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Add viewportToImageRectangle method and add support to pass a point to viewportToImageCoordinates and imageToViewportCoordinates

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This commit is contained in:
Antoine Vandecreme 2013-08-30 13:59:48 -04:00
parent 7f88bf78b6
commit bfa76e471b
1 changed files with 34 additions and 3 deletions
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37
src/viewport.js
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@ -726,7 +726,11 @@ $.Viewport.prototype = {
* system to image coordinate system
*/
viewportToImageCoordinates: function(viewerX, viewerY) {
return new $.Point(viewerX * this.contentSize.x, viewerY * this.contentSize.y * this.contentAspectX);
if ( arguments.length == 1 ) {
//they passed a point instead of individual components
return this.viewportToImageCoordinates(viewerX.x, viewerX.y);
}
return new $.Point(viewerX * this.contentSize.x, viewerY * this.contentSize.y * this.contentAspectX);
},
/**
@ -734,7 +738,11 @@ $.Viewport.prototype = {
* Seajax viewer coordinate system
*/
imageToViewportCoordinates: function( imageX, imageY ) {
return new $.Point( imageX / this.contentSize.x, imageY / this.contentSize.y / this.contentAspectX);
if ( arguments.length == 1 ) {
//they passed a point instead of individual components
return this.imageToViewportCoordinates(imageX.x, imageX.y);
}
return new $.Point( imageX / this.contentSize.x, imageY / this.contentSize.y / this.contentAspectX);
},
/**
@ -746,7 +754,7 @@ $.Viewport.prototype = {
var coordA,
coordB,
rect;
if( arguments.length == 1 ){
if( arguments.length == 1 ) {
//they passed a rectangle instead of individual components
rect = imageX;
return this.imageToViewportRectangle(rect.x, rect.y, rect.width, rect.height);
@ -763,6 +771,29 @@ $.Viewport.prototype = {
coordB.x,
coordB.y
);
},
/**
* Translates from a rectangle which describes a portion of
* the viewport in point coordinates to image rectangle coordinates.
*/
viewportToImageRectangle: function( viewerX, viewerY, pointWidth, pointHeight ) {
var coordA,
coordB,
rect;
if ( arguments.length == 1 ) {
//they passed a rectangle instead of individual components
rect = viewerX;
return this.viewportToImageRectangle(rect.x, rect.y, rect.width, rect.height);
}
coordA = this.viewportToImageCoordinates(viewerX, viewerY);
coordB = this.viewportToImageCoordinates(pointWidth, pointHeight);
return new $.Rect(
coordA.x,
coordA.y,
coordB.x,
coordB.y
);
}
};