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Allow tiled image rotation outside the 0 to 360 range

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This commit is contained in:
Antoine Vandecreme 2017-01-21 19:58:21 +01:00
parent b62d4a7bc1
commit 63a8a2ffa6
3 changed files with 19 additions and 13 deletions
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4
src/drawer.js
View File

@ -500,7 +500,7 @@ $.Drawer.prototype = {
if ( this.viewport.degrees !== 0 ) { if ( this.viewport.degrees !== 0 ) {
this._offsetForRotation({degrees: this.viewport.degrees}); this._offsetForRotation({degrees: this.viewport.degrees});
} }
if (tiledImage.getRotation(true) !== 0) { if (tiledImage.getRotation(true) % 360 !== 0) {
this._offsetForRotation({ this._offsetForRotation({
degrees: tiledImage.getRotation(true), degrees: tiledImage.getRotation(true),
point: tiledImage.viewport.pixelFromPointNoRotate( point: tiledImage.viewport.pixelFromPointNoRotate(
@ -569,7 +569,7 @@ $.Drawer.prototype = {
if ( this.viewport.degrees !== 0 ) { if ( this.viewport.degrees !== 0 ) {
this._restoreRotationChanges(); this._restoreRotationChanges();
} }
if (tiledImage.getRotation(true) !== 0) { if (tiledImage.getRotation(true) % 360 !== 0) {
this._restoreRotationChanges(); this._restoreRotationChanges();
} }
context.restore(); context.restore();

15
src/tiledimage.js
View File

@ -132,7 +132,7 @@ $.TiledImage = function( options ) {
var fitBoundsPlacement = options.fitBoundsPlacement || OpenSeadragon.Placement.CENTER; var fitBoundsPlacement = options.fitBoundsPlacement || OpenSeadragon.Placement.CENTER;
delete options.fitBoundsPlacement; delete options.fitBoundsPlacement;
var degrees = $.positiveModulo(options.degrees || 0, 360); var degrees = options.degrees || 0;
delete options.degrees; delete options.degrees;
$.extend( true, this, { $.extend( true, this, {
@ -789,7 +789,6 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
* @fires OpenSeadragon.TiledImage.event:bounds-change * @fires OpenSeadragon.TiledImage.event:bounds-change
*/ */
setRotation: function(degrees, immediately) { setRotation: function(degrees, immediately) {
degrees = $.positiveModulo(degrees, 360);
if (this._degreesSpring.target.value === degrees && if (this._degreesSpring.target.value === degrees &&
this._degreesSpring.isAtTargetValue()) { this._degreesSpring.isAtTargetValue()) {
return; return;
@ -1713,11 +1712,11 @@ function drawTiles( tiledImage, lastDrawn ) {
var zoom = tiledImage.viewport.getZoom(true); var zoom = tiledImage.viewport.getZoom(true);
var imageZoom = tiledImage.viewportToImageZoom(zoom); var imageZoom = tiledImage.viewportToImageZoom(zoom);
// TODO: support tile edge smoothing with tiled image rotation.
if (lastDrawn.length > 1 && if (lastDrawn.length > 1 &&
imageZoom > tiledImage.smoothTileEdgesMinZoom && imageZoom > tiledImage.smoothTileEdgesMinZoom &&
!tiledImage.iOSDevice && !tiledImage.iOSDevice &&
tiledImage.getRotation(true) === 0 && tiledImage.getRotation(true) % 360 === 0 && // TODO: support tile edge smoothing with tiled image rotation.
$.supportsCanvas) { $.supportsCanvas) {
// When zoomed in a lot (>100%) the tile edges are visible. // When zoomed in a lot (>100%) the tile edges are visible.
// So we have to composite them at ~100% and scale them up together. // So we have to composite them at ~100% and scale them up together.
@ -1751,7 +1750,7 @@ function drawTiles( tiledImage, lastDrawn ) {
useSketch: useSketch useSketch: useSketch
}); });
} }
if (tiledImage.getRotation(true) !== 0) { if (tiledImage.getRotation(true) % 360 !== 0) {
tiledImage._drawer._offsetForRotation({ tiledImage._drawer._offsetForRotation({
degrees: tiledImage.getRotation(true), degrees: tiledImage.getRotation(true),
point: tiledImage.viewport.pixelFromPointNoRotate( point: tiledImage.viewport.pixelFromPointNoRotate(
@ -1828,7 +1827,7 @@ function drawTiles( tiledImage, lastDrawn ) {
} }
if (!sketchScale) { if (!sketchScale) {
if (tiledImage.getRotation(true) !== 0) { if (tiledImage.getRotation(true) % 360 !== 0) {
tiledImage._drawer._restoreRotationChanges(useSketch); tiledImage._drawer._restoreRotationChanges(useSketch);
} }
if (tiledImage.viewport.degrees !== 0) { if (tiledImage.viewport.degrees !== 0) {
@ -1844,7 +1843,7 @@ function drawTiles( tiledImage, lastDrawn ) {
useSketch: false useSketch: false
}); });
} }
if (tiledImage.getRotation(true) !== 0) { if (tiledImage.getRotation(true) % 360 !== 0) {
tiledImage._drawer._offsetForRotation({ tiledImage._drawer._offsetForRotation({
degrees: tiledImage.getRotation(true), degrees: tiledImage.getRotation(true),
point: tiledImage.viewport.pixelFromPointNoRotate( point: tiledImage.viewport.pixelFromPointNoRotate(
@ -1861,7 +1860,7 @@ function drawTiles( tiledImage, lastDrawn ) {
bounds: bounds bounds: bounds
}); });
if (sketchScale) { if (sketchScale) {
if (tiledImage.getRotation(true) !== 0) { if (tiledImage.getRotation(true) % 360 !== 0) {
tiledImage._drawer._restoreRotationChanges(false); tiledImage._drawer._restoreRotationChanges(false);
} }
if (tiledImage.viewport.degrees !== 0) { if (tiledImage.viewport.degrees !== 0) {

13
test/modules/tiledimage.js
View File

@ -319,10 +319,16 @@
function testDefaultRotation() { function testDefaultRotation() {
var image = viewer.world.getItemAt(0); var image = viewer.world.getItemAt(0);
strictEqual(image.getRotation(), 0, 'image has default rotation'); strictEqual(image.getRotation(true), 0, 'image has default current rotation');
strictEqual(image.getRotation(false), 0, 'image has default target rotation');
image.setRotation(400); image.setRotation(400);
strictEqual(image.getRotation(), 40, 'rotation is set correctly'); strictEqual(image.getRotation(true), 0, 'current rotation is not changed');
strictEqual(image.getRotation(false), 400, 'target rotation is set correctly');
image.setRotation(200, true);
strictEqual(image.getRotation(true), 200, 'current rotation is set correctly');
strictEqual(image.getRotation(false), 200, 'target rotation is set correctly');
viewer.addOnceHandler('open', testTileSourceRotation); viewer.addOnceHandler('open', testTileSourceRotation);
viewer.open({ viewer.open({
@ -333,7 +339,8 @@
function testTileSourceRotation() { function testTileSourceRotation() {
var image = viewer.world.getItemAt(0); var image = viewer.world.getItemAt(0);
strictEqual(image.getRotation(), 300, 'image has correct rotation'); strictEqual(image.getRotation(true), -60, 'image has correct current rotation');
strictEqual(image.getRotation(false), -60, 'image has correct target rotation');
start(); start();
} }