draw_node.hpp

// Copyright [2015] Albert Huang

#ifndef SCENEVIEW_DRAW_NODE_HPP__
#define SCENEVIEW_DRAW_NODE_HPP__

#include <memory>
#include <utility>
#include <vector>

#include <sceneview/drawable.hpp>
#include <sceneview/scene_node.hpp>
#include <sceneview/geometry_resource.hpp>
#include <sceneview/material_resource.hpp>

namespace sv {

class Drawable;
class DrawGroup;

class DrawNode : public SceneNode {
  public:
    virtual ~DrawNode();

    SceneNodeType NodeType() const override { return SceneNodeType::kDrawNode; }

    void Add(const Drawable::Ptr& drawable);

    void Add(const GeometryResource::Ptr& geometry,
        const MaterialResource::Ptr& material);

    const std::vector<Drawable::Ptr>& Drawables() const;

    const AxisAlignedBox& WorldBoundingBox() override;

  protected:
    void BoundingBoxChanged() override;

  private:
    DrawGroup* GetDrawGroup() { return draw_group_; }

    void SetDrawGroup(DrawGroup* draw_group) {
      draw_group_ = draw_group; }

    friend class Scene;

    friend class Drawable;

    explicit DrawNode(const QString& name);

    std::vector<Drawable::Ptr> drawables_;

    AxisAlignedBox bounding_box_;
    bool bounding_box_dirty_;

    DrawGroup* draw_group_ = nullptr;
};

}  // namespace sv

#endif  // SCENEVIEW_DRAW_NODE_HPP__