Examples with ReaderTokenizer maspack.util.ReaderTokenizer used on opensource projects

Example 41 with ReaderTokenizer

use of maspack.util.ReaderTokenizer in project artisynth_core by artisynth.

the class SimpleFemReader method read.

public FemModel3d read(FemModel3d fem, String fileName, Vector3d scale) throws IOException {
    try {
        ReaderTokenizer rtok = new ReaderTokenizer(new FileReader(fileName));
        fem = read(fem, rtok, scale);
        rtok.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return fem;
}

Example 42 with ReaderTokenizer

use of maspack.util.ReaderTokenizer in project artisynth_core by artisynth.

the class TetGenReader method read.

public static FemModel3d read(FemModel3d model, double density, Vector3d scale, Reader nodeReader, Reader elemReader) throws IOException {
    if (model == null) {
        model = new FemModel3d();
    }
    ReaderTokenizer nodeFile = new ReaderTokenizer(new BufferedReader(nodeReader));
    model.setDensity(density);
    nodeFile.nextToken();
    nodeFile.nextToken();
    nodeFile.nextToken();
    nodeFile.nextToken();
    while (nodeFile.nextToken() != ReaderTokenizer.TT_EOF) {
        if (!nodeFile.tokenIsInteger()) {
            throw new IOException("Expecting node index, got " + nodeFile);
        }
        // int index = (int)nodeFile.lval;
        Point3d coords = new Point3d();
        for (int i = 0; i < 3; i++) {
            coords.set(i, nodeFile.scanNumber());
        }
        // System.out.println(coords);
        if (scale != null) {
            coords.x *= scale.x;
            coords.y *= scale.y;
            coords.z *= scale.z;
        }
        model.addNode(new FemNode3d(coords));
    }
    ReaderTokenizer elemFile = new ReaderTokenizer(new BufferedReader(elemReader));
    elemFile.nextToken();
    elemFile.nextToken();
    elemFile.nextToken();
    int indexBase = -1;
    while (elemFile.nextToken() != ReaderTokenizer.TT_EOF) {
        if (!elemFile.tokenIsInteger()) {
            throw new IOException("Expecting element index, got " + elemFile);
        }
        if (indexBase == -1) {
            indexBase = (elemFile.nval == 1.0 ? 1 : 0);
        }
        // int index = (int)elemFile.lval;
        int[] idxs = new int[4];
        for (int i = 0; i < 4; i++) {
            idxs[i] = elemFile.scanInteger() - indexBase;
        // System.out.print(idxs[i] + " ");
        }
        // System.out.println();
        FemNode3d n0 = model.getNode(idxs[0]);
        FemNode3d n1 = model.getNode(idxs[1]);
        FemNode3d n2 = model.getNode(idxs[2]);
        FemNode3d n3 = model.getNode(idxs[3]);
        // check to make sure that the tet is defined so that the
        // first three nodes are arranged clockwise about their face
        TetElement tet;
        if (TetElement.computeVolume(n0, n1, n2, n3) >= 0) {
            tet = new TetElement(n0, n1, n2, n3);
        } else {
            tet = new TetElement(n0, n2, n1, n3);
        }
        model.addElement(tet);
    }
    return model;
}

Example 43 with ReaderTokenizer

use of maspack.util.ReaderTokenizer in project artisynth_core by artisynth.

the class PlyReader method readMesh.

public MeshBase readMesh(MeshBase mesh) throws IOException {
    DataInputStream is = new DataInputStream(myIstream);
    parseHeader(is);
    ArrayList<Point3d> verts = new ArrayList<Point3d>();
    ArrayList<Vector3d> nrmls = new ArrayList<Vector3d>();
    ArrayList<int[]> faces = new ArrayList<int[]>();
    if (myDataFormat == DataFormat.ASCII) {
        ReaderTokenizer rtok = new ReaderTokenizer(new BufferedReader(new InputStreamReader(myIstream)));
        readVertexInfo(rtok, verts, nrmls);
        readFaceInfo(rtok, faces);
    } else {
        BinaryInputStream bis = new BinaryInputStream(new BufferedInputStream(myIstream));
        if (myDataFormat == DataFormat.BINARY_LITTLE_ENDIAN) {
            bis.setLittleEndian(true);
        }
        readVertexInfo(bis, verts, nrmls);
        readFaceInfo(bis, faces);
    }
    if (mesh == null) {
        if (myNumFaces == 0) {
            mesh = new PointMesh();
        } else {
            mesh = new PolygonalMesh();
        }
    }
    if (mesh instanceof PolygonalMesh) {
        PolygonalMesh pmesh = (PolygonalMesh) mesh;
        int icnt = 0;
        for (Point3d pnt : verts) {
            pmesh.addVertex(pnt);
        }
        for (int[] idxs : faces) {
            pmesh.addFace(idxs);
            icnt += idxs.length;
        }
        if (nrmls.size() > 0) {
            // we have to assume here the there is one normal per vertex,
            // and assign the normal indices accordingly]
            int k = 0;
            int[] normalIndices = new int[icnt];
            for (int i = 0; i < faces.size(); i++) {
                int[] idxs = pmesh.getFaces().get(i).getVertexIndices();
                for (int j = 0; j < idxs.length; j++) {
                    normalIndices[k++] = idxs[j];
                }
            }
            pmesh.setNormals(nrmls, normalIndices);
            pmesh.setHardEdgesFromNormals();
        }
    } else if (mesh instanceof PointMesh) {
        PointMesh pmesh = (PointMesh) mesh;
        pmesh.set(verts.toArray(new Point3d[0]), nrmls.toArray(new Vector3d[0]));
    } else {
        throw new UnsupportedOperationException("Mesh type " + mesh.getClass() + " not supported by this reader");
    }
    return mesh;
}

Example 44 with ReaderTokenizer

use of maspack.util.ReaderTokenizer in project artisynth_core by artisynth.

the class VtkAsciiReader method read.

public static PolygonalMesh read(PolygonalMesh mesh, Reader reader, double tol) throws IOException {
    ReaderTokenizer rtok = new ReaderTokenizer(reader);
    ArrayList<Point3d> nodeList = new ArrayList<Point3d>();
    ArrayList<ArrayList<Integer>> faceList = new ArrayList<ArrayList<Integer>>();
    rtok.eolIsSignificant(false);
    // read until we find a dataset
    while (rtok.nextToken() != ReaderTokenizer.TT_EOF) {
        if (rtok.ttype == ReaderTokenizer.TT_WORD) {
            if (rtok.sval.equalsIgnoreCase("DATASET")) {
                rtok.nextToken();
                String dataType = rtok.sval;
                if (dataType.equalsIgnoreCase("POLYDATA")) {
                    parsePolyData(rtok, nodeList, faceList);
                    return buildMesh(mesh, nodeList, faceList);
                } else {
                    System.err.println("Error: unknown dataset type '" + dataType + "'");
                }
            }
        }
    }
    return null;
}