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OpenLayers.ProxyHost = 'proxy.cgi?url=';
var map, client, intersect, buffer;
function init() {
map = new OpenLayers.Map('map', {
allOverlays: true,
center: [114, 16],
zoom: 4,
layers: [new OpenLayers.Layer.Vector()]
});
var features = [new OpenLayers.Feature.Vector(OpenLayers.Geometry.fromWKT(
'LINESTRING(117 22,112 18,118 13, 115 8)'
))];
var geometry = OpenLayers.Geometry.fromWKT(
'POLYGON((110 20,120 20,120 10,110 10,110 20),(112 17,118 18,118 16,112 15,112 17))'
);
map.baseLayer.addFeatures(features);
map.baseLayer.addFeatures([new OpenLayers.Feature.Vector(geometry)]);
client = new OpenLayers.WPSClient({
servers: {
opengeo: 'http://demo.opengeo.org/geoserver/wps'
}
});
// Create a process and configure it
intersect = client.getProcess('opengeo', 'JTS:intersection');
intersect.configure({
// spatial input can be a feature or a geometry or an array of
// features or geometries
inputs: {
a: features,
b: geometry
}
});
// Create another process which chains the previous one and execute it
buffer = client.getProcess('opengeo', 'JTS:buffer');
buffer.execute({
inputs: {
geom: intersect.output(),
distance: 1
},
success: function(outputs) {
// outputs.result is a feature or an array of features for spatial
// processes.
map.baseLayer.addFeatures(outputs.result);
}
});
// Instead of creating a process and executing it, we could call execute on
// the client directly if we are only dealing with a single process:
/*
client.execute({
server: "opengeo",
process: "JTS:intersection",
// spatial input can be a feature or a geometry or an array of
// features or geometries
inputs: {
a: features,
b: geometry
},
success: function(outputs) {
// outputs.result is a feature or an array of features for spatial
// processes.
map.baseLayer.addFeatures(outputs.result);
}
});
*/
}
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