--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/raster/JTSMultiLineStringProducer.java	Mon Jan 11 00:29:45 2010 +0000
@@ -0,0 +1,140 @@
+package de.intevation.gnv.raster;
+
+import java.util.List;
+import java.util.ArrayList;
+
+import org.apache.log4j.Logger;
+
+import com.vividsolutions.jts.geom.GeometryFactory;
+import com.vividsolutions.jts.geom.MultiLineString;
+import com.vividsolutions.jts.geom.LineString;
+import com.vividsolutions.jts.geom.Coordinate;
+
+import gnu.trove.TIntObjectHashMap;
+
+import de.intevation.gnv.raster.Vectorizer.Edge;
+
+import de.intevation.gnv.utils.Pair;
+
+import de.intevation.gnv.math.IJKey;
+
+/**
+ * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
+ */
+public class JTSMultiLineStringProducer
+extends      IsoProducer
+{
+    private static Logger log = Logger.getLogger(
+        JTSMultiLineStringProducer.class);
+
+    protected GeometryFactory geometryFactory;
+
+    public JTSMultiLineStringProducer(
+        double minX, double minY,
+        double maxX, double maxY
+    ) {
+        this(
+            JTSMultiPolygonProducer.createDefaultGeometryFactory(),
+            minX, minY,
+            maxX, maxY);
+    }
+
+    public JTSMultiLineStringProducer(
+        GeometryFactory geometryFactory,
+        double minX, double minY,
+        double maxX, double maxY
+    ) {
+        super(minX, minY, maxX, maxY);
+        this.geometryFactory = geometryFactory;
+    }
+
+    public List<Pair<Object, MultiLineString>> getMultiLineStrings(
+        AttributeGenerator attributeGenerator
+    ) {
+        ArrayList<Pair<Object, MultiLineString>> multiLineStrings =
+            new ArrayList<Pair<Object, MultiLineString>>();
+
+        double b1 = minX;
+        double m1 = width != 1
+            ? (maxX - minX)/(width-1)
+            : 0d;
+
+         double b2 = minY;
+         double m2 = height != 1
+            ? (maxY - minY)/(height-1)
+            : 0d;
+
+        ArrayList<Coordinate> coordinates = new ArrayList<Coordinate>();
+
+        for (IJKey key: joinPairs()) {
+            ArrayList<LineString> lineStrings = new ArrayList<LineString>();
+
+            // process complete
+            ArrayList<Edge> completeList = complete.get(key);
+            if (completeList != null) {
+                for (Edge head: completeList) {
+                    Edge current = head;
+                    do {
+                        coordinates.add(new Coordinate(
+                            m1*(current.a % width) + b1,
+                            m2*(current.a / width) + b2));
+                    }
+                    while ((current = current.next) != head);
+                    // add head again to close shape
+                    coordinates.add(new Coordinate(
+                        m1*(head.a % width) + b1,
+                        m2*(head.a / width) + b2));
+                    lineStrings.add(
+                        geometryFactory.createLineString(
+                            coordinates.toArray(
+                                new Coordinate[coordinates.size()])));
+                    coordinates.clear();
+                }
+            }
+
+            // process open
+            TIntObjectHashMap map = commonOpen.get(key);
+
+            if (map != null) {
+                for (Edge head: headList(map)) {
+
+                    head = Vectorizer.simplify(head, width);
+                    Edge current = head, last = head;
+                    do {
+                        coordinates.add(new Coordinate(
+                            m1*(current.a % width) + b1,
+                            m2*(current.a / width) + b2));
+                        last = current;
+                    }
+                    while ((current = current.next) != null);
+                    // add b from tail
+                    coordinates.add(new Coordinate(
+                        m1*(last.b % width) + b1,
+                        m2*(last.b / width) + b2));
+                    lineStrings.add(
+                        geometryFactory.createLineString(
+                            coordinates.toArray(
+                                new Coordinate[coordinates.size()])));
+                    coordinates.clear();
+                } // for all in common open
+            } // if map defined for key
+
+			if (!lineStrings.isEmpty()) {
+                MultiLineString multiLineString =
+                    geometryFactory.createMultiLineString(
+                        lineStrings.toArray(
+                            new LineString[lineStrings.size()]));
+                lineStrings.clear();
+                Object attribute = attributeGenerator != null
+                    ? attributeGenerator.generateAttribute(key.i, key.j)
+                    : key;
+                multiLineStrings.add(new Pair<Object, MultiLineString>(
+                    attribute,
+                    multiLineString));
+			}
+        } // for all pairs
+
+        return multiLineStrings;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :