Examples with SerializerException org.bimserver.plugins.serializers.SerializerException used on opensource projects

Example 6 with SerializerException

use of org.bimserver.plugins.serializers.SerializerException in project GltfSerializers by opensourceBIM.

the class BinaryGltfSerializer method addNormalsAccessor.

private String addNormalsAccessor(IfcProduct ifcProduct, String bufferViewName, int byteOffset, int count) throws SerializerException {
    if (count <= 0) {
        throw new SerializerException("Count <= 0");
    }
    String accessorName = "accessor_normal_" + (accessorCounter++);
    ObjectNode accessor = OBJECT_MAPPER.createObjectNode();
    accessor.put("bufferView", bufferViewName);
    accessor.put("byteOffset", byteOffset);
    accessor.put("byteStride", 12);
    accessor.put("componentType", FLOAT);
    accessor.put("count", count);
    accessor.put("type", "VEC3");
    ArrayNode min = OBJECT_MAPPER.createArrayNode();
    min.add(-1d);
    min.add(-1d);
    min.add(-1d);
    ArrayNode max = OBJECT_MAPPER.createArrayNode();
    max.add(1);
    max.add(1);
    max.add(1);
    accessor.set("min", min);
    accessor.set("max", max);
    accessors.set(accessorName, accessor);
    return accessorName;
}

Example 7 with SerializerException

use of org.bimserver.plugins.serializers.SerializerException in project GltfSerializers by opensourceBIM.

the class BinaryGltfSerializer method write.

@Override
protected boolean write(OutputStream outputStream, ProgressReporter progressReporter) throws SerializerException {
    gltfNode = OBJECT_MAPPER.createObjectNode();
    buffers = OBJECT_MAPPER.createObjectNode();
    meshes = OBJECT_MAPPER.createObjectNode();
    buffersViews = OBJECT_MAPPER.createObjectNode();
    scenesNode = OBJECT_MAPPER.createObjectNode();
    accessors = OBJECT_MAPPER.createObjectNode();
    nodes = OBJECT_MAPPER.createObjectNode();
    materials = OBJECT_MAPPER.createObjectNode();
    shaders = OBJECT_MAPPER.createObjectNode();
    gltfNode.set("meshes", meshes);
    gltfNode.set("bufferViews", buffersViews);
    gltfNode.set("scenes", scenesNode);
    gltfNode.set("accessors", accessors);
    gltfNode.set("nodes", nodes);
    gltfNode.set("buffers", buffers);
    gltfNode.set("materials", materials);
    gltfNode.set("shaders", shaders);
    createVertexColorMaterial();
    try {
        LittleEndianDataOutputStream dataOutputStream = new LittleEndianDataOutputStream(outputStream);
        generateSceneAndBody();
        // StringWriter stringWriter = new StringWriter();
        // OBJECT_MAPPER.writerWithDefaultPrettyPrinter().writeValue(stringWriter, gltfNode);
        // System.out.println(stringWriter);
        byte[] sceneBytes = gltfNode.toString().getBytes(Charsets.UTF_8);
        writeHeader(dataOutputStream, 20, sceneBytes.length, body.capacity());
        writeScene(dataOutputStream, sceneBytes);
        writeBody(dataOutputStream, body.array());
    } catch (IOException e) {
        throw new SerializerException(e);
    }
    return false;
}

Example 8 with SerializerException

use of org.bimserver.plugins.serializers.SerializerException in project GltfSerializers by opensourceBIM.

the class BinaryGltfSerializer2 method write.

