ScreenSizeSystem.h

#pragma once
 
#include "Systems/ComponentSystem.h"
 
#include "Components/Appearance/ScreenSizeComponent.h"
 
#include "Services/TaskManager.h"
 
#include "Foundation/Geometry/BoundingBox.hpp"
 
namespace Cogs
{
  namespace Core
  {
    class Context;
 
    struct ScreenSizeData
    {
      std::vector<Cogs::ComponentModel::Entity*> children = {};
      std::vector<Cogs::Geometry::BoundingBox> childWorldBoundingBoxes = {};
      float currentSize = std::numeric_limits<float>::max();
      bool transformUpdateRequired = false;
    };
 
    class ScreenSizeSystem : public ComponentSystemWithDataPools<ScreenSizeComponent, ScreenSizeData>
    {
    public:
      ScreenSizeSystem(Memory::Allocator * allocator, SizeType capacity) : ComponentSystemWithDataPools(allocator, capacity) {}
 
      void initialize(Context* context) override;
      void update(Context* context) override;
      void cleanup(Context* context) override;
 
    private:
      void calcluateNewScales(Context* context, bool workParallel);
      void updateTransforms(Context* context, bool workParallel);
 
      Cogs::Core::TaskId taskGroup = NoTask;
    };
  }
}