/* -*-c++-*- */
/* osgEarth - Geospatial SDK for OpenSceneGraph
 * Copyright 2018 Pelican Mapping
 * http://osgearth.org
 *
 * osgEarth is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
#pragma once

#include <osgEarthImGui/ImGuiPanel>
#include <osgEarth/AnnotationUtils>
#include <osgEarth/TerrainEngineNode>
#include <osgEarth/PagedNode>
#include <osgEarth/MetadataNode>
#include <osgEarth/Viewpoint>
#include <osgEarth/ViewFitter>
#include <osgEarth/ThreeDTilesLayer>
#include <osgEarth/EarthManipulator>
#include <osgEarth/StringUtils>
#include <osgDB/FileUtils>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
#include <osg/TextureBuffer>
#include <osg/ComputeBoundsVisitor>

#include <osg/io_utils>
#include <osg/PolygonMode>

#if defined(__has_include)
#if __has_include(<third_party/portable-file-dialogs/portable-file-dialogs.h>)
#include <third_party/portable-file-dialogs/portable-file-dialogs.h>
#define HAS_PFD
#endif
#endif

struct PrepareForWriting : public osg::NodeVisitor
{
    PrepareForWriting() : osg::NodeVisitor()
    {
        setTraversalMode(TRAVERSE_ALL_CHILDREN);
        setNodeMaskOverride(~0);
    }

    void apply(osg::Node& node)
    {
        apply(node.getStateSet());
        applyUserData(node);
        traverse(node);
    }

    void apply(osg::Drawable& drawable)
    {
        apply(drawable.getStateSet());
        applyUserData(drawable);

        osg::Geometry* geom = drawable.asGeometry();
        if (geom)
            apply(geom);
    }

    void apply(osg::Geometry* geom)
    {
        // This detects any NULL vertex attribute arrays and then populates them.
        // Do this because a NULL VAA will crash the OSG serialization reader (osg 3.4.0)
        osg::Geometry::ArrayList& arrays = geom->getVertexAttribArrayList();
        for (osg::Geometry::ArrayList::iterator i = arrays.begin(); i != arrays.end(); ++i)
        {
            if (i->get() == 0L)
            {
                *i = new osg::FloatArray();
                i->get()->setBinding(osg::Array::BIND_OFF);
            }
        }

        // Get rid of any kdtree since osg can't serialize it.
        geom->setShape(nullptr);
    }

    void apply(osg::StateSet* ss)
    {
        if (!ss) return;

        osg::StateSet::AttributeList& a0 = ss->getAttributeList();
        for (osg::StateSet::AttributeList::iterator i = a0.begin(); i != a0.end(); ++i)
        {
            osg::StateAttribute* sa = i->second.first.get();
            applyUserData(*sa);
        }

        // Disable the texture image-unref feature so we can share the resource
        // across cached tiles.
        osg::StateSet::TextureAttributeList& a = ss->getTextureAttributeList();
        for (osg::StateSet::TextureAttributeList::iterator i = a.begin(); i != a.end(); ++i)
        {
            osg::StateSet::AttributeList& b = *i;
            for (osg::StateSet::AttributeList::iterator j = b.begin(); j != b.end(); ++j)
            {
                osg::StateAttribute* sa = j->second.first.get();
                if (sa)
                {
                    osg::Texture* tex = dynamic_cast<osg::Texture*>(sa);
                    if (tex)
                    {
                        tex->setUnRefImageDataAfterApply(false);
                    }
                    else
                    {
                        applyUserData(*sa);
                    }
                }
            }
        }

        applyUserData(*ss);
    }

    void applyUserData(osg::Object& object)
    {
        object.setUserDataContainer(0L);
    }
};

struct WriteExternalImages : public osgEarth::TextureAndImageVisitor
{
    std::string _destinationPath;

    WriteExternalImages(const std::string& destinationPath)
        : TextureAndImageVisitor(),
        _destinationPath(destinationPath)
    {
        setTraversalMode(TRAVERSE_ALL_CHILDREN);
        setNodeMaskOverride(~0L);
    }

    void apply(osg::Texture& tex)
    {
        if (dynamic_cast<osg::TextureBuffer*>(&tex) != 0L)
        {
            // skip texture buffers, they need no prep and
            // will be inlined as long as they have a write hint
            // set to STORE_INLINE.
        }
        else
        {
            osgEarth::TextureAndImageVisitor::apply(tex);
        }
    }

    void apply(osg::Image& image)
    {
        std::string path = image.getFileName();
        if (path.empty())
        {
            OE_WARN << "ERROR image with blank filename.\n";
            return;
        }

        std::string format = "dds";
        unsigned int hash = osgEarth::hashString(path);
        std::string relativeName = osgEarth::Util::Stringify() << "images/" << hash << "." << format;
        std::string filename = osgDB::concatPaths(_destinationPath, relativeName);
        image.setFileName(relativeName);
        image.setWriteHint(osg::Image::EXTERNAL_FILE);
        osg::ref_ptr < osgDB::Options > options = new osgDB::Options;
        options->setOptionString("ddsNoAutoFlipWrite");
        osgDB::makeDirectoryForFile(filename);
        osgDB::writeImageFile(image, filename, options.get());
    }
};

namespace osgEarth
{
    using namespace osgEarth::Util;


    static bool hideEmptyPagedNodes = false;
    static std::unordered_map<osg::Node*, bool> hasGeom;

    struct ArrayStats
    {
        unsigned int arrayCount = 0;
        unsigned int elementCount = 0;
        unsigned int size = 0;
    };

    struct MemoryStats
    {
        void reset()
        {
            arrayStats.clear();
            totalDataSize = 0;
            totalGeometries = 0;
            totalPrimitiveSets = 0;
            computed = false;
        }

        void addArray(osg::Drawable::AttributeTypes index, const osg::Array* array)
        {
            if (array && array->getNumElements() > 0)
            {
                arrayStats[index].arrayCount += 1;
                arrayStats[index].elementCount += array->getNumElements();;
                arrayStats[index].size += array->getTotalDataSize();
                totalDataSize += array->getTotalDataSize();
            }
            computed = true;
        }