@Override
protected boolean write(OutputStream outputStream, ProgressReporter progressReporter) throws SerializerException {
    gltfNode = OBJECT_MAPPER.createObjectNode();
    buffers = OBJECT_MAPPER.createArrayNode();
    meshes = OBJECT_MAPPER.createArrayNode();
    buffersViews = OBJECT_MAPPER.createArrayNode();
    scenesNode = OBJECT_MAPPER.createArrayNode();
    accessors = OBJECT_MAPPER.createArrayNode();
    nodes = OBJECT_MAPPER.createArrayNode();
    materials = OBJECT_MAPPER.createArrayNode();
    shaders = OBJECT_MAPPER.createObjectNode();
    gltfNode.set("meshes", meshes);
    gltfNode.set("bufferViews", buffersViews);
    gltfNode.set("scenes", scenesNode);
    gltfNode.set("accessors", accessors);
    gltfNode.set("nodes", nodes);
    gltfNode.set("buffers", buffers);
    gltfNode.set("materials", materials);
    // gltfNode.set("shaders", shaders);
    createVertexColorMaterial();
    try {
        LittleEndianDataOutputStream dataOutputStream = new LittleEndianDataOutputStream(outputStream);
        generateSceneAndBody();
        // StringWriter stringWriter = new StringWriter();
        // OBJECT_MAPPER.writerWithDefaultPrettyPrinter().writeValue(stringWriter, gltfNode);
        // System.out.println(stringWriter);
        byte[] sceneBytes = gltfNode.toString().getBytes(Charsets.UTF_8);
        writeHeader(dataOutputStream, 12, 8 + sceneBytes.length + (sceneBytes.length % 4 == 0 ? 0 : 4 - sceneBytes.length % 4), 8 + body.capacity() + (body.capacity() % 4 == 4 ? 0 : 4 - body.capacity() % 4));
        writeScene(dataOutputStream, sceneBytes);
        writeBody(dataOutputStream, body.array());
        dataOutputStream.flush();
    } catch (IOException e) {
        throw new SerializerException(e);
    }
    return false;
}

Example 9 with SerializerException

use of org.bimserver.plugins.serializers.SerializerException in project GltfSerializers by opensourceBIM.

the class BinaryGltfSerializer2 method addVerticesAccessor.

private int addVerticesAccessor(IfcProduct ifcProduct, int bufferViewIndex, int startPosition, int count) throws SerializerException {
    if (count <= 0) {
        throw new SerializerException("Count <= 0");
    }
    if (count * 12 == 9000) {
        System.out.println();
    }
    GeometryData data = ifcProduct.getGeometry().getData();
    ByteBuffer verticesBuffer = ByteBuffer.wrap(data.getVertices());
    ObjectNode accessor = OBJECT_MAPPER.createObjectNode();
    accessor.put("bufferView", bufferViewIndex);
    accessor.put("byteOffset", startPosition);
    // accessor.put("byteStride", 12);
    accessor.put("componentType", FLOAT);
    accessor.put("count", count);
    accessor.put("type", "VEC3");
    verticesBuffer.order(ByteOrder.LITTLE_ENDIAN);
    float[] min = { Float.MAX_VALUE, Float.MAX_VALUE, Float.MAX_VALUE };
    float[] max = { -Float.MAX_VALUE, -Float.MAX_VALUE, -Float.MAX_VALUE };
    for (int i = 0; i < verticesBuffer.capacity(); i += 12) {
        for (int j = 0; j < 3; j++) {
            float val = verticesBuffer.getFloat(i + (j * 4));
            if (val > max[j]) {
                max[j] = val;
            }
            if (val < min[j]) {
                min[j] = val;
            }
        }
    }
    ArrayNode minNode = OBJECT_MAPPER.createArrayNode();
    minNode.add(min[0]);
    minNode.add(min[1]);
    minNode.add(min[2]);
    ArrayNode maxNode = OBJECT_MAPPER.createArrayNode();
    maxNode.add(max[0]);
    maxNode.add(max[1]);
    maxNode.add(max[2]);
    accessor.set("min", minNode);
    accessor.set("max", maxNode);
    accessors.add(accessor);
    return accessors.size() - 1;
}

Example 10 with SerializerException

use of org.bimserver.plugins.serializers.SerializerException in project GltfSerializers by opensourceBIM.

the class BinaryGltfSerializer2 method generateSceneAndBody.

