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#ifndef __ASURA_MATRIX_H__
#define __ASURA_MATRIX_H__
namespace AsuraEngine
{
namespace Math
{
///
/// ҪתõOpenGLglm::mat4
/// https://blog.csdn.net/candycat1992/article/details/8830894
///
class Matrix44
{
public:
static const Matrix44 Identity;
///
/// Creates a new identity matrix.
///
Matrix44();
///
/// Copy constructor.
///
Matrix44(const Matrix44& m);
///
/// Destructor.
///
~Matrix44();
void operator = (const Matrix44& m);
void SetOrtho(float _left, float _right, float _bottom, float _top, float _near, float _far);
///
/// Multiplies this Matrix44 with another Matrix44, changing neither.
/// @param m The Matrix44 to multiply with this Matrix44.
/// @return The combined matrix.
///
Matrix44 operator * (const Matrix44 & m) const;
///
/// Multiplies a Matrix44 into this Matrix44.
/// @param m The Matrix44 to combine into this Matrix44.
///
void operator *= (const Matrix44 & m);
///
/// Gets a pointer to the 16 array elements.
/// @return The array elements.
///
const float* GetElements() const;
///
/// ReSets this Matrix44 to the identity matrix.
///
void SetIdentity();
///
/// ReSets this Matrix44 to a translation.
/// @param x Translation along x-axis.
/// @param y Translation along y-axis.
///
void SetTranslation(float x, float y);
///
/// ReSets this Matrix44 to a rotation.
/// @param r The angle in radians.
///
void SetRotation(float r);
///
/// ReSets this Matrix44 to a scale transformation.
/// @param sx Scale factor along the x-axis.
/// @param sy Scale factor along the y-axis.
///
void SetScale(float sx, float sy);
///
/// ReSets this Matrix44 to a shear transformation.
/// @param kx Shear along x-axis.
/// @param ky Shear along y-axis.
///
void SetShear(float kx, float ky);
///
/// Creates a transformation with a certain position, orientation, scale
/// and offSet. Perfect for Drawables -- what a coincidence!
///
/// @param x The translation along the x-axis.
/// @param y The translation along the y-axis.
/// @param angle The rotation (rad) around the center with offSet (ox,oy).
/// @param sx Scale along x-axis.
/// @param sy Scale along y-axis.
/// @param ox The offSet for rotation along the x-axis.
/// @param oy The offSet for rotation along the y-axis.
/// @param kx Shear along x-axis
/// @param ky Shear along y-axis
///
void SetTransformation(float x, float y, float angle, float sx, float sy, float ox, float oy);
///
/// Multiplies this Matrix44 with a translation.
/// @param x Translation along x-axis.
/// @param y Translation along y-axis.
///
void Translate(float x, float y);
///
/// Multiplies this Matrix44 with a rotation.
/// @param r Angle in radians.
///
void Rotate(float r);
///
/// Multiplies this Matrix44 with a scale transformation.
/// @param sx Scale factor along the x-axis.
/// @param sy Scale factor along the y-axis.
///
void Scale(float sx, float sy);
///
/// Multiplies this Matrix44 with a shear transformation.
/// @param kx Shear along the x-axis.
/// @param ky Shear along the y-axis.
///
void Shear(float kx, float ky);
/////
///// Transforms an array of vertices by this Matrix44. The sources and
///// destination arrays may be the same.
/////
///// @param dst Storage for the transformed vertices.
///// @param src The source vertices.
///// @param size The number of vertices.
/////
//void transform(Graphics::Vertex* dst, const Graphics::Vertex * src, int size) const;
private:
///
/// | e0 e4 e8 e12 |
/// | e1 e5 e9 e13 |
/// | e2 e6 e10 e14 |
/// | e3 e7 e11 e15 |
///
float e[16];
};
}
}
namespace AEMath = AsuraEngine::Math;
#endif
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