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Add maxResolution option to createXYZ()

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include maxResolution in options test
This commit is contained in:
mike-000
2020-02-16 17:14:31 +00:00
parent a6c195e528
commit 1416e30127
6 changed files with 28 additions and 27 deletions
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15
src/ol/tilegrid.js
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@@ -72,8 +72,9 @@ export function createForExtent(extent, opt_maxZoom, opt_tileSize, opt_corner) {
/**
* @typedef {Object} XYZOptions
* @property {import("./extent.js").Extent} [extent] Extent for the tile grid. The origin for an XYZ tile grid is the
* top-left corner of the extent. The zero level of the grid is defined by the resolution at which one tile fits in the
* provided extent. If not provided, the extent of the EPSG:3857 projection is used.
* top-left corner of the extent. If `maxResolution` is not provided the zero level of the grid is defined by the resolution
* at which one tile fits in the provided extent. If not provided, the extent of the EPSG:3857 projection is used.
* @property {number} [maxResolution] Resolution at level zero.
* @property {number} [maxZoom] Maximum zoom. The default is `42`. This determines the number of levels
* in the grid set. For example, a `maxZoom` of 21 means there are 22 levels in the grid set.
* @property {number} [minZoom=0] Minimum zoom.
@@ -99,7 +100,8 @@ export function createXYZ(opt_options) {
resolutions: resolutionsFromExtent(
extent,
xyzOptions.maxZoom,
xyzOptions.tileSize
xyzOptions.tileSize,
xyzOptions.maxResolution
)
};
return new TileGrid(gridOptions);
@@ -113,9 +115,10 @@ export function createXYZ(opt_options) {
* DEFAULT_MAX_ZOOM).
* @param {number|import("./size.js").Size=} opt_tileSize Tile size (default uses
* DEFAULT_TILE_SIZE).
* @param {number=} opt_maxResolution Resolution at level zero.
* @return {!Array<number>} Resolutions array.
*/
function resolutionsFromExtent(extent, opt_maxZoom, opt_tileSize) {
function resolutionsFromExtent(extent, opt_maxZoom, opt_tileSize, opt_maxResolution) {
const maxZoom = opt_maxZoom !== undefined ?
opt_maxZoom : DEFAULT_MAX_ZOOM;
@@ -124,8 +127,8 @@ function resolutionsFromExtent(extent, opt_maxZoom, opt_tileSize) {
const tileSize = toSize(opt_tileSize !== undefined ?
opt_tileSize : DEFAULT_TILE_SIZE);
const maxResolution = Math.max(
width / tileSize[0], height / tileSize[1]);
const maxResolution = opt_maxResolution > 0 ? opt_maxResolution :
Math.max(width / tileSize[0], height / tileSize[1]);
const length = maxZoom + 1;
const resolutions = new Array(length);