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<html>
<head>
<script src="../OLLoader.js"></script>
<script type="text/javascript">
var points = [];
for(var i=0; i<12; ++i) {
points.push(new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Point(Math.random() * 100,
Math.random() * 100))
);
}
var multipoint = new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.MultiPoint([
points[0].geometry,
points[1].geometry,
points[2].geometry
])
);
var linestrings = [
new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.LineString([
points[0].geometry,
points[1].geometry,
points[2].geometry
])
),
new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.LineString([
points[3].geometry,
points[4].geometry,
points[5].geometry
])
)
];
var multilinestring = new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.MultiLineString([
linestrings[0].geometry,
linestrings[1].geometry
])
);
var rings = [
new OpenLayers.Geometry.LinearRing([
points[0].geometry,
points[1].geometry,
points[2].geometry
]),
new OpenLayers.Geometry.LinearRing([
points[3].geometry,
points[4].geometry,
points[5].geometry
]),
new OpenLayers.Geometry.LinearRing([
points[6].geometry,
points[7].geometry,
points[8].geometry
]),
new OpenLayers.Geometry.LinearRing([
points[9].geometry,
points[10].geometry,
points[11].geometry
])
];
var polygons = [
new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Polygon([rings[0], rings[1]])
),
new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Polygon([rings[2], rings[3]])
)
];
var multipolygon = new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.MultiPolygon([
polygons[0].geometry,
polygons[1].geometry
])
);
var collection = new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Collection([
points[0].geometry,
linestrings[0].geometry
])
);
var geom_array = [points[0], linestrings[0]];
function test_Format_WKT_constructor(t) {
t.plan(4);
var options = {'foo': 'bar'};
var format = new OpenLayers.Format.WKT(options);
t.ok(format instanceof OpenLayers.Format.WKT,
"new OpenLayers.Format.WKT returns object" );
t.eq(format.foo, "bar", "constructor sets options correctly");
t.eq(typeof format.read, "function", "format has a read function");
t.eq(typeof format.write, "function", "format has a write function");
}
function test_Format_WKT_write(t) {
t.plan(8);
var format = new OpenLayers.Format.WKT();
// test a point
t.eq(format.write(points[0]),
"POINT(" + points[0].geometry.x + " " + points[0].geometry.y + ")",
"format correctly writes Point WKT");
// test a multipoint
t.eq(format.write(multipoint),
"MULTIPOINT((" + points[0].geometry.x + " " + points[0].geometry.y + "),(" +
points[1].geometry.x + " " + points[1].geometry.y + "),(" +
points[2].geometry.x + " " + points[2].geometry.y + "))",
"format correctly writes MultiPoint WKT");
// test a linestring
t.eq(format.write(linestrings[0]),
"LINESTRING(" + points[0].geometry.x + " " + points[0].geometry.y + "," +
points[1].geometry.x + " " + points[1].geometry.y + "," +
points[2].geometry.x + " " + points[2].geometry.y + ")",
"format correctly writes LineString WKT");
// test a multilinestring
t.eq(format.write(multilinestring),
"MULTILINESTRING((" + points[0].geometry.x + " " + points[0].geometry.y + "," +
points[1].geometry.x + " " + points[1].geometry.y + "," +
points[2].geometry.x + " " + points[2].geometry.y + ")," +
"(" + points[3].geometry.x + " " + points[3].geometry.y + "," +
points[4].geometry.x + " " + points[4].geometry.y + "," +
points[5].geometry.x + " " + points[5].geometry.y + "))",
"format correctly writes MultiLineString WKT");
// test a polygon
t.eq(format.write(polygons[0]),
"POLYGON((" + points[0].geometry.x + " " + points[0].geometry.y + "," +
points[1].geometry.x + " " + points[1].geometry.y + "," +
points[2].geometry.x + " " + points[2].geometry.y + "," +
points[0].geometry.x + " " + points[0].geometry.y + ")," +
"(" + points[3].geometry.x + " " + points[3].geometry.y + "," +
points[4].geometry.x + " " + points[4].geometry.y + "," +
points[5].geometry.x + " " + points[5].geometry.y + "," +
points[3].geometry.x + " " + points[3].geometry.y + "))",
"format correctly writes Polygon WKT");
// test a multipolygon
t.eq(format.write(multipolygon),
"MULTIPOLYGON(((" + points[0].geometry.x + " " + points[0].geometry.y + "," +
points[1].geometry.x + " " + points[1].geometry.y + "," +
points[2].geometry.x + " " + points[2].geometry.y + "," +
points[0].geometry.x + " " + points[0].geometry.y + ")," +
"(" + points[3].geometry.x + " " + points[3].geometry.y + "," +
points[4].geometry.x + " " + points[4].geometry.y + "," +
points[5].geometry.x + " " + points[5].geometry.y + "," +
points[3].geometry.x + " " + points[3].geometry.y + "))," +
"((" + points[6].geometry.x + " " + points[6].geometry.y + "," +
points[7].geometry.x + " " + points[7].geometry.y + "," +
points[8].geometry.x + " " + points[8].geometry.y + "," +
points[6].geometry.x + " " + points[6].geometry.y + ")," +
"(" + points[9].geometry.x + " " + points[9].geometry.y + "," +
points[10].geometry.x + " " + points[10].geometry.y + "," +
points[11].geometry.x + " " + points[11].geometry.y + "," +
points[9].geometry.x + " " + points[9].geometry.y + ")))",
"format correctly writes MultiPolygon WKT");
// test geometrycollection
t.eq(format.write(collection),
"GEOMETRYCOLLECTION(POINT(" + points[0].geometry.x + " " + points[0].geometry.y + ")," +
"LINESTRING(" + points[0].geometry.x + " " + points[0].geometry.y + "," +
points[1].geometry.x + " " + points[1].geometry.y + "," +
points[2].geometry.x + " " + points[2].geometry.y + "))",
"format correctly writes GeometryCollection WKT");
// test writing an array of geometries
t.eq(format.write(geom_array),
"GEOMETRYCOLLECTION(POINT(" + points[0].geometry.x + " " + points[0].geometry.y + ")," +
"LINESTRING(" + points[0].geometry.x + " " + points[0].geometry.y + "," +
points[1].geometry.x + " " + points[1].geometry.y + "," +
points[2].geometry.x + " " + points[2].geometry.y + "))",
"format correctly writes WKT for an array of Geometries");
}
function test_Format_WKT_read(t) {
t.plan(13);
var format = new OpenLayers.Format.WKT();
/**
* Since we're explicitly testing calls to write, the read tests
* just make sure that geometry can make a round trip from read to write.