private void generateSceneAndBody() throws SerializerException {
    int totalBodyByteLength = 0;
    int totalIndicesByteLength = 0;
    int totalVerticesByteLength = 0;
    int totalNormalsByteLength = 0;
    int totalColorsByteLength = 0;
    int maxIndexValues = 16389;
    for (IfcProduct ifcProduct : model.getAllWithSubTypes(IfcProduct.class)) {
        GeometryInfo geometryInfo = ifcProduct.getGeometry();
        if (!ifcProduct.eClass().getName().equals("IfcOpeningElement") && geometryInfo != null && geometryInfo.getData().getVertices().length > 0) {
            GeometryData data = geometryInfo.getData();
            int nrIndicesBytes = data.getIndices().length;
            totalIndicesByteLength += nrIndicesBytes / 2;
            if (nrIndicesBytes > 4 * maxIndexValues) {
                int nrIndices = nrIndicesBytes / 4;
                totalVerticesByteLength += nrIndices * 3 * 4;
                totalNormalsByteLength += nrIndices * 3 * 4;
                if (data.getMaterials() != null) {
                    totalColorsByteLength += nrIndices * 4 * 4;
                }
            } else {
                totalVerticesByteLength += data.getVertices().length;
                totalNormalsByteLength += data.getNormals().length;
                if (data.getMaterials() != null) {
                    totalColorsByteLength += data.getMaterials().length;
                }
            }
        }
    }
    totalBodyByteLength = totalIndicesByteLength + totalVerticesByteLength + totalNormalsByteLength + totalColorsByteLength;
    body = ByteBuffer.allocate(totalBodyByteLength + materialColorFragmentShaderBytes.length + materialColorVertexShaderBytes.length + vertexColorFragmentShaderBytes.length + vertexColorVertexShaderBytes.length);
    body.order(ByteOrder.LITTLE_ENDIAN);
    ByteBuffer newIndicesBuffer = ByteBuffer.allocate(totalIndicesByteLength);
    newIndicesBuffer.order(ByteOrder.LITTLE_ENDIAN);
    ByteBuffer newVerticesBuffer = ByteBuffer.allocate(totalVerticesByteLength);
    newVerticesBuffer.order(ByteOrder.LITTLE_ENDIAN);
    ByteBuffer newNormalsBuffer = ByteBuffer.allocate(totalNormalsByteLength);
    newNormalsBuffer.order(ByteOrder.LITTLE_ENDIAN);
    ByteBuffer newColorsBuffer = ByteBuffer.allocate(totalColorsByteLength);
    newColorsBuffer.order(ByteOrder.LITTLE_ENDIAN);
    int indicesBufferView = createBufferView(totalIndicesByteLength, 0, ELEMENT_ARRAY_BUFFER, -1);
    int verticesBufferView = createBufferView(totalVerticesByteLength, totalIndicesByteLength, ARRAY_BUFFER, 12);
    int normalsBufferView = createBufferView(totalNormalsByteLength, totalIndicesByteLength + totalVerticesByteLength, ARRAY_BUFFER, 12);
    int colorsBufferView = -1;
    scenesNode.add(createDefaultScene());
    gltfNode.put("scene", 0);
    createModelNode();
    for (IfcProduct ifcProduct : model.getAllWithSubTypes(IfcProduct.class)) {
        GeometryInfo geometryInfo = ifcProduct.getGeometry();
        if (!ifcProduct.eClass().getName().equals("IfcOpeningElement") && geometryInfo != null) {
            ByteBuffer matrixByteBuffer = ByteBuffer.wrap(ifcProduct.getGeometry().getTransformation());
            matrixByteBuffer.order(ByteOrder.LITTLE_ENDIAN);
            DoubleBuffer doubleBuffer = matrixByteBuffer.asDoubleBuffer();
            float[] matrix = new float[16];
            for (int i = 0; i < doubleBuffer.capacity(); i++) {
                matrix[i] = (float) doubleBuffer.get();
            }
            updateExtends(geometryInfo, matrix);
        }
    }
    float[] offsets = getOffsets();
    // This will "normalize" the model by moving it's axis-aligned bounding box center to the 0-point. This will always be the wrong position, but at least the building will be close to the 0-point
    modelTranslation.add(-offsets[0]);
    modelTranslation.add(-offsets[1]);
    modelTranslation.add(-offsets[2]);
    for (IfcProduct ifcProduct : model.getAllWithSubTypes(IfcProduct.class)) {
        GeometryInfo geometryInfo = ifcProduct.getGeometry();
        if (!ifcProduct.eClass().getName().equals("IfcOpeningElement") && geometryInfo != null && geometryInfo.getData().getVertices().length > 0) {
            int startPositionIndices = newIndicesBuffer.position();
