public URLBuilder(AVList params) {
this.layerNames = params.getStringValue(AVKey.LAYER_NAMES);
this.styleNames = params.getStringValue(AVKey.STYLE_NAMES);
this.imageFormat = params.getStringValue(AVKey.IMAGE_FORMAT);
this.backgroundColor = params.getStringValue(AVKey.WMS_BACKGROUND_COLOR);
String version = params.getStringValue(AVKey.WMS_VERSION);
if (version == null || version.compareTo(MAX_VERSION) >= 0) {
this.wmsVersion = MAX_VERSION;
this.crs = "&crs=CRS:84";
} else {
this.wmsVersion = version;
this.crs = "&srs=EPSG:4326";
}
}
/**
* Appends basic elevation model parameters as elements to a specified context. If a parameter key
* exists, that parameter is appended to the context. This also writes LevelSet parameters by
* invoking {@link DataConfigurationUtils#createLevelSetElements(gov.nasa.worldwind.avlist.AVList,
* org.w3c.dom.Element)}. Supported key and element paths are:
*
* <table> <th><td>Key</td><td>Name</td><td>Type</td></th> <tr><td>{@link
* AVKey#SERVICE_NAME}</td><td>Service/@serviceName</td><td>String</td></tr> <tr><td>{@link
* AVKey#PIXEL_TYPE}</td><td>PixelType</td><td>String</td></tr> <tr><td>{@link AVKey#BYTE_ORDER}</td><td>ByteOrder</td><td>String</td></tr>
* <tr><td>{@link AVKey#ELEVATION_EXTREMES_FILE}</td><td>ExtremeElevations/FileName</td><td>String</td></tr>
* <tr><td>{@link AVKey#ELEVATION_MAX}</td><td>ExtremeElevations/@max</td><td>Double</td></tr> <tr><td>{@link
* AVKey#ELEVATION_MIN}</td><td>ExtremeElevations/@min</td><td>Double</td></tr> </table>
*
* @param params the key-value pairs which define the basic elevation model parameters.
* @param context the XML document root on which to append parameter elements.
* @return a reference to context.
* @throws IllegalArgumentException if either the parameters or the context are null.
*/
public static Element createBasicElevationModelElements(AVList params, Element context) {
if (params == null) {
String message = Logging.getMessage("nullValue.ParametersIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (context == null) {
String message = Logging.getMessage("nullValue.ContextIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
XPath xpath = WWXML.makeXPath();
// LevelSet properties.
DataConfigurationUtils.createLevelSetElements(params, context);
// Service properties.
// Try to get the SERVICE_NAME property, but default to "WWTileService".
String s = AVListImpl.getStringValue(params, AVKey.SERVICE_NAME, "WWTileService");
if (s != null && s.length() > 0) {
// The service element may already exist, in which case we want to append to it.
Element el = WWXML.getElement(context, "Service", xpath);
if (el == null) el = WWXML.appendElementPath(context, "Service");
el.setAttribute("serviceName", s);
}
WWXML.checkAndAppendBooleanElement(
params, AVKey.RETRIEVE_PROPERTIES_FROM_SERVICE, context, "RetrievePropertiesFromService");
// Image format properties.
if (params.getValue(AVKey.PIXEL_TYPE) != null || params.getValue(AVKey.BYTE_ORDER) != null) {
Element el = WWXML.getElement(context, "DataType", null);
if (el == null) el = WWXML.appendElementPath(context, "DataType");
s = params.getStringValue(AVKey.PIXEL_TYPE);
if (s != null && s.length() > 0) {
s = WWXML.dataTypeAsText(s);
if (s != null && s.length() > 0) el.setAttribute("type", s);
}
s = params.getStringValue(AVKey.BYTE_ORDER);
if (s != null && s.length() > 0) {
s = WWXML.byteOrderAsText(s);
if (s != null && s.length() > 0) el.setAttribute("byteOrder", s);
}
}
// Elevation data properties.
