Refactoring: storing importer custom data in blender context instead of loaded features. This way there will be no conflict between the custom data names and user's properties names and no unwanted additional data will be stored in the result features.

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10587 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/blender/com/jme3/scene/plugins/blender/BlenderContext.java

@@ -114,6 +114,8 @@ public class BlenderContext {
     protected Map<Long, BoneContext>            boneContexts           = new HashMap<Long, BoneContext>();
     /** A map og helpers that perform loading. */
     private Map<String, AbstractBlenderHelper>  helpers                = new HashMap<String, AbstractBlenderHelper>();
+    /** Markers used by loading classes to store some custom data. This is made to avoid putting this data into user properties. */
+    private Map<String, Map<Object, Object>>    markers                = new HashMap<String, Map<Object,Object>>();
     
     /**
      * This method sets the blender file version.
@@ -563,6 +565,44 @@ public class BlenderContext {
         return blenderKey.getDefaultMaterial();
     }
     
+    /**
+     * Adds a custom marker for scene's feature.
+     * 
+     * @param marker
+     *            the marker name
+     * @param feature
+     *            te scene's feature (can be node, material or texture or
+     *            anything else)
+     * @param markerValue
+     *            the marker value
+     */
+    public void addMarker(String marker, Object feature, Object markerValue) {
+        if (markerValue == null) {
+            throw new IllegalArgumentException("The marker's value cannot be null.");
+        }
+        Map<Object, Object> markersMap = markers.get(marker);
+        if (markersMap == null) {
+            markersMap = new HashMap<Object, Object>();
+            markers.put(marker, markersMap);
+        }
+        markersMap.put(feature, markerValue);
+    }
+
+    /**
+     * Returns the marker value. The returned value is null if no marker was
+     * defined for the given feature.
+     * 
+     * @param marker
+     *            the marker name
+     * @param feature
+     *            the scene's feature
+     * @return marker value or null if it was not defined
+     */
+    public Object getMarkerValue(String marker, Object feature) {
+        Map<Object, Object> markersMap = markers.get(marker);
+        return markersMap == null ? null : markersMap.get(feature);
+    }
+
     /**
      * Clears all sotred resources and closes the blender input stream.
      */
@@ -580,6 +620,7 @@ public class BlenderContext {
         helpers.clear();
         fileBlockHeadersByOma.clear();
         fileBlockHeadersByCode.clear();
+        markers.clear();
     }
 
     /**

engine/src/blender/com/jme3/scene/plugins/blender/constraints/BoneConstraint.java

@@ -51,7 +51,7 @@ import com.jme3.scene.plugins.blender.file.Structure;
             }
             // the second part of the if expression verifies if the found node
             // (if any) is an armature node
-            if (nodeTarget.getUserData(ArmatureHelper.ARMATURE_NODE_MARKER) != null) {
+            if (blenderContext.getMarkerValue(ArmatureHelper.ARMATURE_NODE_MARKER, nodeTarget) != null) {
                 if(subtargetName.trim().isEmpty()) {
                     LOGGER.log(Level.WARNING, "No bone target specified for constraint: {0}.", name);
                     return false;

engine/src/blender/com/jme3/scene/plugins/blender/constraints/ConstraintHelper.java

@@ -25,6 +25,7 @@ import com.jme3.scene.plugins.blender.animations.IpoHelper;
 import com.jme3.scene.plugins.blender.exceptions.BlenderFileException;
 import com.jme3.scene.plugins.blender.file.Pointer;
 import com.jme3.scene.plugins.blender.file.Structure;
+import com.jme3.scene.plugins.blender.objects.ObjectHelper;
 