        void addGeometry(const osg::Geometry& geometry)
        {
            if (geometry.getVertexArray())
            {
                addArray(osg::Geometry::VERTICES, geometry.getVertexArray());
            }

            if (geometry.getNormalArray())
            {
                addArray(osg::Geometry::NORMALS, geometry.getNormalArray());
            }

            if (geometry.getColorArray())
            {
                addArray(osg::Geometry::COLORS, geometry.getColorArray());
            }

            if (geometry.getSecondaryColorArray())
            {
                addArray(osg::Geometry::SECONDARY_COLORS, geometry.getSecondaryColorArray());
            }

            if (geometry.getFogCoordArray())
            {
                addArray(osg::Geometry::FOG_COORDS, geometry.getFogCoordArray());
            }

            const auto& texCoordArrays = geometry.getTexCoordArrayList();
            for (unsigned int i = 0; i < texCoordArrays.size(); ++i)
            {
                if (texCoordArrays[i].valid())
                {
                    addArray((osg::Drawable::AttributeTypes)(osg::Geometry::TEXTURE_COORDS_0 + i), texCoordArrays[i].get());
                }
            }

            const osg::Geometry::ArrayList& arrays = geometry.getVertexAttribArrayList();
            for (unsigned int i = 0; i < arrays.size(); ++i)
            {
                if (arrays[i].valid())
                {
                    addArray((osg::Drawable::AttributeTypes)i, arrays[i].get());
                }
            }

            ++totalGeometries;

            totalPrimitiveSets += geometry.getNumPrimitiveSets();
        }

        std::map< osg::Drawable::AttributeTypes, ArrayStats > arrayStats;
        unsigned int totalDataSize = 0;
        unsigned int totalGeometries = 0;
        unsigned int totalPrimitiveSets = 0;
        bool computed = false;
    };

    class ComputeMemoryStatsVisitor : public osg::NodeVisitor
    {
    public:
        ComputeMemoryStatsVisitor() :
            osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
        {
        }

        virtual void apply(osg::Geometry& geometry) override
        {
            stats.addGeometry(geometry);
        }

        MemoryStats stats;
    };

    template<typename T>
    std::string printArrayValue(const T* array)
    {
        std::stringstream buf;
        unsigned int size = array->size();
        for (unsigned i = 0; i < size; ++i)
        {
            if (i > 0)
            {
                buf << ", ";
            }
            buf << (*array)[i];
        }
        return buf.str();
    }

    static const char* arrayBindingToString(osg::Array::Binding binding)
    {
        switch (binding)
        {
        case osg::Array::BIND_PER_VERTEX:
            return "BIND_PER_VERTEX";
        case osg::Array::BIND_OVERALL:
            return "BIND_OVERALL";
        case osg::Array::BIND_PER_PRIMITIVE_SET:
            return "BIND_PER_PRIMITIVE_SET";
        case osg::Array::BIND_OFF:
            return "BIND_OFF";
        default:
            return "BIND_UNDEFINED";
        }
    }

    static const char* attributeTypeToString(osg::Drawable::AttributeType attributeType)
    {
        switch (attributeType)
        {
        case osg::Drawable::VERTICES:
            return "VERTICES";
        case osg::Drawable::WEIGHTS:
            return "WEIGHTS";
        case osg::Drawable::NORMALS:
            return "NORMALS";
        case osg::Drawable::COLORS:
            return "COLORS";
        case osg::Drawable::SECONDARY_COLORS:
            return "SECONDARY_COLORS";
        case osg::Drawable::FOG_COORDS:
            return "FOG_COORDS";
        case osg::Drawable::ATTRIBUTE_6:
            return "ATTRIBUTE_6";
        case osg::Drawable::ATTRIBUTE_7:
            return "ATTRIBUTE_7";
        case osg::Drawable::TEXTURE_COORDS_0:
            return "TEXTURE_COORDS_0";
        case osg::Drawable::TEXTURE_COORDS_1:
            return "TEXTURE_COORDS_1";
        case osg::Drawable::TEXTURE_COORDS_2:
            return "TEXTURE_COORDS_2";
        case osg::Drawable::TEXTURE_COORDS_3:
            return "TEXTURE_COORDS_3";
        case osg::Drawable::TEXTURE_COORDS_4:
            return "TEXTURE_COORDS_4";
        case osg::Drawable::TEXTURE_COORDS_5:
            return "TEXTURE_COORDS_5";
        case osg::Drawable::TEXTURE_COORDS_6:
            return "TEXTURE_COORDS_6";
        case osg::Drawable::TEXTURE_COORDS_7:
            return "TEXTURE_COORDS_7";
        default:
            return "Uknown Array";
        }
    }

    template<typename T>
    void printArrayTablePretty(const std::string& name, const T* array)
    {
        if (!array) return;
        static ImGuiTableFlags flags = ImGuiTableFlags_ScrollY | ImGuiTableFlags_RowBg | ImGuiTableFlags_BordersOuter | ImGuiTableFlags_BordersV | ImGuiTableFlags_SizingFixedFit;

        const float TEXT_BASE_HEIGHT = ImGui::GetTextLineHeightWithSpacing();

        // When using ScrollX or ScrollY we need to specify a size for our table container!
        // Otherwise by default the table will fit all available space, like a BeginChild() call.
        ImGui::Text(typeid(*array).name());
        ImGui::Text("Binding %s", arrayBindingToString(array->getBinding()));
        ImGui::Text("Size: %dkb", (unsigned int)(array->getTotalDataSize() / 1024.0f));
        ImVec2 outer_size = ImVec2(0.0f, TEXT_BASE_HEIGHT * 8);
        if (ImGui::BeginTable(name.c_str(), 2, flags, outer_size))
        {
            ImGui::TableSetupScrollFreeze(0, 1); // Make top row always visible
            ImGui::TableSetupColumn("Index", ImGuiTableColumnFlags_None);
            ImGui::TableSetupColumn("Value", ImGuiTableColumnFlags_None);
            ImGui::TableHeadersRow();

