ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Adding fractionalZoom property to the map. This allows zooming to an arbitrary level, making it possible to have non-discrete resolutions for layers that support it. This property should not be set to true for layers with fixed zoom levels (commercial layers or others with cached tiles). r=elemoine,crschmidt,ahocevar (closes #1243)

Browse Source 
git-svn-id: http://svn.openlayers.org/trunk/openlayers@5982 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2008-02-04 06:23:54 +00:00
parent 1faf641806
commit 211a2834de
6 changed files with 225 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
tests/test_Layer.html
View File

@@ -176,10 +176,11 @@
function test_06_Layer_getZoomForResolution(t) {
t.plan(8);
t.plan(12);
var layer = new OpenLayers.Layer('Test Layer');
layer.map = {};
//make some dummy resolutions
layer.resolutions = [128, 64, 32, 16, 8, 4, 2];
@@ -193,6 +194,16 @@
t.eq(layer.getZoomForResolution(65, true), 1, "closest res");
t.eq(layer.getZoomForResolution(63, true), 1, "closest res");
layer.map.fractionalZoom = true;
t.eq(layer.getZoomForResolution(64), 1,
"(fractionalZoom) correct zoom for res in array");
t.eq(layer.getZoomForResolution(48).toPrecision(6), (1.5).toPrecision(6),
"(fractionalZoom) linear scaling for res between entries");
t.eq(layer.getZoomForResolution(200).toPrecision(6), (0).toPrecision(6),
"(fractionalZoom) doesn't return zoom below zero");
t.eq(layer.getZoomForResolution(1).toPrecision(6), (layer.resolutions.length - 1).toPrecision(6),
"(fractionalZoom) doesn't return zoom above highest index");
}
@@ -301,6 +312,41 @@
t.ok(layer.imageOffset.equals(desiredImageOffset), "image offset correctly calculated");
t.ok(layer.imageSize.equals(desiredImageSize), "image size correctly calculated");
}
function test_Layer_getResolution(t) {
t.plan(1);
var layer = new OpenLayers.Layer("test");
layer.map = {
getZoom: function() {return "foo";}
};
layer.getResolutionForZoom = function(zoom) {
t.eq(zoom, "foo", "getResolution calls getResolutionForZoom");
}
layer.getResolution();
layer.map = null;
layer.destroy();
}
function test_Layer_getResolutionForZoom(t) {
t.plan(5);
var layer = new OpenLayers.Layer("test");
layer.map = {fractionalZoom: false};
layer.resolutions = ["zero", "one", "two"];
t.eq(layer.getResolutionForZoom(0), "zero",
"(fractionalZoom false) returns resolution for given index");
t.eq(layer.getResolutionForZoom(0.9), "one",
"(fractionalZoom false) returns resolution for float index");
layer.resolutions = [2, 4, 6, 8];
layer.map.fractionalZoom = true;
t.eq(layer.getResolutionForZoom(1).toPrecision(6), (4).toPrecision(6),
"(fractionalZoom true) returns resolution for integer zoom");
t.eq(layer.getResolutionForZoom(1.5).toPrecision(6), (5).toPrecision(6),
"(fractionalZoom true) returns resolution for float zoom");
t.eq(layer.getResolutionForZoom(3.5).toPrecision(6), (8).toPrecision(6),
"(fractionalZoom true) returns resolution for zoom beyond res length - 1");
}