/*
 * @(#)SkewbGLP.h
 *
 * Copyright 2003 - 2009  David A. Bagley, bagleyd@tux.org
 *
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of the author not be
 * used in advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.
 *
 * This program is distributed in the hope that it will be "useful",
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */

/* Private header file for SkewbGL */

#ifndef _SkewbGLP_h
#define _SkewbGLP_h

#include "SkewbGL.h"
#include <GL/gl.h>
#include <GL/glu.h>
#ifndef WINVER
#include <GL/glx.h>

/* This gets around C's inability to do inheritance */
typedef struct _SkewbGLClassPart {
	int         ignore;
} SkewbGLClassPart;

typedef struct _SkewbGLClassRec {
	CoreClassPart coreClass;
	SkewbClassPart skewbClass;
	SkewbGLClassPart skewbGLClass;
} SkewbGLClassRec;

extern SkewbGLClassRec skewbGLClassRec;
#endif

#define TOP_FACE 0
#define LEFT_FACE 1
#define FRONT_FACE 2
#define RIGHT_FACE 3
#define BOTTOM_FACE 4
#define BACK_FACE 5
#define BORDER_FACE (MAX_FACES)
#define NO_FACE (MAX_FACES+1)
#define NO_CORNER 8
#define NO_POSITION (IGNORE_DIR)
#define NO_ROTATION (2*MAX_ORIENT)
#define NO_DEPTH (IGNORE_DIR)
#define MAX_TURN_INC 10

#define CUBE_LENGTH 0.5
#define CUBE_ROUND (CUBE_LENGTH-0.05)
#define STICKER_LONG (CUBE_ROUND-0.05)
#define STICKER_SHORT (STICKER_LONG-0.05)
#define STICKER_DEPTH (CUBE_LENGTH+0.01)
#define SELECT_LONG (4.5*CUBE_ROUND/5.0-0.05)
#define SELECT_SHORT (3.5*STICKER_LONG/5.0-0.05)
#define FACELEN (2.0*CUBE_LENGTH)
#define FACEROUND (2.0*CUBE_LENGTH-0.03)
#define FSTICKER_LONG (FACEROUND-0.05)
#define FSTICKER_SHORT (FSTICKER_LONG-0.05)
#define FSTICKER_DEPTH (FACELEN+0.01)
#define FSELECT_LONG (4.0*FACEROUND/5.0-0.05)
#define FSELECT_SHORT (4.0*FSTICKER_LONG/5.0-0.05)
#define CUT 0.04
#define CUT_DEPTH (STICKER_DEPTH+0.001)
#define FCUT_DEPTH (FSTICKER_DEPTH+0.001)
#define SELECT_DEPTH (STICKER_DEPTH+0.002)
#define FSELECT_DEPTH (FSTICKER_DEPTH+0.002)

#define SCALE (1.1)

typedef struct _SkewbMove {
        int         face, direction;
        int         position;
        Boolean     control;
} SkewbMove;

typedef struct _SkewbSlice {
        int         corner, rotation;
} SkewbSlice;

typedef struct _SkewbGLPart {
	double      angleStep;
	double      rotateStep;
	int         numTurnInc;
	Position    faceDiagonal;
	Position    cubeDiagonalx, cubeDiagonaly, cubeDiagonalz;
	/*Point       cubeSizex, cubeSizey, cubeSizez;*/
	Point       faceSize, viewSize;
	Point       viewMiddle;
	SkewbMove   movement;
	int         step;
} SkewbGLPart;

typedef struct _SkewbGLRec {
	CorePart    core;
	SkewbPart   skewb;
	SkewbGLPart skewbGL;
} SkewbGLRec;

extern Boolean selectPiecesGL(SkewbGLWidget w, int x, int y,
	int *face, int *position);
extern Boolean narrowSelectionGL(SkewbGLWidget w,
	int *face, int *position, int *direction);
extern void drawFrameGL(SkewbGLWidget w, Boolean focus);
extern void drawAllPiecesGL(SkewbGLWidget w);
extern void moveAllPiecesGL(SkewbGLWidget w, int face, int direction,
	int fast);
extern void movePiecesGL(SkewbGLWidget w, int face, int position,
	int direction, Boolean control, int fast);
#ifdef WINVER
extern void resizePuzzleGL(SkewbGLWidget w);
extern void exposePuzzleGL(SkewbGLWidget w);
#endif

#endif /* _SkewbGLP_h */
