Imports cased like the filename

src/ol/TileRange.js

@@ -0,0 +1,152 @@
+goog.provide('ol.TileRange');
+
+
+/**
+ * A representation of a contiguous block of tiles.  A tile range is specified
+ * by its min/max tile coordinates and is inclusive of coordinates.
+ *
+ * @constructor
+ * @param {number} minX Minimum X.
+ * @param {number} maxX Maximum X.
+ * @param {number} minY Minimum Y.
+ * @param {number} maxY Maximum Y.
+ * @struct
+ */
+ol.TileRange = function(minX, maxX, minY, maxY) {
+
+  /**
+   * @type {number}
+   */
+  this.minX = minX;
+
+  /**
+   * @type {number}
+   */
+  this.maxX = maxX;
+
+  /**
+   * @type {number}
+   */
+  this.minY = minY;
+
+  /**
+   * @type {number}
+   */
+  this.maxY = maxY;
+
+};
+
+
+/**
+ * @param {number} minX Minimum X.
+ * @param {number} maxX Maximum X.
+ * @param {number} minY Minimum Y.
+ * @param {number} maxY Maximum Y.
+ * @param {ol.TileRange|undefined} tileRange TileRange.
+ * @return {ol.TileRange} Tile range.
+ */
+ol.TileRange.createOrUpdate = function(minX, maxX, minY, maxY, tileRange) {
+  if (tileRange !== undefined) {
+    tileRange.minX = minX;
+    tileRange.maxX = maxX;
+    tileRange.minY = minY;
+    tileRange.maxY = maxY;
+    return tileRange;
+  } else {
+    return new ol.TileRange(minX, maxX, minY, maxY);
+  }
+};
+
+
+/**
+ * @param {ol.TileCoord} tileCoord Tile coordinate.
+ * @return {boolean} Contains tile coordinate.
+ */
+ol.TileRange.prototype.contains = function(tileCoord) {
+  return this.containsXY(tileCoord[1], tileCoord[2]);
+};
+
+
+/**
+ * @param {ol.TileRange} tileRange Tile range.
+ * @return {boolean} Contains.
+ */
+ol.TileRange.prototype.containsTileRange = function(tileRange) {
+  return this.minX <= tileRange.minX && tileRange.maxX <= this.maxX &&
+      this.minY <= tileRange.minY && tileRange.maxY <= this.maxY;
+};
+
+
+/**
+ * @param {number} x Tile coordinate x.
+ * @param {number} y Tile coordinate y.
+ * @return {boolean} Contains coordinate.
+ */
+ol.TileRange.prototype.containsXY = function(x, y) {
+  return this.minX <= x && x <= this.maxX && this.minY <= y && y <= this.maxY;
+};
+
+
+/**
+ * @param {ol.TileRange} tileRange Tile range.
+ * @return {boolean} Equals.
+ */
+ol.TileRange.prototype.equals = function(tileRange) {
+  return this.minX == tileRange.minX && this.minY == tileRange.minY &&
+      this.maxX == tileRange.maxX && this.maxY == tileRange.maxY;
+};
+
+
+/**
+ * @param {ol.TileRange} tileRange Tile range.
+ */
+ol.TileRange.prototype.extend = function(tileRange) {
+  if (tileRange.minX < this.minX) {
+    this.minX = tileRange.minX;
+  }
+  if (tileRange.maxX > this.maxX) {
+    this.maxX = tileRange.maxX;
+  }
+  if (tileRange.minY < this.minY) {
+    this.minY = tileRange.minY;
+  }
+  if (tileRange.maxY > this.maxY) {
+    this.maxY = tileRange.maxY;
+  }
+};
+
+
+/**
+ * @return {number} Height.
+ */
+ol.TileRange.prototype.getHeight = function() {
+  return this.maxY - this.minY + 1;
+};
+
+
+/**
+ * @return {ol.Size} Size.
+ */
+ol.TileRange.prototype.getSize = function() {
+  return [this.getWidth(), this.getHeight()];
+};
+
+
+/**
+ * @return {number} Width.
+ */
+ol.TileRange.prototype.getWidth = function() {
+  return this.maxX - this.minX + 1;
+};
+
+
+/**
+ * @param {ol.TileRange} tileRange Tile range.
+ * @return {boolean} Intersects.
+ */
+ol.TileRange.prototype.intersects = function(tileRange) {
+  return this.minX <= tileRange.maxX &&
+      this.maxX >= tileRange.minX &&
+      this.minY <= tileRange.maxY &&
+      this.maxY >= tileRange.minY;
+};