            ImGuiListClipper clipper;
            clipper.Begin(array->size());
            while (clipper.Step())
            {
                for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
                {
                    ImGui::TableNextRow();

                    ImGui::TableSetColumnIndex(0);
                    ImGui::Text("%d", i);

                    ImGui::TableSetColumnIndex(1);

                    std::stringstream val;
                    val << (*array)[i];
                    ImGui::Text(val.str().c_str());
                }
            }
            ImGui::EndTable();
        }
    }

    inline void printArrayTable(const osg::Array* array)
    {
        switch (array->getType())
        {
        case osg::Array::ByteArrayType:
            printArrayTablePretty("Data", static_cast<const osg::ByteArray*>(array));
            break;
        case osg::Array::ShortArrayType:
            printArrayTablePretty("Data", static_cast<const osg::ShortArray*>(array));
            break;
        case osg::Array::IntArrayType:
            printArrayTablePretty("Data", static_cast<const osg::IntArray*>(array));
            break;
        case osg::Array::UByteArrayType:
            printArrayTablePretty("Data", static_cast<const osg::UByteArray*>(array));
            break;
        case osg::Array::UShortArrayType:
            printArrayTablePretty("Data", static_cast<const osg::UShortArray*>(array));
            break;
        case osg::Array::UIntArrayType:
            printArrayTablePretty("Data", static_cast<const osg::UIntArray*>(array));
            break;
        case osg::Array::FloatArrayType:
            printArrayTablePretty("Data", static_cast<const osg::FloatArray*>(array));
            break;
        case osg::Array::DoubleArrayType:
            printArrayTablePretty("Data", static_cast<const osg::DoubleArray*>(array));
            break;
        case osg::Array::Vec2bArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec2bArray*>(array));
            break;
        case osg::Array::Vec3bArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec3bArray*>(array));
            break;
        case osg::Array::Vec4bArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec4bArray*>(array));
            break;
        case osg::Array::Vec2sArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec2sArray*>(array));
            break;
        case osg::Array::Vec3sArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec3sArray*>(array));
            break;
        case osg::Array::Vec4sArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec4sArray*>(array));
            break;
        case osg::Array::Vec2iArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec2iArray*>(array));
            break;
        case osg::Array::Vec3iArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec3iArray*>(array));
            break;
        case osg::Array::Vec4iArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec4iArray*>(array));
            break;
#if 0
        case osg::Array::Vec2ubArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec2ubArray*>(array));
            break;
        case osg::Array::Vec3ubArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec3ubArray*>(array));
            break;
#endif
        case osg::Array::Vec4ubArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec4ubArray*>(array));
            break;
#if 0
        case osg::Array::Vec2usArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec2usArray*>(array));
            break;
        case osg::Array::Vec3usArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec3usArray*>(array));
            break;
        case osg::Array::Vec4usArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec4usArray*>(array));
            break;
        case osg::Array::Vec2uiArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec2uiArray*>(array));
            break;
        case osg::Array::Vec3uiArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec3uiArray*>(array));
            break;
        case osg::Array::Vec4uiArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec4uiArray*>(array));
            break;
#endif
        case osg::Array::Vec2ArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec2Array*>(array));
            break;
        case osg::Array::Vec3ArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec3Array*>(array));
            break;
        case osg::Array::Vec4ArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec4Array*>(array));
            break;
        case osg::Array::Vec2dArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec2dArray*>(array));
            break;
        case osg::Array::Vec3dArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec3dArray*>(array));
            break;
        case osg::Array::Vec4dArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Vec4dArray*>(array));
            break;
#if 0
        case osg::Array::MatrixArrayType:
            printArrayTablePretty("Data", static_cast<const osg::MatrixfArray*>(array));
            break;
        case osg::Array::MatrixdArrayType:
            printArrayTablePretty("Data", static_cast<const osg::MatrixdArray*>(array));
            break;
        case osg::Array::QuatArrayType:
            printArrayTablePretty("Data", static_cast<const osg::QuatArray*>(array));
            break;
#endif
        case osg::Array::UInt64ArrayType:
            printArrayTablePretty("Data", static_cast<const osg::UInt64Array*>(array));
            break;
        case osg::Array::Int64ArrayType:
            printArrayTablePretty("Data", static_cast<const osg::Int64Array*>(array));
            break;
        default:
            ImGui::Text("Unknown array type");
            break;
        }
    }



    static std::string printUniformValue(osg::Uniform* uniform)
    {
        if (uniform->getFloatArray()) return printArrayValue(uniform->getFloatArray());
        if (uniform->getDoubleArray()) return printArrayValue(uniform->getDoubleArray());
        if (uniform->getIntArray()) return printArrayValue(uniform->getIntArray());
        if (uniform->getUIntArray()) return printArrayValue(uniform->getUIntArray());
        if (uniform->getUInt64Array()) return printArrayValue(uniform->getUInt64Array());
        if (uniform->getInt64Array()) return printArrayValue(uniform->getInt64Array());

        return "";
    }


    class SceneGraphGUI : public ImGuiPanel
    {
    public:

        osg::ref_ptr<osg::Node> getSelectedNode()
        {
            if (!_selectedNodePath.empty())
            {
                return _selectedNodePath.back();
            }
            return nullptr;
        }

        const osg::RefNodePath& getSelectedNodePath()
        {
            return _selectedNodePath;
        }

        void setSelectedNodePath(const osg::NodePath& nodePath)
        {
            _selectedNodePath.clear();
            for (auto itr = nodePath.begin(); itr != nodePath.end(); ++itr)
            {
                _selectedNodePath.push_back(*itr);
            }
            _boundsDirty = true;
            _memoryStats.reset();
        }

        struct SelectNodeHandler : public osgGA::GUIEventHandler
        {
            SceneGraphGUI* _owner;

