Examples with PointMesh maspack.geometry.PointMesh used on opensource projects

Example 6 with PointMesh

use of maspack.geometry.PointMesh 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 7 with PointMesh

use of maspack.geometry.PointMesh in project artisynth_core by artisynth.

the class XyzbReader method readMesh.

public PointMesh readMesh(PointMesh mesh, InputStream in) throws IOException {
    BinaryInputStream bin = new BinaryInputStream(new BufferedInputStream(in));
    bin.setLittleEndian(myLittleEndian);
    if (mesh == null) {
        mesh = new PointMesh();
    }
    mesh.clear();
    ArrayList<Point3d> vtxs = new ArrayList<Point3d>();
    ArrayList<Vector3d> nrms = new ArrayList<Vector3d>();
    boolean done = false;
    int cnt = 0;
    while (!done) {
        try {
            double vx = bin.readFloat();
            double vy = bin.readFloat();
            double vz = bin.readFloat();
            double nx = bin.readFloat();
            double ny = bin.readFloat();
            double nz = bin.readFloat();
            if (cnt % mySkip == 0) {
                vtxs.add(new Point3d(vx, vy, vz));
                nrms.add(new Vector3d(nx, ny, nz));
            }
        } catch (EOFException e) {
            done = true;
        }
        cnt++;
    }
    bin.close();
    mesh.set(vtxs.toArray(new Point3d[0]), nrms.toArray(new Vector3d[0]));
    return mesh;
}