/**
* Given a row from the ring primitive table, navigate the ring and edge primitive tables to
* construct a new {@link VPFPrimitiveData.Ring}.
*
* @param row the ring primitive row.
* @param edgeInfoArray the edge primitive data.
* @return a new Ring.
*/
protected VPFPrimitiveData.Ring buildRing(
VPFRecord row, VPFPrimitiveData.PrimitiveInfo[] edgeInfoArray) {
int faceId = ((Number) row.getValue("face_id")).intValue();
int startEdgeId = ((Number) row.getValue("start_edge")).intValue();
VPFWingedEdgeTraverser traverser = new VPFWingedEdgeTraverser();
// Traverse the ring to collect the number of edges which define the ring.
final int numEdges = traverser.traverseRing(faceId, startEdgeId, edgeInfoArray, null);
final int[] idArray = new int[numEdges];
final int[] orientationArray = new int[numEdges];
// Traverse the ring again, but this time populate an entry for the primitiveID and orientation
// data stuctures
// for each edge.
traverser.traverseRing(
faceId,
startEdgeId,
edgeInfoArray,
new VPFWingedEdgeTraverser.EdgeTraversalListener() {
public void nextEdge(int index, int primitiveId, boolean reverseCoordinates) {
idArray[index] = primitiveId;
orientationArray[index] = reverseCoordinates ? -1 : 1;
}
});
return new VPFPrimitiveData.Ring(numEdges, idArray, orientationArray);
}
/**
* Returns the extent ("xmin", "ymin", "xmax", "ymax") for the specified row as a {@link
* VPFBoundingBox}.
*
* @param record the record to extract the bound attributes from.
* @return extent of the specified row.
*/
public static VPFBoundingBox getExtent(VPFRecord record) {
if (record == null) {
String message = Logging.getMessage("nullValue.RecordIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
return new VPFBoundingBox(
((Number) record.getValue("xmin")).doubleValue(),
((Number) record.getValue("ymin")).doubleValue(),
((Number) record.getValue("xmax")).doubleValue(),
((Number) record.getValue("ymax")).doubleValue());
}
protected static boolean isEdgeOnTileBoundary(VPFRecord record) {
VPFTripletId id = null;
Object o = record.getValue("left_face");
if (o instanceof VPFTripletId) id = (VPFTripletId) o;
if (id == null) {
o = record.getValue("right_face");
if (o instanceof VPFTripletId) id = (VPFTripletId) o;
}
return id != null && id.getExtId() > 0;
}
public static void checkAndSetValue(
VPFRecord record, String paramName, String paramKey, AVList params) {
if (record == null) {
String message = Logging.getMessage("nullValue.RecordIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (paramName == null) {
String message = Logging.getMessage("nullValue.ParameterNameIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (paramKey == null) {
String message = Logging.getMessage("nullValue.ParameterKeyIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (params == null) {
String message = Logging.getMessage("nullValue.ParamsIsNull");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (record.hasValue(paramName)) {
Object o = record.getValue(paramName);
if (o != null) params.setValue(paramKey, o);
}
}
protected void buildEdgePrimitives(
VPFCoverage coverage, VPFTile tile, VPFPrimitiveData primitiveData) {
VPFBufferedRecordData edgeTable =
this.createPrimitiveTable(coverage, tile, VPFConstants.EDGE_PRIMITIVE_TABLE);
if (edgeTable == null || edgeTable.getNumRecords() == 0) return;
VPFBufferedRecordData mbrTable =
this.createPrimitiveTable(coverage, tile, VPFConstants.EDGE_BOUNDING_RECTANGLE_TABLE);