            SelectNodeHandler(SceneGraphGUI* owner) :
                _owner(owner)
            {
            }

            bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa)
            {
                osgViewer::View* view = static_cast<osgViewer::View*>(aa.asView());

                if (ea.getEventType() == ea.PUSH && ea.getButton() == ea.LEFT_MOUSE_BUTTON && ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_CTRL)
                {
                    float w = 5.0;
                    float h = 5.0;

                    float x = ea.getX();
                    float y = ea.getY();

                    osg::ref_ptr< osgUtil::PolytopeIntersector> picker = new osgUtil::PolytopeIntersector(osgUtil::Intersector::WINDOW, x - w, y - h, x + w, y + h);
                    picker->setIntersectionLimit(osgUtil::Intersector::LIMIT_NEAREST);
                    osgUtil::IntersectionVisitor iv(picker.get());
                    // This is a hack, but we set the node mask to something other than 1 << 2 which is what the "selected bounds" node mask is set to to avoid picking it.
                    // We should rework this later into something more formal so we can add widget type nodes that aren't generally interacted with.
                    iv.setTraversalMask((1 << 1));
                    view->getCamera()->accept(iv);
                    if (picker->containsIntersections())
                    {
                        osg::NodePath nodePath = picker->getIntersections().begin()->nodePath;
                        nodePath.push_back(picker->getIntersections().begin()->drawable.get());
                        _owner->setSelectedNodePath(nodePath);

                    }
                }
                return false;
            }
        };

        class SceneHierarchyVisitor : public osg::NodeVisitor
        {
        public:
            SceneGraphGUI* _owner;

            SceneHierarchyVisitor(SceneGraphGUI* owner) :
                osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
                _owner(owner)
            {
                setNodeMaskOverride(~0);
            }

            void apply(osg::Node& node)
            {
                // Non groups act as leaf nodes
                std::string label = getLabel(node);
                ImGuiTreeNodeFlags node_flags = base_flags;
                node_flags |= ImGuiTreeNodeFlags_Leaf | ImGuiTreeNodeFlags_NoTreePushOnOpen;
                if (_owner->getSelectedNode() == &node)
                {
                    node_flags |= ImGuiTreeNodeFlags_Selected;
                }

                bool nodeOff = node.getNodeMask() == 0u;
                if (nodeOff)
                {
                    ImGui::PushStyleColor(ImGuiCol_Text, ImGui::GetStyle().Colors[ImGuiCol_TextDisabled]);
                }
                ImGui::TreeNodeEx(&node, node_flags, label.c_str());
                if (nodeOff)
                {
                    ImGui::PopStyleColor();
                }
                if (ImGui::IsItemClicked())
                {
                    _owner->setSelectedNodePath(getNodePath());
                }
                if (ImGui::BeginDragDropTarget())
                {
                    if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("TEXTURE"))
                    {
                        osg::Texture2D* droppedTexture = *(osg::Texture2D**)payload->Data;
                        if (droppedTexture)
                        {
                            node.getOrCreateStateSet()->setTextureAttributeAndModes(0, droppedTexture, osg::StateAttribute::ON);
                        }
                    }
                    ImGui::EndDragDropTarget();
                }
            }

            void apply(osg::Group& node)
            {
                if (hideEmptyPagedNodes)
                {
                    auto pagedNode = dynamic_cast<osgEarth::PagedNode2*>(&node);
                    if (pagedNode) {
                        auto i = hasGeom.emplace(&node, false);
                        if (i.second) { // new
                            osg::ComputeBoundsVisitor cb;
                            node.accept(cb);
                            osg::BoundingBox bb = cb.getBoundingBox();
                            i.first->second = bb.valid();
                        }
                        if (!i.first->second) return;
                    }
                }

                std::string label = getLabel(node);
                ImGuiTreeNodeFlags node_flags = base_flags;
                if (_owner->getSelectedNode() == &node)
                {
                    node_flags |= ImGuiTreeNodeFlags_Selected;
                }

                if (isInSelectedNodePath(&node))
                {
                    ImGui::SetNextItemOpen(true, ImGuiCond_Once);
                }

                bool nodeOff = node.getNodeMask() == 0u;
                if (nodeOff)
                {
                    ImGui::PushStyleColor(ImGuiCol_Text, ImGui::GetStyle().Colors[ImGuiCol_TextDisabled]);
                }

                bool node_open = ImGui::TreeNodeEx(&node, node_flags, label.c_str());
                if (nodeOff)
                {
                    ImGui::PopStyleColor();
                }
                if (ImGui::IsItemClicked())
                {
                    _owner->setSelectedNodePath(getNodePath());
                }
                if (ImGui::BeginDragDropTarget())
                {
                    if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("NODE"))
                    {
                        osg::Node* droppedNode = *(osg::Node**)payload->Data;
                        if (droppedNode)
                        {
                            node.addChild(droppedNode);
                        }
                    }
                    else if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("TEXTURE"))
                    {
                        osg::Texture2D* droppedTexture = *(osg::Texture2D**)payload->Data;
                        if (droppedTexture)
                        {
                            node.getOrCreateStateSet()->setTextureAttributeAndModes(0, droppedTexture, osg::StateAttribute::ON);
                        }
                    }
                    ImGui::EndDragDropTarget();
                }

                if (node_open)
                {
                    traverse(node);
                    ImGui::TreePop();
                }
            }

            std::string getLabel(osg::Node& node)
            {
                std::stringstream buf;
                buf << node.getName() << " [" << typeid(node).name() << "]";

                osg::Group* group = node.asGroup();
                if (group)
                {
                    buf << " (" << group->getNumChildren() << ")";
                }

                return buf.str();
            }

            bool isInSelectedNodePath(osg::Node* node)
            {
                auto selectedNodePaths = _owner->getSelectedNodePath();

                for (unsigned int i = 0; i < selectedNodePaths.size(); i++)
                {
                    if (node == selectedNodePaths[i].get())
                    {
                        return true;
                    }
                }
                return false;
            }

            ImGuiTreeNodeFlags base_flags = ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick | ImGuiTreeNodeFlags_SpanAvailWidth;
        };

