Optimizer.java 文件源码

private void optimizeTexCoords() {
        int total = 0, duplicates = 0, check = 0;

        Map<Point2D, Integer> pp = new HashMap<>();
        ObservableIntegerArray reindex = FXCollections.observableIntegerArray();
        ObservableFloatArray newTexCoords = FXCollections.observableFloatArray();

        for (MeshView meshView : meshViews) {
            TriangleMesh mesh = (TriangleMesh) meshView.getMesh();
            ObservableFloatArray texcoords = mesh.getTexCoords();
            int texcoordElementSize = mesh.getTexCoordElementSize();
            int os = texcoords.size() / texcoordElementSize;

            pp.clear();
            newTexCoords.clear();
            newTexCoords.ensureCapacity(texcoords.size());
            reindex.clear();
            reindex.resize(os);

            for (int i = 0, oi = 0, ni = 0; i < texcoords.size(); i += texcoordElementSize, oi++) {
                float x = texcoords.get(i);
                float y = texcoords.get(i + 1);
                Point2D p = new Point2D(x, y);
                Integer index = pp.get(p);
                if (index == null) {
                    pp.put(p, ni);
                    reindex.set(oi, ni);
                    newTexCoords.addAll(x, y);
                    ni++;
                } else {
                    reindex.set(oi, index);
                }
            }

            int ns = newTexCoords.size() / texcoordElementSize;

            int d = os - ns;
            duplicates += d;
            total += os;

            texcoords.setAll(newTexCoords);
            texcoords.trimToSize();

            ObservableIntegerArray faces = mesh.getFaces();
            for (int i = 1; i < faces.size(); i += 2) {
                faces.set(i, reindex.get(faces.get(i)));
            }

//            System.out.printf("There are %d (%.2f%%) duplicate texcoords out of %d total for mesh '%s'.\n",
//                    d, 100d * d / os, os, meshView.getId());

            check += mesh.getTexCoords().size() / texcoordElementSize;
        }
        System.out.printf("There are %d (%.2f%%) duplicate texcoords out of %d total.\n",
                duplicates, 100d * duplicates / total, total);
        System.out.printf("Now we have %d texcoords.\n", check);
    }