Examples of TransformGroup

com.xith3d.scenegraph.TransformGroup
javax.media.j3d.TransformGroup
Group node that contains a transform. The TransformGroup node specifies a single spatial transformation, via a Transform3D object, that can position, orient, and scale all of its children.
The specified transformation must be affine. Further, if the TransformGroup node is used as an ancestor of a ViewPlatform node in the scene graph, the transformation must be congruent-only rotations, translations, and uniform scales are allowed in a direct path from a Locale to a ViewPlatform node.
Note: Even though arbitrary affine transformations are allowed, better performance will result if all matrices within a branch graph are congruent, containing only rotations translation, and uniform scale.
The effects of transformations in the scene graph are cumulative. The concatenation of the transformations of each TransformGroup in a direct path from the Locale to a Leaf node defines a composite model transformation (CMT) that takes points in that Leaf node's local coordinates and transforms them into Virtual World (Vworld) coordinates. This composite transformation is used to transform points, normals, and distances into Vworld coordinates. Points are transformed by the CMT. Normals are transformed by the inverse-transpose of the CMT. Distances are transformed by the scale of the CMT. In the case of a transformation containing a nonuniform scale or shear, the maximum scale value in any direction is used. This ensures, for example, that a transformed bounding sphere, which is specified as a point and a radius, continues to enclose all objects that are also transformed using a nonuniform scale.

Examples of javax.media.j3d.TransformGroup

  /**
   * Sets the <code>model</code> displayed by this component. 
   * The model is shown at its default orientation and in a box of 1 unit wide.
   */
  public void setModel(BranchGroup model) {
    TransformGroup modelTransformGroup = (TransformGroup)this.sceneTree.getChild(0);
    modelTransformGroup.removeAllChildren();
    if (model != null) {
      model = (BranchGroup)ModelManager.getInstance().cloneNode(model);
      model.setCapability(BranchGroup.ALLOW_DETACH);
      setNodeCapabilities(model);
      
      if (model.numChildren() > 0) {
        BoundingBox bounds = null;
        try {
          bounds = ModelManager.getInstance().getBounds(model);
        } catch (IllegalArgumentException ex) {
          // Model is empty
        }
        if (bounds != null) {
          Point3d lower = new Point3d();
          bounds.getLower(lower);
          Point3d upper = new Point3d();
          bounds.getUpper(upper);
          
          // Translate model to center
          Transform3D translation = new Transform3D ();
          translation.setTranslation(
              new Vector3d(-lower.x - (upper.x - lower.x) / 2, 
                           -lower.y - (upper.y - lower.y) / 2, 
                           -lower.z - (upper.z - lower.z) / 2));
          // Scale model to make it fit in a 1.8 unit wide box
          Transform3D modelTransform = new Transform3D();
          modelTransform.setScale (1.8 / Math.max (Math.max (upper.x -lower.x, upper.y - lower.y), 
                                                   upper.z - lower.z));
          modelTransform.mul(translation);
          
          modelTransformGroup.setTransform(modelTransform);
          modelTransformGroup.addChild(model);
        }
      }
    }
  }

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Examples of javax.media.j3d.TransformGroup

      // Scale model to make it fit in a 1.8 unit wide box      
      Transform3D modelTransform = new Transform3D();
      modelTransform.setScale(1.8 / Math.max(Math.max((upper.x -lower.x), (upper.z - lower.z)), (upper.y - lower.y)));
      modelTransform.mul(rotationTransform);
      
      TransformGroup modelTransformGroup = (TransformGroup)this.sceneTree.getChild(0);
      modelTransformGroup.setTransform(modelTransform);
    }
  }

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Examples of javax.media.j3d.TransformGroup

      } else {
        modelTransform.setScale(1.8 / Math.max(Math.max((upper.x -lower.x), (upper.z - lower.z)), (upper.y - lower.y)));
      }
      modelTransform.mul(scaleTransform);
      
      TransformGroup modelTransformGroup = (TransformGroup)this.sceneTree.getChild(0);
      modelTransformGroup.setTransform(modelTransform);
    }
  }

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Examples of javax.media.j3d.TransformGroup

          this.polygonsPrimitives.clear();
          this.polygonsHoles.clear();
          this.vcount = null;
        } 
      } else if ("visual_scene".equals(name)) {
        TransformGroup visualSceneGroup = new TransformGroup();
        this.parentGroups.push(visualSceneGroup);
        this.visualScenes.put(attributes.getValue("id"), visualSceneGroup);
      } else if ("node".equals(name)) {
        TransformGroup nodeGroup = new TransformGroup();
        if (this.parentGroups.size() > 0) {
          // Add node to parent node only for children nodes
          this.parentGroups.peek().addChild(nodeGroup);
        }
        this.parentGroups.push(nodeGroup);