        SceneGraphGUI() :
            ImGuiPanel("Scene Graph Inspector"),
            _installedSelectNodeHandler(false),
            _selectedBounds(0),
            _node(nullptr)
        {
        }

        void draw(osg::RenderInfo& ri) override
        {
            if (!isVisible())
                return;

            if (ImGui::Begin(name(), visible()))
            {
                if (_node == nullptr)
                    _node = ri.getCurrentCamera();

                if (!_mapNode.valid())
                    _mapNode = osgEarth::findTopMostNodeOfType<MapNode>(ri.getCurrentCamera());

                if (!_installedSelectNodeHandler)
                {
                    auto view = dynamic_cast<osgViewer::View*>(ri.getView());
                    view->addEventHandler(new SelectNodeHandler(this));
                    _installedSelectNodeHandler = true;
                }

                auto size = ImGui::GetWindowSize();

                if (ImGui::CollapsingHeader("Scene"))
                {
                    // Change the size based on whether the properties panel is
                    ImGui::BeginChild("Scene", ImVec2(0, getSelectedNode() && _propertiesExpanded ? 0.6f * size.y : 0.90f * size.y), false, ImGuiWindowFlags_HorizontalScrollbar);

                    SceneHierarchyVisitor v(this);
                    _node->accept(v);

                    ImGui::EndChild();
                }

                if (getSelectedNode())
                {
                    _propertiesExpanded = ImGui::CollapsingHeader("Properties", ImGuiTreeNodeFlags_DefaultOpen);
                    if (_propertiesExpanded)
                    {
                        ImGui::BeginChild("Properties");
                        auto view = dynamic_cast<osgViewer::View*>(ri.getView());
                        auto manip = dynamic_cast<EarthManipulator*>(view->getCameraManipulator());
                        properties(getSelectedNode(), ri, manip, _mapNode.get());
                        ImGui::EndChild();
                    }
                }
                ImGui::End();
            }
            // If they closed the tool deselect the node.
            if (!isVisible() && getSelectedNode())
            {
                osg::NodePath empty;
                setSelectedNodePath(empty);
            }

            if (_boundsDirty)
            {
                updateBoundsDebug(_mapNode.get());
            }
        }

        void updateBoundsDebug(MapNode* mapNode)
        {
            if (_selectedBounds)
            {
                mapNode->removeChild(_selectedBounds);
                _selectedBounds = nullptr;
            }

            auto selectedNode = getSelectedNode();

            if (selectedNode)
            {
                osg::RefNodePath refNodePath = getSelectedNodePath();
                osg::NodePath nodePath;
                for (unsigned int i = 0; i < refNodePath.size(); ++i)
                {
                    nodePath.push_back(refNodePath[i].get());
                }

                if (nodePath.back()->asTransform())
                {
                    nodePath.pop_back();
                }

                osg::Matrixd localToWorld = osg::computeLocalToWorld(nodePath);

                osg::Drawable* drawable = selectedNode->asDrawable();
                if (drawable)
                {
                    osg::BoundingBoxd bb = drawable->getBoundingBox();
                    if (bb.valid())
                    {
                        _selectedBounds = new osg::MatrixTransform;
                        _selectedBounds->setName("Bounds");
                        _selectedBounds->setMatrix(localToWorld);

                        osg::MatrixTransform* center = new osg::MatrixTransform;
                        center->addChild(AnnotationUtils::createBoundingBox(bb, Color::Yellow));
                        _selectedBounds->addChild(center);

                        _selectedBounds->setNodeMask(1 << 2);
                        mapNode->addChild(_selectedBounds);
                    }
                }
                else
                {
                    osg::BoundingSphered bs = osg::BoundingSphered(selectedNode->getBound().center(), selectedNode->getBound().radius());
                    if (bs.radius() > 0)
                    {
                        _selectedBounds = new osg::MatrixTransform;
                        _selectedBounds->setName("Bounds");
                        _selectedBounds->setMatrix(localToWorld);

                        osg::MatrixTransform* center = new osg::MatrixTransform;
                        center->setMatrix(osg::Matrix::translate(bs.center()));
                        center->addChild(AnnotationUtils::createSphere(selectedNode->getBound().radius(), Color::Yellow));
                        _selectedBounds->addChild(center);

                        _selectedBounds->getOrCreateStateSet()->setAttributeAndModes(new osg::PolygonMode(osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::LINE), 1);
                        _selectedBounds->setNodeMask(1 << 2);
                        mapNode->addChild(_selectedBounds);
                    }
                }
            }

            _boundsDirty = false;
        }


        void properties(osg::Node* node, osg::RenderInfo& ri, EarthManipulator* manip, MapNode* mapNode)
        {
            if (manip && ImGui::Button("Zoom to"))
            {
                osg::NodePath nodePath = node->getParentalNodePaths()[0];
                osg::Matrixd localToWorld = osg::computeLocalToWorld(nodePath);

                osg::BoundingSphered bs(node->getBound().center(), node->getBound().radius());
                if (bs.valid())
                {
                    bs.center() += localToWorld.getTrans();
                    osg::Vec3d c = bs.center();
                    double r = bs.radius();
                    const SpatialReference* mapSRS = mapNode->getMap()->getSRS();

                    std::vector<GeoPoint> points;
                    GeoPoint p;
                    p.fromWorld(mapSRS, osg::Vec3d(c.x() + r, c.y(), c.z())); points.push_back(p);
                    p.fromWorld(mapSRS, osg::Vec3d(c.x() - r, c.y(), c.z())); points.push_back(p);
                    p.fromWorld(mapSRS, osg::Vec3d(c.x(), c.y() + r, c.z())); points.push_back(p);
                    p.fromWorld(mapSRS, osg::Vec3d(c.x(), c.y() - r, c.z())); points.push_back(p);
                    p.fromWorld(mapSRS, osg::Vec3d(c.x(), c.y(), c.z() + r)); points.push_back(p);
                    p.fromWorld(mapSRS, osg::Vec3d(c.x(), c.y(), c.z() - r)); points.push_back(p);

                    ViewFitter fitter(mapNode->getMap()->getSRS(), ri.getCurrentCamera());
                    Viewpoint vp;
                    if (fitter.createViewpoint(points, vp))
                    {
                        manip->setViewpoint(vp, 2.0);
                    }
                }
            }

