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#pragma once
#include "../Graphics/VertexBuffer.h"
#include "Font.h"
#include "Runtime/Utilities/Exception.h"
#include <unordered_map>
CustomException(TextMeshException);
enum ETextAnchor
{
TextAnchor_UpperLeft,
TextAnchor_UpperCenter,
TextAnchor_UpperRight,
TextAnchor_MiddleLeft,
TextAnchor_MiddleCenter,
TextAnchor_MiddleRight,
TextAnchor_LowerLeft,
TextAnchor_LowerCenter,
TextAnchor_LowerRight,
TextAnchor_DontCare
};
enum ETextAlignment {
TextAlignment_Left,
TextAlignment_Center,
TextAlignment_Right,
TextAlignment_Auto,
};
typedef unsigned long long TextMeshHash;
namespace TextHelper
{
TextMeshHash GetTextMeshHash();
}
// 一段文字里面的网格可能会来自不同的atlas，在生成TextMesh时做好合批
class TextMesh
{
public:
TextMesh(const UnicodeString& str, Font* font, int pixelSize, ETextAnchor anchor, ETextAlignment alignment)/*throw TextMeshException*/;
~TextMesh();
void Draw();
private:
Font* m_Font;
std::unordered_map<int/*IndexOfAtlas*/, VertexBuffer*> m_VBOs;
};
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