            int startPositionVertices = newVerticesBuffer.position();
            int startPositionNormals = newNormalsBuffer.position();
            int startPositionColors = newColorsBuffer.position();
            GeometryData data = geometryInfo.getData();
            ByteBuffer indicesBuffer = ByteBuffer.wrap(data.getIndices());
            indicesBuffer.order(ByteOrder.LITTLE_ENDIAN);
            IntBuffer indicesIntBuffer = indicesBuffer.asIntBuffer();
            ByteBuffer verticesBuffer = ByteBuffer.wrap(data.getVertices());
            verticesBuffer.order(ByteOrder.LITTLE_ENDIAN);
            FloatBuffer verticesFloatBuffer = verticesBuffer.asFloatBuffer();
            ByteBuffer normalsBuffer = ByteBuffer.wrap(data.getNormals());
            normalsBuffer.order(ByteOrder.LITTLE_ENDIAN);
            FloatBuffer normalsFloatBuffer = normalsBuffer.asFloatBuffer();
            FloatBuffer materialsFloatBuffer = null;
            if (data.getMaterials() != null) {
                ByteBuffer materialsBuffer = ByteBuffer.wrap(data.getMaterials());
                materialsBuffer.order(ByteOrder.LITTLE_ENDIAN);
                materialsFloatBuffer = materialsBuffer.asFloatBuffer();
            }
            if (data.getIndices().length > 4 * maxIndexValues) {
                int totalNrIndices = indicesIntBuffer.capacity();
                int nrParts = (totalNrIndices + maxIndexValues - 1) / maxIndexValues;
                ArrayNode primitivesNode = OBJECT_MAPPER.createArrayNode();
                for (int part = 0; part < nrParts; part++) {
                    startPositionIndices = newIndicesBuffer.position();
                    startPositionVertices = newVerticesBuffer.position();
                    startPositionNormals = newNormalsBuffer.position();
                    startPositionColors = newColorsBuffer.position();
                    short indexCounter = 0;
                    int upto = Math.min((part + 1) * maxIndexValues, totalNrIndices);
                    for (int i = part * maxIndexValues; i < upto; i++) {
                        newIndicesBuffer.putShort(indexCounter++);
                    }
                    int[] min = new int[] { 0 };
                    int[] max = new int[] { upto };
                    int nrVertices = upto - part * maxIndexValues;
                    for (int i = part * maxIndexValues; i < upto; i += 3) {
                        int oldIndex1 = indicesIntBuffer.get(i);
                        int oldIndex2 = indicesIntBuffer.get(i + 1);
                        int oldIndex3 = indicesIntBuffer.get(i + 2);
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex1 * 3));
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex1 * 3 + 1));
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex1 * 3 + 2));
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex2 * 3));
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex2 * 3 + 1));
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex2 * 3 + 2));
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex3 * 3));
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex3 * 3 + 1));
                        newVerticesBuffer.putFloat(verticesFloatBuffer.get(oldIndex3 * 3 + 2));
                    }
                    for (int i = part * maxIndexValues; i < upto; i += 3) {
                        int oldIndex1 = indicesIntBuffer.get(i);
                        int oldIndex2 = indicesIntBuffer.get(i + 1);
                        int oldIndex3 = indicesIntBuffer.get(i + 2);
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex1 * 3));
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex1 * 3 + 1));
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex1 * 3 + 2));
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex2 * 3));
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex2 * 3 + 1));
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex2 * 3 + 2));
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex3 * 3));
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex3 * 3 + 1));
                        newNormalsBuffer.putFloat(normalsFloatBuffer.get(oldIndex3 * 3 + 2));
                    }
                    if (materialsFloatBuffer != null) {