#ifdef HAS_PFD
            if (ImGui::Button("Export"))
            {
                auto f = pfd::save_file("Save file", pfd::path::home());
                if (!f.result().empty())
                {
                    std::string filename = f.result();
                    osgDB::makeDirectoryForFile(filename);

                    PrepareForWriting prepare;
                    node->accept(prepare);
                    std::string path = osgDB::getFilePath(filename);

                    // Maybe make this optional
                    WriteExternalImages write(path);
                    node->accept(write);

                    osg::ref_ptr< osgDB::Options > writeOptions = new osgDB::Options;
                    osgDB::writeNodeFile(*node, filename, writeOptions.get());
                }
            }

            osg::Group* group = node->asGroup();
            if (group)
            {
                if (ImGui::Button("Add Node"))
                {
                    auto f = pfd::open_file("Choose files to read", pfd::path::home(),
                        { "All Files", "*" },
                        pfd::opt::multiselect);

                    for (auto const& name : f.result())
                    {
                        osg::ref_ptr< osg::Node > node = osgDB::readNodeFile(name);
                        if (node.valid())
                        {
                            Registry::instance()->shaderGenerator().run(node.get());
                            group->addChild(node.get());
                        }
                    }
                }
            }
#endif

            bool visible = node->getNodeMask() != 0;
            if (ImGui::Checkbox("Visible", &visible))
            {
                node->setNodeMask(visible);
            }

            if (ImGui::TreeNode("General"))
            {
                ImGui::Text("Type %s", typeid(*node).name());
                ImGui::Text("Name %s", node->getName().c_str());

                osg::Drawable* drawable = node->asDrawable();
                if (drawable)
                {
                    osg::BoundingBox bbox = drawable->getBoundingBox();
                    double width = bbox.xMax() - bbox.xMin();
                    double depth = bbox.yMax() - bbox.yMin();
                    double height = bbox.zMax() - bbox.zMin();

                    ImGui::Text("Bounding box (local) center=(%.3f, %.3f, %.3f) dimensions=%.3f x %.3f %.3f", bbox.center().x(), bbox.center().y(), bbox.center().z(), width, depth, height);
                }
                else
                {
                    osg::BoundingSphere bs = node->getBound();
                    ImGui::Text("Bounding sphere (local) center=(%.3f, %.3f, %.3f) radius=%.3f", bs.center().x(), bs.center().y(), bs.center().z(), bs.radius());
                }

                ImGui::Text("Reference count %d", node->referenceCount());

                ImGui::TreePop();
            }

            if (ImGui::TreeNode("Memory Usage"))
            {
                if (_memoryStats.computed)
                {
                    ImGui::Text("Geometry Count: %d", _memoryStats.totalGeometries);
                    ImGui::Text("PrimitiveSets: %d", _memoryStats.totalPrimitiveSets);
                    ImGui::Text("Total Data Size %dkb", (unsigned int)(_memoryStats.totalDataSize / 1024.0f));
                    if (ImGui::BeginTable("Memory", 4, ImGuiTableFlags_Borders))
                    {
                        ImGui::TableSetupColumn("Attribute");
                        ImGui::TableSetupColumn("Array Count");
                        ImGui::TableSetupColumn("Element Count");
                        ImGui::TableSetupColumn("Size");
                        ImGui::TableHeadersRow();

                        for (auto& a : _memoryStats.arrayStats)
                        {
                            ImGui::TableNextColumn(); ImGui::Text(attributeTypeToString((osg::Drawable::AttributeType)a.first));
                            ImGui::TableNextColumn(); ImGui::Text("%d", a.second.arrayCount);
                            ImGui::TableNextColumn(); ImGui::Text("%d", a.second.elementCount);
                            ImGui::TableNextColumn(); ImGui::Text("%dkb", (unsigned int)(a.second.size / 1024.0f));
                        }
                        ImGui::EndTable();
                    }
                }

                if (ImGui::Button("Compute"))
                {
                    ComputeMemoryStatsVisitor visitor;
                    getSelectedNode()->accept(visitor);
                    _memoryStats = visitor.stats;
                }

                ImGui::TreePop();
            }

            osg::MatrixTransform* matrixTransform = dynamic_cast<osg::MatrixTransform*>(node);
            if (matrixTransform)
            {
                if (ImGui::TreeNode("Transform"))
                {
                    bool dirty = false;
                    osg::Matrix matrix = matrixTransform->getMatrix();
                    osg::Vec3d translate = matrixTransform->getMatrix().getTrans();
                    if (ImGui::InputScalarN("Translation", ImGuiDataType_Double, translate._v, 3))
                    {
                        dirty = true;
                    }

                    osg::Vec3d scale = matrixTransform->getMatrix().getScale();
                    if (ImGui::InputScalarN("Scale", ImGuiDataType_Double, scale._v, 3))
                    {
                        dirty = true;
                    }
                    osg::Quat rot = matrixTransform->getMatrix().getRotate();
                    if (ImGui::InputScalarN("Rotation", ImGuiDataType_Double, rot._v, 4))
                    {
                        dirty = true;
                    }

                    if (dirty)
                    {
                        osg::Matrix newMatrix = osg::Matrix::translate(translate) * osg::Matrix::rotate(rot) * osg::Matrixd::scale(scale);
                        matrixTransform->setMatrix(newMatrix);
                    }
                    ImGui::TreePop();
                }
            }

            osgEarth::PagedNode2* pagedNode2 = dynamic_cast<osgEarth::PagedNode2*>(node);
            if (pagedNode2)
            {
                if (ImGui::TreeNode("PagedNode"))
                {
                    ImGui::Text("Min range %.3f", pagedNode2->getMinRange());
                    ImGui::Text("Max range %.3f", pagedNode2->getMaxRange());
                    ImGui::TreePop();
                }
            }

            osgEarth::Contrib::ThreeDTiles::ThreeDTileNode* threeDTiles = dynamic_cast<osgEarth::Contrib::ThreeDTiles::ThreeDTileNode*>(node);
            if (threeDTiles)
            {
                if (ImGui::TreeNode("3D Tiles"))
                {
                    std::string content = threeDTiles->getTile()->content()->getJSON().toStyledString();
                    ImGui::Text("Content");
                    ImGui::TextWrapped(content.c_str());
                }
            }