 /**
  * This class should be used for constraint calculations.
@@ -195,7 +196,7 @@ public class ConstraintHelper extends AbstractBlenderHelper {
                     while (spatial.getParent() != null) {
                         spatial = spatial.getParent();
                     }
-                    simulationRootNodes.add(new SimulationNode((Long) spatial.getUserData("oma"), blenderContext));
+                    simulationRootNodes.add(new SimulationNode((Long) blenderContext.getMarkerValue(ObjectHelper.OMA_MARKER, spatial), blenderContext));
                 } else {
                     throw new IllegalStateException("Unsupported constraint type: " + constraint);
                 }
@@ -220,7 +221,7 @@ public class ConstraintHelper extends AbstractBlenderHelper {
      */
     public Transform getTransform(Long oma, String subtargetName, Space space) {
         Spatial feature = (Spatial) blenderContext.getLoadedFeature(oma, LoadedFeatureDataType.LOADED_FEATURE);
-        boolean isArmature = feature.getUserData(ArmatureHelper.ARMATURE_NODE_MARKER) != null;
+        boolean isArmature = blenderContext.getMarkerValue(ArmatureHelper.ARMATURE_NODE_MARKER, feature) != null;
         if (isArmature) {
             BoneContext targetBoneContext = blenderContext.getBoneByName(subtargetName);
             Bone bone = targetBoneContext.getBone();
@@ -269,9 +270,9 @@ public class ConstraintHelper extends AbstractBlenderHelper {
         } else {
             switch (space) {
                 case CONSTRAINT_SPACE_LOCAL:
-                    return ((Spatial) feature).getLocalTransform();
+                    return feature.getLocalTransform();
                 case CONSTRAINT_SPACE_WORLD:
-                    return ((Spatial) feature).getWorldTransform();
+                    return feature.getWorldTransform();
                 case CONSTRAINT_SPACE_PARLOCAL:
                 case CONSTRAINT_SPACE_POSE:
                     throw new IllegalStateException("Nodes can have only Local and World spaces applied!");
@@ -297,7 +298,7 @@ public class ConstraintHelper extends AbstractBlenderHelper {
      */
     public void applyTransform(Long oma, String subtargetName, Space space, Transform transform) {
         Spatial feature = (Spatial) blenderContext.getLoadedFeature(oma, LoadedFeatureDataType.LOADED_FEATURE);
-        boolean isArmature = feature.getUserData(ArmatureHelper.ARMATURE_NODE_MARKER) != null;
+        boolean isArmature = blenderContext.getMarkerValue(ArmatureHelper.ARMATURE_NODE_MARKER, feature) != null;
         if (isArmature) {
             Skeleton skeleton = blenderContext.getSkeleton(oma);
             BoneContext targetBoneContext = blenderContext.getBoneByName(subtargetName);
@@ -354,17 +355,16 @@ public class ConstraintHelper extends AbstractBlenderHelper {
                 default:
                     throw new IllegalStateException("Invalid space type for target object: " + space.toString());
             }
-        } else if (feature instanceof Spatial) {
-            Spatial spatial = (Spatial) feature;
+        } else {
             switch (space) {
                 case CONSTRAINT_SPACE_LOCAL:
-                    spatial.getLocalTransform().set(transform);
+                    feature.getLocalTransform().set(transform);
                     break;
                 case CONSTRAINT_SPACE_WORLD:
-                    if (spatial.getParent() == null) {
-                        spatial.setLocalTransform(transform);
+                    if (feature.getParent() == null) {
+                        feature.setLocalTransform(transform);
                     } else {
-                        Transform parentWorldTransform = spatial.getParent().getWorldTransform();
+                        Transform parentWorldTransform = feature.getParent().getWorldTransform();
 
                         Matrix4f parentMatrix = this.toMatrix(parentWorldTransform).invertLocal();
                         Matrix4f m = this.toMatrix(transform);
@@ -374,14 +374,12 @@ public class ConstraintHelper extends AbstractBlenderHelper {
                         transform.setRotation(m.toRotationQuat());
                         transform.setScale(m.toScaleVector());
 
-                        spatial.setLocalTransform(transform);
+                        feature.setLocalTransform(transform);
                     }
                     break;
                 default:
                     throw new IllegalStateException("Invalid space type for spatial object: " + space.toString());
             }
-        } else {
-            throw new IllegalStateException("Constrained transformation can be applied only to Bone or Spatial feature!");
         }
     }
 

engine/src/blender/com/jme3/scene/plugins/blender/constraints/SimulationNode.java