                        for (int i = part * maxIndexValues; i < upto; i += 3) {
                            int oldIndex1 = indicesIntBuffer.get(i);
                            int oldIndex2 = indicesIntBuffer.get(i + 1);
                            int oldIndex3 = indicesIntBuffer.get(i + 2);
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex1 * 4));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex1 * 4 + 1));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex1 * 4 + 2));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex1 * 4 + 3));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex2 * 4));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex2 * 4 + 1));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex2 * 4 + 2));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex2 * 4 + 3));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex3 * 4));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex3 * 4 + 1));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex3 * 4 + 2));
                            newColorsBuffer.putFloat(materialsFloatBuffer.get(oldIndex3 * 4 + 3));
                        }
                    }
                    ObjectNode primitiveNode = OBJECT_MAPPER.createObjectNode();
                    int indicesAccessor = addIndicesAccessor(ifcProduct, indicesBufferView, startPositionIndices, nrVertices / 3, min, max);
                    int verticesAccessor = addVerticesAccessor(ifcProduct, verticesBufferView, startPositionVertices, nrVertices);
                    int normalsAccessor = addNormalsAccessor(ifcProduct, normalsBufferView, startPositionNormals, nrVertices);
                    int colorAccessor = -1;
                    if (data.getMaterials() != null) {
                        if (colorsBufferView == -1) {
                            colorsBufferView = createBufferView(totalColorsByteLength, totalIndicesByteLength + totalVerticesByteLength + totalNormalsByteLength, ARRAY_BUFFER, 16);
                        }
                        colorAccessor = addColorsAccessor(ifcProduct, colorsBufferView, startPositionColors, 16);
                    }
                    primitivesNode.add(primitiveNode);
                    primitiveNode.put("indices", indicesAccessor);
                    primitiveNode.put("mode", TRIANGLES);
                    ObjectNode attributesNode = OBJECT_MAPPER.createObjectNode();
                    primitiveNode.set("attributes", attributesNode);
                    attributesNode.put("NORMAL", normalsAccessor);
                    attributesNode.put("POSITION", verticesAccessor);
                    if (colorAccessor != -1) {
                        // attributesNode.put("COLOR_0", colorAccessor);
                        primitiveNode.put("material", vertexColorIndex);
                    } else {
                        primitiveNode.put("material", createOrGetMaterial(ifcProduct.eClass().getName(), IfcColors.getDefaultColor(ifcProduct.eClass().getName())));
                    }
                }
                int meshId = addMesh(ifcProduct, primitivesNode);
                int nodeId = addNode(meshId, ifcProduct);
                translationChildrenNode.add(nodeId);
            } else {
                int maxVal = 0;
                for (int i = 0; i < indicesIntBuffer.capacity(); i++) {
                    int index = indicesIntBuffer.get(i);
                    if (index > Short.MAX_VALUE) {
                        throw new SerializerException("Index too large to store as short " + index);
                    }
                    newIndicesBuffer.putShort((short) (index));
                    if (index > maxVal) {
                        maxVal = index;
                    }
                }
                int[] min = new int[] { 0 };
                int[] max = new int[] { maxVal };
                newVerticesBuffer.put(data.getVertices());
                newNormalsBuffer.put(data.getNormals());
                if (data.getMaterials() != null) {
                    newColorsBuffer.put(data.getMaterials());
                }
                int totalNrIndices = indicesIntBuffer.capacity();
                ArrayNode primitivesNode = OBJECT_MAPPER.createArrayNode();
