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Code Issues Projects Releases Wiki Activity

Animate rotation

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This commit is contained in:
Antoine Vandecreme 2017-01-07 19:24:29 +01:00
parent cfc339edea
commit fc69c6568d
3 changed files with 52 additions and 36 deletions
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6
src/drawer.js
View File

@ -500,9 +500,9 @@ $.Drawer.prototype = {
if ( this.viewport.degrees !== 0 ) {
this._offsetForRotation({degrees: this.viewport.degrees});
}
if (tiledImage.getRotation() !== 0) {
if (tiledImage.getRotation(true) !== 0) {
this._offsetForRotation({
degrees: tiledImage.getRotation(),
degrees: tiledImage.getRotation(true),
point: tiledImage.viewport.pixelFromPointNoRotate(
tiledImage._getRotationPoint(true), true)
});
@ -569,7 +569,7 @@ $.Drawer.prototype = {
if ( this.viewport.degrees !== 0 ) {
this._restoreRotationChanges();
}
if (tiledImage.getRotation() !== 0) {
if (tiledImage.getRotation(true) !== 0) {
this._restoreRotationChanges();
}
context.restore();

4
src/spring.js
View File

@ -206,6 +206,7 @@ $.Spring.prototype = {
/**
* @function
* @returns true if the value got updated, false otherwise
*/
update: function() {
this.current.time = $.now();
@ -229,11 +230,14 @@ $.Spring.prototype = {
( this.target.time - this.start.time )
);
var oldValue = this.current.value;
if (this._exponential) {
this.current.value = Math.exp(currentValue);
} else {
this.current.value = currentValue;
}
return oldValue != this.current.value;
},
/**

