Feature: added reading edge crease and if it belongs to a face or not

(this will be used by some modifiers soon).

jme3-blender/src/main/java/com/jme3/scene/plugins/blender/meshes/Edge.java

@@ -20,11 +20,16 @@ import com.jme3.scene.plugins.blender.meshes.IndexesLoop.IndexPredicate;
  */
 public class Edge extends Line {
     private static final long   serialVersionUID      = 7172714692126675311L;
-
     private static final Logger LOGGER                = Logger.getLogger(Edge.class.getName());
 
+    private static final int    FLAG_EDGE_NOT_IN_FACE = 0x80;
+
     /** The vertices indexes. */
     private int                 index1, index2;
+    /** The weight of the edge. */
+    private float               crease;
+    /** A variable that indicates if this edge belongs to any face or not. */
+    private boolean             inFace;
 
     public Edge() {
     }
@@ -36,10 +41,16 @@ public class Edge extends Line {
      *            the first index of the edge
      * @param index2
      *            the second index of the edge
+     * @param crease
+     *            the weight of the face
+     * @param inFace
+     *            a variable that indicates if this edge belongs to any face or not
      */
-    private Edge(int index1, int index2) {
+    private Edge(int index1, int index2, float crease, boolean inFace) {
         this.index1 = index1;
         this.index2 = index2;
+        this.crease = crease;
+        this.inFace = inFace;
     }
 
     /**
@@ -49,17 +60,21 @@ public class Edge extends Line {
      *            the first index of the edge
      * @param index2
      *            the second index of the edge
+     * @param crease
+     *            the weight of the face
+     * @param inFace
+     *            a variable that indicates if this edge belongs to any face or not
      * @param vertices
      *            the vertices of the mesh
      */
-    public Edge(int index1, int index2, List<Vector3f> vertices) {
-        this(index1, index2);
+    public Edge(int index1, int index2, float crease, boolean inFace, List<Vector3f> vertices) {
+        this(index1, index2, crease, inFace);
         this.set(vertices.get(index1), vertices.get(index2));
     }
 
     @Override
     public Edge clone() {
-        Edge result = new Edge(index1, index2);
+        Edge result = new Edge(index1, index2, crease, inFace);
         result.setOrigin(this.getOrigin());
         result.setDirection(this.getDirection());
         return result;
@@ -79,6 +94,20 @@ public class Edge extends Line {
         return index2;
     }
 
+    /**
+     * @return the crease value of the edge (its weight)
+     */
+    public float getCrease() {
+        return crease;
+    }
+
+    /**
+     * @return <b>true</b> if the edge is used by at least one face and <b>false</b> otherwise
+     */
+    public boolean isInFace() {
+        return inFace;
+    }
+
     /**
      * Shifts indexes by a given amount.
      * @param shift
@@ -168,10 +197,13 @@ public class Edge extends Line {
 
     @Override
     public String toString() {
-        String result = "Edge [" + index1 + ", " + index2 + "]";
+        String result = "Edge [" + index1 + ", " + index2 + "] {" + crease + "}";
         if (this.getOrigin() != null && this.getDirection() != null) {
             result += " -> {" + this.getOrigin() + ", " + this.getOrigin().add(this.getDirection()) + "}";
         }
+        if (inFace) {
+            result += "[F]";
+        }
         return result;
     }
 
@@ -217,11 +249,12 @@ public class Edge extends Line {
             List<Structure> edges = pMEdge.fetchData();
             for (Structure edge : edges) {
                 int flag = ((Number) edge.getFieldValue("flag")).intValue();
-                if ((flag & MeshHelper.EDGE_NOT_IN_FACE_FLAG) != 0) {
+
                 int v1 = ((Number) edge.getFieldValue("v1")).intValue();
                 int v2 = ((Number) edge.getFieldValue("v2")).intValue();
-                    result.add(new Edge(v1, v2));
-                }
+                float crease = ((Number) edge.getFieldValue("crease")).floatValue();
+                boolean edgeInFace = (flag & Edge.FLAG_EDGE_NOT_IN_FACE) == 0;
+                result.add(new Edge(v1, v2, crease, edgeInFace));
             }
         }
         LOGGER.log(Level.FINE, "Loaded {0} edges.", result.size());

jme3-blender/src/main/java/com/jme3/scene/plugins/blender/meshes/Face.java

@@ -343,7 +343,7 @@ public class Face implements Comparator<Integer> {
             if (i != index && i != indexToIgnore) {
                 Vector3f v2 = vertices.get(i);
                 float d = v2.distance(v1);
-                if (d < distance && this.contains(new Edge(index, i, vertices))) {
+                if (d < distance && this.contains(new Edge(index, i, 0, true, vertices))) {
                     result = i;
                     distance = d;
                 }

jme3-blender/src/main/java/com/jme3/scene/plugins/blender/meshes/MeshHelper.java

@@ -68,8 +68,6 @@ public class MeshHelper extends AbstractBlenderHelper {
     public static final int     UV_DATA_LAYER_TYPE_FMESH = 5;
     /** A type of UV data layer in bmesh type. */
     public static final int     UV_DATA_LAYER_TYPE_BMESH = 16;
-    /** The flag mask indicating if the edge belongs to a face or not. */
-    public static final int     EDGE_NOT_IN_FACE_FLAG    = 0x80;
 
     /** A material used for single lines and points. */
     private Material            blackUnshadedMaterial;

jme3-blender/src/main/java/com/jme3/scene/plugins/blender/meshes/TemporalMesh.java

@@ -495,7 +495,12 @@ public class TemporalMesh extends Geometry {
             LOGGER.fine("Preparing lines geometries.");
 
             List<List<Integer>> separateEdges = new ArrayList<List<Integer>>();
-            List<Edge> edges = new ArrayList<Edge>(this.edges);
+            List<Edge> edges = new ArrayList<Edge>(this.edges.size());
+            for (Edge edge : this.edges) {
+                if (!edge.isInFace()) {
+                    edges.add(edge);
+                }
+            }
             while (edges.size() > 0) {
                 boolean edgeAppended = false;
                 int edgeIndex = 0;