#ifndef MATH_M4X4_H_
#define MATH_M4X4_H_

#include <GL/gl.h>

typedef struct {
    GLfloat m[16]; // 4x4
} m4x4;

// Matrix functions
void m4x4LoadIdentity (m4x4*);
void m4x4Multiplier   (m4x4 *r, m4x4 *m1, m4x4 *m2);
void m4x4Inverse      (m4x4*);
void m4x4Transpose    (m4x4*);
void m4x4Copy         (m4x4 *dest, m4x4 *src);
void m4x4Print        (m4x4*);

// OpenGL functions
void m4x4Translation  (m4x4*, GLfloat x, GLfloat y, GLfloat z);
void m4x4Homothetie   (m4x4*, GLfloat x, GLfloat y, GLfloat z);
void m4x4Rotation     (m4x4*, GLfloat a, GLfloat x, GLfloat y, GLfloat z); // a = angle

// Opengl view functions
void m4x4Perpective   (m4x4*, GLfloat angle, GLfloat ratio, GLfloat near, GLfloat far);
void m4x4Ortho        (m4x4*, GLfloat left, GLfloat right, GLfloat bottom, GLfloat top,     GLfloat nearV,   GLfloat farV );
void m4x4LookAt       (m4x4*, GLfloat eyeX, GLfloat eyeY,  GLfloat eyeZ,   GLfloat centerX, GLfloat centerY, GLfloat centerZ, GLfloat upX, GLfloat upY, GLfloat upZ);

// Stack struct
typedef struct {
    int nb;
    int size;
    m4x4 *pile;

} m4x4Stack;

// Stack functions
void m4x4StackInit  (m4x4Stack *p);
void m4x4StackPush  (m4x4Stack *p, m4x4 *m);
void m4x4StackPop   (m4x4Stack *p, m4x4 *m);
void m4x4StackFree  (m4x4Stack *p);
void m4x4StackPrint (m4x4Stack *p);

#endif /* MATH_M4X4_H_ */