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Examples of javax.media.j3d.TransformGroup

    /**
     * Multiplies the transform at top of the transform groups stack by the 
     * given <code>transformMultiplier</code>.
     */
    private void mulTransformGroup(Transform3D transformMultiplier) {
      TransformGroup transformGroup = (TransformGroup)this.parentGroups.peek();
      Transform3D transform = new Transform3D();
      transformGroup.getTransform(transform);
      transform.mul(transformMultiplier);
      transformGroup.setTransform(transform);
    }

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Examples of javax.media.j3d.TransformGroup

          modelRotation [2][0], modelRotation [2][1], modelRotation [2][2]);
      modelTransform.setRotation(modelRotationMatrix);
    }
    modelTransform.mul(scaleOneTransform);
    
    return new TransformGroup(modelTransform);
  }

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Examples of javax.media.j3d.TransformGroup

   * Creates the piece node with its transform group and add it to the piece branch. 
   */
  private void createPieceOfFurnitureNode(final HomePieceOfFurniture piece, 
                                          final boolean ignoreDrawingMode, 
                                          final boolean waitModelAndTextureLoadingEnd) {
    final TransformGroup pieceTransformGroup = new TransformGroup();
    // Allow the change of the transformation that sets piece size and position
    pieceTransformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    pieceTransformGroup.setCapability(Group.ALLOW_CHILDREN_READ);
    pieceTransformGroup.setCapability(Group.ALLOW_CHILDREN_WRITE);
    pieceTransformGroup.setCapability(Group.ALLOW_CHILDREN_EXTEND);
    addChild(pieceTransformGroup);
    
    // While loading model use a temporary node that displays a white box  
    final BranchGroup waitBranch = new BranchGroup();
    waitBranch.setCapability(BranchGroup.ALLOW_DETACH);
    waitBranch.addChild(getModelBox(Color.WHITE));      
    // Allow appearance change on all children
    setModelCapabilities(waitBranch);
    
    pieceTransformGroup.addChild(waitBranch);
    
    // Set piece model initial location, orientation and size      
    updatePieceOfFurnitureTransform();
    
    // Load piece real 3D model
    Content model = piece.getModel();
    ModelManager.getInstance().loadModel(model, waitModelAndTextureLoadingEnd,
        new ModelManager.ModelObserver() {
          public void modelUpdated(BranchGroup modelRoot) {
            float [][] modelRotation = piece.getModelRotation();
            // Add piece model scene to a normalized transform group
            TransformGroup modelTransformGroup = 
                ModelManager.getInstance().getNormalizedTransformGroup(modelRoot, modelRotation, 1);
            updatePieceOfFurnitureModelNode(modelRoot, modelTransformGroup, ignoreDrawingMode, waitModelAndTextureLoadingEnd);            
          }
          
          public void modelError(Exception ex) {
            // In case of problem use a default red box
            updatePieceOfFurnitureModelNode(getModelBox(Color.RED), new TransformGroup(), ignoreDrawingMode, waitModelAndTextureLoadingEnd);            
          }
        });
  }

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Examples of javax.media.j3d.TransformGroup


  /**
   * Returns the node of the filled model.
   */
  private Node getFilledModelNode() {
    TransformGroup transformGroup = (TransformGroup)getChild(0);
    BranchGroup branchGroup = (BranchGroup)transformGroup.getChild(0);
    return branchGroup.getChild(0);
  }

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Examples of javax.media.j3d.TransformGroup


  /**
   * Returns the node of the outline model.
   */
  private Node getOutlineModelNode() {
    TransformGroup transformGroup = (TransformGroup)getChild(0);
    BranchGroup branchGroup = (BranchGroup)transformGroup.getChild(0);
    if (branchGroup.numChildren() > 1) {
      return branchGroup.getChild(1);
    } else {
      return null;
    }

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Examples of javax.media.j3d.TransformGroup

      modelBranch.addChild(createOutlineModelNode(normalization));
    }


    setModelCapabilities(modelBranch);


    TransformGroup transformGroup = (TransformGroup)getChild(0);
    // Remove previous nodes    
    transformGroup.removeAllChildren();
    // Add model branch to live scene
    transformGroup.addChild(modelBranch);
    
    // Update piece color, visibility and model mirror in dispatch thread as
    // these attributes may be changed in that thread
    updatePieceOfFurnitureColorAndTexture(waitTextureLoadingEnd);      
    updatePieceOfFurnitureVisibility();

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