// Keisanki Joron 2 (Introduction to Computing II)
// Dept. of Engineering Systems, University of Tsukuba
// 2006/09/05, kameda@iit.tsukuba.ac.jp  Y.Kameda


//-----------------------------------------------------
// データ構造を扱う関数／メモリ管理
//-----------------------------------------------------

struct POINT *new_POINT(void);
struct LINE *new_LINE(void);
struct FIGURE *new_FIGURE (void);
struct PARAMETER *new_PARAMETER (void);
void free_LINE (struct LINE *line);
void free_FIGURE (struct FIGURE *figure);
void free_all_FIGUREs (struct FIGURE *figure);
void free_PARAMETER(struct PARAMETER *parameter);
void free_all_PARAMETER(struct PARAMETER *parameter);
void print_LINE (struct LINE *line);
void print_all_LINEs (struct LINE *line);
void print_FIGURE (struct FIGURE *figure);
void print_all_FIGURE (struct FIGURE *figure);
void print_PARAMETER (struct PARAMETER *parameter);
void print_matrix (mat4x4 matrix);

//-----------------------------------------------------
// データファイルからの読み込み
//-----------------------------------------------------

void load_LINE (char *command);
void attach_new_FIGURE (void);

//-----------------------------------------------------
// 描画関数
//-----------------------------------------------------

void draw_LINE (struct LINE *line);
void draw_FIGURE (struct FIGURE *figure);
void draw_all_FIGURE (struct FIGURE *figure);
void draw_FIGURE_continuously (struct FIGURE *figure);
void read_commandfile (FILE *commandFile);

//-----------------------------------------------------
// 行列操作関数（主に幾何変換操作のときに必要）
//-----------------------------------------------------

void copy_matrix (mat4x4 copy, mat4x4 original);
void compose_matrix (mat4x4 orimat, mat4x4 mulmat);

//-----------------------------------------------------
// 幾何変換操作のための関数
//-----------------------------------------------------

void simple_translation (double dx, double dy, double dz, mat4x4 matrix);
void simple_rotation_x (double thetax, mat4x4 matrix);
void simple_rotation_y (double thetay, mat4x4 matrix);
void simple_rotation_z (double thetaz, mat4x4 matrix);
void simple_scaling (double sx, double sy, double sz, mat4x4 matrix);
void create_transform_matrix (struct PARAMETER *parameter);
struct POINT *POINT_transform (mat4x4 mat, struct POINT *point);
struct LINE *LINE_transform (struct LINE *line, struct PARAMETER *parameter);
struct POINT *perspective_projection (struct POINT *point);
void normalized_draw_LINE (struct LINE *line);
void draw_FIGURE_transform(struct FIGURE *figure, struct PARAMETER *parameter);

//-----------------------------------------------------
// アニメーションを行うための関数
//-----------------------------------------------------

struct PARAMETER *PARAMETER_interpolation(struct PARAMETER *parameter1, 
					  struct PARAMETER *parameter2, 
					  double ratio);
void animation_test (struct FIGURE *figure);

//-----------------------------------------------------
// ここからはウィンドウに種々のイベントが発生したときに
// どう動くかを規定する関数群
//-----------------------------------------------------

void kj_display (void);
void kj_reshape (int w, int h);
void kj_keyfunc (unsigned char key, int x, int y);
void kj_mousefunc (int button, int status, int mouse_x, int mouse_y):

//-----------------------------------------------------
// ここからが本体
//-----------------------------------------------------

int main (int argc, char *argv[]);