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only calculate tile positions when necessary

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This commit is contained in:
Tom 2023-06-18 19:28:48 -04:00
parent 0584ca7be9
commit 128975ea0f
3 changed files with 18 additions and 12 deletions
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24
src/tiledimage.js
View File

@ -298,19 +298,25 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
/**
* Updates the TiledImage's bounds, animating if needed. Based on the new
* bounds, updates the levels and tiles to be drawn into the viewport.
* @param viewportChanged Whether the viewport changed meaning tiles need to be updated.
* @returns {Boolean} Whether the TiledImage needs to be drawn.
*/
update: function() {
var xUpdated = this._xSpring.update();
var yUpdated = this._ySpring.update();
var scaleUpdated = this._scaleSpring.update();
var degreesUpdated = this._degreesSpring.update();
update: function(viewportChanged) {
let xUpdated = this._xSpring.update();
let yUpdated = this._ySpring.update();
let scaleUpdated = this._scaleSpring.update();
let degreesUpdated = this._degreesSpring.update();
let fullyLoadedFlag = this._updateLevelsForViewport();
this._updateTilesInViewport();
this._setFullyLoaded(fullyLoadedFlag);
let updated = (xUpdated || yUpdated || scaleUpdated || degreesUpdated);
if (xUpdated || yUpdated || scaleUpdated || degreesUpdated) {
if (updated || viewportChanged || !this._fullyLoaded){
let fullyLoadedFlag = this._updateLevelsForViewport();
this._updateTilesInViewport();
this._setFullyLoaded(fullyLoadedFlag);
}
if (updated) {
this._updateForScale();
this._raiseBoundsChange();
this._needsDraw = true;

2
src/viewer.js
View File

@ -3749,7 +3749,7 @@ function updateOnce( viewer ) {
var viewportChange = viewer.viewport.update();
var animated = viewer.world.update() || viewportChange;
var animated = viewer.world.update(viewportChange) || viewportChange;
if (viewportChange) {
/**

4
src/world.js
View File

@ -243,10 +243,10 @@ $.extend( $.World.prototype, $.EventSource.prototype, /** @lends OpenSeadragon.W
/**
* Updates (i.e. animates bounds of) all items.
*/
update: function() {
update: function(viewportChanged) {
var animated = false;
for ( var i = 0; i < this._items.length; i++ ) {
animated = this._items[i].update() || animated;
animated = this._items[i].update(viewportChanged) || animated;
}
return animated;