NazaraEngine/include/Nazara/Utility/GuillotineImageAtlas.hpp

71 lines
2.0 KiB
C++

// Copyright (C) 2015 Jérôme Leclercq
// This file is part of the "Nazara Engine - Utility module"
// For conditions of distribution and use, see copyright notice in Config.hpp
#pragma once
#ifndef NAZARA_GUILLOTINEIMAGEATLAS_HPP
#define NAZARA_GUILLOTINEIMAGEATLAS_HPP
#include <Nazara/Prerequesites.hpp>
#include <Nazara/Core/GuillotineBinPack.hpp>
#include <Nazara/Utility/AbstractAtlas.hpp>
#include <Nazara/Utility/AbstractImage.hpp>
#include <Nazara/Utility/Image.hpp>
#include <memory>
#include <vector>
namespace Nz
{
class NAZARA_UTILITY_API GuillotineImageAtlas : public AbstractAtlas
{
public:
GuillotineImageAtlas();
virtual ~GuillotineImageAtlas();
void Clear();
void Free(SparsePtr<const Rectui> rects, SparsePtr<unsigned int> layers, unsigned int count);
GuillotineBinPack::FreeRectChoiceHeuristic GetRectChoiceHeuristic() const;
GuillotineBinPack::GuillotineSplitHeuristic GetRectSplitHeuristic() const;
AbstractImage* GetLayer(unsigned int layerIndex) const;
unsigned int GetLayerCount() const;
UInt32 GetStorage() const;
bool Insert(const Image& image, Rectui* rect, bool* flipped, unsigned int* layerIndex);
void SetRectChoiceHeuristic(GuillotineBinPack::FreeRectChoiceHeuristic heuristic);
void SetRectSplitHeuristic(GuillotineBinPack::GuillotineSplitHeuristic heuristic);
protected:
struct Layer;
virtual AbstractImage* ResizeImage(AbstractImage* oldImage, const Vector2ui& size) const;
bool ResizeLayer(Layer& layer, const Vector2ui& size);
struct QueuedGlyph
{
Image image;
Rectui rect;
bool flipped;
};
struct Layer
{
std::vector<QueuedGlyph> queuedGlyphs;
std::unique_ptr<AbstractImage> image;
GuillotineBinPack binPack;
unsigned int freedRectangles = 0;
};
private:
void ProcessGlyphQueue(Layer& layer) const;
mutable std::vector<Layer> m_layers;
GuillotineBinPack::FreeRectChoiceHeuristic m_rectChoiceHeuristic;
GuillotineBinPack::GuillotineSplitHeuristic m_rectSplitHeuristic;
};
}
#endif // NAZARA_GUILLOTINEIMAGEATLAS_HPP