ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Zoomify: Separate the service pixel ratio and the device pixel ratio

Browse Source
This commit is contained in:
Vincent Lecrubier
2020-01-21 20:50:33 +00:00
committed by Vincent Lecrubier
parent d1b2dfb669
commit 3a5c8d637c
3 changed files with 27 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/ol/source/Zoomify.js
View File

@@ -90,7 +90,8 @@ export class CustomTile extends ImageTile {
* you must provide a `crossOrigin` value you want to access pixel data with the Canvas renderer.
* See https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.
* @property {import("../proj.js").ProjectionLike} [projection] Projection.
* @property {number} [tilePixelRatio] The pixel ratio used by the tile service. For example, if the tile service advertizes 256px by 256px tiles but actually sends 512px by 512px images (for retina/hidpi devices) then `tilePixelRatio` should be set to `2`
* @property {number} [tilePixelRatio] The pixel ratio to display on screen. If on a retina screen then `tilePixelRatio` should be 2, else it should be 1.
* @property {number} [tilePixelRatioOriginal] The pixel ratio used by the tile service. For example, if the tile service advertizes 256px by 256px tiles but actually sends 512px by 512px images (for retina/hidpi devices) then `tilePixelRatioOriginal` should be set to `2`
* @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).
* Higher values can increase reprojection performance, but decrease precision.
* @property {string} [url] URL template or base URL of the Zoomify service.
@@ -147,6 +148,7 @@ class Zoomify extends TileImage {
const tierSizeInTiles = [];
const tileSize = options.tileSize || DEFAULT_TILE_SIZE;
const tilePixelRatio = options.tilePixelRatio || 1;
const tilePixelRatioOriginal = options.tilePixelRatioOriginal || tilePixelRatio;
let tileSizeForTierSizeCalculation = tileSize;
switch (tierSizeCalculation) {
@@ -246,7 +248,7 @@ class Zoomify extends TileImage {
const tileUrlFunction = createFromTileUrlFunctions(urls.map(createFromTemplate));
const ZoomifyTileClass = CustomTile.bind(null, tilePixelRatio, tileGrid);
const ZoomifyTileClass = CustomTile.bind(null, tilePixelRatioOriginal, tileGrid);
super({
attributions: options.attributions,