRightPoint, lowerLeftPoint, lowerRightPoint) {
 		const upperLeftTile = this.pixelToTile(upperLeftPoint);
 		const lowerRightTile = this.pixelToTile(lowerRightPoint);
@@ -113,9 +140,16 @@ export default class CartographerFlatXY extends Cartographer {
 		const columns = rangeInclusive(upperLeftTile.getX(), upperRightTile.getX());
 		const rows = rangeInclusive(lowerRightTile.getY(), upperLeftTile.getY());
 
-		return columns.map(x => rows.map(y => ({x, y})))
-		.reduce((flat, list) => flat.concat(list), [])
-		.filter(({x, y}) => this.inBounds(x, y))
-		.map(({x, y}) => new Square(x, y));
+		const makeAPoint = x => rows.map(y => ({x, y}));
+		const makeAPointPair = tilePoint => ({tilePoint, pixelPoint: this.tileToPixel(tilePoint)});
+
+		return funky.chain(columns)
+		.map(makeAPoint)
+		.flatten()
+		.map(makeAPointPair)
+		.map(this.enforceBoundries)
+		.compact()
+		.map(tilePointToSquare)
+		.value();
 	}
 }

src/funky.js

@@ -16,7 +16,7 @@ export function chain (obj) {
 }
 
 export function compact (obj) {
-	return filter(obj, val => val ? true : false);
+	return filter(obj, val => val != null);
 }
 
 export function contains (obj, value) {
@@ -64,9 +64,12 @@ export function find (obj, predicate) {
 	}
 }
 
-export function flatten (list) {
-	if (Array.isArray(list)) {
-		return list.reduce((memo, element) => memo.concat(Array.isArray(element) ? flatten(element) : element), []);
+export function flatten (obj) {
+	if (Array.isArray(obj)) {
+		return obj.reduce((memo, element) => memo.concat(Array.isArray(element) ? flatten(element) : element), []);
+	}
+	else {
+		return reduce((flat, prop) => flat.concat(prop), [])
 	}
 }
 

src/main.js

@@ -130,9 +130,15 @@ class Demo {
 		const key = `${ x },${ z != null ? z : y }`;
 
 		const pipMax = this.settings.tile === Tessellate.TILE_STYLES.HEX ? 7 : 9;
+
+		if (this.map[key]) {
 			this.map[key].pips = Tessellate.utils.random(1, pipMax);
 
-		console.log({x, y, z});
+			console.log(key);
+		}
+		else {
+			console.log('ERROR - no tile', key);
+		}
 	}
 
 	pressStart(tap) {

src/point.js

@@ -1,6 +1,11 @@
 
 export default class Point {
 	constructor(x, y) {
+		if (typeof x === 'object') {
+			y = x.y;
+			x = x.x;
+		}
+
 		// add zero to turn -0 into 0
 		this.x = Math.round(x) + 0;
 		this.y = Math.round(y) + 0;

src/tessellate.js

@@ -231,8 +231,7 @@ export class Tessellate {
 			lowerRightY: height
 		};
 
-		const pointGroups = this.getTilePoints(corners)
-		.map(tilePoint => ({tilePoint, pixelPoint: this.tileToPixel(tilePoint)}));
+		const pointGroups = this.getTilePoints(corners);
 
 		this.settings.draw({
 			context,