Package com.jme3.scene.plugins.blender.constraints

Examples of com.jme3.scene.plugins.blender.constraints.ConstraintHelper

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     * @param obj the path to the object.
     **/
    public Node loadNode(String obj){
  Node node = new Node();
  try{
            Spatial spatial = assetManager.loadModel(obj);
            //Material mat = new Material(assetManager, "Common/MatDefs/Misc/ShowNormals.j3md");
            //spatial.setMaterial(mat);
            node.attachChild(spatial);

      node.setModelBound(new BoundingSphere());
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        app.start();
    }

    @Override
    public void simpleInitApp() {
        Spatial teapot = assetManager.loadModel("Models/Teapot/Teapot.obj");
      
        teapot.setLocalScale(2f);
        Material mat = new Material(assetManager, "Common/MatDefs/Light/Lighting.j3md");
        mat.setFloat("m_Shininess", 32f);
        mat.setBoolean("m_UseMaterialColors", true);

        mat.setColor("m_Ambient",  ColorRGBA.Black);
        mat.setColor("m_Diffuse",  ColorRGBA.Green);
        mat.setColor("m_Specular", ColorRGBA.Red);
       
        teapot.setMaterial(mat);
        rootNode.attachChild(teapot);

        lightMdl = new Geometry("Light", new Sphere(10, 10, 0.1f));
        lightMdl.setMaterial(assetManager.loadMaterial("Common/Materials/RedColor.j3m"));
        lightMdl.getMesh().setStatic();
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        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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    }
   
    @Override
    public void bake(Space ownerSpace, Space targetSpace, Transform targetTransform, float influence) {
        if (needToCompute && influence != 0) {
            ConstraintHelper constraintHelper = blenderContext.getHelper(ConstraintHelper.class);
            BoneContext[] boneContexts = this.getBones();
            float b = chainLength;
            Quaternion boneWorldRotation = new Quaternion();

            for (int i = 0; i < boneContexts.length; ++i) {
                Bone bone = boneContexts[i].getBone();

                bone.updateWorldVectors();
                Transform boneWorldTransform = constraintHelper.getTransform(boneContexts[i].getArmatureObjectOMA(), bone.getName(), Space.CONSTRAINT_SPACE_WORLD);

                Vector3f head = boneWorldTransform.getTranslation();
                Vector3f tail = head.add(bone.getModelSpaceRotation().mult(Vector3f.UNIT_Y.mult(boneContexts[i].getLength())));

                Vector3f vectorA = tail.subtract(head);
                float a = vectorA.length();
                vectorA.normalizeLocal();

                Vector3f vectorC = targetTransform.getTranslation().subtract(head);
                float c = vectorC.length();
                vectorC.normalizeLocal();

                b -= a;
                float theta = 0;

                if (c >= a + b) {
                    theta = vectorA.angleBetween(vectorC);
                } else if (c <= FastMath.abs(a - b) && i < boneContexts.length - 1) {
                    theta = vectorA.angleBetween(vectorC) - FastMath.HALF_PI;
                } else {
                    theta = vectorA.angleBetween(vectorC) - FastMath.acos(-(b * b - a * a - c * c) / (2 * a * c));
                }
               
                theta *= influence;

                if (theta != 0) {
                    Vector3f vectorR = vectorA.cross(vectorC);
                    boneWorldRotation.fromAngleAxis(theta, vectorR);
                    boneWorldTransform.getRotation().multLocal(boneWorldRotation);
                    constraintHelper.applyTransform(boneContexts[i].getArmatureObjectOMA(), bone.getName(), Space.CONSTRAINT_SPACE_WORLD, boneWorldTransform);
                }

                bone.updateWorldVectors();
                alteredOmas.add(boneContexts[i].getBoneOma());
            }
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    @Override
    public void bake(Space ownerSpace, Space targetSpace, Transform targetTransform, float influence) {
        Object target = this.getTarget();// Bone or Node
        Object owner = this.getOwner();// Bone or Node
        if (!target.getClass().equals(owner.getClass())) {
            ConstraintHelper constraintHelper = blenderContext.getHelper(ConstraintHelper.class);

            TempVars tempVars = TempVars.get();
            Matrix4f m = constraintHelper.toMatrix(targetTransform, tempVars.tempMat4);
            tempVars.tempMat42.set(BoneContext.BONE_ARMATURE_TRANSFORMATION_MATRIX);
            if (target instanceof Bone) {
                tempVars.tempMat42.invertLocal();
            }
            m = m.multLocal(tempVars.tempMat42);
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                    }
                }
            }

            // bake constraints after everything is loaded
            ConstraintHelper constraintHelper = blenderContext.getHelper(ConstraintHelper.class);
            constraintHelper.bakeConstraints(blenderContext);

            // attach the nodes to the root node at the very end so that the root objects have no parents during constraint applying
            LOGGER.fine("Creating the root node of the model and applying loaded nodes of the scene to it.");
            Node modelRoot = new Node(blenderKey.getName());
            for (Node node : rootObjects) {
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            LOGGER.fine("Applying animations to the object if such are defined.");
            AnimationHelper animationHelper = blenderContext.getHelper(AnimationHelper.class);
            animationHelper.applyAnimations(result, blenderContext.getBlenderKey().getNodeAnimationNames(name));

            LOGGER.fine("Loading constraints connected with this object.");
            ConstraintHelper constraintHelper = blenderContext.getHelper(ConstraintHelper.class);
            constraintHelper.loadConstraints(objectStructure, blenderContext);

            LOGGER.fine("Loading custom properties.");
            if (blenderContext.getBlenderKey().isLoadObjectProperties()) {
                Properties properties = this.loadProperties(objectStructure, blenderContext);
                // the loaded property is a group property, so we need to get
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                        break;
                }
            }

            // bake constraints after everything is loaded
            ConstraintHelper constraintHelper = blenderContext.getHelper(ConstraintHelper.class);
            constraintHelper.bakeConstraints(blenderContext);

            // load the scene at the very end so that the root nodes have no parent during loading or constraints applying
            for (FileBlockHeader sceneBlock : sceneBlocks) {
                loadingResults.addScene(this.toScene(sceneBlock.getStructure(blenderContext)));
            }
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        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));
        blenderContext.putHelper(ConstraintHelper.class, new ConstraintHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(ParticlesHelper.class, new ParticlesHelper(inputStream.getVersionNumber(), blenderContext));
        blenderContext.putHelper(LandscapeHelper.class, new LandscapeHelper(inputStream.getVersionNumber(), blenderContext));
       
        // reading the blocks (dna block is automatically saved in the blender context when found)
        FileBlockHeader sceneFileBlock = null;
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            // 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);

        // create the children
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Related Classes of com.jme3.scene.plugins.blender.constraints.ConstraintHelper

  • clj3D.Utilities
  • clj3D.Viewer
  • clj3D.Viewer$AppActionListener
  • com.jme3.animation.Bone
  • com.jme3.math.Matrix4f
  • com.jme3.math.Transform
  • com.jme3.scene.plugins.blender.animations.BoneContext
  • com.jme3.scene.plugins.blender.BlenderLoader
  • com.jme3.scene.Spatial
  • com.jme3.swingGui.JMEDesktop
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