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Take out multiplication to avoid precision errors because it doesn't; add viewportToImageRectangle test

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This commit is contained in:
nein09 2014-10-21 11:19:41 -07:00
parent 7cf4556cdc
commit 8494b7ee7f
1 changed files with 32 additions and 9 deletions
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41
test/viewport.js
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@ -47,7 +47,34 @@
viewer.open('/test/data/testpattern.dzi'); viewer.open('/test/data/testpattern.dzi');
}); });
*/ */
asyncTest('viewerElementToImageCoordinates', function() { asyncTest('viewportToImageRectangle', function() {
var openHandler = function(event) {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
// do stuff here
var orig = new OpenSeadragon.Rect(
getRandom(0, 500),
getRandom(0, 500),
getRandom(0, 500),
getRandom(0, 500)
);
var expected = new OpenSeadragon.Rect(
orig.x * 1000,
orig.y * 1000,
orig.width * 1000,
orig.height * 1000
);
var actual = viewport.viewportToImageRectangle(orig);
propEqual(actual, expected, "Coordinates converted correctly for " + orig);
start();
};
viewer.addHandler('open', openHandler);
viewer.open('/test/data/testpattern.dzi');
});
asyncTest('viewerElementToImageCoordinates', function() {
var openHandler = function(event) { var openHandler = function(event) {
viewer.removeHandler('open', openHandler); viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport; var viewport = viewer.viewport;
@ -75,8 +102,7 @@ asyncTest('viewerElementToImageCoordinates', function() {
getRandom(0, 1000), getRandom(0, 1000) getRandom(0, 1000), getRandom(0, 1000)
); );
// The image is twice as large as the viewer. // The image is twice as large as the viewer.
// Multiplying instead of dividing to avoid precision errors var expected = orig.divide(2);
var expected = orig.times(0.500);
var actual = viewport.imageToViewerElementCoordinates(orig); var actual = viewport.imageToViewerElementCoordinates(orig);
propEqual(actual, expected, "Coordinates converted correctly for " + orig); propEqual(actual, expected, "Coordinates converted correctly for " + orig);
@ -95,8 +121,7 @@ asyncTest('viewerElementToImageCoordinates', function() {
getRandom(100, 3000), getRandom(100, 3000) getRandom(100, 3000), getRandom(100, 3000)
); );
// 500 is the viewer size; there's 20 px of padding (I think) // 500 is the viewer size; there's 20 px of padding (I think)
// Multiplying instead of dividing to avoid precision errors var expected = orig.divide(500).plus( new OpenSeadragon.Point(20, 20) );
var expected = orig.times(0.002).plus( new OpenSeadragon.Point(20, 20) );
var actual = viewport.windowToViewportCoordinates(orig); var actual = viewport.windowToViewportCoordinates(orig);
propEqual(actual, expected, "Coordinates converted correctly for " + orig); propEqual(actual, expected, "Coordinates converted correctly for " + orig);
@ -116,9 +141,8 @@ asyncTest('viewerElementToImageCoordinates', function() {
getRandom(0, 1000), getRandom(0, 1000) getRandom(0, 1000), getRandom(0, 1000)
); );
// The image is twice as large as the viewer. // The image is twice as large as the viewer.
// Multiplying instead of dividing to avoid precision errors
// don't know why I have to subtract 10000 though. // don't know why I have to subtract 10000 though.
var expected = orig.times(0.500).minus( new OpenSeadragon.Point(10000, 10000) ); var expected = orig.divide(2).minus( new OpenSeadragon.Point(10000, 10000) );
var actual = viewport.imageToWindowCoordinates(orig); var actual = viewport.imageToWindowCoordinates(orig);
propEqual(actual, expected, "Coordinates converted correctly for " + orig); propEqual(actual, expected, "Coordinates converted correctly for " + orig);
@ -138,8 +162,7 @@ asyncTest('viewerElementToImageCoordinates', function() {
); );
// 500 is the viewport container size; there's 20 px of padding (I think) // 500 is the viewport container size; there's 20 px of padding (I think)
// Multiplying instead of dividing to avoid precision errors var expected = orig.divide(500).plus( new OpenSeadragon.Point(20, 20) );
var expected = orig.times(0.002).plus( new OpenSeadragon.Point(20, 20) );
var actual = viewport.windowToViewportCoordinates(orig); var actual = viewport.windowToViewportCoordinates(orig);
propEqual(actual, expected, "Coordinates converted correctly for " + orig); propEqual(actual, expected, "Coordinates converted correctly for " + orig);