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<!DOCTYPE html>
<html>
<head>
<script src="../OLLoader.js"></script>
<script type="text/javascript">
function test_initialize(t) {
t.plan(1);
var layer = new OpenLayers.Layer.PointGrid();
t.ok(layer instanceof OpenLayers.Layer.PointGrid, "instance created");
layer.destroy();
}
function test_name(t) {
t.plan(1);
var layer = new OpenLayers.Layer.PointGrid({name: "foo"});
t.eq(layer.name, "foo", "name set like every other property");
layer.destroy();
}
function test_spacing(t) {
t.plan(7);
var layer = new OpenLayers.Layer.PointGrid({
isBaseLayer: true,
resolutions: [1],
maxExtent: new OpenLayers.Bounds(-100, -50, 100, 50),
dx: 10,
dy: 10,
ratio: 1
});
var map = new OpenLayers.Map({
div: "map",
layers: [layer],
center: new OpenLayers.LonLat(0, 0),
zoom: 0
});
t.eq(layer.features.length, 200, "200 features");
// set dx/dy together
layer.setSpacing(20);
t.eq(layer.dx, 20, "dx 20");
t.eq(layer.dy, 20, "dy 20");
t.eq(layer.features.length, 50, "50 features");
// set dx/dy independently
layer.setSpacing(50, 25);
t.eq(layer.dx, 50, "dx 50");
t.eq(layer.dy, 25, "dy 25");
t.eq(layer.features.length, 16, "16 features");
map.destroy();
}
function test_ratio(t) {
t.plan(3);
var layer = new OpenLayers.Layer.PointGrid({
isBaseLayer: true,
resolutions: [1],
maxExtent: new OpenLayers.Bounds(-100, -50, 100, 50),
dx: 25,
dy: 25,
ratio: 1
});
var map = new OpenLayers.Map({
div: "map",
layers: [layer],
center: new OpenLayers.LonLat(0, 0),
zoom: 0
});
t.eq(layer.features.length, 32, "32 features");
// increase ratio (1.5 -> 300 x 150)
layer.setRatio(1.5);
t.eq(layer.ratio, 1.5, "ratio 1.5");
t.eq(layer.features.length, 72, "72 features");
map.destroy();
}
function test_maxFeatures(t) {
t.plan(3);
var layer = new OpenLayers.Layer.PointGrid({
isBaseLayer: true,
resolutions: [1],
maxExtent: new OpenLayers.Bounds(-100, -50, 100, 50),
dx: 10,
dy: 10,
ratio: 1
});
var map = new OpenLayers.Map({
div: "map",
layers: [layer],
center: new OpenLayers.LonLat(0, 0),
zoom: 0
});
t.eq(layer.features.length, 200, "200 features");
// limit maxFeatures
layer.setMaxFeatures(150);
t.eq(layer.maxFeatures, 150, "maxFeatures 150");
t.ok(layer.features.length <= 150, "<= 150 features");
map.destroy();
}
function test_rotation(t) {
t.plan(6);
var layer = new OpenLayers.Layer.PointGrid({
isBaseLayer: true,
resolutions: [1],
maxExtent: new OpenLayers.Bounds(-100, -50, 100, 50),
dx: 10,
dy: 10,
ratio: 1
});
var map = new OpenLayers.Map({
div: "map",
layers: [layer],
center: new OpenLayers.LonLat(0, 0),
zoom: 0
});
function getRotation(layer) {
// grid starts at bottom left and goes up
var g0 = layer.features[0].geometry;
var g1 = layer.features[1].geometry;
// subtract 90 to get rotation of grid
return Math.atan2(g1.y - g0.y, g1.x - g0.x) * (180 / Math.PI) - 90;
}
t.eq(layer.rotation, 0, "0 rotation");
t.eq(getRotation(layer).toFixed(3), (0).toFixed(3), "0 grid")
// rotate grid 25 degrees counter-clockwise
layer.setRotation(25);
t.eq(layer.rotation, 25, "25 rotation");
t.eq(getRotation(layer).toFixed(3), (25).toFixed(3), "25 grid");
// rotate grid 45 degrees clockwise
layer.setRotation(-45);
t.eq(layer.rotation, -45, "-45 rotation");
t.eq(getRotation(layer).toFixed(3), (-45).toFixed(3), "-45 grid");
map.destroy();
}
function test_origin(t) {
t.plan(7);
var layer = new OpenLayers.Layer.PointGrid({
isBaseLayer: true,
resolutions: [1],
maxExtent: new OpenLayers.Bounds(-100, -50, 100, 50),
dx: 10,
dy: 10,
ratio: 1
});
var map = new OpenLayers.Map({
div: "map",
layers: [layer],
center: new OpenLayers.LonLat(0, 0),
zoom: 0
});
var origin = layer.getOrigin();
t.ok(map.getExtent().getCenterLonLat().equals(origin), "default is center of map extent");
var g0 = layer.features[0].geometry;
t.eq((g0.x - origin.lon) % layer.dx, 0, "a) lattice aligned with origin x");
t.eq((g0.y - origin.lat) % layer.dy, 0, "a) lattice aligned with origin y");
// set origin
layer.setOrigin(new OpenLayers.LonLat(-5, 12));
origin = layer.getOrigin();
t.eq(origin.lon, -5, "-5 origin x");
t.eq(origin.lat, 12, "12 origin y");
g0 = layer.features[0].geometry;
t.eq((g0.x - origin.lon) % layer.dx, 0, "b) lattice aligned with origin x");
t.eq((g0.y - origin.lat) % layer.dy, 0, "b) lattice aligned with origin y");
map.destroy();
}
function test_zoom(t) {
t.plan(2);
var layer = new OpenLayers.Layer.PointGrid({
isBaseLayer: true,
resolutions: [2, 1],
maxExtent: new OpenLayers.Bounds(-200, -100, 200, 100),
dx: 20,
dy: 20,
ratio: 1
});
var map = new OpenLayers.Map({
div: "map",
layers: [layer],
center: new OpenLayers.LonLat(0, 0),
zoom: 1,
zoomMethod: null
});
t.eq(layer.features.length, 50, "50 features at zoom 1");
map.zoomTo(0);
t.eq(layer.features.length, 200, "200 features at zoom 0")
map.destroy();
}
</script>
</head>
<body>
<div id="map" style="width:200px;height:100px"></div>
</body>
</html>
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