/*
 * board3d.h - Lite Blue's 3D board from a pre-rendered atlas (see board3d.c).
 * Claude Opus 5.5, October 2026.
 */
#ifndef LITEBLUE_BOARD3D_H
#define LITEBLUE_BOARD3D_H

#include <stdio.h>

int  b3_open(const char *path);                 /* 0 on success */
int  b3_width(void);
int  b3_height(void);

/* pc[sq] colour (0 white, 1 black) and ptype[sq] type (0 empty, 1..6) for
 * squares 0..63 (a1 = 0); tints[sq] 0 none, 1 last move, 2 selected,
 * 3 destination. b3_compose builds the picture (0 on success; nothing is
 * written), b3_write_gif writes it. */
int  b3_compose(const int *pc, const int *ptype, int black, const unsigned char *tints);
void b3_write_gif(FILE *out);

/* Image-map shapes for the square drawn at picture position pos (White's
 * coordinates): 4 corners; and a piece's outline (returns the point count,
 * 2 * NLEV, or 0). xy holds x, y pairs in pixels. */
void b3_square(int pos, int *xy);
int  b3_outline(int colour, int type, int pos, int *xy);

#endif