Examples of com.jme3.scene.plugins.blender.objects.ObjectHelper

Package com.jme3.scene.plugins.blender.objects

Examples of com.jme3.scene.plugins.blender.objects.ObjectHelper

com.jme3.scene.plugins.blender.objects.ObjectHelper
A class that is used in object calculations. @author Marcin Roguski (Kaelthas)


        try {
          // trows an Exception if lod is not supported
          modelGeom.setLodLevel(0);


          LodControl control = new LodControl();
          modelGeom.addControl(control);
        } catch (Exception e) {}
        assetLogger.modelFinished();
        camNode.detachAllChildren();
        camNode.attachChild(model);

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                case 2:// FITCURVE
                    Pointer pCurveOb = (Pointer) modifierStructure.getFieldValue("curve_ob");
                    float length = 0;
                    if (pCurveOb.isNotNull()) {
                        Structure curveStructure = pCurveOb.fetchData().get(0);
                        ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
                        Node curveObject = (Node) objectHelper.toObject(curveStructure, blenderContext);
                        Set<Number> referencesToCurveLengths = new HashSet<Number>(curveObject.getChildren().size());
                        for (Spatial spatial : curveObject.getChildren()) {
                            if (spatial instanceof Geometry) {
                                Mesh mesh = ((Geometry) spatial).getMesh();
                                if (mesh instanceof Curve) {

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            // adding object's offset
            float[] objectOffset = new float[] { 0.0f, 0.0f, 0.0f };
            Pointer pOffsetObject = (Pointer) modifierData.get("offsetob");
            if (pOffsetObject != null) {
                FileBlockHeader offsetObjectBlock = blenderContext.getFileBlock(pOffsetObject.getOldMemoryAddress());
                ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
                try {// we take the structure in case the object was not yet loaded
                    Structure offsetStructure = offsetObjectBlock.getStructure(blenderContext);
                    Vector3f translation = objectHelper.getTransformation(offsetStructure, blenderContext).getTranslation();
                    objectOffset[0] = translation.x;
                    objectOffset[1] = translation.y;
                    objectOffset[2] = translation.z;
                } catch (BlenderFileException e) {
                    LOGGER.log(Level.WARNING, "Problems in blender file structure! Object offset cannot be applied! The problem: {0}", e.getMessage());
                }
            }
    
            // getting start and end caps
            Node[] caps = new Node[] { null, null };
            Pointer[] pCaps = new Pointer[] { (Pointer) modifierData.get("startcap"), (Pointer) modifierData.get("endcap") };
            for (int i = 0; i < pCaps.length; ++i) {
                if (pCaps[i] != null) {
                    caps[i] = (Node) blenderContext.getLoadedFeature(pCaps[i].getOldMemoryAddress(), LoadedFeatureDataType.LOADED_FEATURE);
                    if (caps[i] != null) {
                        caps[i] = (Node) caps[i].clone();
                    } else {
                        FileBlockHeader capBlock = blenderContext.getFileBlock(pOffsetObject.getOldMemoryAddress());
                        try {// we take the structure in case the object was not yet loaded
                            Structure capStructure = capBlock.getStructure(blenderContext);
                            ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
                            caps[i] = (Node) objectHelper.toObject(capStructure, blenderContext);
                            if (caps[i] == null) {
                                LOGGER.log(Level.WARNING, "Cap object ''{0}'' couldn''t be loaded!", capStructure.getName());
                            }
                        } catch (BlenderFileException e) {
                            LOGGER.log(Level.WARNING, "Problems in blender file structure! Cap object cannot be applied! The problem: {0}", e.getMessage());

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            Vector3f mirrorPlaneCenter = new Vector3f();
            if (pMirrorObject.isNotNull()) {
                Structure objectStructure;
                try {
                    objectStructure = pMirrorObject.fetchData().get(0);
                    ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
                    Node object = (Node) objectHelper.toObject(objectStructure, blenderContext);
                    if (object != null) {
                        // compute the mirror object coordinates in node's local space
                        mirrorPlaneCenter = this.getWorldMatrix(node).invertLocal().mult(object.getWorldTranslation());
                    }
                } catch (BlenderFileException e) {

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            animationHelper.loadAnimations();
            
            for (FileBlockHeader block : blocks) {
                switch (block.getCode()) {
                    case FileBlockHeader.BLOCK_OB00:// Object
                        ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
                        Object object = objectHelper.toObject(block.getStructure(blenderContext), blenderContext);
                        if (object instanceof LightNode) {
                            loadingResults.addLight((LightNode) object);
                        } else if (object instanceof CameraNode) {
                            loadingResults.addCamera((CameraNode) object);
                        } else if (object instanceof Node) {

