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);
}