*misc

1 files changed, 82 insertions, 0 deletions

diff --git a/source/modules/asura-core/graphics/matrix_stack.h b/source/modules/asura-core/graphics/matrix_stack.h
new file mode 100644
index 0000000..1923b30
--- /dev/null
+++ b/source/modules/asura-core/graphics/matrix_stack.h
@@ -0,0 +1,82 @@
+#ifndef __ASURA_MATRIX_STACK_H__
+#define __ASURA_MATRIX_STACK_H__
+
+#include <asura-utils/type.h>
+#include <asura-utils/math/matrix44.h>
+
+namespace AsuraEngine
+{
+	namespace Graphics
+	{
+
+		///
+		/// ջ�ľ�����ȡ�
+		///
+#define ASURA_MAX_MATRIX_STACK_DEPTH 32 // 2KB
+
+		///
+		/// ����ջ״̬�������ָ�֮ǰ��״̬��ջ�е�һ������stack[i]��ֵ��stack[0]*..*stack[i-1]
+		/// ��ֵ��������һϵ��transform��
+		/// 
+		/// TODO: template<uint _capacity> MatrixStack
+		///
+		class MatrixStack
+		{
+		public:
+
+			MatrixStack();
+			~MatrixStack();
+
+			///
+			/// ��ջ��Ԫ�صIJ���ֻ��ͨ�����º���ʵ��
+			///
+			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);
+
+			///
+			/// ����任
+			///
+			void Rotate(float angle, float x, float y, float z);
+			void Translate(float x, float y, float z);
+			void Scale(float x, float y, float z);
+
+			///
+			/// ͶӰ�任
+			///
+			void Ortho(float left, float right, float bottom, float top, float near, float far);
+			//void Perspective(float fov, float aspect, float near, float far);
+			//void Frustum(float left, float right, float top, float bottom, float near, float far);
+			//void LookAt(float x, float y, float z, float cx, float cy, float cz, float ux, float uy, float uz);
+
+			///
+			/// ���ջ������������Χ��0~ASURA_MAX_MATRIX_STACK_DEPTH-1
+			///
+			uint GetTopIndex();
+
+			///
+			/// ������ջ��������ASURA_MAX_MATRIX_STACK_DEPTH
+			///
+			uint GetCapacity();
+
+		private: 
+
+			AEMath::Matrix44 mStack[ASURA_MAX_MATRIX_STACK_DEPTH];
+
+			///
+			/// ջ��������0~ASURA_MAX_MATRIX_STACK_DEPTH-1
+			///
+			uint8 top;
+
+		};
+
+	}
+}
+
+#endif
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