dm-pex.h

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/*                          D M - P E X . H
 * BRL-CAD
 *
 * Copyright (c) 1993-2006 United States Government as represented by
 * the U.S. Army Research Laboratory.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library 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.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this file; see the file named COPYING for more
 * information.
 */
/** @addtogroup libdm */
/*@{*/
/** @file dm-pex.h
 *
 */
#ifndef SEEN_DM_PEX
#define SEEN_DM_PEX

/*
 * Display coordinate conversion:
 *  GED is using -2048..+2048,
 *  X is 0..width,0..height
 */
#define GED_TO_Xx(_dmp, x) ((int)(((x)/4096.0+0.5)*((struct pex_vars *)((_dmp)->dmr_vars))->width))
#define GED_TO_Xy(_dmp, x) ((int)((0.5-(x)/4096.0)*((struct pex_vars *)((_dmp)->dmr_vars))->height))
#define Xx_TO_GED(_dmp, x) ((int)(((x)/(double)((struct pex_vars *)((_dmp)->dmr_vars))->width - 0.5) * 4095))
#define Xy_TO_GED(_dmp, x) ((int)((0.5 - (x)/(double)((struct pex_vars *)((_dmp)->dmr_vars))->height) * 4095))

#define TRY_DEPTHCUE 0
#define Pex_MV_O(_m) offsetof(struct modifiable_pex_vars, _m)

struct modifiable_pex_vars {
#if TRY_DEPTHCUE
  int cue;
#endif
  int perspective_mode;
  int dummy_perspective;
};

struct pex_vars {
  struct bu_list l;
  Display *dpy;
  Window win;
  Tk_Window xtkwin;
  int width;
  int height;
  int omx, omy;
  unsigned int mb_mask;
  int perspective_angle;
  XFontStruct *fontstruct;
  GC gc;
#ifdef DOUBLE_BUFFERING_WITH_PIXMAPS
  Pixmap pix;
  int pix_width, pix_height;
#endif
  PEXRenderer renderer;
  PEXRendererAttributes rattrs;
  int is_monochrome;
  unsigned long black,gray,white,yellow,red,blue;
  unsigned long bd, bg, fg;   /* color of border, background, foreground */
  struct modifiable_pex_vars mvars;
};

extern void Pex_configure_window_shape();
extern void Pex_establish_perspective();
extern void Pex_set_perspective();
extern struct pex_vars head_pex_vars;

#endif /* SEEN_DM_PEX */
/*@}*/
/*
 * Local Variables:
 * mode: C
 * tab-width: 8
 * c-basic-offset: 4
 * indent-tabs-mode: t
 * End:
 * ex: shiftwidth=4 tabstop=8
 */

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