Java Examples for org.j3d.renderer.java3d.loaders.STLLoader

/**
     * Actually load the stl file and set its attributes
     * @param location
     * @param att
     * @return
     */
private BranchGroup loadSingleSTL(String location, Attributes att) {
    BranchGroup result = null;
    STLLoader loader = new STLLoader();
    Scene scene;
    try {
        scene = loader.load(location);
        if (scene != null) {
            result = scene.getSceneGroup();
            result.setCapability(Node.ALLOW_BOUNDS_READ);
            result.setCapability(Group.ALLOW_CHILDREN_READ);
            att.setPart(result);
            result.setUserData(att);
            stl.addChild(result);
            // Recursively add its attribute
            Hashtable namedObjects = scene.getNamedObjects();
            java.util.Enumeration enumValues = namedObjects.elements();
            if (enumValues != null) {
                while (enumValues.hasMoreElements()) {
                    Shape3D value = (Shape3D) enumValues.nextElement();
                    bbox = (BoundingBox) value.getBounds();
                    value.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
                    GeometryArray g = (GeometryArray) value.getGeometry();
                    g.setCapability(GeometryArray.ALLOW_COORDINATE_WRITE);
                    recursiveSetUserData(value, att);
                }
            }
        }
    } catch (Exception e) {
        System.err.println("loadSingelSTL(): Exception loading STL file from: " + location);
        e.printStackTrace();
    }
    return result;
}

/**
     * Actually load the stl file and set its attributes.  Offset decides where to put it relative to 
     * the origin.  If lastPicked is null, the file is loaded as a new independent STLObject; if not
     * it is added to lastPicked and subsequently is subjected to all the same transforms, so they retain
     * their relative positions.  This is how multi-material objects are loaded.
     * 
     * @param location
     * @param att
     * @param offset
     * @param lastPicked
     * @return
     */
private Contents loadSingleSTL(String location, Attributes att, Vector3d offset, STLObject lastPicked) {
    BranchGroup bgResult = null;
    CSG3D csgResult = null;
    STLLoader loader = new STLLoader();
    //StlFile loader = new StlFile();
    Scene scene;
    double volume = 0;
    try {
        //location=location.substring(5);
        //System.out.println(location);
        scene = loader.load(location);
        CSGReader csgr = new CSGReader(location);
        if (csgr.csgAvailable())
            csgResult = csgr.csg();
        if (scene != null) {
            bgResult = scene.getSceneGroup();
            bgResult.setCapability(Node.ALLOW_BOUNDS_READ);
            bgResult.setCapability(Group.ALLOW_CHILDREN_READ);
            bgResult.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
            // Recursively add its attribute
            Hashtable<?, ?> namedObjects = scene.getNamedObjects();
            java.util.Enumeration<?> enumValues = namedObjects.elements();
            if (enumValues != null) {
                while (enumValues.hasMoreElements()) {
                    Object tt = enumValues.nextElement();
                    if (tt instanceof Shape3D) {
                        Shape3D value = (Shape3D) tt;
                        volume += s3dVolume(value);
                        bbox = (BoundingBox) value.getBounds();
                        value.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
                        GeometryArray g = (GeometryArray) value.getGeometry();
                        g.setCapability(GeometryArray.ALLOW_COORDINATE_WRITE);
                        recursiveSetUserData(value, att);
                    }
                }
            }
            att.setPart(bgResult);
            bgResult.setUserData(att);
            Offsets off;
            if (lastPicked != null) {
                // Add this object to lastPicked
                csgResult = setOffset(bgResult, csgResult, lastPicked.rootOffset);
                lastPicked.stl.addChild(bgResult);
                lastPicked.setAppearance(lastPicked.getAppearance());
                lastPicked.updateBox(bbox);
            } else {
                // New independent object.
                stl.addChild(bgResult);
                off = getOffsets(bgResult, offset);
                rootOffset = off.centreToOrigin;
                csgResult = setOffset(stl, csgResult, rootOffset);
                Transform3D temp_t = new Transform3D();
                temp_t.set(off.bottomLeftShift);
                trans.setTransform(temp_t);
                restoreAppearance();
            }
        }
    } catch (Exception e) {
        Debug.e("loadSingelSTL(): Exception loading STL file from: " + location);
        e.printStackTrace();
    }
    return new Contents(location, bgResult, csgResult, att, volume);
}