                ObjectNode primitiveNode = OBJECT_MAPPER.createObjectNode();
                int indicesAccessor = addIndicesAccessor(ifcProduct, indicesBufferView, startPositionIndices, totalNrIndices, min, max);
                int verticesAccessor = addVerticesAccessor(ifcProduct, verticesBufferView, startPositionVertices, data.getVertices().length / 12);
                int normalsAccessor = addNormalsAccessor(ifcProduct, normalsBufferView, startPositionNormals, data.getNormals().length / 12);
                int colorAccessor = -1;
                if (data.getMaterials() != null) {
                    if (colorsBufferView == -1) {
                        colorsBufferView = createBufferView(totalColorsByteLength, totalIndicesByteLength + totalVerticesByteLength + totalNormalsByteLength, ARRAY_BUFFER, 16);
                    }
                    colorAccessor = addColorsAccessor(ifcProduct, colorsBufferView, startPositionColors, data.getVertices().length / 12);
                }
                primitivesNode.add(primitiveNode);
                primitiveNode.put("indices", indicesAccessor);
                primitiveNode.put("mode", TRIANGLES);
                ObjectNode attributesNode = OBJECT_MAPPER.createObjectNode();
                primitiveNode.set("attributes", attributesNode);
                attributesNode.put("NORMAL", normalsAccessor);
                attributesNode.put("POSITION", verticesAccessor);
                if (colorAccessor != -1) {
                    attributesNode.put("COLOR_0", colorAccessor);
                    primitiveNode.put("material", vertexColorIndex);
                } else {
                    primitiveNode.put("material", createOrGetMaterial(ifcProduct.eClass().getName(), IfcColors.getDefaultColor(ifcProduct.eClass().getName())));
                }
                int meshId = addMesh(ifcProduct, primitivesNode);
                int nodeId = addNode(meshId, ifcProduct);
                translationChildrenNode.add(nodeId);
            }
        }
    }
    if (newIndicesBuffer.position() != newIndicesBuffer.capacity()) {
        throw new SerializerException("Not all space used");
    }
    if (newVerticesBuffer.position() != newVerticesBuffer.capacity()) {
        throw new SerializerException("Not all space used");
    }
    if (newNormalsBuffer.position() != newNormalsBuffer.capacity()) {
        throw new SerializerException("Not all space used");
    }
    if (newColorsBuffer.position() != newColorsBuffer.capacity()) {
        throw new SerializerException("Not all space used");
    }
    newIndicesBuffer.position(0);
    newVerticesBuffer.position(0);
    newNormalsBuffer.position(0);
    newColorsBuffer.position(0);
    body.put(newIndicesBuffer);
    body.put(newVerticesBuffer);
    body.put(newNormalsBuffer);
    body.put(newColorsBuffer);
    int vertexColorFragmentShaderBufferViewName = createBufferView(vertexColorFragmentShaderBytes.length, body.position(), -1, -1);
    body.put(vertexColorFragmentShaderBytes);
    int vertexColorVertexShaderBufferViewName = createBufferView(vertexColorVertexShaderBytes.length, body.position(), -1, -1);
    body.put(vertexColorVertexShaderBytes);
    int materialColorFragmentShaderBufferViewName = createBufferView(materialColorFragmentShaderBytes.length, body.position(), -1, -1);
    body.put(materialColorFragmentShaderBytes);
    int materialColorVertexShaderBufferViewName = createBufferView(materialColorVertexShaderBytes.length, body.position(), -1, -1);
    body.put(materialColorVertexShaderBytes);
    // gltfNode.set("animations", createAnimations());
    gltfNode.set("asset", createAsset());
    // gltfNode.set("programs", createPrograms());
    gltfNode.put("scene", 0);
    // gltfNode.set("skins", createSkins());
    // gltfNode.set("techniques", createTechniques());
    // createVertexColorShaders(vertexColorFragmentShaderBufferViewName, vertexColorVertexShaderBufferViewName);
    // createMaterialColorShaders(materialColorFragmentShaderBufferViewName, materialColorVertexShaderBufferViewName);
    addBuffer(body.capacity());
// ArrayNode extensions = OBJECT_MAPPER.createArrayNode();
// extensions.add("KHR_binary_glTF");
// gltfNode.set("extensionsUsed", extensions);
}