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     * @param structure
     *            structure of a scene
     * @return scene's node
     */
    private Node toScene(Structure structure) {
        ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
        Node result = new Node(structure.getName());
        try {
            List<Structure> base = ((Structure) structure.getFieldValue("base")).evaluateListBase();
            for (Structure b : base) {
                Pointer pObject = (Pointer) b.getFieldValue("object");
                if (pObject.isNotNull()) {
                    Structure objectStructure = pObject.fetchData().get(0);


                    Object object = objectHelper.toObject(objectStructure, blenderContext);
                    if (object instanceof LightNode) {
                        result.addLight(((LightNode) object).getLight());
                        result.attachChild((LightNode) object);
                    } else if (object instanceof Node) {
                        if (LOGGER.isLoggable(Level.FINE)) {

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        // creating helpers
        blenderContext.putHelper(AnimationHelper.class, new AnimationHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(TextureHelper.class, new TextureHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(MeshHelper.class, new MeshHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(ObjectHelper.class, new ObjectHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(CurvesHelper.class, new CurvesHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(LightHelper.class, new LightHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(CameraHelper.class, new CameraHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(ModifierHelper.class, new ModifierHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(MaterialHelper.class, new MaterialHelper(inputStream.getVersionNumber(), blenderContext));

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            BlenderKey blenderKey = blenderContext.getBlenderKey();
            List<Node> rootObjects = new ArrayList<Node>();
            for (FileBlockHeader block : blocks) {
                if (block.getCode() == FileBlockHeader.BLOCK_OB00) {
                    ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
                    Object object = objectHelper.toObject(block.getStructure(blenderContext), blenderContext);
                    if (object instanceof LightNode && (blenderKey.getFeaturesToLoad() & FeaturesToLoad.LIGHTS) != 0) {
                        rootObjects.add((LightNode) object);
                    } else if (object instanceof Node && (blenderKey.getFeaturesToLoad() & FeaturesToLoad.OBJECTS) != 0) {
                        LOGGER.log(Level.FINE, "{0}: {1}--> {2}", new Object[] { ((Node) object).getName(), ((Node) object).getLocalTranslation().toString(), ((Node) object).getParent() == null ? "null" : ((Node) object).getParent().getName() });
                        if (((Node) object).getParent() == null) {

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        this.boneStructure = boneStructure;
        this.armatureObjectOMA = armatureObjectOMA;
        boneName = boneStructure.getFieldValue("name").toString();
        flag = ((Number) boneStructure.getFieldValue("flag")).intValue();
        length = ((Number) boneStructure.getFieldValue("length")).floatValue();
        ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);


        // first get the bone matrix in its armature space
        globalBoneMatrix = objectHelper.getMatrix(boneStructure, "arm_mat", blenderContext.getBlenderKey().isFixUpAxis());
        if(blenderContext.getBlenderKey().isFixUpAxis()) {
            // then make sure it is rotated in a proper way to fit the jme bone transformation conventions
            globalBoneMatrix.multLocal(BONE_ARMATURE_TRANSFORMATION_MATRIX);
        }


        Spatial armature = (Spatial) objectHelper.toObject(blenderContext.getFileBlock(armatureObjectOMA).getStructure(blenderContext), blenderContext);
        ConstraintHelper constraintHelper = blenderContext.getHelper(ConstraintHelper.class);
        Matrix4f armatureWorldMatrix = constraintHelper.toMatrix(armature.getWorldTransform(), new Matrix4f());


        // and now compute the final bone matrix in world space
        globalBoneMatrix = armatureWorldMatrix.mult(globalBoneMatrix);

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        this.skeletonOwnerOma = skeletonOwnerOma;
        Long boneOMA = boneStructure.getOldMemoryAddress();
        bone = new Bone(boneName);
        bones.add(bone);
        blenderContext.addLoadedFeatures(boneOMA, boneName, boneStructure, bone);
        ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);


        Structure skeletonOwnerObjectStructure = (Structure) blenderContext.getLoadedFeature(skeletonOwnerOma, LoadedFeatureDataType.LOADED_STRUCTURE);
        // I could load 'imat' here, but apparently in some older blenders there were bugs or unfinished functionalities that stored ZERO matrix in imat field
        // loading 'obmat' and inverting it makes us avoid errors in such cases
        Matrix4f invertedObjectOwnerGlobalMatrix = objectHelper.getMatrix(skeletonOwnerObjectStructure, "obmat", blenderContext.getBlenderKey().isFixUpAxis()).invertLocal();
        if (objectHelper.isParent(skeletonOwnerOma, armatureObjectOMA)) {
            boneMatrixInModelSpace = globalBoneMatrix.mult(invertedObjectOwnerGlobalMatrix);
        } else {
            boneMatrixInModelSpace = invertedObjectOwnerGlobalMatrix.mult(globalBoneMatrix);
        }

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