76
src/tiledimage.js
View File

@ -132,7 +132,7 @@ $.TiledImage = function( options ) {
var fitBoundsPlacement = options.fitBoundsPlacement || OpenSeadragon.Placement.CENTER;
delete options.fitBoundsPlacement;
this._degrees = $.positiveModulo(options.degrees || 0, 360);
var degrees = $.positiveModulo(options.degrees || 0, 360);
delete options.degrees;
$.extend( true, this, {
@ -186,6 +186,12 @@ $.TiledImage = function( options ) {
animationTime: this.animationTime
});
this._degreesSpring = new $.Spring({
initial: degrees,
springStiffness: this.springStiffness,
animationTime: this.animationTime
});
this._updateForScale();
if (fitBounds) {
@ -269,16 +275,12 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
* @returns {Boolean} Whether the TiledImage animated.
*/
update: function() {
var oldX = this._xSpring.current.value;
var oldY = this._ySpring.current.value;
var oldScale = this._scaleSpring.current.value;
var xUpdated = this._xSpring.update();
var yUpdated = this._ySpring.update();
var scaleUpdated = this._scaleSpring.update();
var degreesUpdated = this._degreesSpring.update();
this._xSpring.update();
this._ySpring.update();
this._scaleSpring.update();
if (this._xSpring.current.value !== oldX || this._ySpring.current.value !== oldY ||
this._scaleSpring.current.value !== oldScale) {
if (xUpdated || yUpdated || scaleUpdated || degreesUpdated) {
this._updateForScale();
this._needsDraw = true;
return true;
@ -313,7 +315,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
*/
getBounds: function(current) {
return this.getBoundsNoRotate(current)
.rotate(this._degrees, this._getRotationPoint(current));
.rotate(this.getRotation(current), this._getRotationPoint(current));
},
/**
@ -362,7 +364,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
clip.width,
clip.height);
}
return bounds.rotate(this._degrees, this._getRotationPoint(current));
return bounds.rotate(this.getRotation(current), this._getRotationPoint(current));
},
/**
@ -397,7 +399,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
point = new $.Point(viewerX, viewerY);
}
point = point.rotate(-this._degrees, this._getRotationPoint(current));
point = point.rotate(-this.getRotation(current), this._getRotationPoint(current));
return current ?
this._viewportToImageDelta(
point.x - this._xSpring.current.value,
@ -439,7 +441,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
point.y += this._ySpring.target.value;
}
return point.rotate(this._degrees, this._getRotationPoint(current));
return point.rotate(this.getRotation(current), this._getRotationPoint(current));
},
/**
@ -470,7 +472,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
coordA.y,
coordB.x,
coordB.y,
rect.degrees + this._degrees
rect.degrees + this.getRotation(current)
);
},
@ -502,7 +504,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
coordA.y,
coordB.x,
coordB.y,
rect.degrees - this._degrees
rect.degrees - this.getRotation(current)
);
},
@ -555,7 +557,7 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
// coordinates (x in [0, 1] and y in [0, aspectRatio])
_viewportToTiledImageRectangle: function(rect) {
var scale = this._scaleSpring.current.value;
rect = rect.rotate(-this.getRotation(), this._getRotationPoint(true));
rect = rect.rotate(-this.getRotation(true), this._getRotationPoint(true));
return new $.Rect(
(rect.x - this._xSpring.current.value) / scale,
(rect.y - this._ySpring.current.value) / scale,
@ -769,24 +771,34 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
},
/**
* Get the current rotation of this tiled image in degrees.
* @returns {Number} the current rotation of this tiled image in degrees.
* Get the rotation of this tiled image in degrees.
* @param {Boolean} [current=false] True for current rotation, false for target.
* @returns {Number} the rotation of this tiled image in degrees.
*/
getRotation: function() {
return this._degrees;
getRotation: function(current) {
return current ?
this._degreesSpring.current.value :
this._degreesSpring.target.value;
},
/**
* Set the current rotation of this tiled image in degrees.
* @param {Number} degrees the rotation in degrees.
* @param {Boolean} [immediately=false] Whether to animate to the new angle
* or rotate immediately.
* @fires OpenSeadragon.TiledImage.event:bounds-change
*/
setRotation: function(degrees) {
setRotation: function(degrees, immediately) {
degrees = $.positiveModulo(degrees, 360);
if (this._degrees === degrees) {
if (this._degreesSpring.target.value === degrees &&
this._degreesSpring.isAtTargetValue()) {
return;
}
this._degrees = degrees;
if (immediately) {
this._degreesSpring.resetTo(degrees);
} else {
this._degreesSpring.springTo(degrees);
}
this._needsDraw = true;
this._raiseBoundsChange();
},
@ -1705,7 +1717,7 @@ function drawTiles( tiledImage, lastDrawn ) {
if (lastDrawn.length > 1 &&
imageZoom > tiledImage.smoothTileEdgesMinZoom &&
!tiledImage.iOSDevice &&
tiledImage.getRotation() === 0 &&
tiledImage.getRotation(true) === 0 &&
$.supportsCanvas) {
// When zoomed in a lot (>100%) the tile edges are visible.
// So we have to composite them at ~100% and scale them up together.
@ -1739,9 +1751,9 @@ function drawTiles( tiledImage, lastDrawn ) {
useSketch: useSketch
});
}
if (tiledImage._degrees !== 0) {
if (tiledImage.getRotation(true) !== 0) {
tiledImage._drawer._offsetForRotation({
degrees: tiledImage._degrees,
degrees: tiledImage.getRotation(true),
point: tiledImage.viewport.pixelFromPointNoRotate(
tiledImage._getRotationPoint(true), true),
useSketch: useSketch
@ -1754,7 +1766,7 @@ function drawTiles( tiledImage, lastDrawn ) {
tiledImage._drawer.saveContext(useSketch);
var box = tiledImage.imageToViewportRectangle(tiledImage._clip, true);
box = box.rotate(-tiledImage._degrees, tiledImage._getRotationPoint());
box = box.rotate(-tiledImage.getRotation(true), tiledImage._getRotationPoint(true));
var clipRect = tiledImage._drawer.viewportToDrawerRectangle(box);
if (sketchScale) {
clipRect = clipRect.times(sketchScale);
@ -1816,7 +1828,7 @@ function drawTiles( tiledImage, lastDrawn ) {
}
if (!sketchScale) {
if (tiledImage._degrees !== 0) {
if (tiledImage.getRotation(true) !== 0) {
tiledImage._drawer._restoreRotationChanges(useSketch);
}
if (tiledImage.viewport.degrees !== 0) {
@ -1832,9 +1844,9 @@ function drawTiles( tiledImage, lastDrawn ) {
useSketch: false
});
}
if (tiledImage._degrees !== 0) {
if (tiledImage.getRotation(true) !== 0) {
tiledImage._drawer._offsetForRotation({
degrees: tiledImage._degrees,
degrees: tiledImage.getRotation(true),
point: tiledImage.viewport.pixelFromPointNoRotate(
tiledImage._getRotationPoint(true), true),
useSketch: false
@ -1849,7 +1861,7 @@ function drawTiles( tiledImage, lastDrawn ) {
bounds: bounds
});
if (sketchScale) {
if (tiledImage._degrees !== 0) {
if (tiledImage.getRotation(true) !== 0) {
tiledImage._drawer._restoreRotationChanges(false);
}
if (tiledImage.viewport.degrees !== 0) {