            osg::Camera* cam = dynamic_cast<osg::Camera*>(node);
            if (cam)
            {
                if (ImGui::TreeNode("osg::Camera"))
                {
                    const std::string order[3] = { "PRE_RENDER", "NESTED_RENDER", "POST_RENDER" };
                    const std::string proj[2] = { "PERSP", "ORTHO" };
                    ImGui::Text("Render order: %s", order[(int)cam->getRenderOrder()].c_str());
                    ImGui::Text("Projection: %s", proj[ProjectionMatrix::isOrtho(cam->getProjectionMatrix()) ? 1 : 0].c_str());
                    ImGui::Text("Cull mask: %0x%.8X", cam->getCullMask());
                    ImGui::Text("Gfx context: %0x%.16X", (std::uintptr_t)cam->getGraphicsContext());
                    ImGui::Text("Gfx context ID: %d", cam->getGraphicsContext()->getState()->getContextID());
                    ImGui::TreePop();
                }
            }

            osgEarth::MetadataNode* metadata = dynamic_cast<osgEarth::MetadataNode*>(node);
            if (metadata)
            {
                if (ImGui::TreeNode("Metadata"))
                {
                    static ImGuiTableFlags flags = ImGuiTableFlags_ScrollY | ImGuiTableFlags_RowBg | ImGuiTableFlags_BordersOuter | ImGuiTableFlags_BordersV | ImGuiTableFlags_SizingFixedFit;

                    const float TEXT_BASE_HEIGHT = ImGui::GetTextLineHeightWithSpacing();

                    // When using ScrollX or ScrollY we need to specify a size for our table container!
                    // Otherwise by default the table will fit all available space, like a BeginChild() call.
                    ImGui::Text("Features %d", metadata->getNumFeatures());
                    ImVec2 outer_size = ImVec2(0.0f, TEXT_BASE_HEIGHT * 8);
                    if (ImGui::BeginTable("Features", 4, flags, outer_size))
                    {
                        ImGui::TableSetupScrollFreeze(0, 1); // Make top row always visible
                        ImGui::TableSetupColumn("Index", ImGuiTableColumnFlags_None);
                        ImGui::TableSetupColumn("Feature ID", ImGuiTableColumnFlags_None);
                        ImGui::TableSetupColumn("Object ID", ImGuiTableColumnFlags_None);
                        ImGui::TableSetupColumn("Visible", ImGuiTableColumnFlags_None);
                        ImGui::TableHeadersRow();

                        ImGuiListClipper clipper;
                        clipper.Begin(metadata->getNumFeatures());
                        while (clipper.Step())
                        {
                            for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
                            {
                                ImGui::PushID(i);

                                // TODO:  Add feature properties
                                ImGui::TableNextRow();

                                ImGui::TableSetColumnIndex(0);
                                ImGui::Text("%d", i);

                                ImGui::TableSetColumnIndex(1);
                                ImGui::Text("%I64d", metadata->getFeature(i)->getFID());

                                ImGui::TableSetColumnIndex(2);
                                ImGui::Text("%I64d", metadata->getObjectID(i));

                                ImGui::TableSetColumnIndex(3);
                                bool visible = metadata->getVisible(i);
                                if (ImGui::Checkbox("", &visible))
                                {
                                    metadata->setVisible(i, visible);
                                }

#if 0
                                ImGui::TableSetColumnIndex(3);
                                auto feature = metadata->getFeature(i);
                                if (feature)
                                {
                                    std::stringstream buf;
                                    for (auto& attr : feature->getAttrs())
                                    {
                                        buf << attr.first << "=" << attr.second.getString() << std::endl;
                                    }
                                    //std::string geojson = feature->getGeoJSON();
                                    ImGui::Text(buf.str().c_str());
                                }
                                else
                                {
                                    ImGui::Text("Null feature");
                                }
#endif

                                ImGui::PopID();
                            }
                        }
                        ImGui::EndTable();
                    }

                    ImGui::TreePop();
                }
            }

            osg::StateSet* stateset = node->getStateSet();
            if (stateset)
            {
                if (ImGui::TreeNode("State Set"))
                {
                    if (!stateset->getTextureAttributeList().empty() && ImGui::TreeNode("Textures"))
                    {
                        unsigned int textureWidth = 50;
                        for (unsigned int i = 0; i < stateset->getTextureAttributeList().size(); ++i)
                        {
                            osg::Texture* texture = dynamic_cast<osg::Texture*>(stateset->getTextureAttribute(i, osg::StateAttribute::TEXTURE));
                            if (texture)
                            {
                                osg::Texture2D* texture2D = dynamic_cast<osg::Texture2D*>(texture);

                                ImGui::PushID(texture);
                                ImGui::BeginGroup();
                                ImGui::Text("Unit %d", i);
                                ImGui::Text("Type %s", typeid(*texture).name());
                                ImGui::Text("Name %s", texture->getName().c_str());
                                if (texture2D)
                                {
                                    ImGuiEx::OSGTexture(texture2D, ri, textureWidth);
                                }
                                ImGui::EndGroup();
                            }
                        }
                        ImGui::TreePop();
                    }

                    VirtualProgram* virtualProgram = VirtualProgram::get(stateset);
                    if (virtualProgram && ImGui::TreeNode("Shaders"))
                    {
                        VirtualProgram::ShaderMap shaderMap;
                        virtualProgram->getShaderMap(shaderMap);
                        for (auto& s : shaderMap)
                        {
                            ImGui::Text("Name %s", s.second._shader->getName().c_str());
                            ImGui::Text("Location %s", FunctionLocationToString(s.second._shader->getLocation()));
                            ImGui::TextWrapped(s.second._shader->getShaderSource().c_str());
                            ImGui::Separator();
                        }
                        ImGui::TreePop();
                    }

                    if (!stateset->getUniformList().empty())
                    {
                        if (ImGui::TreeNode("Uniforms"))
                        {
                            if (ImGui::BeginTable("Uniforms", 3, ImGuiTableFlags_Borders))
                            {
                                for (auto& u : stateset->getUniformList())
                                {