if (mbrTable == null) return;
int numEdges = edgeTable.getNumRecords();
VPFPrimitiveData.EdgeInfo[] edgeInfo = new VPFPrimitiveData.EdgeInfo[numEdges];
VecBufferSequence coords =
(VecBufferSequence) edgeTable.getRecordData("coordinates").getBackingData();
for (VPFRecord row : edgeTable) {
int id = row.getId();
VPFRecord mbrRow = mbrTable.getRecord(id);
edgeInfo[VPFBufferedRecordData.indexFromId(id)] =
new VPFPrimitiveData.EdgeInfo(
getNumber(row.getValue("edge_type")),
getId(row.getValue("start_node")),
getNumber(row.getValue("end_node")),
getId(row.getValue("left_face")),
getId(row.getValue("right_face")),
getId(row.getValue("left_edge")),
getId(row.getValue("right_edge")),
isEdgeOnTileBoundary(row),
VPFUtils.getExtent(mbrRow));
}
primitiveData.setPrimitiveInfo(VPFConstants.EDGE_PRIMITIVE_TABLE, edgeInfo);
primitiveData.setPrimitiveCoords(VPFConstants.EDGE_PRIMITIVE_TABLE, coords);
}
protected void buildFacePrimitives(
VPFCoverage coverage, VPFTile tile, VPFPrimitiveData primitiveData) {
VPFBufferedRecordData faceTable =
this.createPrimitiveTable(coverage, tile, VPFConstants.FACE_PRIMITIVE_TABLE);
if (faceTable == null) return;
VPFBufferedRecordData mbrTable =
this.createPrimitiveTable(coverage, tile, VPFConstants.FACE_BOUNDING_RECTANGLE_TABLE);
if (mbrTable == null) return;
VPFBufferedRecordData ringTable =
this.createPrimitiveTable(coverage, tile, VPFConstants.RING_TABLE);
if (ringTable == null) return;
VPFPrimitiveData.PrimitiveInfo[] edgeInfo =
primitiveData.getPrimitiveInfo(VPFConstants.EDGE_PRIMITIVE_TABLE);
int numFaces = faceTable.getNumRecords();
VPFPrimitiveData.FaceInfo[] faceInfo = new VPFPrimitiveData.FaceInfo[numFaces];
for (VPFRecord faceRow : faceTable) {
int faceId = faceRow.getId();
VPFRecord mbrRow = mbrTable.getRecord(faceId);
// Face ID 1 is reserved for the "universe face", which does not have any associated geometry.
if (faceId == 1) continue;
// The first ring primitive associated with the face primitive defines the outer ring. The
// face primitive must
// at least contain coordinates for an outer ring.
int ringId = ((Number) faceRow.getValue("ring_ptr")).intValue();
VPFRecord ringRow = ringTable.getRecord(ringId);
VPFPrimitiveData.Ring outerRing = this.buildRing(ringRow, edgeInfo);
// The ring table maintains an order relationship for its rows. The first record of a new face
// id will always
// be defined as the outer ring. Any repeating records with an identical face value will
// define inner rings.
ArrayList<VPFPrimitiveData.Ring> innerRingList = new ArrayList<VPFPrimitiveData.Ring>();
for (ringId = ringId + 1; ringId <= ringTable.getNumRecords(); ringId++) {
ringRow = ringTable.getRecord(ringId);
// Break on the first ring primitive row which isn't associated with the face. Because the
// ring rows
// maintain an ordering with respect to face id, there will be no other ring rows
// corresponding to this
// face.
if (faceId != getId(ringRow.getValue("face_id"))) break;
VPFPrimitiveData.Ring innerRing = this.buildRing(ringRow, edgeInfo);
if (innerRing != null) innerRingList.add(innerRing);
}
VPFPrimitiveData.Ring[] innerRings = new VPFPrimitiveData.Ring[innerRingList.size()];
innerRingList.toArray(innerRings);
faceInfo[VPFBufferedRecordData.indexFromId(faceId)] =
new VPFPrimitiveData.FaceInfo(outerRing, innerRings, VPFUtils.getExtent(mbrRow));
}
primitiveData.setPrimitiveInfo(VPFConstants.FACE_PRIMITIVE_TABLE, faceInfo);
}