Element el = WWXML.appendElementPath(context, "ExtremeElevations");
WWXML.checkAndAppendTextElement(params, AVKey.ELEVATION_EXTREMES_FILE, el, "FileName");
Double d = AVListImpl.getDoubleValue(params, AVKey.ELEVATION_MAX);
if (d != null) el.setAttribute("max", Double.toString(d));
d = AVListImpl.getDoubleValue(params, AVKey.ELEVATION_MIN);
if (d != null) el.setAttribute("min", Double.toString(d));
return context;
}
/**
* Parses WMS elevation model parameters from a specified WMS {@link Capabilities} document. This
* also parses common WMS layer parameters by invoking {@link
* DataConfigurationUtils#getWMSLayerParams(gov.nasa.worldwind.wms.Capabilities, String[],
* gov.nasa.worldwind.avlist.AVList)}. This writes output as key-value pairs to params. Supported
* key and parameter names are:
*
* <table> <th><td>Key</td><td>Value</td><td>Type</td></th> <tr><td>{@link
* AVKey#ELEVATION_MAX}</td><td>WMS layer's maximum extreme elevation</td><td>Double</td></tr> <tr><td>{@link
* AVKey#ELEVATION_MIN}</td><td>WMS layer's minimum extreme elevation</td><td>Double</td></tr> <tr><td>{@link
* AVKey#PIXEL_TYPE}</td><td>Translate WMS layer's image format to a matching pixel type</td><td>String</td></tr>
* </table>
*
* @param caps the WMS Capabilities document to parse for WMS layer parameters.
* @param formatOrderPreference an ordered array of preferred image formats, or null to use the
* default format.
* @param params the output key-value pairs which recieve the WMS layer parameters.
* @return a reference to params.
* @throws IllegalArgumentException if either the document or params are null, or if params does
* not contain the required key-value pairs.
* @throws gov.nasa.worldwind.exception.WWRuntimeException if the Capabilities document does not
* contain any of the required information.
*/
public static AVList getWMSElevationModelParams(
Capabilities caps, String[] formatOrderPreference, AVList params) {
if (caps == null) {
String message = Logging.getMessage("nullValue.WMSCapabilities");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (params == null) {
String message = Logging.getMessage("nullValue.ElevationModelConfigParams");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
DataConfigurationUtils.getWMSLayerParams(caps, formatOrderPreference, params);
// Attempt to extract the WMS layer names from the specified parameters.
String layerNames = params.getStringValue(AVKey.LAYER_NAMES);
if (layerNames == null || layerNames.length() == 0) {
String message = Logging.getMessage("nullValue.WMSLayerNames");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
String[] names = layerNames.split(",");
if (names == null || names.length == 0) {
String message = Logging.getMessage("nullValue.WMSLayerNames");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
// Get the layer's extreme elevations.
Double[] extremes = caps.getLayerExtremeElevations(caps, names);
Double d = (Double) params.getValue(AVKey.ELEVATION_MIN);
if (d == null && extremes != null && extremes[0] != null)
params.setValue(AVKey.ELEVATION_MIN, extremes[0]);
d = (Double) params.getValue(AVKey.ELEVATION_MAX);
if (d == null && extremes != null && extremes[1] != null)
params.setValue(AVKey.ELEVATION_MAX, extremes[1]);
// Determine the internal pixel type from the image format.
if (params.getValue(AVKey.PIXEL_TYPE) == null) {
String imageFormat = params.getStringValue(AVKey.IMAGE_FORMAT);
if (imageFormat != null) {
if (imageFormat.equals("application/bil32"))
params.setValue(AVKey.PIXEL_TYPE, AVKey.FLOAT32);
else if (imageFormat.equals("application/bil16"))
params.setValue(AVKey.PIXEL_TYPE, AVKey.INT16);
else if (imageFormat.equals("application/bil"))
params.setValue(AVKey.PIXEL_TYPE, AVKey.INT16);
else if (imageFormat.equals("image/bil")) params.setValue(AVKey.PIXEL_TYPE, AVKey.INT16);
}
}
// Use the default pixel type.
if (params.getValue(AVKey.PIXEL_TYPE) == null) params.setValue(AVKey.PIXEL_TYPE, AVKey.INT16);
// Use the default byte order.
if (params.getValue(AVKey.BYTE_ORDER) == null)
params.setValue(AVKey.BYTE_ORDER, AVKey.LITTLE_ENDIAN);
return params;
}