*/
// test a point
t.ok(points[0].geometry.equals(format.read(format.write(points[0])).geometry),
"format correctly reads Point WKT");
// test a multipoint
t.ok(multipoint.geometry.equals(format.read(format.write(multipoint)).geometry),
"format correctly reads MultiPoint WKT");
// test a multipoint without separating parens
t.ok(multipoint.geometry.equals(format.read(
"MULTIPOINT(" + points[0].geometry.x + " " + points[0].geometry.y + "," +
points[1].geometry.x + " " + points[1].geometry.y + "," +
points[2].geometry.x + " " + points[2].geometry.y + ")").geometry),
"format correctly reads MultiPoint WKT without parens");
// test a linestring
t.ok(linestrings[0].geometry.equals(format.read(format.write(linestrings[0])).geometry),
"format correctly reads LineString WKT");
// test a multilinestring
t.ok(multilinestring.geometry.equals(format.read(format.write(multilinestring)).geometry),
"format correctly reads MultiLineString WKT");
// test a polygon
t.ok(polygons[0].geometry.equals(format.read(format.write(polygons[0])).geometry),
"format correctly reads Polygon WKT");
// test a multipolygon
t.ok(multipolygon.geometry.equals(format.read(format.write(multipolygon)).geometry),
"format correctly reads MultiPolygon WKT");
// test a collection
var wkt = format.write(collection);
var got = format.read(wkt);
t.ok(got instanceof Array, "by default, reading a collection returns an array");
t.eq(got.length, 2, "read two items");
t.ok(got[0] instanceof OpenLayers.Feature.Vector, "first item is a feature");
t.geom_eq(got[0].geometry, points[0].geometry, "first feature's geometry is the correct point");
t.ok(got[1] instanceof OpenLayers.Feature.Vector, "second item is a feature");
t.geom_eq(got[1].geometry, linestrings[0].geometry, "second feature's geometry is the correct linestring");
}
function test_whitespace(t) {
t.plan(3);
var wkt = "LINESTRING(7.120068\t43.583917,\n7.120154 43.583652,\n7.120385\t43.582716,\r\n7.12039 43.582568, 7.120712 43.581511,7.120873\n43.580718)";
var format = new OpenLayers.Format.WKT();
var got = format.read(wkt);
t.ok(got instanceof OpenLayers.Feature.Vector, "read a feature");
t.ok(got.geometry instanceof OpenLayers.Geometry.LineString, "read a linestring");
t.ok(got.geometry.components.length, 6, "read a geometry with 6 components");
}
function test_Format_WKT_read_projection(t) {
t.plan(1);
var projections = {
src: new OpenLayers.Projection("EPSG:4326"),
dest: new OpenLayers.Projection("EPSG:900913")
},
points = {
src: new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Point(-87.9, 41.9)
),
dest: new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Point(-9784983.2393667, 5146011.6785665)
)
},
format = new OpenLayers.Format.WKT({
externalProjection: projections["src"],
internalProjection: projections["dest"]
}),
gc_wkt_parts = [
"GEOMETRYCOLLECTION(",
"POINT(",
points["src"].geometry.x,
" ",
points["src"].geometry.y,
")",
")"
],
feature = format.read( gc_wkt_parts.join("") )[0],
gotGeom = feature.geometry,
expectGeom = points["dest"].geometry,
// we don't use geometry::toString because we might run into
// precision issues
precision = 7,
got = gotGeom.x.toFixed(precision) + ' ' + gotGeom.y.toFixed(precision),
expected = expectGeom.x.toFixed(precision) + ' ' + expectGeom.y.toFixed(precision);
t.eq(got, expected,
"Geometry collections aren't transformed twice when reprojection.");
}
</script>
</head>
<body>
</body>
</html>
|
