Refactor FontAtlas class

openVulkanoCpp/Scene/Text/FontAtlas.hpp

@@ -0,0 +1,62 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "FontAtlasType.hpp"
+#include "Math/Math.hpp"
+#include "Data/Containers/Array.hpp"
+#include "Scene/Texture.hpp"
+#include <map>
+#include <filesystem>
+
+namespace OpenVulkano::Scene
+{
+	struct GlyphInfo
+	{
+		//GlyphGeometry geometry;
+		//GlyphBox glyphBox;
+		Math::Vector2f_SIMD pos[4] = {};
+		Math::Vector2f_SIMD uv[4] = {};
+		double advance = 0;
+	};
+
+	class FontAtlas
+	{
+		struct Metadata
+		{
+			double lineHeight = 0;
+			FontAtlasType atlasType = FontAtlasType::UNKNOWN;
+		};
+
+		std::map<uint32_t, GlyphInfo> m_glyphs;
+		Metadata m_metadata;
+		Array<uint8_t> m_imgData;
+		Texture m_texture;
+
+		void LoadLegacy(std::span<char> data);
+		void LoadNew(std::span<char> data);
+		void LoadImage(std::span<char> data);
+
+	public:
+		FontAtlas() = default;
+		FontAtlas(const Math::Vector2ui textureResolution, const double lineHeight, const FontAtlasType atlasType) { Init(textureResolution, lineHeight, atlasType); }
+		FontAtlas(const std::filesystem::path& path);
+		FontAtlas(const std::span<char> data) { Load(data); }
+
+		void Init(Math::Vector2ui textureResolution, double lineHeight, FontAtlasType atlasType);
+
+		void Save(const std::filesystem::path& path) const;
+		void Load(std::span<char> data);
+
+		[[nodiscard]] operator bool() const { return !m_glyphs.empty() && m_texture.textureBuffer; }
+
+		[[nodiscard]] Texture* GetTexture() { return &m_texture; }
+		[[nodiscard]] decltype(m_glyphs)& GetGlyphs() { return m_glyphs; }
+		[[nodiscard]] decltype(Metadata::lineHeight) GetLineHeight() const { return m_metadata.lineHeight;}
+		[[nodiscard]] FontAtlasType GetAtlasType() const { return m_metadata.atlasType;}
+	};
+}