5fff368a2d
This commit addresses @bartvde's review comments, adds more documentation, and fixes asynchronous function calls. Previously, when creating multiple processes with the same identifier, the describe callback would only have been called for the first process. This was fixed to move DescribeProcess handling from WPSProcess to WPSClient.
75 lines
2.2 KiB
JavaScript
75 lines
2.2 KiB
JavaScript
OpenLayers.ProxyHost = 'proxy.cgi?url=';
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var map, client, intersect, buffer;
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function init() {
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map = new OpenLayers.Map('map', {
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allOverlays: true,
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center: [114, 16],
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zoom: 4,
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layers: [new OpenLayers.Layer.Vector()]
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});
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var features = [new OpenLayers.Format.WKT().read(
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'LINESTRING(117 22,112 18,118 13, 115 8)'
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)];
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var geometry = (new OpenLayers.Format.WKT().read(
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'POLYGON((110 20,120 20,120 10,110 10,110 20),(112 17,118 18,118 16,112 15,112 17))'
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)).geometry;
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map.baseLayer.addFeatures(features);
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map.baseLayer.addFeatures([new OpenLayers.Feature.Vector(geometry)]);
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client = new OpenLayers.WPSClient({
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servers: {
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opengeo: 'http://demo.opengeo.org/geoserver/wps'
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}
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});
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// Create a process and configure it
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intersect = client.getProcess('opengeo', 'JTS:intersection');
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intersect.configure({
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// spatial input can be a feature or a geometry or an array of
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// features or geometries
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inputs: {
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a: features,
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b: geometry
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}
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});
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// Create another process which chains the previous one and execute it
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buffer = client.getProcess('opengeo', 'JTS:buffer');
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buffer.execute({
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inputs: {
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geom: intersect.output(),
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distance: 1
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},
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success: function(outputs) {
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// outputs.result is a feature or an array of features for spatial
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// processes.
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map.baseLayer.addFeatures(outputs.result);
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}
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});
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// Instead of creating a process and executing it, we could call execute on
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// the client directly if we are only dealing with a single process:
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/*
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client.execute({
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server: "opengeo",
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process: "JTS:intersection",
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// spatial input can be a feature or a geometry or an array of
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// features or geometries
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inputs: {
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a: features,
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b: geometry
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},
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success: function(outputs) {
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// outputs.result is a feature or an array of features for spatial
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// processes.
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map.baseLayer.addFeatures(outputs.result);
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}
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});
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*/
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} |