                                    osg::Uniform* uniform = dynamic_cast<osg::Uniform*>(u.second.first.get());
                                    if (uniform)
                                    {
                                        // Name
                                        ImGui::TableNextColumn(); ImGui::Text(u.first.c_str());
                                        // Type
                                        ImGui::TableNextColumn(); ImGui::Text(osg::Uniform::getTypename(uniform->getType()));
                                        // Value
                                        ImGui::TableNextColumn(); ImGui::Text(printUniformValue(uniform).c_str());
                                    }
                                }
                                ImGui::EndTable();
                            }
                        }
                    }

                    ImGui::TreePop();
                }
            }

            osg::Geometry* geometry = dynamic_cast<osg::Geometry*>(node);
            if (geometry && ImGui::TreeNode("Geometry Properties"))
            {
                ImGui::Text("Type %s", typeid(*geometry).name());

                if (geometry->getVertexArray())
                {
                    if (ImGui::TreeNode("verts", "VERTICES %d", geometry->getVertexArray()->getNumElements()))
                    {
                        printArrayTable(geometry->getVertexArray());
                        ImGui::TreePop();
                    }
                }

                if (geometry->getColorArray())
                {
                    if (ImGui::TreeNode("colors", "COLORS %d", geometry->getColorArray()->getNumElements()))
                    {
                        printArrayTable(geometry->getColorArray());
                        ImGui::TreePop();
                    }
                }

                if (geometry->getNormalArray())
                {
                    if (ImGui::TreeNode("normals", "NORMALS %d", geometry->getNormalArray()->getNumElements()))
                    {
                        printArrayTable(geometry->getNormalArray());
                        ImGui::TreePop();
                    }
                }

                auto& texCoordArrays = geometry->getTexCoordArrayList();
                for (unsigned int i = 0; i < texCoordArrays.size(); ++i)
                {
                    if (texCoordArrays[i].valid())
                    {
                        if (ImGui::TreeNode("texcoords", "TexCoords Unit %d %d", i, texCoordArrays[i]->getNumElements()))
                        {
                            printArrayTable(texCoordArrays[i].get());
                            ImGui::TreePop();
                        }
                    }
                }

                // Vetex attrib arrays
                osg::Geometry::ArrayList& arrays = geometry->getVertexAttribArrayList();
                bool validVertexAttributeArray = false;
                for (unsigned int i = 0; i < arrays.size(); ++i)
                {
                    if (arrays[i].valid())
                    {
                        validVertexAttributeArray = true;
                        break;
                    }
                }

                if (validVertexAttributeArray)
                {

                    ImGui::Text("Vertex Attributes");
                    ImGui::Separator();
                    for (unsigned int i = 0; i < arrays.size(); ++i)
                    {
                        if (!arrays[i].valid() && arrays[i]->getBinding() != osg::Array::BIND_OFF) continue;

                        const char* arrayName = attributeTypeToString((osg::Drawable::AttributeType)i);

                        if (ImGui::TreeNode(arrayName, "%s %d", arrayName, arrays[i]->getNumElements()))
                        {
                            printArrayTable(arrays[i].get());
                            ImGui::TreePop();
                        }
                    }
                }

                for (auto& p : geometry->getPrimitiveSetList())
                {
                    ImGui::Text("%s Mode=%s Primitives=%d Instances=%d", typeid(*p.get()).name(), GLModeToString(p->getMode()), p->getNumPrimitives(), p->getNumInstances());
                }
            }

            ImGui::Separator();
            ImGui::Checkbox("Hide empty PagedNodes", &hideEmptyPagedNodes);
        }

        const char* GLModeToString(GLenum mode)
        {
            switch (mode)
            {
            case(GL_POINTS): return "GL_POINTS";
            case(GL_LINES): return "GL_LINES";
            case(GL_TRIANGLES): return "GL_TRIANGLES";
            case(GL_QUADS): return "GL_QUADS";
            case(GL_LINE_STRIP): return "GL_LINE_STRIP";
            case(GL_LINE_LOOP): return "GL_LINE_LOOP";
            case(GL_TRIANGLE_STRIP): return "GL_TRIANGLE_STRIP";
            case(GL_TRIANGLE_FAN): return "GL_TRIANGLE_FAN";
            case(GL_QUAD_STRIP): return "GL_QUAD_STRIP";
            case(GL_PATCHES): return "GL_PATCHES";
            case(GL_POLYGON): return "GL_POLYGON";
            default: return "Unknown";
            }
        }

        const char* FunctionLocationToString(VirtualProgram::FunctionLocation location)
        {
            using namespace osgEarth::ShaderComp;

            switch (location)
            {
            case LOCATION_VERTEX_MODEL: return "LOCATION_VERTEX_MODEL";
            case LOCATION_VERTEX_VIEW: return "LOCATION_VERTEX_VIEW";
            case LOCATION_VERTEX_CLIP: return "LOCATION_VERTEX_CLIP";
            case LOCATION_TESS_CONTROL: return "LOCATION_TESS_CONTROL";
            case LOCATION_TESS_EVALUATION: return "LOCATION_TESS_EVALUATION";
            case LOCATION_GEOMETRY: return "LOCATION_GEOMETRY";
            case LOCATION_FRAGMENT_COLORING: return "LOCATION_FRAGMENT_COLORING";
            case LOCATION_FRAGMENT_LIGHTING: return "LOCATION_FRAGMENT_LIGHTING";
            case LOCATION_FRAGMENT_OUTPUT: return "LOCATION_FRAGMENT_OUTPUT";
            case LOCATION_UNDEFINED: return "LOCATION_UNDEFINED";
            default: return "Undefined";
            }
        }

        bool _installedSelectNodeHandler;
        osg::MatrixTransform* _selectedBounds;
        osg::observer_ptr<osg::Node> _node;
        osg::observer_ptr<MapNode> _mapNode;
        osg::RefNodePath _selectedNodePath;
        bool _propertiesExpanded = true;
        bool _boundsDirty = false;
        MemoryStats _memoryStats;
    };
}