Examples with Face org.twak.utils.geom.ObjDump.Face used on opensource projects

Example 1 with Face

use of org.twak.utils.geom.ObjDump.Face in project chordatlas by twak.

the class MiniGen method clip.

public void clip(Loop<Point3d> in, File objLocation) {
    ObjDump obj = new ObjDump();
    double[] bounds = Loopz.minMaxXZ(in);
    List<LinearForm3D> halfPlanes = new ArrayList();
    File writeFolder = objLocation.getParentFile();
    for (Pair<Point3d, Point3d> p : in.pairs()) {
        Vector3d norm = new Vector3d(p.second());
        norm.sub(p.first());
        norm = new Vector3d(-norm.z, 0, norm.x);
        norm.normalize();
        halfPlanes.add(new LinearForm3D(norm, p.first()));
    }
    Map<File, File> copied = new HashMap<>();
    int nameCount = 0;
    double minY = Double.MAX_VALUE, maxY = -Double.MAX_VALUE;
    for (Map.Entry<Integer, Matrix4d> e : trans.index.entrySet()) {
        if (!inBounds(e.getValue(), Collections.singletonList(bounds)))
            continue;
        else {
            Matrix4d m = new Matrix4d();
            m.mul(Jme3z.fromMatrix(trans.offset), e.getValue());
            File readFolder = new File(Tweed.toWorkspace(root), e.getKey() + "");
            ObjDump or = new ObjDump(new File(readFolder, "model.obj"));
            or.computeMissingNormals();
            for (ObjDump.Material mat : or.material2Face.keySet()) {
                f: for (Face f : or.material2Face.get(mat)) {
                    for (int j = 0; j < f.vtIndexes.size(); j++) {
                        Point3d pt = new Point3d(or.orderVert.get(f.vtIndexes.get(j)));
                        m.transform(pt);
                        if (pt.x > bounds[0] && pt.x < bounds[1] && pt.z > bounds[2] && pt.z < bounds[3])
                            if (inside(pt, halfPlanes)) {
                                if (IMPORT_TEXTURES && !((obj.currentMaterial != null && obj.currentMaterial.equals(mat)) || (obj.currentMaterial == null && mat == null))) {
                                    File source = new File(readFolder, mat.filename);
                                    ObjDump.Material newMat;
                                    if (copied.containsKey(source)) {
                                        newMat = new ObjDump.Material(mat);
                                        newMat.filename = copied.get(source).getName();
                                    } else {
                                        newMat = makeUnique(mat, writeFolder);
                                        File destFile = new File(writeFolder, newMat.filename);
                                        copied.put(source, destFile);
                                        try {
                                            Files.copy(source.toPath(), new FileOutputStream(destFile));
                                        } catch (IOException e1) {
                                            e1.printStackTrace();
                                        }
                                    }
                                    newMat.diffuse = new double[] { 0, 0, 0 };
                                    newMat.ambient = new double[] { 1, 1, 1 };
                                    newMat.specular = new double[] { 0, 0, 0 };
                                    newMat.name = "mat_" + (nameCount++);
                                    obj.setCurrentMaterial(newMat);
                                }
                                List<Point3d> fVerts = new ArrayList<>(3), fNorms = new ArrayList<>(3);
                                List<Point2d> fUVs = new ArrayList<>(2);
                                for (int i = 0; i < f.vtIndexes.size(); i++) {
                                    Point3d vts = new Point3d(or.orderVert.get(f.vtIndexes.get(i)));
                                    Point3d ns = new Point3d(or.orderNorm.get(f.normIndexes.get(i)));
                                    ns.add(vts);
                                    m.transform(vts);
                                    m.transform(ns);
                                    ns.sub(vts);
                                    minY = Math.min(vts.y, minY);
                                    maxY = Math.max(vts.y, maxY);
                                    fVerts.add(vts);
                                    fNorms.add(ns);
                                    fUVs.add(new Point2d(or.orderUV.get(f.uvIndexes.get(i))));
                                }
                                obj.addFace(fVerts, fNorms, fUVs);
                                continue f;
                            }
                    }
                }
            }
        }
    }
    for (Tuple3d t : obj.orderVert) t.y -= (maxY - minY) * 0.03 + minY;
    obj.dump(objLocation);
}

Example 2 with Face

use of org.twak.utils.geom.ObjDump.Face in project chordatlas by twak.

the class MiniTransform method convertToMini.

public static void convertToMini(Iterable<File> bigObj, File outfile, Matrix4d transform) {
    outfile.mkdirs();
    // .iterator().next() );
    ObjDump src = new ObjDump(bigObj);
    src.centerVerts();
    src.transform(transform);
    long count = src.material2Face.entrySet().stream().mapToInt(x -> x.getValue().size()).sum();
    double[] bounds = src.orderVert.stream().collect(new InaxPoint3dCollector());
    long targetCount = 5000;
    double volume = (bounds[1] - bounds[0]) * (bounds[3] - bounds[2]) * (bounds[5] - bounds[4]);
    double edgeLength = Math.pow(volume / (count / targetCount), 0.3333);
    int xc = (int) Math.ceil((bounds[1] - bounds[0]) / edgeLength), yc = (int) Math.ceil((bounds[3] - bounds[2]) / edgeLength), zc = (int) Math.ceil((bounds[5] - bounds[4]) / edgeLength);
    Set<Face>[][][] faces = new Set[xc][yc][zc];
    for (Entry<Material, List<Face>> e : src.material2Face.entrySet()) for (Face f : e.getValue()) {
        Tuple3d vt = src.orderVert.get(f.vtIndexes.get(0));
        int ix = (int) ((vt.x - bounds[0]) / edgeLength);
        int iy = (int) ((vt.y - bounds[2]) / edgeLength);
        int iz = (int) ((vt.z - bounds[4]) / edgeLength);
        if (faces[ix][iy][iz] == null)
            faces[ix][iy][iz] = new HashSet();
        faces[ix][iy][iz].add(f);
    }
    int dir = 0;
    MiniTransform mt = new MiniTransform();
    for (int x = 0; x < xc; x++) for (int y = 0; y < yc; y++) for (int z = 0; z < zc; z++) {
        Set<Face> miniF = faces[x][y][z];
        if (miniF == null)
            continue;
        Matrix4d trans = new Matrix4d();
        trans.setIdentity();
        trans.setScale(edgeLength / 255);
        trans.setTranslation(new Vector3d(x * edgeLength + bounds[0], y * edgeLength + bounds[2], z * edgeLength + bounds[4]));
        Matrix4d pack = new Matrix4d(trans);
        pack.invert();
        ObjDump mini = new ObjDump();
        miniF.stream().forEach(f -> mini.addFaceFrom(f, src));
        mini.transform(pack);
        mini.dump(new File(new File(outfile, "" + dir), OBJ));
        mt.index.put(dir, trans);
        dir++;
    }
    try {
        new XStream().toXML(mt, new FileWriter(new File(outfile, INDEX)));
    } catch (IOException e1) {
        e1.printStackTrace();
    }
    System.out.println("wrote " + count + " faces to " + dir + " meshes");
}