@@ -25,6 +25,7 @@ import com.jme3.scene.plugins.blender.BlenderContext;
 import com.jme3.scene.plugins.blender.BlenderContext.LoadedFeatureDataType;
 import com.jme3.scene.plugins.blender.animations.ArmatureHelper;
 import com.jme3.scene.plugins.blender.animations.BoneContext;
+import com.jme3.scene.plugins.blender.objects.ObjectHelper;
 import com.jme3.util.TempVars;
 
 /**
@@ -89,7 +90,7 @@ public class SimulationNode {
      */
     private SimulationNode(Long featureOMA, BlenderContext blenderContext, boolean rootNode) {
         Node spatial = (Node) blenderContext.getLoadedFeature(featureOMA, LoadedFeatureDataType.LOADED_FEATURE);
-        if (spatial.getUserData(ArmatureHelper.ARMATURE_NODE_MARKER) != null) {
+        if (blenderContext.getMarkerValue(ArmatureHelper.ARMATURE_NODE_MARKER, spatial) != null) {
             this.skeleton = blenderContext.getSkeleton(featureOMA);
 
             Node nodeWithAnimationControl = blenderContext.getControlledNode(skeleton);
@@ -135,7 +136,7 @@ public class SimulationNode {
             animations = blenderContext.getAnimData(featureOMA) == null ? null : blenderContext.getAnimData(featureOMA).anims;
             for (Spatial child : spatial.getChildren()) {
                 if (child instanceof Node) {
-                    children.add(new SimulationNode((Long) child.getUserData("oma"), blenderContext, false));
+                    children.add(new SimulationNode((Long) blenderContext.getMarkerValue(ObjectHelper.OMA_MARKER, child), blenderContext, false));
                 }
             }
         }
@@ -199,7 +200,7 @@ public class SimulationNode {
             boolean applyStaticConstraints = true;
             if (animations != null) {
                 for (Animation animation : animations) {
-                    float[] animationTimeBoundaries = computeAnimationTimeBoundaries(animation);
+                    float[] animationTimeBoundaries = this.computeAnimationTimeBoundaries(animation);
                     int maxFrame = (int) animationTimeBoundaries[0];
                     float maxTime = animationTimeBoundaries[1];
 

engine/src/blender/com/jme3/scene/plugins/blender/objects/ObjectHelper.java

@@ -84,6 +84,8 @@ public class ObjectHelper extends AbstractBlenderHelper {
     protected static final int  OBJECT_TYPE_LATTICE  = 22;
     protected static final int  OBJECT_TYPE_ARMATURE = 25;
     
+    public static final String OMA_MARKER = "oma";
+
     /**
      * This constructor parses the given blender version and stores the result.
      * Some functionalities may differ in different blender versions.
@@ -214,7 +216,7 @@ public class ObjectHelper extends AbstractBlenderHelper {
                     // parent-children relationships between nodes
                     Node armature = new Node(name);
                     armature.setLocalTransform(t);
-                    armature.setUserData(ArmatureHelper.ARMATURE_NODE_MARKER, Boolean.TRUE);
+                    blenderContext.addMarker(ArmatureHelper.ARMATURE_NODE_MARKER, armature, Boolean.TRUE);
 
                     if (parent instanceof Node) {
                         ((Node) parent).attachChild(armature);
@@ -233,9 +235,7 @@ public class ObjectHelper extends AbstractBlenderHelper {
             result.updateModelBound();
             
             blenderContext.addLoadedFeatures(objectStructure.getOldMemoryAddress(), name, objectStructure, result);
-            // TODO: this data is only to help during loading, shall I remove it
-            // after all the loading is done ???
-            result.setUserData("oma", objectStructure.getOldMemoryAddress());
+            blenderContext.addMarker(OMA_MARKER, result, objectStructure.getOldMemoryAddress());
 
             // applying modifiers
             LOGGER.log(Level.FINE, "Reading and applying object's modifiers.");