修改目录结构

1 files changed, 153 insertions, 0 deletions

diff --git a/src/libjin/math/matrix.h b/src/libjin/math/matrix.h
new file mode 100644
index 0000000..673d253
--- /dev/null
+++ b/src/libjin/math/matrix.h
@@ -0,0 +1,153 @@
+#ifndef __JIN_MATRIX_H
+#define __JIN_MATRIX_H
+#include <math.h>
+namespace jin
+{
+namespace math
+{
+
+    struct vertex
+    {
+        unsigned char r, g, b, a;
+        float x, y;
+        float s, t;
+    };
+    /**
+    * This class is the basis for all transformations in LOVE. Althought not
+    * really needed for 2D, it contains 4x4 elements to be compatible with
+    * OpenGL without conversions.
+    **/
+    class Matrix
+    {
+    private:
+
+        /**
+        * | e0 e4 e8  e12 |
+        * | e1 e5 e9  e13 |
+        * | e2 e6 e10 e14 |
+        * | e3 e7 e11 e15 |
+        **/
+        float e[16];
+
+    public:
+
+        /**
+        * Creates a new identity matrix.
+        **/
+        Matrix();
+
+        /**
+        * Destructor.
+        **/
+        ~Matrix();
+
+        /**
+        * Multiplies this Matrix with another Matrix, changing neither.
+        * @param m The Matrix to multiply with this Matrix.
+        * @return The combined matrix.
+        **/
+        Matrix operator * (const Matrix & m) const;
+
+        /**
+        * Multiplies a Matrix into this Matrix.
+        * @param m The Matrix to combine into this Matrix.
+        **/
+        void operator *= (const Matrix & m);
+
+        /**
+        * Gets a pointer to the 16 array elements.
+        * @return The array elements.
+        **/
+        const float * getElements() const;
+
+        /**
+        * Resets this Matrix to the identity matrix.
+        **/
+        void setIdentity();
+
+        /**
+        * Resets this Matrix to a translation.
+        * @param x Translation along x-axis.
+        * @param y Translation along y-axis.
+        **/
+        void setTranslation(float x, float y);
+
+        /**
+        * Resets this Matrix to a rotation.
+        * @param r The angle in radians.
+        **/
+        void setRotation(float r);
+
+        /**
+        * Resets this Matrix 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 Matrix 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 Matrix with a translation.
+        * @param x Translation along x-axis.
+        * @param y Translation along y-axis.
+        **/
+        void translate(float x, float y);
+
+        /**
+        * Multiplies this Matrix with a rotation.
+        * @param r Angle in radians.
+        **/
+        void rotate(float r);
+
+        /**
+        * Multiplies this Matrix 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 Matrix 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 Matrix. 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(vertex * dst, const vertex * src, int size) const;
+
+    }; 
+
+}
+} 
+
+#endif