150 lines
3.1 KiB
JavaScript
150 lines
3.1 KiB
JavaScript
/**
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* @module ol/TileRange
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*/
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/**
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* A representation of a contiguous block of tiles. A tile range is specified
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* by its min/max tile coordinates and is inclusive of coordinates.
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*/
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class TileRange {
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/**
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* @param {number} minX Minimum X.
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* @param {number} maxX Maximum X.
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* @param {number} minY Minimum Y.
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* @param {number} maxY Maximum Y.
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*/
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constructor(minX, maxX, minY, maxY) {
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/**
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* @type {number}
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*/
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this.minX = minX;
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/**
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* @type {number}
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*/
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this.maxX = maxX;
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/**
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* @type {number}
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*/
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this.minY = minY;
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/**
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* @type {number}
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*/
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this.maxY = maxY;
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}
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/**
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* @param {import("./tilecoord.js").TileCoord} tileCoord Tile coordinate.
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* @return {boolean} Contains tile coordinate.
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*/
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contains(tileCoord) {
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return this.containsXY(tileCoord[1], tileCoord[2]);
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}
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/**
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* @param {TileRange} tileRange Tile range.
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* @return {boolean} Contains.
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*/
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containsTileRange(tileRange) {
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return this.minX <= tileRange.minX && tileRange.maxX <= this.maxX &&
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this.minY <= tileRange.minY && tileRange.maxY <= this.maxY;
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}
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/**
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* @param {number} x Tile coordinate x.
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* @param {number} y Tile coordinate y.
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* @return {boolean} Contains coordinate.
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*/
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containsXY(x, y) {
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return this.minX <= x && x <= this.maxX && this.minY <= y && y <= this.maxY;
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}
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/**
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* @param {TileRange} tileRange Tile range.
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* @return {boolean} Equals.
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*/
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equals(tileRange) {
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return this.minX == tileRange.minX && this.minY == tileRange.minY &&
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this.maxX == tileRange.maxX && this.maxY == tileRange.maxY;
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}
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/**
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* @param {TileRange} tileRange Tile range.
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*/
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extend(tileRange) {
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if (tileRange.minX < this.minX) {
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this.minX = tileRange.minX;
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}
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if (tileRange.maxX > this.maxX) {
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this.maxX = tileRange.maxX;
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}
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if (tileRange.minY < this.minY) {
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this.minY = tileRange.minY;
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}
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if (tileRange.maxY > this.maxY) {
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this.maxY = tileRange.maxY;
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}
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}
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/**
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* @return {number} Height.
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*/
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getHeight() {
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return this.maxY - this.minY + 1;
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}
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/**
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* @return {import("./size.js").Size} Size.
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*/
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getSize() {
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return [this.getWidth(), this.getHeight()];
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}
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/**
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* @return {number} Width.
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*/
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getWidth() {
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return this.maxX - this.minX + 1;
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}
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/**
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* @param {TileRange} tileRange Tile range.
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* @return {boolean} Intersects.
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*/
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intersects(tileRange) {
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return this.minX <= tileRange.maxX &&
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this.maxX >= tileRange.minX &&
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this.minY <= tileRange.maxY &&
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this.maxY >= tileRange.minY;
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}
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}
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/**
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* @param {number} minX Minimum X.
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* @param {number} maxX Maximum X.
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* @param {number} minY Minimum Y.
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* @param {number} maxY Maximum Y.
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* @param {TileRange=} tileRange TileRange.
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* @return {TileRange} Tile range.
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*/
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export function createOrUpdate(minX, maxX, minY, maxY, tileRange) {
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if (tileRange !== undefined) {
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tileRange.minX = minX;
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tileRange.maxX = maxX;
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tileRange.minY = minY;
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tileRange.maxY = maxY;
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return tileRange;
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} else {
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return new TileRange(minX, maxX, minY, maxY);
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}
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}
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export default TileRange;
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