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#ifndef _ASURA_MATRIX_STACK_H_
#define _ASURA_MATRIX_STACK_H_
#include <asura-base/Type.h>
#include <asura-base/Math/Matrix44.h>
#include <asura-base/Classes.h>
namespace_begin(AsuraEngine)
namespace_begin(Graphics)
///
/// ջľȡ
///
#define ASURA_MAX_MATRIX_STACK_DEPTH 32 // 2KB
///
/// ջ״ָ̬֮ǰ״̬ջеһstack[i]ֵstack[0]*..*stack[i-1]
/// ֵһϵtransform
///
/// TODO: template<uint _capacity> MatrixStack
///
class MatrixStack
{
public:
MatrixStack();
~MatrixStack();
void LoadIdentity();
bool Push();
bool Pop();
AEMath::Matrix44& GetTop();
void GetTop(ASURA_OUT AEMath::Matrix44& mat44);
void LoadMatrix(const AEMath::Matrix44& mat44);
void MultMatrix(const AEMath::Matrix44& mat44);
void Rotate(float angle);
void Translate(float x, float y);
void Scale(float x, float y);
void Ortho(float l, float r, float b, float t, float n, float f);
uint GetTopIndex();
uint GetCapacity();
private:
AEMath::Matrix44 m_Stack[ASURA_MAX_MATRIX_STACK_DEPTH];
uint8 top;
};
namespace_end
namespace_end
#endif
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